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DSU III AR DC User Manual

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1. 1 Rx I Rx peer RK Rr eee gt Rx p Rx Error Test Pattern Clear Detector Local Unit Initiates Test Figure 11 16 V 54 RDL with Test Pattern Test Purpose Test the local DSU the DDS circuit and remote DSU Initiating Follow the menu path outlined in Figure 11 17 to place a remote DSU III ARdc into loopback 1 2047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 7 DATA FROM DTE 1 LO CAL UNIT EN TER TEST UN IT ADDRESS 0 2 REMOTE UNIT Figure 11 17 Initiating a Remote Test 11 20 DSU Ill ARdc User Manual 61200270L1 1 Chapter 11 Testing and Troubleshooting After selecting Remote Unit from the menu the following prompt is dis played for entering the address for the remote unit ENTER TEST UNIT Address XX Use the number keys to type the address of the remote DSU then press Enter The test pattern selections are displayed After a test pattern is selected the system briefly displays Please Wait Test Results If the test is successful the status menu is displayed If not Unable to Execute Test is displayed Interpreting Test Results If the unit is functioning properly the display should show TST ERR 00 61200270L1 1 DSU Ill ARdc User Manual 11 21 Chapter 11 Testing and Troubleshooting 11 22 DSU Ill ARdc User Manual 61200270L1 1 Chapter 12 Status Selection STATUS DISPLAY The STATUS selection displays t
2. PRN REGISTER NUMBER NUMBER TO BE STORED DSU Ill ARdc User Manual 61200270L1 1 61200270L1 1 Chapter 2 Installation If this command is entered with no parameters the INVPS response is returned If no register number is included in the command or if it is invalid the INVPV response is returned This response is also returned if the number to be stored contains invalid characters The characters 1 2 3 4 5 6 7 8 9 0 P T and amp are valid dial characters If no digits are issued with this command the specified register is cleared The DSU responds with VAL RLN Request List of Numbers This command causes the DSU III ARdc to return the number stored in the specified register The format of this command follows RLN REGISTER NUMBER If the register number is invalid the INVPV response is returned When a correct register number is entered the following response is returned LSN REGISTER NUMBER NUMBER STORED VAL If no register number is present in the command the DSU IH ARdc responds with a list of all the registers and the stored numbers This list is followed by the VAL response DSU Ill ARdc User Manual 2 11 Chapter 2 Installation 2 12 DSU Ill ARdc User Manual 61200270L1 1 Chapter 3 O peration MENU STRUCTURE The DSU III ARdc uses a multilevel menu approach to access its many features All menu operations are displayed in the LCD window
3. Glossary 8 DSU Ill ARdc User Manual 61200270L1 1 Glossary LATA Local Access and Transport Area One of 161 local geographical areas in the US within which a local telephone company may offer telecommunications services local or long distance local DTE and loop test A test initiated by the user that loops the DSU to the central office and back This is used to test the local DSU s DTE and local loop multi point A communications arrangement in which multiple devices share a common transmission channel although only one may transmit at atime Also referred to as multi drop nonvolatile memory Memory that is not lost when the power is shut off out of band Signaling that is separated from the channel carrying information voice data video etc Typically the separation is accomplished by a filter The signaling includes dialing and other supervisory signals parity bit A binary bit appended to an array of bits to make the sum of all the bits always odd or always even point to point A private circuit conversation or teleconference in which there is one person at each end usually connected by some dedicated transmission modem read only memory ROM A memory device which is programmed at the factory and whose contents thereaf ter cannot be altered remote configuration A feature designed into ADTRAN DSU CSU products that allows a remote DSU CSU to be configured from a local DSU CSU or VT 100 compatible terminal
4. Inject Generator Generator Error Test Pattern Clear Detector Figure 11 13 Test Pattern Only Test Purpose Testing using a test pattern does the following e Transmits user selected test pattern using an internal test pattern generator and compares the received data using internal test pattern detector to detect if there are any errors on the DDS circuit e Injects errors and verifies the unit transmits data across the commu nication circuit to the remote unit e Helps determine from which direction the circuit is receiving errors Initiating Follow the menu path outlined in Figure 11 14 to initiate a test using a test pattern 61200270L1 1 DSU Ill ARdc User Manual 11 17 Chapter 11 Testing and Troubleshooting 1 2047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 1 DTE LO O P LL 2 LO 0 P ONLY RT 4 DTE W ITH TP 5 TEST PATTERN 6 SELF TEST 1 LOCAL UNIT 2 REM O TE UNIT Figure 11 14 Initiating a Test Using a Test Pattern Interpreting Test Results If the unit is functioning properly the display should show the following TST ERR 00 Self Test The Self Test verifies current operation of the DSU III ARdc It can be per formed at any time and is recommended if there is any question about the DSU s health Test Purpose To determine if the DSU is functioning properly Initiating Follow the menu path outlined in
5. The Loop Only RT test allows the loop interface and a major portion of the DTE interface for the local DSU III ARdc to be tested from the remote site over the actual communication circuit Figure 11 7 illustrates the loopback point and the signal paths for this test LOCAL DSU CSU Interface Local 4 wire Loopback Figure 11 7 Loop Only Test Test Purpose The Loop Only test is used to provide a loopback for network tests Initiating Follow the menu path outlined in Figure 11 8 to initiate a Loop Only test 11 12 DSU Ill ARdc User Manual 61200270L1 1 Chapter 11 Testing and Troubleshooting 1 DTE LO O P LL 2 LOOP ONLY RT 1 LOCAL UNIT 2 REMOTE UNIT Figure 11 8 Initiating a Loop Only Test Interpreting Test Results DTE Only NOTE 61200270L1 1 The Loop Only test is used for the purpose of looping the DDS circuit back to the telco No test results are available from the local DSU III ARdc The DTE Only test provides a method for testing both the DTE interface drivers and receivers of the local DSU III ARdc plus its loop transmitter and receiver For this test the loop transmit data is connected to the loop receive data at a point close to the physical network interface This test can be used to verify proper operation between the local DTE and the local DSU II ARdc When this test is implemented the far unit receives an OOS OOF message from the network and enters an alarm state DSU
6. but it can be changed by writing a different value to register S3 Before the terminating character is transmitted the command line can be edited by using the backspace character ASCII 008 to erase errors so the proper commands can be entered Valid AT commands for the DSU III ARdc are listed in Appendix A AT Commands on page A 1 V 25 bis Commands When configured for the V 25 bis option the DSU III ARdc accepts in band dialing and configuration commands from both synchronous and asynchronous DTE ports The V 25 bis option supports the following protocols e SDLC synchronous data link control e Bisync e Asynchronous SDLC Option Character Format e Data bits 8 e Parity bit Ignored DSU Ill ARdc User Manual 61200270L1 1 Chapter 2 Installation Command Structure F A C V 25 bis COMMAND FCS F The address field A is FFH The control field C is set to 13H except for cases of multi frame responses For this case the control field is set to 03H in all but the last frame The 03H in the control field indicates that other frames are to follow while the 13H in the control field indicates the final frame Bi Sync Option Character Format e Databits 7 e Parity bit Odd Command Structure SYN SYN STX V 25 bis COMMAND ETX Asynchronous Option Character Format e Start bit 1 e Data bits 7 e Parity bit Even e Stop bit 1 Command Structure V 25 bis COMMAND CR LF
7. lowed by Enter 3 Use the Up and Down Arrows to view test options 4 Select a test from the available options by pressing the corresponding number followed by Enter 5 The example in Figure 11 2 shows the menu path for initiating a local DTE and Loop test 1 DTE LOOP LL 2 L00P ONLY RT 1 LOCAL UNIT 4 DTE W ITH TP 5 TEST PATTERN 6 SELF TEST 2 REM O TE UNIT Figure 11 2 Initiating a Test Once a test is initiated Please Wait is displayed briefly followed by the status screen Test Status Display 112 The Test Status display appears automatically during a test The Test Sta tus display is similar to the status screen described in Chapter 12 Status Selection on page 12 1 with additional prompts for the type of test and the number of errors for tests with a test pattern DSU Ill ARdc User Manual Chapter 11 Testing and Troubleshooting Figure 11 3 shows an example of a Test Status Display for a test with a test pattern While this menu is on the display Press 1 to clear errors Press 2 to inject an error TEST PATTERN TST ERR 00 LOOP 56K Use the Up and Down arrows DTE 56K SYNC to display other status screens TR SR LLB RIB OFF OFF OFF OFF UN IT IN TEST LOOP IS NORMAL Figure 11 3 Sample Test Status Displays Exiting a Test During a test press Quick to access the Exit Test Display Status menu or press Cancel to return to the Main menu The Exit Test Dis
8. nennnenennnen 2 11 Chapter 3 Operation sssri seere Ee ree aE Es EE EE aa r a EEEa R SS 3 1 Menu Str ct re a en EEE nn aa a suena Senntes 3 1 LCD Display of the Main Menu non neeeeneennnnnne 3 1 Main Mi Unit es een maria 3 1 Sta tUs ula u nme laden an 3 1 OSU BEE NEE te E E NEA div ao tha gates AER Makes 3 2 Configuration CONFIG eeeeeneenenenennnnne 3 2 Dial en ee A Asse een 3 2 Basic Men Travel Ha teca 3 3 Front Panel it a ln leeren nette 3 4 EEBDWindow ar a een 3 4 Enter EN 3 4 Up and Down Arrows ueeeeeneesenennssssssnnn 3 5 Cancel A 3 5 Numeric Keypad n nsenn sense nenn 3 5 STAB DNA TR A 3 5 Dick near O ON 3 5 LED Descriptions isernia t teens 3 6 Rear Panelian ATA N A A N TE TE 3 6 Chapter 4 Configuration Overview sessessessessessessesscoseesesseoscoreesesseoneoseesesseoscoseeses 4 1 Local and Remote Configuration eeneeeeenenennnnnsnnnnenennnene 4 1 Chapter 5 Configuring Network Options sesseseeseseeseseesesessesessesessesessesessessosessesese 5 1 Network Options ienie negi a ae aa E ER in Si ir 5 1 1era a Atei n EEE E E Da incita 5 1 NetWork Address 2 232 Henn Rebel 5 3 Remote Configur tion nunesinene enter e is 5 3 Network Ty pechos iaa Hein 5 4 Clock Sources amuna A EI eS 5 5 Chapter 6 Configuring DTE Options cocococociconononononinonononononcnononorononcncno ro roroncncno anos 6 1 PA AA O 6 1 DTE Ra A O AI LE EE A 6 1 Connector Ly pe wii ice nO Te Sle c
9. 1 Chapter 7 Configuring Test O ptions TEST OPTIONS The TEST OPTIONS menu enables or disables different test modes and specifies the maximum test time allowed Test Timeout The TEST TIMEOUT option sets the length of time a DSU III ARdc remains in a test mode before automatically returning to the data mode Enter the timeout from 0 to 255 seconds The factory default setting is off 0 Figure 7 1 shows the menu path used to access TEST TIMEOUT 1 N ETW ORK OPT 1 TEST TIMEOUT ENTER TIMEOUT O OFF 00 SEC 1 LOCAL 2 REMOTE ENTER ADDRESS Figure 7 1 Setting Test Timeout Option 3 TEST OPTIONS 4 EIA RLB EN DIS Table 7 1 shows the equivalent AT commands for setting the TEST TIME OUT 61200270L1 1 DSU Ill ARdc User Manual 7 1 Chapter 7 Configuring Test O ptions Table 7 1 Test Timeout AT Commands Front AT Description Panel Command EN TER TIM EO UT S18 x Specify 0 255 seconds test timeout Remote Digital Loopback The RDL Remote Digital Loopback option specifies whether or not the DSU III ARdc responds to an RDL request from the far end of the circuit The factory default setting is RDL ACCEPTED Figure 7 2 shows the menu path used to access this option 1 N ETW ORK TYPE 2 DTE OPTIONS 1 TEST TIMEO UT 3 TEST OPTIONS 2 RDL EN DIS 1 RDL IG N O RED 2 RDL ACCEPTED 1 LOCAL 3 ElA LLB EN DIS 4 EIA RLB EN DIS 2 REMOTE ENTER ADDRESS
10. 25 BISYNC BSC commands for synchronous data format or V 25 ASYNC commands for asynchronous data format 66 DSU Ill ARdc User Manual 61200270L1 1 Chapter 6 Configuring DTE O ptions Transmit Clock The TRANSMIT CLOCK option is used to select the source of the clock used to transfer data from the DTE to the DSU III ARdc Figure 6 6 shows the menu path used to set the TRANSMIT CLOCK option 1 N ETW ORK OPT 4 DTE CMD OPTION 1 NORMAL 2 DTE OPTIONS 5 TRANSMIT CLOCK 1 LOCAL 2 REMOTE ENTER ADDRESS Figure 6 6 Transmit Clock Options AN TI STREAM 9 TR OPTIONS A SR O PTION S 3 TEST OPTIONS 4 DIAL OPTION S 5 MANUALCOMMAND Table 6 4 shows the AT commands used to set the Transmit Clock option Table 6 4 Transmit Clock AT Commands Front AT Description Panel Command 1 NORMAL amp X0 TX clock from DSU selected 2 EXTERN AL amp X1 ETC clock from DTE selected The EXTERNAL clock option is normally used in modem tail circuit applications A DSU to modem interconnect diagram for this application is shown in Appendix C DSU to Modem Interconnect on page C 1 The EXTERNAL clock option is also recommended when the EIA 232 connector is used for 56 kbps and 64 kbps applications A special DSU 61200270L1 1 DSU Ill ARdc User Manual 6 7 Chapter 6 Configuring DTE O ptions cable diagram for this application is shown in Appendix D EIA 232 Con necto
11. 4 DIAL O PTION S 5 MANUAL Figure 7 2 Remote Digital Loopback Table 7 2 shows the equivalent AT commands for setting the RDL option Table 7 2 Remote Digital Loopback AT Commands Front AT Description Panel Command 1 RDLIGN O RED amp T5 RDL requests from remote DSU ignored 2 RDLACCEPTED amp T4 RDL requests accepted EIA Local Loopback The EIA LLB Electronics Industries Association Local Loopback option specifies whether or not the DSU III ARdc responds to the LLB input from 7 2 DSU III ARdc User Manual 61200270L1 1 Chapter 7 Configuring Test O ptions the DTE The factory default setting is DISABLED Figure 7 3 shows the menu path used to access the EIA LLB option 1 N ETW O RK TYPE 2 DTE OPTIONS 1 TEST TIM EO UT 3 TEST OPTIONS 2 RDLEN DIS 3 ElA LLB EN DIS 4 EIA RLB EN DIS 1 LOCAL 2 REMOTE JENTER ADDRESS Figure 7 3 ElA Local Loopback Options 1 DISABLED 4 DIAL OPTIONS Table 7 3 shows the equivalent AT commands for setting the EIA LLB options Table 7 3 ElA Local Loopback AT Commands Front AT Description Panel Command 1 DISABLED _A0 EIA LLB disabled 2 EN ABLED _Al EIA LLB enabled EIA Remote Loopback The EIA RLB Electronics Industries Association Remote Loopback option specifies whether or not the DSU III ARdc responds to the RLB input from the DTE The factory default setting is DISABLED Figure 7 4 shows the menu path
12. 4 wire Switched 56 SW56 network lines The DSU III ARdc supports both synchronous and asynchronous data communica tion over the DDS or 4 wire Switched 56 networks This unit is an all rate DSU CSU supporting services from 2 4 to 64 kbps including 19 2 and 38 4 kbps services The DSU III ARdc may be used in either point to point or multi point circuits The DSU III ARdc provides both V 35 and EIA 232 electrical and physical DTE interfaces to accommodate a variety of applications To insure a reli able connection the unit features an extended receiver capability which permits operation over long loops 3 4 miles or 5 5 km of 26 AWG at 56 kbps The unit supports Switched 56 4 wire service with dialing accom plished from the front panel This model is compatible with AT amp T Accu net and Sprint SW56 type services Figure 1 1 shows a sample point to point application for the DSU III ARdc 61200270L1 1 DSU Ill ARdc User Manual 1 1 Chapter 1 Introduction Router Router DSU III ARdc DSU III ARdc s DDS p SA Network Figure 1 1 Sample Point to Point Application for DSU III ARdc DDS Overview DDS is a nationwide service that allows interconnection and transport of data at speeds up to 64 kbps The local exchange carriers provide the local loop service to DDS customers and may provide data for routing Inter LATA to an interexchange carrier In DDS mode the DSU III ARdc sup ports all DD
13. 6 8 Table 6 9 Table 6 10 Table 7 1 Table 7 2 Table 7 3 Table 7 4 Table 8 1 Table 8 2 Table 9 1 Table 11 1 Table 11 2 Table 11 3 Table 11 4 Table 11 5 Table A 1 Table B 1 61200270L1 1 List of Tables Pin Assignments for Telco Connector ococicicicononininnononinnoninorionocss 2 2 Pin Assignments for Primary EIA 232 Connector cococccicoconoononoso 2 3 Pin Assignments for Primary V 35 Connector m ccocococicicnnrnninononoso 2 4 Configuration Methods eeeseseneneneneneneneneneneneneneneneenen een 2 5 Identification of Numbers eessessseeseesseensnnnnnnennnnsnnnnnnennn 3 7 Loop Rate Commands unne eek 5 2 Network Address Command ccccccccsccesssessecesseceseeessceeseesseeenseeees 5 3 Remote Configuration Commands eeneeneen 5 4 Network Type Commands nneennneenn 5 5 Clock Source Commands cooocccoccconccoanononccnnanonnnonnnonnnanon conan non nnonancnnns 5 6 DTE Rate AT Commands ooc cccccccccccsscssecesssessecesceceeeeesseesseeseeeaeeeees 6 2 Scrambler On Off AT Commands e ccccoccccnnnncnionnninnnnaninnananinnncnanan 6 2 Data Format Commands cccccssssssessecssseesseecececsseecaeceseecnaeceseeees 6 5 Transmit Clock AT Commands ccccccccesscssecesseceseeesseeseeesseseeeees 6 7 CS Options AT Commands uessenennenenenenenenenenenenenenenenes 6 9 Short and Long Delays at Different Operating Speeds 6 10 Anti Stream AT Commands ccccc
14. ARdc can be configured and controlled with in band AT commands from an asynchronous DTE port just as modems are To exit the data mode and enter the command mode the asynchronous DTE device must transmit a proper escape sequence or three pluses to the DSU III ARdc A specified time delay must occur between the last data character and the first escape sequence character This is the guard time delay and it can be changed by writing a value to the S12 register The default value for the guard time is one second For a valid escape sequence to occur the DTE must transmit the escape code character three times in succession with delay between each character being less than the guard time DSU Ill ARdc User Manual 25 Chapter 2 Installation Once the command mode is entered AT commands can be transmitted to the DSU III ARdc to configure most of the options or initiate tests to check both the DSU IIT ARdc and the network connections All command lines must begin with the AT character et in either capital or lower case letters The command line may contain a single command or a series of com mands after the AT attention code When a series of commands is used the individual commands may be separated with spaces for readability The maximum length for a command line is 40 characters Each com mand line is executed by the DSU III ARdc upon receipt of a terminating character The default terminating character is a carriage return ASCII 013
15. External TX Signal Element SC X B NN Test Indicator TI CONFIGURATION The DSU III ARde contains four different user profiles sets of configura tions options that are stored in read only memory These profiles are listed in Appendix B Default Configuration Profiles on page B 1 The unit is shipped from the factory with profile 1 default configuration loaded into the nonvolatile configuration memory If profile 1 matches the desired system requirements then no additional configuration is required to put the unit into service If profile 1 does not match the desired system DSU Ill ARdc User Manual 61200270L1 1 Configuration AT Commands 61200270L1 1 Chapter 2 Installation requirements modify the default configuration or select another profile more closely matching the desired configuration and modify When a new profile is loaded or the existing profile is modified it is stored in the nonvolatile configuration memory The DSU III ARdc is then configured with that profile every time power is turned on or reset See Chapter 9 Manual Command on page 9 1 for information on loading default configuration profiles Methods The DSU III ARdc provides methods for both local and remote configura tion These methods are shown in Table 2 4 Table 2 4 Configuration Methods Method Local Remote AT Commands Yes Yes V 25 Commands Yes Yes Front Panel Yes Yes VT 100 No Yes The DSU IH
16. Figure 11 15 to initiate a test using a test pattern 11 18 DSU Ill ARdc User Manual 61200270L1 1 Chapter 11 Testing and Troubleshooting 1 DTE LO O P LL 2 LO OP ONLY RT 3 DTE ONLY 4 DTE W ITH TP 5 TEST PATTERN 1 LOCAL UNIT 2 REMOTE UNIT Figure 11 15 Initiating a Self Test Interpreting Test Results Once Self Test is activated the LEDs cycle on and off as the system runs the self test A pass or fail status will be displayed on the LCD along with a checksum indicating the current firmware revision REMOTE UNIT DIAGNOSTICS A remote DSU III ARdc can perform seven different tests see Table 11 5 Table 11 5 Remote Tests and AT Commands Front AT Description Panel Command 1 2047 PATTERN _TO amp T7 Standard 2047 random data pattern 2 511 PATTERN _T1 amp T7 Standard 511 random data pattern 3 STRESS PTRN 1 _T2 amp T7 DDS Stress Pattern 1 4 STRESS PTRN 2 _T3 amp T7 DDS Stress Pattern 2 5 STRESS PTRN 3 _T4 amp T7 DDS Stress Pattern 3 6 STRESS PTRN 4 _T5 amp T7 DDS Stress Pattern 4 7 DATA FROM DTE amp T6 Data from DTE The Remote Unit submenu allows a remotely installed DSU to be placed into loopback There are six test patterns to choose from or Data from the DTE may be selected 61200270L1 1 DSU Ill ARdc User Manual 11 19 Chapter 11 Testing and Troubleshooting LOCAL DSU CSU REMOTE DTE DSU CSU Tx Tx a Tx 14 3 JELOO Mur Tx p 1
17. Manual 61200270L1 1 Chapter 11 Testing and Troubleshooting LOCAL UNIT DIAGNOSTICS The local DSU III ARdc can perform six different tests see Table 11 3 Table 11 3 Test AT Commands Front AT Description Panel Display Command DTE amp Loop LL amp T10 TD RD and RX TX Loopbacks Loop Only RT T11 RX TX Loopback at DTE Interface DTE Only amp Tl TX RX Loopback at N etwork Interface DTE with TP amp T8 RX RX Loopback with Test Pattern Test Pattern amp T9 Transmit Receive Test Pattern Self Test Z Check Internal Components Resets Unit Exit Test amp T0 Stops test returns to data mode TD Customer Transmit Data RD Customer Receive Data TX Network Transmit Data RX Network Receive Data The test patterns shown in Table 11 4 are available for the DTE with TP and Test Pattern tests 61200270L1 1 DSU Ill ARdc User Manual 11 9 Chapter 11 Testing and Troubleshooting Table 11 4 DTE With Test Pattern Commands Front AT Description Panel Command 1 2047 PATTERN _TO amp T8 Standard 2047 random data pattern 2 511 PATTERN _T18T8 Standard 511 random data pattern 3 STRESS PTRN 1 _T2 amp T8 Stress pattern with alternating high and low ones densities Repeated pattern of 100 octets 1111 1111 followed by 100 octets 0000 0000 4 STRESS PTRN 2 _T3 amp T8 Stress pattern with alternating medium and low ones densities Repeated pat tern of 100 o
18. The opening menu is the access point for all other operations There are four Main menu branches Status Test Configuration and Dial Each Main menu item has several functions and sub menus to identify and access specific parameters LCD Display of the Main Menu 1 STATUS 2 TEST 3 CONFIG 4 DIAL NOTE The DIAL option is only available when the unit is configured for a Switched 56 network type For more information see Chapter 10 Dial Selection Main Menu The following paragraphs briefly describe the main menu s four branches More detailed information is provided in the individual chap ters for each branch Status Status is used to display all relevant information for the network and DTE interfaces It displays the current operating mode loop status rate of service from the network DTE data rate and format and DTE interface lead status The display returns to the status menu when the front panel 61200270L1 1 DSU Ill ARdc User Manual 3 1 Chapter 3 Operation is not accessed Refer to Chapter 12 Status Selection for more detailed information Test Test is used to control local and remote testing Select local or remote test ing and select the type of test and test pattern when required For more information see Chapter 11 Testing and Troubleshooting Configuration CONFIG Configuration is used to select network and DTE operating parameters to configure testing and dialing options and to enter a
19. and mechanical characteristics for inter faces between computers terminals and modems Defines the mechanical and electrical characteristics for connecting DTE and DCE data communications devices It defines what the interface does circuit functions and their corresponding connector pin assign ments The standard applies to both synchronous and asynchronous binary data trans mission EIA 366 An EIA interface standard for autodialing FCC part 15 of class A Radiated and conducted emissions standards set for commercial and industrial use FCC part 15 of class B Radiated and conducted emissions standards set for residential use FCC part 68 FCC Rules and regulations intended to provide protection of the telephone network from harm caused by connection of equipment to the network full duplex A circuit designed to transmit and receive data simultaneously half duplex A circuit designed to both transmit and receive data but not at the same time in band Signaling dialing diagnostics management configuration etc over the same channel used for data ISDN Integrated Services Digital Network A network architecture that enables end to end dig ital connections The network supports diverse services through integrated access arrangements and defines a limited set of standard multipurpose interfaces for equip ment vendors network providers and customers Interworking with a public switched telephone network is retained
20. as shown in Figure 6 1 The factory default setting is SCRAMBLER OFF Table 6 2 shows the equivalent AT commands for setting SCRAMBLER ON OFF for 64 kbps loop rates Table 6 2 Scrambler On Off AT Commands Front AT Description Panel Command 1 SCRAMBLER O FF _FO DTE data scrambler disabled 2 SCRAMBLER ON _Fl DTE data scrambler enabled 3 SUPPRESS LBE _F2 LBE codes from DTE suppressed 64 kbps only For 64 kbps clear channel operation there is a possibility that the DTE data sequences might mimic network loop maintenance functions and erroneously CAUTION cause other network elements to activate loopbacks To prevent this the SCRAM BLER ON or SUPPRESS LBE option should be selected for both the local and remote DSU III ARdc For loop rates of 2 4 9 6 19 2 and 38 4 kbps the DTE rates shown in Fig ure 6 2 are available 6 2 DSU Ill ARdc User Manual 61200270L1 1 Chapter 6 Configuring DTE O ptions 1 N ETW ORK OPT 1 SAMEASLOOP 1 LOCAL 2 REMOTE ENTER ADDRESS 2 DTE OPTIONS 3 TEST OPTIONS Figure 6 2 DTE Rates for Loop Rates of 2 4 9 6 19 2 and 38 4 kbps The 1 2K setting is for data mode only The unit will not respond to any in band NOTE command modes such as AT commands or V 25 bis If any command modes are set they will be disabled when the 1 2K setting is selected 61200270L1 1 DSU Ill ARdc User Manual 63 Chapter 6 Configuring DTE O ptions Connector Type T
21. be sent at irregular intervals by preceding each character with a start bit followed by a stop bit AT commands Also known as the Hayes Standard AT Command Set A language that enables PC com munications software to control asynchronous and Hayes compatible modems AT is short for attention AWG American Wire Gauge Standard measuring gauge for nonferrous conductors i e non iron and non steel The higher the AWG number the thinner the wire BERT Bit error rate test A known pattern of bits is transmitted and the errors received are counted to figure the bit error rate The idea is to measure the quality of data transmis sion The bit error rate is the ratio of received bits that are in error relative to the number of bits received usually expressed in a power of 10 61200270L1 1 DSU Ill ARdc User Manual Glossary 5 Glossary bisync Bisynchronous transmission A half duplex character oriented synchronous data com munications transmission method originated by IBM in 1964 carrier detect CD A signal generated by a DCE a modem or DSU CSU CD informs the DTE device if the DCE is receiving a carrier signal from the line If the CD light is on the device is speaking to another device channel service unit CSU A DCE device used to connect a digital phone line T1 or Switched 56 line coming in from the phone company to either a multiplexer channel bank or directly to another device producing a digital signal for exam
22. it is certain the equipment is not malfunctioning This unit contains no user serviceable parts An FCC compliant telephone cord with a modular plug is provided with this equipment This equipment is designed to be connected to the tele phone network or premises wiring using an FCC compatible modular jack which is Part 68 compliant The following information may be required when applying to the local telephone company for leased line facilities Service Type Digital Facility Service Order Network Interface Code Code Jacks 2 4 kbps Digital Interface 04DU5 24 6 0F RJ 48S 4 8 kbps Digital Interface 04DU5 48 6 0F RJ 48S 9 6 kbps Digital Interface 04DU5 96 6 0F RJ 48S 19 2 kbps Digital Interface 04DU5 19 6 0F RJ 48S 38 4 kbps Digital Interface 04DU5 38 6 0F RJ 48S 56 kbps Digital Interface 04DU5 56 6 0F RJ 48S 64 kbps Digital Interface 04DU5 64 6 0F RJ 48S PSDS Type 1 04DU5 56B 6 0F RJ 48S FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFEREN CE STATEMENT This equipment has been tested and found to comply with the limits for a Class B dig ital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio frequencies Operation of this equipment in a residenti
23. or ADTRAN Sales Applications Engineering 800 615 1176 Sales 800 827 0807 Post Sale Support Please contact your local distributor first If your local distributor cannot help please contact ADTRAN Technical Support and have the unit serial namber available Technical Support 888 4ADTRAN Repair and Return If ADTRAN Technical Support determines that a repair is needed Technical Support will coordinate with the Customer and Product Service CAPS de partment to issue a Return Material Authorization RMA number For infor mation regarding equipment currently in house or possible fees associated with repair contact CAPS directly at the following number CAPS Department 256 963 8722 Identify the RMA number clearly on the package and return to the following address ADTRAN Inc CAPS Department 6767 Old Madison Pike Progress Center Building 6 Suite 690 Huntsville Alabama 35807
24. ption Set 2 8A 01 O ption Set 3 8A 02 O ption Set 4 8A 03 N etwork Address Lock 92 DSU Ill ARdc User Manual 61200270L1 1 61200270L1 1 Table 9 1 Manual Commands Continued Chapter 9 Manual Command Command Description Command Value N etwork Addr Unlock C3 00 N etwork Addr Lock C3 01 DSU Ill ARdc User Manual 93 Chapter 9 Manual Command 94 DSU Ill ARdc User Manual 61200270L1 1 Chapter 10 Dial Selection DIAL OPTIONS The DIAL selection available in the Main menu 4 Dial includes options for manual dialing redialing and dialing stored numbers The DIAL selection is available for use only if AT amp T MCI SW56 or US SPRINT SW56 is the selected NETWORK TYPE Figure 10 1 shows the menu path used to access these options Select Stored N umber 1 A 3 REDIAL LAST Figure 10 1 Dial Options Menu Dial Stored This option allows a stored number to be dialed The numbers are stored within the CONFIG selection Figure 10 2 shows the menu path used to store phone numbers 61200270L1 1 DSU Ill ARdc User Manual 10 1 Chapter 10 Dial Selection 1 LOCAL 1 N ETW O RK OPT 2 DTE OPTIONS 3 TEST OPTIONS 3 CONFIG 2 REMOTE l ENTER ADDRESS STO RED N UM BER 1 PHONE NUMBERS EDIT 1 10 NNNNNNN 4 DIAL OPTIONS Figure 10 2 2 AUTO AN SW ER 5 MANUALCOMMAND Path to Storing Numbers Option See Chapter 8 Configuring Dial Options on page 8 1 for mor
25. remote unit is turned off or discon nected Check remote unit Contact telco service provider 61200270L1 1 DSU Ill ARdc User Manual 115 Chapter 11 Testing and Troubleshooting Message Meaning Probable Cause Action CHECK TELCO Transmit receive pair fTelco wall jack wired Switch wire pairs in wall jack LINE reversal detected incorrectly or contact telco service pro vider TEST FROM telco activated a Telco is testing circuit W ait until testis complete or TELCO loopback to test the contact telco service pro DDS circuit vider DSU Ill ARdc User Manual 61200270L1 1 Chapter 11 Testing and Troubleshooting Troubleshooting New Installs Before initiating diagnostics on a newly installed unit and or DDS circuit and before contacting ADTRAN Technical Support please check the items in Table 11 2 to ensure the unit is configured properly Table 11 2 Troubleshooting New Installs Configuration Item Option Selection Action to Check DTE Type EIA 232 or V 35 From the CONFIG menu select the type of DTE interface option to con nect to the DSU CSU Loop Rate Auto 2 4 to 64 kbps From the CONFIG menu select the DDS loop rate of the DDS circuit Data Format Async or Sync From the CONFIG menu select the type of data to be used DTE Cable N A Verify DTE cable connection to the proper DTE connector on the DSU CSU Telco Cable N A Verify the telc
26. units this command hangs up the dial backup line and initiates an attempt to re establish the main DDS line There are no parameters associated with this command Possible indications include VAL CNX and CFIxx CNL Configuration Local This command is used to pass AT commands to the local modem via the V 25 bis command processor This allows the DSU III ARdc to be config ured with AT commands via a synchronous interface The command has the following format CNL LOCAL PASSWORD JAT ONE OR MORE AT COMMANDS A local password may not be required depending on the present configu ration of the unit Responses to CNL commands are returned in the data format currently configured Possible responses include VAL and INVn CNR Configuration Remote This command is used to pass AT commands over the network to the remote DSU via the V 25 bis command processor This allows a remote DSU III ARdc to be configured from a synchronous interface The com mand s format is as follows CNR REMOTE PASSWORD AT ONE OR MORE AT COMMANDS The remote password may or may not be required depending on the present configuration of the remote unit Responses to the CNR com mands are returned in the data format currently configured Possible responses include VAL and INVn 61200270L1 1 DSU Ill ARdc User Manual 29 Chapter 2 Installation Switched 56 Operation 2 10 CRN Call Request with Number When the DSU III ARdc i
27. 270L1 1 DSU Ill ARdc User Manual Glossary 11 Glossary Glossary 12 DSU Ill ARdc User Manual 61200270L1 1 A alarm indication 3 6 answer call 12 2 answering call 12 3 anti stream 6 10 AT command 6 11 factory default 6 11 AT commands 2 5 11 1 11 9 anti stream 6 11 clear to send CS 6 9 data format 6 5 data set ready SR 6 15 data terminal ready TR 6 13 DTE rate 6 1 EIA local loopback LLB 7 3 EIA remote loopback RLB 7 4 phone number 8 2 scrambler on off 6 2 test timeout 7 2 transmit clock 6 7 Cc call disconnect 12 4 cancel 3 3 3 6 carrier detect CD 3 6 6 12 check telco line 12 3 clear to send CS 3 6 6 8 AT commands 6 9 clock source 5 5 configuration 2 4 dial backup 8 1 61200270L1 1 Index DTE options 6 1 local 4 1 network options 5 1 test options 7 1 configuration CONFIG 3 2 configuration local CNL 2 9 configuration remote CNR 2 9 connector EIA 232 D 1 connector type 6 4 factory default 6 4 customer service 2 1 D data buffering E 1 data format 6 5 AT commands 6 5 factory default 6 5 data mode 12 2 data set ready SR 12 4 AT commands 6 15 factory default 6 14 data terminal ready 12 4 data terminal ready TR AT commands 6 13 factory default 6 13 DDS network status 12 2 Diagnostics E 2 dial 3 2 dial backup configuration 8 1 dial options 4 1 10 1 dial up operation B 1 DSU Ill ARdc User Manual Index 1 Index dialing 12 2 digital data service DDS 1 1
28. 3 Figure 11 4 Figure 11 5 Figure 11 6 Figure 11 7 Figure 11 8 Figure 11 9 Figure 11 10 Figure 11 11 Figure 11 12 Figure 11 13 Figure 11 14 Figure 11 15 Figure 11 16 Figure 11 17 Figure 12 1 Figure C 1 Figure D 1 viii Sample Test Status Displays 11 3 Complete Test Menu 11 4 DIE amp OOp Test 11 11 Initiating a DTE amp Loop Test 11 11 Loop Only Test en esta 11 12 Initiating a Loop Only Test 11 13 DTE Only Test Diagram ueeeeennsnennenen 11 14 Initiating a DTE Only Test 11 14 DTE with Test PatterT oooconononnnoncnonnconnnonnconnconnnnnnnconnncanornnncnnnnona 11 15 Initiating a DTE Test with Test Pattern 11 16 Test Pattern Only 22er 11 17 Initiating a Test Using a Test Pattern nnnenenenn 11 18 Initiating a Self Test ooocinicicoconininnoninnnnnonanoncnronororaronnoninnororincnoso 11 19 V 54 RDL with Test Pattern ooooonncncconnnnonononcconnnnnnonnnocanannnnonnnonn 11 20 Initiating a Remote Test neeesssnenenenenennenenenenenennn 11 20 Examples of Status Displays 12 1 DSU to Modem Interconnect occococcnocoonconononoononononnonncnnconannanononnono C 1 EIA232 Connector sauna aan alarm D 1 DSU Ill ARdc User Manual 6120027011 Table 2 1 Table 2 2 Table 2 3 Table 2 4 Table 3 1 Table 5 1 Table 5 2 Table 5 3 Table 5 4 Table 5 5 Table 6 1 Table 6 2 Table 6 3 Table 6 4 Table 6 5 Table 6 6 Table 6 7 Table
29. 32 connector tie transmit clock lead TC to exter nal transmit ETC as shown DTE DSU III ARdc Pin 15 TC Pin 24 ETC No connection EIA 232 CONNECTOR Figure D 1 EIA 232 Connector 61200270L1 1 DSU III ARdc User Manual D 1 Appendix D ElA 232 Connector D 2 DSU Ill ARdc User Manual 61200270L1 1 Appendix E Specifications Summary SPECIFICATIONS AND FEATURES 61200270L1 1 This section describes the standard specifications and features incorpo rated in the DSU III ARdc Operating Modes Dedicated DDS point to point multipoint Switched 56 4 wire Data Rates Dedicated mode service rate 2 4 4 8 9 6 19 2 38 4 56 and 64 kbps Switched mode service rate 56 kbps DTE Rates DTE rates match service rates DTE to loop rate matching in both dedicated and switched modes Synchronous rates 1 2 2 4 4 8 9 6 19 2 38 4 56 and 64 kbps Asynchronous rates 1 2 2 4 4 8 9 6 19 2 38 4 and 57 6 kbps FCC Approval FCC part 15 class A and part 68 DTE Interfaces Both EIA 232 and V 35 electrical and physical DTE interfaces Data Buffering Internal slack buffer DSU Ill ARdc User Manual E 1 Appendix E Specifications Summary Clocking Normal DDS or private network tributary slaved to network receive clock Private network master internal clock Normal DDS with tail circuit Private network master slaved to external clock Switched Mode Dialing Options Stored number Front panel keypad DTR
30. 5 6 down arrow 3 3 3 5 DSU operational status 12 2 DSU to modem interconnect C 1 DTE amp loop LL 11 10 DTE command mode 12 2 DTE command option 6 6 DTE connectors 3 6 DTE data connection 2 2 DTE interface 3 7 11 1 DTE interface parameters 4 1 DTE only 11 13 DTE options 4 1 DTE rate 6 1 12 4 AT Commands 6 1 factory default 6 1 DTE rate same as the network 6 1 DTE rates for 56 kbps loop rate 6 1 for loop rates of 2 4 38 4 kbps 6 3 for Loop Rates of 2 4 9 6 19 2 and 38 4 kbps 6 3 E EIA local loopback LLB 7 2 AT commands 7 3 EIA remote loopback RLB 7 3 AT commands 7 4 EIA 232 connector D 1 enter 3 3 3 4 exit test 11 3 external clock 6 7 D 1 F function keys 3 3 incoming call 12 2 installation 2 1 Index 2 DSU Ill ARdc User Manual INV 2 8 INVBL 2 8 INVBM 2 8 INVCU 2 8 INVPS 2 8 INVPV 2 8 L LCD window 3 4 LED description 3 6 local configuration 4 1 local loopback 11 1 12 4 local unit test 11 9 loop only RT 11 12 loop rate 3 3 5 1 M main menu 3 1 3 5 11 3 manual command 4 1 9 1 menu structure 3 1 modem tail circuit application C 1 modem tail circuit application 6 7 C 1 N network interface connection 2 2 interface parameters 4 1 network address 5 3 network options 3 3 4 1 5 1 network rate 12 4 no frame sync 12 3 no Rx signal 12 3 no wink from CO 12 3 numeric keypad 3 4 O OOS OOF from net 12 3 6120027011 1 open loop 12 3 operation 3 1 11 1 P phone n
31. 61200270L1 1 DSU Ill ARdc User Manual Glossary 9 Glossary scrambler A device that transposes or inverts signals or otherwise encodes a message at the trans mitter to make it unintelligible at a receiver not equipped with an appropriately set descrambling device synchronous data link control SDLC A bit oriented synchronous communications protocol developed by IBM where the message may contain any collection or sequence of bits without being mistaken for a control character service The provision of telecommunications to customers by a common carrier administration or private operating agency using voice data and or video technologies simple network management protocol SNMP A control and reporting scheme widely used to manage devices from different vendors SNMP operates on top of the Internet protocol start bit In asynchronous data communications characters are sent at arbitrary intervals In order for the computer to make sense of what is coming in each character starts its transmission with a start bit This way if the first bit of the character to be transmitted is a 0 the fact of receiving a start bit always a 1 tips off the computer that the next bit is part of a transmit ted character and not just part of the inter character gap See stop bit stop bit The stop bit is an interval at the end of each asynchronous character that allows the receiv ing computer to pause before the start of the next character The stop b
32. ADRAN DSU Ill ARdc Data Service Unit USER MANUAL 61200270L1 1A September 1998 Trademark Hayes is a registered trademark of Hayes Microcomputer Products Inc ADRAN 901 Explorer Boulevard P O Box 140000 Huntsville AL 35814 4000 Phone 256 963 8000 1998 ADTRAN Inc All rights reserved Printed in USA FCC regulations require that the following information be provided in this manual 1 This equipment complies with Part 68 of the FCC rules On the bottom of the equipment housing is a label that shows the FCC registration number and Ringer Equivalence Number REN for this equipment If requested provide this information to the telephone company If this equipment causes harm to the telephone network the telephone company may temporarily discontinue service If possible advance noti fication is given otherwise notification is given as soon as possible The telephone company will advise the customer of the right to file a com plaint with the FCC The telephone company may make changes in its facilities equipment op erations or procedures that could affect the proper operation of this equipment advance notification and the opportunity to maintain uninter rupted service is given If experiencing difficulty with this equipment please contact ADTRAN for repair and warranty information The telephone company may re quire this equipment to be disconnected from the network until the prob lem is corrected or
33. CSUs Two separate troubleshooting sections are provided one Chapter 11 Testing and Troubleshooting focuses on new installs the other on existing circuits Messages from the DSU CSU The DSU III ARdc displays messages on the LCD display and LEDs con cerning the status of the unit and the local loop Ifthe Alarm LED is on one or more of the messages shown in Table 11 1 is displayed on the LCD The Status menu must be selected in order for the unit to display status mes NOTE sages Pressing Quick returns to the main menu where STATUS can be selected Table 11 1 Messages from the DSU CSU Message Meaning Probable Cause Action LOOP IS Good local loop sig Indicates good local No action required unit NORMAL _ nal being received loop properly connected to telco from the telco circuit OPEN LOOP Unit not receiving a Bad telco cable from Replace telco cable from signal from the telco the DSU to telco jack or bad circuit to telco DSU to wall jack Ifa prob lem persists contact telco provider NO RX SIGNAL Unit detects sealing current but no data signal from telco Bad conductor in telco cable from DSU to telco jack or bad cir cuit to telco Replace telco cable from DSU to wall jack Ifa prob lem persists contact telco provider OOS OOF FROM NET Unit detects an O ut of Service or Out of Frame condition from the telco Telco is having prob lems with DDS circuit or
34. Command Descriptions 61200270L1 1 The ADTRAN V 25 bis command set is a subset of the CCITT V 25 bis command set In addition to the CCITT commands supported ADTRAN has added configuration commands for both local and remote DSUs The ADTRAN V 25 bis command set follows DSU Ill ARdc User Manual 2 7 Chapter 2 Installation CIC Connect incoming call CNL Configuration local CNR Configuration remote CRN Call request with number CRS Call request using stored number DIC Disregard incoming call PRN Program number RLN Request list of numbers The following list contains possible responses to V 25 bis commands VAL Valid V 25 command processed CFIET Call failed on switched network busy detected CFIDE Call failed on switched network no wink detected CFINS Call failed no dial string in specified register NVCU Unknown command detected NVPS Invalid parameter syntax NVPV Invalid parameter value NVBL Invalid local password NVBM Invalid remote password NC Incoming call CNX Call connected If verbose wordy responses are disabled ATVO the following list of three character responses are the only ones returned VAL Valid V 25 command processed INV Invalid command received CFI Call failed INC Incoming call CNX Call connected DSU Ill ARdc User Manual 61200270L1 1 Chapter 2 Installation Syntax and Possible Responses CIC Connect Incoming Call This command causes the DSU to go on line For dial backup
35. Ill ARdc User Manual 11 13 Chapter 11 Testing and Troubleshooting LOCAL DTE DSU CSU Figure 11 9 DTE Only Test Diagram Test Purpose The DTE Only test is used for the following purposes e Verify integrity of the DTE interface e Verify integrity of connection between DTE and DSU III ARdc Initiating Follow the menu path outlined in Figure 11 10 to initiate a DTE Only test 1 DTE LO O P LL 2 L00P ONLY RT 3 DTE ONLY 1 LOCAL UNIT Figure 11 10 Initiating a DTE Only Test 11 14 DSU Ill ARdc User Manual 61200270L1 1 Chapter 11 Testing and Troubleshooting Interpreting Test Results A BERT tester must be used to interpret the test results of a DTE Only test DTE With Test Pattern The DTE with TP test pattern test is similar to the DTE Only test described previously except the test pattern is generated using the DSU CSU internal test pattern generator This test can be used to detect defi ciencies within the internal drivers and receivers of the DSU III ARdc Figure 11 11 illustrates the loopback point and the data paths for this test LOCAL DSU CSU DTE Error Test Pattern Inject Generator Error Test Pattern Clear Detector Figure 11 11 DTE with Test Pattern Test Purpose A DTE test using a test pattern is used for the following purposes e Verify integrity of the DTE interface e Verify integrity of connection between DTE and DSU III ARdc Initiating Follow the menu path ou
36. LPOS iia ee nn an nn dodo tada 11 18 AAA E E RE A 11 18 Interpreting Test Results _ ueeeesnenenennenenenenenenenenenenenenenen 11 19 Remote Unit Diagnostics isnie a ioaad ainiai aas e ENS SNo 11 19 T st Furp se aa aia sesh aeree at aae an Aaa ti iaa aeeai 11 20 A nee nsna nal 11 20 TestResults dd 11 21 Interpreting Test Results _ ueessenennenenenenenenenenenenenenenenen 11 21 Chapter 12 Status Selection cccssrsscscssersssescecscessessecececeesessecscessssssseeesesseseeees 12 1 STATUS AS Pl it ie s e ehe en ta iden 12 1 DSU Operational Status une ana 12 2 DATAMODE 2 22 ects Son ee oe oe 12 2 UNITIN TEST tice A ese es ess 12 2 DTE COMMAND MODE 1 ccecccccsccessccessecceesesesseceseeceeeesseeses 12 2 AA vA a ie Daves ha eT Be en 12 2 INCOMING CALE tdt ide 12 2 DIA TIN CG A ei 12 2 iv DSU Ill ARdc User Manual 61200270L1 1 Table of Contents ANS AAA E 12 2 LOOP IS NORMA Einicio ati 12 2 OPEN LOOP pnpa ale Pesta atts 12 3 NO RXSIGNAT re ner an aha 12 3 CHECK TELCO LINE kibontani 12 3 OOS OOF FROM NET s s ses 12 3 NO FRAME SYN Conosco 12 3 TESTEROM TELCO iaa une a era ine 12 3 RATE ADAPTING i ae reaa rene iras 12 3 ANSWERING CAL Livia miras cn 12 3 NO WINK FROM CO un anaa n Aa Erin 12 3 CALEDISCONNEC niaan arena 12 4 Network R te nr RER arean E AR Ee eera a na lic 12 4 DTE Rate Mod s 8 8 a n ew ete eves 12 4 DTE Control Leads and Status eeesesssenennnnnennennnn
37. R UP Receipt Inspection Carefully inspect the DSU III ARdc for any shipping damage If damage is suspected file a claim immediately with the carrier and contact ADTRAN Customer Service If possible keep the original shipping con tainer for use in shipping the DSU III ARdc for repair or for verification of damage during shipment Equipment Provided Power Up 61200270L1 1 The following items are included in ADTRAN shipments of the DSU IH ARdc DSU III ARdc unit e An 68 position modular to 8 position modular cable e The user manual The customer must provide an EJA 232 interface cable with standard 25 pin male D type connectors Cannon or Cinch DB 19604 432 or a V 35 cable Each DSU unit is provided with a three position terminal block which accomodates 12 to 26 AWG wire The positive and negative termi nals connect to a 24 to 48 VDC 0 4A power source DSU Ill ARdc User Manual 2 1 Chapter 2 Installation CAUTION The chassis should be connected to earth ground The following UL requirements must be met during installation 1 The unit must be connected to a reliably grounded 24 or 48 VDC source which is electrically isolated from the AC source 2 The branch circuit overcurrent protection should be a fuse or circuit breaker rated 48 V 15 A 3 The unit should be installed in accordance with the requirements of NEC NFPA 70 4 A readily accessible disconnect device that is suitably approved and rated
38. R goes off When TR goes on if the DSU does not receive a command in the number of seconds set in S40 the DSU goes into data mode SR Options The SR OPTIONS menu is used to select the operating mode for the data set ready SR lead Press Shift A to activate the SR OPTIONS sub menu The factory default setting is OFF TEST ONLY shown in Figure 6 11 1 N ETW ORK OPT 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 2 DTE OPTIONS 4 DTE CMD OPTION 5 TRAN SMIT CLO CK 1 LOCAL 6 CS OPTIONS 7 AN TISTREAM 3 CONFIG B CD OPTIONS 1 FO RCED ON 2 REMOTE ENTER ADDRESS 9 TR OPTIONS 2 0FFOOS ONLY A SR OPTIONS 3 0 FF LOCD ONLY 4 0FF TEST ONLY 5 0 FF TEST 005 3 TEST OPTIONS 6 0 FF TEST LOCD 4 DIALO PTIONS 5 MANUAL Figure 6 11 Setting SR Options 6 14 DSU Ill ARdc User Manual 61200270L1 1 Chapter 6 Configuring DTE O ptions Table 6 10 shows the AT commands for setting SR OPTIONS Table 6 10 SR Options AT Commands Front AT Description Panel Command 1 FORCED ON amp S0 Always on 2 0FFOOS ONL amp S1 Off when network Out Of Service 00S 3 0 FF LOCD ONLY amp S3 O ff 5 seconds after dis connect SW 56 only 4 0 FF TEST ONLY S0_CO Off when unit is in test 5 0 FF TEST 0 0S amp S1 CO Offin testor OOS 6 0 FF TEST LOCD amp 55 Off 5 seconds after dis connect or test 61200270L1 1 DSU Ill ARdc User Manual 6 15 Chapter 6 Configuring DTE O ptions 6 16 DSU Ill ARdc User Manual 61200270L1
39. S service rates yielding DTE rates of 1 2 2 4 4 8 9 6 19 2 38 4 sync or async 56 and 64 kbps An additional rate of 57 6 kbps is avail able in async mode At the service rates of 56 kbps and 64 kbps the unit can be configured to run slower DTE rates async or sync 4 Wire Switched 56 Overview This switched 4 wire DDS allows customers to pay for data connection only for the time the unit is active The regional operating companies pro vide the 4 wire local loop service to SW56 customers In SW56 mode the DSU III ARdc supports DTE rates of 1 2 2 4 4 8 9 6 19 2 38 4 async or sync and 56 kbps sync An additional DTE rate of 57 6 kbps is available in async modes DSU Ill ARdc User Manual 61200270L1 1 Chapter 1 Introduction WARRANTY AND CUSTOMER SERVICE 61200270L1 1 ADTRAN will replace or repair this product within five years from the date of shipment if it does not meet its published specifications or fails while in service For detailed warranty repair and return information refer to the ADTRAN Equipment Warranty and Repair and Return Policy Procedure Return Material Authorization RMA is required prior to returning equipment to ADTRAN For service RMA requests or further information contact one of the numbers listed on the inside back cover of this manual DSU Ill ARdc User Manual 13 Chapter 1 Introduction 14 DSU Ill ARdc User Manual 61200270L1 1 Chapter 2 Installation UNPACK INSPECT POWE
40. U Ill ARdc User Manual 53 Chapter 5 Configuring N etwork O ptions 1 LO O P RATE 2 N ETW ORK ADDR 1 NETWORK OPT 1 DISA BLED 3 REMOTE CONFIG 2 ENABLED 1 LOCAL 2 DTE OPTIONS 2 REMOTE JENTER ADDRESS B3 TEST O PTIO N S 5 MANUALCOMMAND 5 CLO CK SOURCE Figure 5 3 Enabling Disabling Remote Configuration Table 5 3 shows the equivalent AT commands used to enable or disable remote configuration Table 5 3 Remote Configuration Commands Front AT Description Panel Command 1 DISA BLE amp P4 Disable remote configuration 2 EN ABLE amp P5 Enable remote configuration Network Type This option configures the DSU III ARdc for the specific type of network being used The factory default setting is DEDICATED see Fig ure 5 4 54 DSU Ill ARdc User Manual 61200270L1 1 Chapter 5 Configuring N etwork O ptions 1 NETWORK OPT 4 NETWORK TYPE 1 DEDICATED 2 AT amp T MCI SW 56 3 US SPRINT SW 56 5 CLO CK SOURCE 2 REMOTE ENTER ADDRESS 2 DTE OPTIONS TEST OPTIONS 4 DIAL OPTIONS 5 MANUALCOMMAND Figure 5 4 Setting Network Type Options Table 5 4 shows the equivalent AT commands that perform the same con figuration functions Table 5 4 Network Type Commands Front AT Description Panel Command 1 DEDICATED amp LO Any 4 wire DDS network 2 AT amp T MCI amp L1 AT amp T MCI Switched 56 service 3 US SPRINT a
41. UTO the DSU will automatically attempt to adapt to the loop rate If the loop rate is known select the rate from the menu The various loop rates and format selections are listed in Figure 5 1 with the equivalent AT commands that perform the same configuration functions Table 5 1 Loop Rate Commands Front Panel AT Command 1 AUTO B0 2 2 4K B1 3 4 8K B2 4 9 6K B3 5 19 2K B4 6 38 4K B5 7 56K B6 8 64K clear channel B7 DSU Ill ARdc User Manual 61200270L1 1 Chapter 5 Configuring N etwork O ptions Network Address A two digit decimal address can be assigned to each DSU III ARdc This addressing capability makes it possible to perform remote configuration and testing in point to point and multi drop networks Figure 5 2 shows the menu path used to change the network address The factory default setting is 0 ENTER NETWORK 3 REMOTE CONFIG 5 CLO CK SOURCE 5 MANUALCOMMAND Figure 5 2 Setting the Network Address Table 5 2 shows the AT command used to set the network address Table 5 2 Network Address Command Front AT Description Panel Command XX Decimal _N xx Assigns a two digit network address Remote Configuration This option sets up the DSU III ARdc to accept or reject remote configura tion commands Figure 5 3 shows the menu path for enabling disabling remote configuration The factory default setting is ENABLED 61200270L1 1 DS
42. al area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Shielded cables must be used with this unit to ensure compliances with Class A FCC limits x Changes or modifications to this unit not expressly approved by ADTRAN N ARNING will void the user s authority to operate the equipment CANADIAN EMISSIONS REQUIREMENTS This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the interference causing equipment standard entitled Digital Apparatus ICES 003 of the Department of Communications Cet appareil nuerique respecte les limites de bruits radioelectriques applicables aux appareils numeriques de Class B prescrites dans la norme sur le materiel brouilleur Appareils Numeriques NMB 003 edictee par le ministre des Communications CANADIAN EQUIPMENT LIMITATIONS Notice The Canadian Industry and Science Canada label identifies certified equip ment This certification means that the equipment meets certain telecommunications network protective operational and safety requirements The Department does not guarantee the equipment will operate to the user s satisfaction Before installing this equipment ensure that it is permissible to be connected to the fa cilities of the local telecommunications company The equipment must also be in stalled using an acceptable method of connection In some c
43. ands that can be used to set the DATA FOR MAT Table 6 3 Data Format Commands Front AT Command Description Panel 1 ASYNCHRONOUS amp Q0 Always asynchronous 2 SYNCHRONOUS amp Q2 Always synchronous For asynchronous options select the length of the data bytes 1 ASYNC 9 BITS N A 9 bits including start stop parity 2 ASYNC 10 BITS N A 10 bits including start stop parity 3 ASYNC 11 BITS N A 11 bits including start stop parity 61200270L1 1 DSU Ill ARdc User Manual 65 Chapter 6 Configuring DTE O ptions DTE Command Option The DTE COMMAND option is used to enable AT commands from the DTE enable V 25 bis SDLC synchronous data link control commands enable V 25 bisync and async or disable all DTE command modes see Figure 6 5 1 N ETW ORK OPT 2 DTE OPTIONS 1 LOCAL 3 CONFIG 2 REMOTE ENTER ADDRES 3 TEST OPTIONS 4 DIAL OPTIONS 5 MANUALCOMMAND 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 1 DISABLED 4 DTE CMD OPTION 2 ATCOMMAND SET 3 V 25 SYNC 4 V 25 BSC ASYNC 5 TRAN SMIT CLO CK 6 CS OPTIONS 7 AN TI STREAM 8 CD OPTIONS 9 TR OPTIONS A SR OPTIONS Figure 6 5 Selecting DTE Command Option When the unit is in DTE CMD OPTION mode idle in SW56 mode forced with TR option or from escape sequence in AT mode with AT COMMAND SET or NOTE V 25 SYNC selected the DTE format is independent of the DATA FORMAT option However if V 25 BSC ASYNC is selected the unit will use V
44. anual 61200270L1 1 Chapter 6 Configuring DTE O ptions 2 DTE OPTIONS 1 TIMER OFF 2 TIME 10 SEC 3 TIME 30 SEC 4 TIME 60 SEC 1 LOCAL 2 REMO TE JENTER ADDRESS 3 TEST OPTIONS 4 DIALO PTION S 5 MANUALCOMMAND Figure 6 8 Anti Stream Options The factory default setting is TIMER OFF Table 6 7 shows the available options and their AT commands Table 6 7 Anti Stream AT Commands Front AT Description Panel Command 1 TIMEROFF TO Anti stream timer disabled 2 TIME 10 SEC T1 Timeout equals 10 seconds 3 TIME 30 SEC T2 Timeout equals 30 seconds 4 TIME 60 SEC T3 Timeout equals 60 seconds 61200270L1 1 DSU Ill ARdc User Manual 6 11 Chapter 6 Configuring DTE O ptions CD Options The CD OPTIONS menu is used to select one of three different control modes for the receive line signal detector CD lead The default factory setting is NORMAL see Figure 6 9 1 N ETW ORK OPT 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 4 DTE CMD OPTION 5 TRAN SMIT CLOCK 2 DTE OPTIONS 1 LOCAL 2 REMOTE JENTER ADDRESS Figure 6 9 Selecting CD Options 7 AN TI STREAM 1 FORCED ON 2 NORMAL 3 0 FF WITH LOCD 9 TR OPTIONS 3 TEST OPTIONS 4 DIAL OPTION S 5 MANUALCOMMAND Table 6 8 shows the equivalent AT commands for setting CD options Table 6 8 CD Options AT Commands Front AT Description Panel Command 1 FORCED ON amp C0 On all the
45. ases the company s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly telephone extension cord Compliance with the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadian mainte nance facility designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecommunications com pany cause to request the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connections of the power utility telephone lines and internal metallic water pipe system if present are connected together This precaution may be particularly important in rural areas Users should not attempt to make such connections themselves but should CAUTION contact the appropriate electric inspection authority or an electrician as appropriate The Load Number LN assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the device to prevent overloading The termination on a loop may consist of any combination of devices subject only to the requirement that the total of the Load Numbers of all devices does not exceed 100 IMPORTANT SAFETY INSTRUCTIONS When using your telephone equipment please follow these basic safety pr
46. b ea he tha A 6 4 ii DSU III ARdc User Manual 61200270L1 1 Table of Contents Data Formatare nena a andes an dea dale seen 6 5 DTE Command Optimista dc 6 6 Transmit Clockicanaia rai 6 7 ES OP ONS iki iii ee Ro a Ad 6 8 Ant Stream ede aiso een AEE a E Aa selec en cuess OR RE a 6 10 CD OPON Satins isisi e r a as iaia ine at 6 12 TROPUO S pian de 6 13 ROPA adios as 6 14 Chapter 7 Configuring Test Options sesesesesesesenenenensnensnenensnenenenenensnensnsnenensnenee 7 1 Test OPON Sa iaae a a a ear aiaa aan ar a ea ee Ta aaa a aE E stexenerradshagereasaes 7 1 Test TUM CO ulti dl essen nn hb 7 1 Remote Digital Loopback c c s ceiscsissesesscesesevevesaltvadecesdeesasscestisbesedesessvesetess 7 2 EIA Local Loopb ck nnnsenstiasnittiekiesuiietenaitpi en ie 7 2 BIA Remote Loopback sicario taa 7 3 Chapter 8 Configuring Dial Opti0MS ococococononnnnnsmmmmmmmmm 8 1 Dial Options tomas instalas neubau 8 1 Phone Number arabic adentbeunehssgednnin 8 1 TO AS We a nn nennt leiten diia 8 2 Chapter 9 Manual Command ssssessessssensssssnsssnensnsnsesnsnsnensnsnsnsnsnnnsnsnsnnsnenensene 9 1 Manual Command dates deleitando 9 1 Chapter 10 Dial Selection ooonnocononinonononononococononononononononononononononononononononorononononononos 10 1 Dial Optioris coo lot 10 1 Dial Stored usan Bender ana 10 1 Enter Dial AAA anni ann 10 2 Redial Last 2 2 222220 nennen 10 2 Chapter 11 Testing and Troubleshooting sueessesse
47. cccccsccssscesseceseecssceesseeseeesaeeeseees 6 11 CD Options AT Commands encococcccconononicnnnonininanonononancnnnonananananonono 6 12 TR Options AT Commands eemecocncononononacananinononanananonononananononononoso 6 13 SR Options AT Commands enccoccccconinononocananonononanonononononananononononoso 6 15 Test Timeout AT Commands eoccoocccccnnnnconnnnnnononnconnnonanonananinannnnccnns 7 2 Remote Digital Loopback AT Commands eeeen 7 2 EIA Local Loopback AT Commands ueesennnenenn 7 3 EIA Remote Loopback AT Commands eeene 7 4 AT Command for Storing Phone Numbers conccicccocacicicnnnaninoneneso 8 2 AT Commands for Auto Answer coccoconccconnnoonnnonnconnnnnnncnnnacnncnanocnna 8 2 Manual Commands reines hii ea a a a aa i 9 2 Messages from the DSU CSU cncncocncoconocacanonononononanononononanononononoso 11 5 Troubleshooting New Installs enn 11 7 Test AT Commands sendien inen a ata a E 11 9 DTE With Test Pattern Commands cccccccssscesseceeseesseeeeeeees 11 10 Remote Tests and AT Commands eocccccccncoccnonennccnnencnonncnnnnnncnnono 11 19 AT Commands sisian a a a a hh ssi aA aA A 1 Default Configuration Profiles B 2 DSU Ill ARdc User Manual List of Tables x DSU Ill ARdc User Manual 6120027011 1 Chapter 1 Introduction PRODUCT OVERVIEW The ADTRAN DSU III ARdc provides a reliable high speed data connec tion for customer data terminal equipment DTE through digital data service DDS lines or
48. cription AA Protective G round PG BA Transmit Data TD BB Receive Data RD CA Request to Send RS CB Clear to Send CS CC Data Set Ready SR AB Signal Ground SG CF Received Line Signal Detector CD 12 Test Point 12 Test Point DB Transmit Clock TC DD Receive Clock RC Local Loopback LL CD Data Terminal Ready TR Remote Loopback RL CE Ring Indicator RI DA External TX Clock ETC Test Indicator TI N N N e e ele n el ol col SI ul of OP S ol UI A wi N m N gt N uo 61200270L1 1 DSU Ill ARdc User Manual 23 Chapter 2 Installation Table 2 3 Pin Assignments for Primary V 35 Connector Pin CCITT Description A 101 Protective Ground PG B 102 Signal Ground SG C 105 Request to Send RS D 106 Clear to Send CS E 107 Data Set Ready SR F 109 Received Line Signal Detector CD H Data Terminal Ready TR J Ring Indicator RI L Local Loopback LL N Remote Loopback RL R 104 Received Data RD A T 104 Received Data RD B V 115 Receiver Signal Element Timing SC RA X 115 Receiver Signal Element Timing SC RB P 103 Transmitted Data SD A S 103 Transmitted Data SDB Y 114 Transmitter Signal Element Timing SC T A AA 114 Transmitter Signal Element Timing SC T B U 113 External TX Signal Element SC X A W 113
49. ctets 0111 1110 fol lowed by 100 octets 0000 0000 5 STRESS PTRN 3 _T4 amp T8 Stress pattern with medium ones den sity Continuous series of octets 0011 0010 6 STRESS PTRN 4 _T58T8 Stress pattern with low ones density Continuous series of octets 0100 0000 DTE amp Loop LL Test Description The DTE amp Loop test splits the DSU III ARdc into two separate DTE and loop interface sections and then loops the receive data of each interface back to its respective transmit data The DTE amp Loop test provides a bidi rectional loopback at the DSU CSU Figure 11 5 illustrates the loopback points and the signal paths for this test 11 10 DSU Ill ARdc User Manual 61200270L1 1 Chapter 11 Testing and Troubleshooting LOCAL DSU CSU DTE Loopback Local 4 wire Loopback Figure 11 5 DTE amp Loop Test Test Purpose The DTE amp Loop test is used for the following purposes e Verify integrity of the DTE interface and cable e Provide a loopback for network tests Initiating Follow the menu path outlined in Figure 11 6 to initiate a DTE Loop Test 1 DTE amp LOOP LL 2 LO 0P ONLY RT 1 LOCAL UNIT 2 TEST 2 REMOTE UNIT Figure 11 6 Initiating a DTE amp Loop Test 61200270L1 1 DSU Ill ARdc User Manual 11 11 Chapter 11 Testing and Troubleshooting Interpreting Test Results A BERT tester must be used to interpret the test results of a DTE Loop test Loop Only RT
50. dialing of stored number In band AT commands V 25 bis in band dialing Diagnostics Network CSU and DSU loopbacks User Local DTE and loop remote V 54 Test Patterns 2047 511 DDS stress patterns 1 to 4 Line Requirements Loop transmission parameters as defined in AT amp T PUB 62310 Dedicated DDS AT amp T PUB 41468 Switched 56 SPRINT TS 0046 Switched 56 Line Interface RJ 48S 4 wire full duplex Receiver Sensitivity 45 dB at all rates E 2 DSU Ill ARdc User Manual 61200270L1 1 61200270L1 1 Appendix E Specifications Summary Environment Operating Temperature 0 C to 50 C 32 F to 122 F Storage Temperature 20 C to 70 C 4 F to 158 F Relative Humidity Up to 95 noncondensing Dimensions 2 25 H 8 75 W 10 25 D Weight 3 lbs Power 24 to 48 VDC 8 W MTBF 334 561 hours DSU Ill ARdc User Manual E3 Appendix E Specifications Summary E4 DSU Ill ARdc User Manual 61200270L1 1 Glossary 2047 A pseudorandom test pattern that is repeated every 2047 bits used to test DSU CSUs 511 A pseudorandom test pattern that is repeated every 511 bits used to test DSU CSUs 4 wire switched 56 An AT amp T proprietary 56 64 kbps switched digital data service offered by telco service providers and delivered to users over 4 copper wires Compatible with the ADTRAN DSU III S4W and with the DSU III TDM 4 wire Switched 56 TDM option asynchronous A method of data transmission which allows characters to
51. dress none AT Pn Front Panel Enable Disable 0 AT_Rn LB Enable Disable 0 AT_S xx Set Serial N umber none AT_Tn Select Test Pattern 0 AT_Xn Clock Source Select 0 A2 DSU Ill ARdc User Manual 61200270L1 1 Appendix B Default Configuration Profiles DEFAULT CONFIGURATION PROFILES The DSU III ARde contains four different user profiles sets of configura tions options stored in read only memory see Table B 1 The unit is shipped from the factory with profile 1 loaded into the nonvolatile con figuration memory See Chapter 2 Installation and Chapter 9 Manual Command for more information Profile 1 Profile 1 is configured for a 56 kbps synchronous point to point or dial up operation with a V 35 connector Profile 2 Use profile 2 for a 56 kbps synchronous point to point or dial up opera tion with an EIA 232 connector Profile 3 Use profile 3 for a SW56 asynchronous operation with CS and CD forced on Profile 4 Use profile 4 for a SW56 operation with DTR idle when off 61200270L1 1 DSU Ill ARdc User Manual B 1 Appendix B Default Configuration Profiles Table B 1 Default Configuration Profiles Profile Numbers 00 1 01 2 02 3 03 4 Manual Command Escape Character 43 2BH 43 2BH 43 2BH 43 2BH CR Character 13 0DH 13 0DH 13 0DH 13 0DH LF Character 10 0AH 10 0AH 10 0AH 10 0AH BS Character 8 8 8 8 SW 56 Abor
52. e information Enter Dial This option allows you to enter a phone number of up to 36 digits for the DSU III ARdc to dial Redial Last Selecting this option redials the last phone number entered DSU Ill ARdc User Manual 61200270L1 1 Chapter11 Testing and Troubleshooting TEST OVERVIEW The DSU III ARdc performs a variety of diagnostic functions that isolate portions of the circuit to identify the problem source Tests may be initi ated and terminated from the front panel or the DTE interface In asyn chronous mode AT commands can control the testing from the DTE interface For synchronous operation V 25 bis commands can provide test control The unit also responds to standard DDS network tests initiated from telco test centers In addition it can run several tests such as local and remote loopbacks to aid in problem isolation See Figure 11 1 for an example illustration of normal operation LOCAL REMOTE DTE DSU CSU DSU CSU DTE E TD Tx Tx TD RD RD Figure 11 1 Normal Operation Before Initiating Loopback Test CAUTION All diagnostic tests disrupt data flow 61200270L1 1 DSU Ill ARdc User Manual 11 1 Chapter 11 Testing and Troubleshooting Initiating a Test Initiate tests using the following procedure 1 Select Test from the main menu by pressing 2 then press Enter See Figure 11 2 2 Specify local or remote by selecting the corresponding number fol
53. ecautions to reduce the risk of fire electrical shock or personal injury 1 Do not use this product near water such as near a bath tub wash bowl kitchen sink laundry tub in a wet basement or near a swimming pool 2 Avoid using a telephone other than a cordless type during an electrical storm There is a remote risk of shock from lightning 3 Do not use the telephone to report a gas leak in the vicinity of the leak 4 Use only the power cord power supply and or batteries indicated in the manual Do not dispose of batteries in a fire They may explode Check local codes for any special disposal instructions SAVE THESE INSTRUCTIONS Table of Contents Chapter 1 Introduction usesesesesesesesenenenenenenenenenenenenenenensnenenenensnenensnenenssensnsnenensnenen 1 1 Prod ct Overview aan kenn Nenn Ein 1 1 DOS OVERVIEW essei ieedesist heed toallitas 1 2 4 Wire Switched 56 Overview cccccccccsccessecsssecsseceseecsscecseceesesaeceseecseeeeaseeseees 1 2 Warranty and Customer Serviesdelen o ideie p hian nennen 1 3 Chapter 2 Installation esesesesesesesesenenensnenenenenenenenenenenenenenenenensnsnenenenenssensnsnenenennen 2 1 Unpack Inspect Power UP uensssnnensnsnenenensennsenennenenennnenennennnne 2 1 Receipt Inspections seen ne 8er mern 2 1 Equipment Provided ninia Dahn 2 1 Power UPisse itirim i Auden eaat andaan iaae s 2 1 Network Interface Connection ccccccscessecesseessecescecscecsecesscesaeceas
54. ecesseesseeeesesseeeaaecees 2 2 DTE Data Connection Primary DTE coococicicicicaconacinnnnarinononananonanonononan cn cnononanananononono 2 2 Conti guration iii A aaa 2 4 Configuration Methods sirios a ia 2 5 AT COMMNA S viciado ios 2 5 V 25 b1s COMMON Sii 22a En Gates Lae i 2 6 SDLG Option ci Aces 2 6 Character Formativo he creates has e 2 6 Command Structure ccccccccsssessecessecsseecscesseeeessceeeeceeeenaeceeeeces 2 7 BESYHE Option sitet cond n 2 7 Character Format ccccccsccsssecsscessccssscessecsscecseecscessecesseeessecsees 2 7 Command Structure 2 7 Asynchronous Option rmac land riendas 2 7 Character Format cccccssccsscecsscessccssecessecescecseesseessecesseeeseeceees 2 7 Command Structure eiiieaen aaa e aa oan ia ai 2 7 Command Description minima tt 2 7 Syntax and Possible Responses nneeenesnensnnenenn 2 9 CIC Connect Incoming Cal 2 9 CNL Configuration Local onnnnnnnnininnnnnininnnnncnrncnnoncorornnninnos 2 9 CNR Configuration Remote connnnnnncnnnninonicnnnnanonnncncncncnnanacncnoos 2 9 lO io AAA A A A aara 2 10 CRN Call Request with Number ooococociconcccononinonononananononononoso 2 10 61200270L1 1 DSU Ill ARdc User Manual i Table of Contents CRS Call Request Using Stored Number 2 10 DIC Disregard Incoming Call 2 10 PRN Program Numben ooocicicinnnnnoninnononncnnninnononiononinconorioninianos 2 10 RLN Request List of Numbers
55. em press the number of the item When the menu item is flashing press Enter to select it DSU III ARdc User Manual 61200270L1 1 Chapter 3 Operation Up and Down Arrows The Up and Down Arrows scroll through menu items available in the current menu Submenu items appear two at a time in a circular or wrap ping fashion When the submenu items are scrolled they continuously appear from beginning to end in a forward Down Arrow or reverse Up Arrow pattern Cancel Pressing the Cancel key stops the current activity and returns to the pre vious menu Repeat until the desired menu level is reached Numeric Keypad The numeric keypad contains the numbers 0 through 9 and alpha charac ters A through F which are used to activate menu items or enter parame ters Shift Enter alpha characters by first pressing and releasing the Shift key and then pressing the desired character To activate a menu item designated by an alpha character rather than a number display the menu item using the Up and Down Arrows press and release Shift then press the letter The active item flashes Press Enter to select the item Quick During most operations the Quick key returns the display to the Main menu During a test the Quick key returns to the top of the Test menu In SW56 operation if the unit is not in test the Quick key returns to the Dial menu 61200270L1 1 DSU Ill ARdc User Manual 35 Chapter 3 Operation REAR PANEL LED D
56. escription The DSU III ARdc has seven LED indicators RS CS TD RD CD ALM and TST These LEDs are identified as follows RS CS TD RD CD Request to Send Clear to Send Transmit Data Receive Data Carrier Detect ALM Alarm Indication TST Test Mode Manual The rear panel contains two DTE connectors which provide a V 35 or EIA 232 connection An 8 pin telco jack a DC power connector and a power switch are also located on the rear panel Pin assignments for the DTE and network connections are listed in Chapter 2 Installation The DSU III ARdc rear panel is shown in Figure 3 3 Table 3 1 defines the numbers used in Figure 3 3 DSU Ill ARdc User Manual 61200270L1 1 Chapter 3 O peration 24 48VDC 0 4A O 0000000000 O 5000000002 eae oe O 00000000 O 3 4 Figure 3 3 DSU Ill ARdc Rear View Table 3 1 Identification of Numbers Number Item Function 1 Telco Connection Connection to the dedicated circuit 2 ElA 2 32 DTE interface 3 V 35 High speed DTE interface 4 24 to 48 VDC Power connection Connection 5 Power Switch Used to turn power on or off 61200270L1 1 DSU Ill ARdc User Manual 3 7 Chapter 3 Operation 38 DSU Ill ARdc User Manual 61200270L1 1 Chapter 4 Configuration O verview LOCAL AND REMOTE CONFIGURATION The DSU IH ARdc can be configured locally using the front panel or remotely by es
57. for the EIA RLB options 61200270L1 1 DSU Ill ARdc User Manual 73 74 Chapter 7 Configuring Test O ptions 1 N ETW O RK TYPE 2 DTE OPTIONS 1 LOCAL 2 REMOTE ENTER ADDRESS Figure 7 4 ElA Remote Loopback Options 1 TEST TIMEO UT 2 RDL EN DIS 3 TEST OPTIONS 4 ElA RLB EN DIS 1 DISABLED Table 7 4 shows the equivalent AT commands for setting the EIA RLB options Table 7 4 ElA Remote Loopback AT Commands Front AT Description Panel Command 1 DISABLED _RO EIA RLB disabled 2 EN ABLED _R1 ElA RLB enabled DSU Ill ARdc User Manual 61200270L1 1 Chapter 8 Configuring Dial O ptions DIAL OPTIONS The DIAL OPTIONS menu stores up to ten phone numbers and defines the AUTO ANSWER operation of the DSU III ARdc when it is configured for Switched 56 operation Phone Number The DSU III ARdc stores up to ten numbers of 36 digits each Edit a phone number by re entering the entire number This process overwrites the previously stored number Figure 8 1 shows the menu path used to access the PHONE NUMBER option 1 N ETW O RK TYPE STO RED NUMBER TO 1 PHONE NUMBERS EDIT 1 10 JNNNNNNN 2 REMOTE JEN TER ADDRESS 4 DIAL OPTIONS 2 AUTO ANSWER 5 MANUAL Figure 8 1 Editing Stored Phone Numbers Table 8 1 shows the AT Command for storing phone numbers 61200270L1 1 DSU Ill ARdc User Manual 8 1 Chapter 8 Configuring Dial O ptions Table 8 1 AT Command for Sto
58. he CONNECTOR TYPE option is used to specify which of the primary channel connectors is used to connect to the DTE Figure 6 3 shows the menu path used to set the connector type The factory default setting is V 35 There are no AT commands available to set the connector type 1 DTE RATE 1 N ETW O RK OPT 1 ElA 2 32 2 CONNECTOR TYPE 2 V 35 DATA FO RMAT DTE CMD OPTION TRANSMIT CLOCK CS OPTIONS AN TISTREAM CD OPTIONS TR OPTIONS SR OPTIONS 2 DTE OPTIONS 2 REMOTE JENTER ADDRESS 3 TEST OPTIONS 4 DIAL O PTIONS 5 MANUALCOMMAND Figure 6 3 Selecting the Connector Type 64 DSU Ill ARdc User Manual 61200270L1 1 Chapter 6 Configuring DTE O ptions Data Format The DATA FORMAT option is used to select either the SYNCHRONOUS or ASYNCHRONOUS mode of operation for the DTE interface The fac tory default setting is SYNCHRONOUS see Figure 6 4 If ASYNCHRO NOUS is chosen the length of the data bytes must be selected 1 N ETW ORK OPT 1 DTE RATE 1 ASYNC 9 BITS 2 ASYNC 10 BITS 3 ASYNC 11 BITS 3 DATA FORMAT 1 ASYNCHRONOUS 2 DTE OPTIONS 2 SYNCHRONOUS 1 LOCAL 2 REMOTE JENTER ADDRESS 4 DTE CMD OPTION 5 TRAN SMIT CLOCK 6 CS OPTIONS 7 AN TI STREAM 8 CD OPTIONS 9 TR OPTIONS A SR OPTIONS 3 TEST OPTIONS 4 DIAL O PTIO NS 5 MANUALCOMMAND Figure 6 4 Selecting Data Format Table 6 3 shows the AT comm
59. it is always a 0 See start bit sw itched In regard to DSU CSUs the ability to perform the functions of establishing and releasing connections on a per call basis between two or more circuits services or communications systems The DSU III S2W and DSU III S4W are examples of Switched 56 DSU CSUs synchronous Communications in which the timing is achieved by sharing a single clock Each end of the transmission synchronizes itself with the use of clocks and information sent along with the transmitted data Glossary 10 DSU Ill ARdc User Manual 61200270L1 1 Glossary tail circuit A feeder circuit which may be digital or analog that provides an access line to a digital or analog network UL Underwriters Laboratories A laboratory established by the National Board of Fire Underwriters that tests equipment materials and systems that may affect insurance risks with special reference to fire dangers and other hazards to life V 25 bis Automatic calling and answering command set including the ability to work with async bisync and HDLC devices Provides a small subset of the functions of the Hayes Stan dard AT Command Set V 35 CCITT standard for trunk interface between a network access device and a packet net work that defines signaling for data rates greater than 19 2 kbps VT 100 A non intelligent terminal or terminal emulation mode used for asynchronous communi cations Used to configure the ADTRAN SMART 16 Shelf 61200
60. manual command This menu branch is divided into several chapters for easier reference The division includes a brief overview chapter followed by a separate chapter for each of the five sub menus of the CONFIG branch Chapter 5 Configuring Network Options Chapter 6 Configuring DTE Options Chapter 7 Configuring Test Options Chapter 8 Configuring Dial Options and Chapter 9 Manual Command Dial Dial provides manual dialing functions Key in a number to dial select one of the ten stored numbers or redial the last dialed number This menu is available for use only when AT amp T MCI SW56 or US SPRINT SW56 is the selected network type See Chapter 10 Dial Selection for more information DSU Ill ARdc User Manual 61200270L1 1 Chapter 3 Operation Basic Menu Travel Four function keys on the left side of the DSU IIT ARdc keypad allow the various menu branches to be entered exited and scrolled through The four function keys are defined below Enter Selects a displayed item Up Arrow Scrolls up the sub menu items Down Arrow Scrolls down the sub menu items Cancel Exits back one level from the current branch of the menu To choose a menu item press the corresponding number or alpha charac ter on the keypad press Shift to activate alpha characters The item flashes to show it is the currently selected active choice Pressing either the Up or Down Arrow scrolls through the available menu items P
61. mp 2 US SPRINT Switched 56 service When AT amp T MCI SW56 or US SPRINT SW56 is selected the Main menu dis CAUTION plays the DIAL selection Clock Source The CLOCK SOURCE options specify the timing source for the DSU III ARadc s internal circuitry The factory default setting is FROM NET WORK see Figure 5 5 61200270L1 1 DSU Ill ARdc User Manual 55 Chapter 5 Configuring N etwork O ptions 56 1 NETWORK OPT TW O RK TYPE 1 LOCAL 2 DTE OPTIONS 3 TEST OPTIONS 2 REMOTE JENTER ADDRESS 4 DIAL O PTION S 5 MANUALCOMMAND 5 CLOCK SOURCE 1 MASTER 2 FROM NETWORK Figure 5 5 Setting the Clock Source When operating on a DDS network the timing should be FROM NET WORK On a point to point private network one DSU III ARdc must be set for MASTER and the other set for FROM NETWORK Table 5 5 shows the equivalent AT commands for setting the clock source Select Master timing only if the circuit has no timing source for example two CAUTION DSUs and a crossover cable Table 5 5 Clock Source Commands Front AT Description Panel Command 1 M ASTER _X0 DSU is the master timing source 2 FROM NETWORK _X1 N etwork Rx signal is timing source DSU Ill ARdc User Manual 61200270L1 1 Chapter 6 Configuring DTE O ptions DTE OPTIONS The DTE OPTIONS menu is used to select the configuration parameters that control the operation of the DSU III ARdc s DTE interface DTE Ra
62. n or until the unit is reset 61200270L1 1 DSU Ill ARdc User Manual 4 1 Chapter 4 Configuration O verview For detailed information on configuration see Chapter 5 Configuring Net work Options Chapter 6 Configuring DTE Options Chapter 7 Configur ing Test Options Chapter 8 Configuring Dial Options and Chapter 9 Manual Command A complete Configuration menu is shown in Figure 4 1 42 DSU Ill ARdc User Manual 61200270L1 1 Chapters Configuring N etwork O ptions NETWORK OPTIONS The NETWORK OPTIONS configuration parameters control the loop operation of the DSU III ARdc Once a parameter is set Command Accepted is displayed briefly before returning to the active menu Loop Rate The Loop Rate option sets the loop operating speed The unit should be set to the rate required by the DDS service The DSU III ARdc also sup ports subrate DTE data over a 56 kbps or 64 kbps loop The loop rate must be set independently of the DTE rate Eight loop rate selections are available shown in Figure 5 1 61200270L1 1 DSU Ill ARdc User Manual 5 1 Chapter 5 Configuring N etwork O ptions 5 2 1 LOOP RATE 1 NETWORK OPT 2 N ETW ORK ADDR 3 REMO TE CONFIG 4 N ETW O RK TYPE 5 CLO CK SOURCE 1 LOCAL 2 REMOTE JENTER ADDRESS 3 TEST O PTION S 4 DIALO PTIONS 5 MANUALCOMMAND Figure 5 1 Setting Loop Rate Options The default factory setting is AUTO When configured to A
63. ned to transmit and receive digital data on digital transmission facil ities digital data service DDS also called Digital Data System A private line digital service for transmitting data end to end at speeds of 2 4 4 8 9 6 and 56 kbps and in some cases 19 2 38 4 or 64 kbps The systems can use central hub offices for obtaining test access bridging legs of multi point circuits and cross connecting equipment DDS is offered on an inter LATA basis by AT amp T and on an intra LATA basis by the Bell operating companies data set ready SR A signal on the EIA 232 interface that indicates if the communication is connected and ready to start handshaking control signals so communication can begin data terminal equipment DTE In the EIA 232C standard specification the E A 232C is connected between the DCE and a DTE The main difference between the DCE and the DTE is that pins two and three are reversed dB Decibel A unit of measure of signal strength usually the relation between a transmitted signal and a standard signal source DTE to loop rate matching A feature designed into ADTRAN DSU CSU products that allows slower DTE devices to communicate over 56 64 kbps digital circuits DTR Data terminal ready A control signal sent from the DTE to the DCE that indicates the DTE is powered on and ready to communicate 61200270L1 1 DSU Ill ARdc User Manual Glossary 7 Glossary EIA 232 A set of standards specifying various electrical
64. o cable is securely con nected to the DSU CSU and wall jack Power the unitO ff and N A Verify the unit passes self test during then On power up displayed on the LCD After verifying the items listed in Table 11 2 the unit should operate properly and display the following DATA MODE LOOP IS NORMAL If a status message other than DATA MODE LOOP IS NORMAL is shown begin performing diagnostics described in the following section 61200270L1 1 DSU Ill ARdc User Manual 11 7 Chapter 11 Testing and Troubleshooting Troubleshooting New Installs or Existing Circuits If your DSU then is suspected of having problems perform a Self Testto determine the unit is in good health is receiving excessive errors requiring retrans perform a DTE with Test Pattern Test mission of data to determine if the unit s internal transmitter and receiver is operating error free continues to receive excessive errors requir perform a Remote Test to verify an error free ing retransmission of data connection between the local and remote unit Run the test using all available test pat terns If an external BERT tester is available these additional tests may be per formed e DTE amp Loop Test e DTE Only Test e Loop Only Test If the unit fails any of these tests or the problem has not been determined contact ADTRAN Technical Support see inside back cover of this manual 118 DSU Ill ARdc User
65. ote loopback 124 DSU Ill ARdc User Manual 61200270L1 1 Appendix A Table A 1 shows the AT commands available for the DSU III ARdc AT Commands Table A 1 AT Commands Command Title Default A Re execute Command none ATA Answer none ATDn Dial Number none ATE Echo Command 1 ATH Hang Up Call none ATO Go Online none ATQn Result Code Displa y 0 ATSn Read S Register none ATSn x W rite to S Register none ATVn Result Code From 1 ATZ Reset none AT amp Cn DCD Option 0 AT amp Dn DTR O ption 0 AT amp Fn Restore Factory O ptions none AT amp Kn Flow Control none AT amp Ln N etwork Type 0 AT amp Q n DTE Data Format 0 ATERN CS Options 0 ATESN SROptions 0 AT amp Tn Test Commands 0 AT amp V View Current Configuration none AT amp Xn Transmit Clock 0 61200270L1 1 DSU Ill ARdc User Manual A l Appendix A ATCommands Table A 1 AT Commands Continued Command Title Default AT amp Yn Power Up User Profile 0 AT amp Zn x Store Phone N umber none AT Bn Loop Rate Select 0 AT Kn DTE Rate Select AT P Password Control 0 AT P x Password Entry 0 T P gt x Password Verify 0 AT R Initiate Remote Config AT Tn Antistream O ption 0 AT_An LLB Control 0 AT_Cn SR Control During Test 0 AT_Dn RTS CTS Delay 0 AT_Fn Scrambler Control 0 AT_Jn Auto Answer Enable Disable 0 AT_N xx Set N etwork Ad
66. play Status menu provides the following options which are available only after a test has been initiated Exit Test Exits the current test and returns to the Main menu Display Status Re enters test display 61200270L1 1 DSU Ill ARdc User Manual 113 Chapter 11 Testing and Troubleshooting 1 DTE LO O P LL STATUS DISPLAY 1 EXIT TEST 2 DISPLAY STATUS 1 EXIT TEST 2 LOOP ONLY RT STATUS DISPLAY 2 DISPLAY STATUS 1 EXIT TEST 3 DTE ONLY STATUS DISPLAY 2 DISPLAY STATUS 1 2047 PATTERN 511 PATTERN 1 EXIT TEST STRESS PTRN 1 STATUS DISPLAY 2 DISPLAY STATUS STRESS PTRN 2 STRESS PTRN 3 STRESS PTRN 4 w IL 4 DTE W ITH TP OD i A 1 2047 PATTERN 2 511 PATTERN STRESS PTRN 1 1 EXIT TEST STRESS PTRN 2 STATUS DISPLAY 2 DISPLAY STATUS STRESS PTRN 3 STRESS PTRN 4 Ww 5 TEST PATTERN EJ Ul 1 LO CALUNIT a I 6 SELF TEST STATUS DISPLAY Ne at dim Rio PTS v gt y gt m HE z a 2 TEST P2 REM OTE UNIT PEN TER TEST UNIT ADDRESS 0 w IL STRESS PTRN 1 1 EXIT TEST STRESS PTRN 2 STATUS DISPLAY 2 DISPLAY STATUS STRESS PTRN 3 STRESS PTRN 4 saTofuls propa po iw gt gt pz o iw par m Figure 11 4 Complete Test Menu 114 DSU Ill ARdc User Manual 61200270L1 1 TROUBLESHOOTING This section is intended to provide a quick and easy means of diagnosing suspected problems associated with local or remotely attached ADTRAN DSU
67. ple a digital PBX a PC or data communica tions device A CSU performs certain line conditioning and equalization functions and responds to loopback commands sent from the central office A CSU regenerates digital signals monitors them for problems and provides a way of testing the digital circuit clocking An oscillator generated signal that provides a timing reference for a transmission link A clock provides signals used in a transmission system to control the timing of certain func tions The clock has two functions 1 to generate periodic signals for synchronization and 2 to provide a time base controller card The card installed in slot 1 of an ADTRAN SMART 16 shelf used to connect a VT 100 ter minal or DATAMATE for configuring SMART 16 DSU CSU products customer premise equipment CPE All telecommunications terminal equipment located on the customer premises including telephone sets private branch exchanges PBXs data terminals and customer owned coin operated telephones clear to send CTS also called CS A signal on the DTE interface indicating that the DCE is clear to send data Glossary 6 DSU Ill ARdc User Manual 61200270L1 1 Glossary DATAMATE An ADTRAN designed and manufactured device that provides a hand held means of configuring the SMART 16 shelf The DATAMATE plugs into the front of the controller card and provides a 2x16 LCD display and full numeric keypad data service unit DSU A device desig
68. r on page D 1 Using this option and special cable eliminates data errors caused by excessive delays in the DTE transmit clock receiver and transmit data driver CS Options The CS clear to send OPTIONS menu is used to select one of five differ ent control modes for the CS lead Figure 6 7 shows the menu path used to access the CS OPTIONS menu The default factory setting is FOLLOWS RS with CS DELAY SHORT 1 N ETW O RK OPT 1 DTE RATE 2 DTE OPTIONS 1 FO RCED ON 1 CS DELAY SHORT Figure 6 7 Selecting CS Options If one of the options chosen involves request to send RS then the delay from RS to CS must be selected Table 6 5 shows the AT Commands used to set the CS OPTIONS 68 DSU Ill ARdc User Manual 61200270L1 1 61200270L1 1 Chapter 6 Configuring DTE O ptions Table 6 5 CS Options AT Commands Front AT Description Panel Command 1 FO RCED ON amp RO CS always on 2 FO LOW S RS amp R1 CS on with RS after delay off when RS or if DSU cannot pass data 3 FO LO W S CD amp R2 CS off when CD goes off or if DSU cannot pass data 4 FO LLO W S RS CD amp R3 CS follows RS after delay and also off if CD off If CD goes off after RS is on DSU Ill ARdc will turn off CS but continue to pass data until RS goes off CS also off if DSU cannot pass data 5 0 FF W ITH LO CD amp R4 Off 5 sec after LO CD Valid only in SW 56 mode CS is forced on but will turn off for 5 seconds after a call is di
69. ress ing Enter selects the flashing item The following example and Figure 3 1 illustrate how to select the DSU IH ARdc Loop Rate option 1 Select Configuration CONFIG by pressing 3 then press Enter 2 Select LOCAL or REMOTE test by pressing the corresponding num ber then press Enter 3 Use the Up and Down Arrows to view sub menu items 4 Choose an item on the sub menu such as Network Options NET WORK OPT 5 To select NETWORK OPT press 1 then press Enter 6 To select LOOP RATE options press 1 then press Enter 7 The current network loop rate is flashing Scroll up or down to view 61200270L1 1 possible options To select a new loop rate press the corresponding number then press Enter DSU Ill ARdc User Manual 33 Chapter 3 Operation FRONT PANEL 1 LOOP RATE 2 N ETW O RK ADDR 3 REMOTE CONFIG 4 N ETW O RK TYPE 5 CLO CK SOURCE 1 LOCAL J1 NETWORK OPT 2 DTE OPTIONS 3 TEST OPTIONS 4 DIALOPTIONS 5 MANUALCOMMAND Figure 3 1 Example of Basic Menu Travel The DSU III ARdc faceplate is shown in Figure 3 2 Descriptions of each part of the front panel follow the illustration DSU III ARde gt CENTER 7 5 3 DELETE QUICK SHIFT CANCEL C Co Figure 3 2 DSU Ill ARdc Front View LCD Window Displays menu items and messages in 2 lines by 16 characters Enter Selects active menu items To activate a menu it
70. ring Phone Numbers AT Description Command amp Zn Store Phone N umber Auto Answer The AUTO ANSWER option is used to specify how incoming calls are to be answered If ENABLED incoming calls are automatically answered by the DSU III ARdc If DISABLED an incoming call can be answered man ually by an AT or V 25 command from the DTE or by raising TR from the DTE Figure 8 2 shows the menu path used to enable or disable this option 1 N ETW ORK TYPE 1 LOCAL 3 TEST O PTIONS 2 REMOTE ENTER ADDRESS 4 DIAL OPTIONS Figure 8 2 Enabling Disabling the Auto Answer Function 1 PHONE NUMBER 2 AUTO ANSWER DISA BLED Table 8 2 shows the AT Commands available for the AUTO ANSWER option Table 8 2 AT Commands for Auto Answer Front AT Description Panel Command 1 DISABLED JO Auto Answer disabled 2 EN ABLED ji Auto Answer enabled DSU Ill ARdc User Manual 61200270L1 1 Chapter 9 Manual Command MANUAL COMMAND The MANUAL COMMAND option is a shortcut method for entering configuration and control commands for the DSU III ARdc 61200270L1 1 Figure 9 1 shows the menu path for MANUAL COMMAND The avail able manual commands are listed in Table 9 1 When using the front panel perform the following steps to enter a manual command He Goo a Select 3 CONFIG from the Main menu Select 1 LOCAL Select 5 MANUAL COMMAND The first display prompts for command number en
71. rmal Normal Forced On Normal TR O ptions Ignored Ignored Ignored Idle W hen Off SR O ptions Off TesttOOS Off Test 0 OS O ff Test 0 O S O ff Test 0 OS Test Options Test Timeout O ff Off Off Off RDL En Dis RDL Accepted RDL Accepted RDL Accepted RDL Accepted EIA Controlled LLB Disable Disable Disable Disable EIA Controlled RLB Disable Disable Disable Disable Dial Options Auto Answer Enable Enable Enable Enable 61200270L1 1 DSU Ill ARdc User Manual B3 Appendix B Default Configuration Profiles B4 DSU Ill ARdc User Manual 61200270L1 1 Appendixc DSU to Modem Interconnect MODEM TAIL CIRCUIT APPLICATION A DSU to modem interconnect diagram for a modem tail circuit applica tion is shown in Figure C 1 RG e gt ETC ETC nn RC CHU RD lt gt TD TD gt RD For Multi drop requirement DCD gt RTS RTS lt DCD Figure C 1 DSU to Modem Interconnect 61200270L1 1 DSU Ill ARdc User Manual C 1 Appendix C DSU to M odem Interconnect C2 DSU Ill ARdc User Manual 61200270L1 1 Appendix D EIA 232 Connector 56 AND 64 KBPS APPLICATION The EIA 232 connector shown in Figure D 1 may be used for 56 and 64 kbps applications Using the external clock option and this cable should eliminate data errors caused by excessive delays in the DTE trans mit clock receiver and transmit data driver When creating this cable at the DTE interface EIA 2
72. s configured for SW56 operation the CRN com mand causes the DSU to dial the supplied number The command s for mat follows CRN NUMBER TO BE DIALED If no number is included in the command the number stored in dial regis ter number 1 is dialed If no number is provided and no number is stored in dial register number 1 the DSU III ARdc responds with the call failure indication CFINS Call Failure Indication Not Stored CRS Call Request Using Stored Number The CRS command causes the DSU III ARdc to dial the number stored in the specified register The format of this command is as follows CRS OPTIONAL SPACE REGISTER NUMBER 1 10 If this command is issued without the register number parameter the INVPS Invalid Parameter Syntax response is issued If this command is issued and the register parameter is not in the valid range for dialing reg isters the INVPV Invalid Parameter Value response is returned Other responses include VAL CNX and CFIxx DIC Disregard Incoming Call This command causes the V 25 bis processor to return to command mode even if there is an incoming call pending This allows local commands to be issued and incoming calls to be ignored There are no parameters asso ciated with this command The DSU responds with VAL PRN Program Number This command stores the supplied number into the specified register The command has the following format
73. sconnected For RS options select the RS to CS delay length 1 CS DELAY SHORT DO Short delay from RS to CS selected 2 CS DELAY LONG D1 Long delay from RS to CS selected Specified times for the short and long delays at the different operating speeds are shown in Table 6 6 DSU Ill ARdc User Manual 6 9 Chapter 6 Configuring DTE O ptions Table 6 6 Short and Long Delays at Different Operating Speeds Anti Stream 6 10 Short Long Rate Option Option Tolerance 64K 1 1ms 16 1ms 4ms 56K 1 1ms 16 1ms 4ms 38 4K 1 5ms 16 5ms 4ms 19 2K 1 5ms 16 5ms 4ms 9 6K 1 5ms 16 5ms 4ms 4 8K 1 9ms 16 9ms 7ms 2 4K 3 8ms 18 8ms 1 3ms The ANTI STREAM option is used to select the anti stream timeout Fig ure 6 8 shows the menu path used to access the ANTI STREAM options menu The anti stream timeout is the maximum time the DSU III ARdc transmits data to the network from the DTE This feature prevents one DTE device on a multi drop network from continuously tying up the transmit circuit back to the master DSU The anti stream timer is reset to zero when RS changes to the active state and is updated every second while RS is active When the anti stream timeout expires the DSU III ARdc stops transmitting DTE data into the network but continues to accept data from it This condition exists until the DTE deactivates the RS input DSU Ill ARdc User M
74. sessenenensnsnsnsnensnsnsnsnenennnene 11 1 TEST OVERVIEW 25300 id aaa BER nah 11 1 Inittiating a Test dit ads iaa 11 2 Test Status Displaying duen 11 2 Fxitingaleste nnen sage A eu een ie AAS EAST 11 3 Tro blesh6oting u 2 2 anna ae 11 5 Messages from the DSU ESU nen 11 5 Troubleshooting New Installs ooooocinnnnononnnonononacaranononananananonononananononononoso 11 7 Troubleshooting New Installs or Existing Circuits 0 0 0 11 8 Local Unit dia gniosties vectra 11 9 61200270L1 1 DSU Ill ARdc User Manual Table of Contents DYE amp Boop Lh sssrin bt 11 10 Test Description iria a a a bests tees sated 11 10 Test Purpose re an NT 11 11 A RR ln srl 11 11 Interpreting Test Results _ ueeessenenennenenenenenenenenenenenenenen 11 12 Loop Only AR Dia ii aaa 11 12 Test Purpose td ES let 11 12 Initiating EE N R EE Nm anelesanin ie 11 12 Interpreting Test Results nseries 11 13 DIE OMY iep nen ai sta 11 13 Test Purpose iii calco rodilla DUE 11 14 AAA ON 11 14 Interpreting Test Results _ uuenesnennennenenenenenenenenenenenenenen 11 15 DTE With Test Pattern deis 11 15 Test Purpose Lit innen Rena Hari 11 15 AAA EEEE A 11 15 Interpreting Test Results _ ueesnennnnenenenenenenenenenenenenenen 11 16 Test Rate nieces 2 22 A ns asien 11 16 Test Purpose wa seen aL a aeeai 11 17 UA ca rennen E A 11 17 Interpreting Test Results _ enneenn 11 18 Self Testno ae Te RR NN 11 18 TESEPU
75. should be incorporated in the fixed wiring NETWORK INTERFACE CONNECTION The DSU III ARdc s eight position modular jack labeled TELCO con nects to the network when the unit is configured for either dedicated or switched operation See Table 2 1 for the connector pin assignments Table 2 1 Pin Assignments for Telco Connector Pin Name Description 1 R1 Transmit Data from DSU to N etwork Ring 1 2 T1 Transmit Data from DSU to N etwork Tip 1 36 N ot Used 7 T Receive Data from N etwork to DSU Tip 8 R Receive Data from N etwork to DSU Ring DTE DATA CONNECTION PRIMARY DTE The primary DTE should be connected to either the EIA 232 DTE connec tor or the CCITT V 35 DTE connector The maximum cable lengths recom mended are 50 feet for the EIA 232 and 100 feet for the CCITT V 35 The pin assignments for the connectors are listed in Table 2 2 and Table 2 3 DSU Ill ARdc User Manual 61200270L1 1 Chapter 2 Installation The V 35 connector is recommended for use with data rates above 19 2 kbps The EIA 232 connector works up to 56 kbps with a low capac itance cable or with the external transmit clock option selected The DTE rate is configured from the front panel The DTE can operate in asynchro nous or synchronous modes To prevent possible radio frequency interference emissions a shielded cable is CAUTION required Table 2 2 Pin Assignments for Primary ElA 232 Connector Pin ElA Des
76. snnnnn 12 4 Appendix A AT Commands ssessessesseeseseesscoreesessesscoseeseesesseonceseesessroseeseesesssoseeseeses A 1 Appendix B Default Configuration Profiles esesesesesenenenenenenenenenenenenenenenenene B 1 Appendix C DSU to Modem Interconnect s essessesseseeseessessesseseessessosseoecosessessesee C 1 Appendix D EIA 232 Connector sesesesesesesenenenenenenenensnenenenenenenenenenenenenenenenenenenene D 1 Appendix E Specifications Summary sneseneenenenenenenensnenenenensnenenenenensnensnsnenensnnen E 1 61200270L1 1 DSU Ill ARdc User Manual v Table of Contents vi DSU Ill ARdc User Manual 61200270L1 1 Figure 1 1 Figure 3 1 Figure 3 2 Figure 3 3 Figure 4 1 Figure 5 1 Figure 5 2 Figure 5 3 Figure 5 4 Figure 5 5 Figure 6 1 Figure 6 2 Figure 6 3 Figure 6 4 Figure 6 5 Figure 6 6 Figure 6 7 Figure 6 8 Figure 6 9 Figure 6 10 Figure 6 11 Figure 7 1 Figure 7 2 Figure 7 3 Figure 7 4 Figure 8 1 Figure 8 2 Figure 9 1 Figure 10 1 Figure 10 2 Figure 11 1 Figure 11 2 61200270L1 1 List of Figures Sample Point to Point Application for DSU III ARdc 1 2 Example of Basic Menu Travel oconicinicionnncicnnininnnnircmoncorerorinnnoso 3 4 DSU IH ARdc Front View ccccccccccsscsssccssecesecessecsseecsecsseecnesesseeeees 3 4 DSU IH ARdc Rear View ooooccocccccconncconnnonanonnconnccnnonnnnccnnocanonnanonanonns 3 7 Complete Configuration Menu enenenene
77. sssennenen 4 3 Setting Loop Rate Options une 5 2 Setting the Network Address uuuneesnnesnnnenennennesnsnen 5 3 Enabling Disabling Remote Configuration eeneeee 5 4 Setting Network Type Options 5 5 Setting the Clock Source 5 6 DTE Rates for 56 or 64 kbps Loop Rate 6 1 DTE Rates for Loop Rates of 2 4 9 6 19 2 and 38 4 kbps 6 3 Selecting the Connector Type 6 4 Selecting Data Fora tina nn essen 6 5 Selecting DTE Command Opti0M ccococicinononicnnnaninnnaninanoncncncnnarornnoss 6 6 Transmit Clock Options een 6 7 Selecting CS OPHONS issie ae nebst 6 8 Anti Stream Opos an innen 6 11 Selecting CD Options 2u 00n een aiya s 6 12 Selecting TR Options 6 13 Setting SROPHONS miii le 6 14 Setting Test Timeout OptiOM cocccocononononnnononnraronnrnnnnnrononcnnnonononnns 7 1 Remote Digital Loopback uneeeeesessesnnenenenenenenenenenenennn 7 2 EIA Local Loopback Options cococncccccnnnnnnnnonincnnanononononinononanananononos 7 3 EIA Remote Loopback Options 7 4 Editing Stored Phone Numbers ccoccccccncconononnonononononinnanoronoconorinnnnss 8 1 Enabling Disabling the Auto Answer Function nneneee 8 2 Manual Comm anid iii idas ta 9 2 Dial Options Men e esie airada 10 1 Path to Storing Numbers Option 10 2 Normal Operation Before Initiating Loopback Test 11 1 Mitaine a Testisi siegen ini 11 2 DSU Ill ARdc User Manual List of Figures Figure 11
78. t Call Timer 50 32H 50 32H 50 32H 50 32H Escape Guard Timer 50 32H 50 32H 50 32H 50 32H Command Echo Enable Enable Enable Enable Result Code Enable Enable Enable Enable Long or Short Code Long Long Long Long Test Pattern Type 2047 2047 2047 2047 CS Delay Short Short Short Short DTR Recog Delay x2 5ms 3 3 3 3 DTR Command Timeout x1 8 8 8 8 sec Front Panel En Dis Enable Enable Enable Enable AT Password Control Disable Disable Disable Disable Network Options Loop Rate AUTO AUTO 56k AUTO N etwork Address 0 0 0 0 Remote Conf En Dis Enable Enable Enable Enable N etwork Type Dedicated Dedicated AT amp T MCI SW 56 AT amp T MCI SW 56 Clock Source From N etwork From N etwork From N etwork From N etwork DTE Options Remote DSU Address 0 0 0 0 DTE Rate 56 64k loop Same as Loop Same as Loop Same as Loop Same as Loop Scrambler Mode O FF O FF O FF O FF Connector Type V 35 EIA232 EIA232 V 35 DTE Data Format SYNC SYNC ASYNC SYNC B 2 DSU Ill ARdc User Manual 61200270L1 1 Table B 1 Default Configuration Profiles Continued Appendix B Default Configuration Profiles Profile Numbers 00 1 01 2 02 3 03 4 DTE Command O ptions DIS DIS DIS DIS Transmit Clock Normal Normal Normal N ormal CS Options Follow RS Follow RS Forced On Follow RS Anti stream Timer Timer O ff Timer O ff Timer O ff Timer O ff CD Options No
79. tablishing communications with another DSU The front panel of the local DSU can then be used to configure the remote DSU During remote configuration the DSU III ARdc prompts for the remote address before continuing to the Configuration CONFIG menus The Configuration menu consists of a group of five sub menus relating to a specific interface or function of the DSU III ARdc that requires setup 1 N etwork O pt N etwork Interface Parameters 2 DTE O ptions DTE Interface Parameters 3 Test O ptions Unit Test O ptions 4 Dial O ptions Unit Dialing O ptions 5 M anualCommand ADTRAN Specific Commands The DSU IH ARde contains four different user profiles sets of configura tions options that are stored in read only memory see Appendix B Default Configuration Profiles on page B 1 The unit is shipped from the factory with profile number 1 default configuration loaded into the cur rent nonvolatile configuration memory If profile 1 matches require ments for the system then no additional configuration is required to put the unit into service If profile 1 does not match system requirements it can be modified or one of the other profiles that more closely matches the system requirements can be loaded into current memory When a differ ent profile is loaded or the existing profile is modified it is stored in the current nonvolatile configuration memory The DSU IH ARdc is then configured with that profile every time power is turned o
80. te The selectable DTE rates over a 56 or 64 kbps loop are shown in Figure 6 1 If a slower loop rate is selected then the DTE rate will either match the loop rate or it can be set to 1 2K see Figure 6 2 The factory default set ting is SAME AS LOOP 1 2 4K 1 N ETW ORK OPT 7 7 8K 39 6K 1 DTE RATE 4 19 2K 5 38 4K 6 56K 57 6K For 64kbps Loop T SAMEASIOOP P1 SCRAMBLER O FF R CONNECTORTYPE MB T 2K 2 5CRAMBLER ON 1 LOCAL S DATA FORMAT 3 5UPPRESS IBE 2 DTE OPTIONS 4 DTE CMD OPTION 3 CONFIG 5 TRAN SM IT CLO CK 2 REMOTE ENTER ADDRESS 6 CS OPTIONS 7 AN TI STREA M 8 CD OPTIONS 9 TR OPTIONS 3 TEST OPTIONS A SR OPTIONS 4 DIALO PTIO N S 5 MANUALCOMMAND Figure 6 1 DTE Rates for 56 or 64 kbps Loop Rate The equivalent AT commands for setting the DTE rate for a 56 kbps loop rate are shown in Table 6 1 61200270L1 1 DSU Ill ARdc User Manual 6 1 Chapter 6 Configuring DTE O ptions Table 6 1 DTE Rate AT Commands Front AT Description Panel Command 1 DTE 2 4K K3 DTE rate 2 4K sync and async 2 DTE 4 8K K4 DTE rate 4 8K sync and async 3 DTE 9 6K K5 DTE rate 9 6K sync and async 4 DTE 19 2K K6 DTE rate 19 2K sync and async 5 DTE 38 4K K7 DTE rate 38 4K sync and async 6 DTE 56K 57 6K K8 DTE rate 56K sync or 57 6K async 7 SAME AS LOOP K9 DTE rate same as loop speed If the DSU II ARdc is set for a loop rate of 64 kbps and SAME AS LOOP is selected then SCRAMBLER ON OFF options are available
81. time 2 NORMAL amp cl On only when data present on loop 3 0 FF WITH LOCD amp C2 On except after disconnect in Switched 56 application 6 12 DSU Ill ARdc User Manual 61200270L1 1 Chapter 6 Configuring DTE O ptions TR Options The TR OPTIONS menu is used to select the DSU III ARdc response to the data terminal ready TR lead The factory default setting is IGNORED see Figure 6 10 1 N ETW O RK OPT 4 DTE CMD OPTION 5 TRAN SMIT CLOCK 6 CS OPTIONS 7 AN TI STREAM 8 CD OPTIONS 2 DTE OPTIONS 1 LOCAL 2 REMOTE JENTER ADDRESS 1 IGNORED 2 IDLE W HEN OFF 3 0FF gt 0N DIAL 1 4 0 FF gt ON DIAL 2 A SR OPTIONS 3 TEST OPTIONS 5 MANUALCOMMAND Figure 6 10 Selecting TR Options Table 6 9 shows the equivalent AT commands for setting TR OPTIONS Table 6 9 TR Options AT Commands Front AT Description Panel Command 1 IG NO RED amp DO Ignore the TR input 2 IDLE W HEN OFF amp D2 See the following N ote 3 0 FF gt ON DIAL 1 amp D3 Dial Stored 1 TR goes off to on SW 56 only 4 0 FF gt ON DIAL 2 amp D4 Dial Stored 2 TR goes off to on SW 56 only 61200270L1 1 DSU Ill ARdc User Manual 6 13 Chapter 6 Configuring DTE O ptions For IDLE WHEN OFF option In SW56 mode TR off causes the DSU to go On Hook Idle The unit also does not dial out if TR is off In dedicated mode the NOTE DSU goes into DTE command mode when T
82. tlined in Figure 11 12 to initiate a DTE Test using a Test Pattern 61200270L1 1 DSU Ill ARdc User Manual 11 15 Chapter 11 Testing and Troubleshooting 1 2047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 1 DTE LO O P LL 2 L00P ONLY RT 4 DTE WITH TP 5 TEST PATTERN 6 SELF TEST 1 LOCAL UNIT 2 REMOTE UN IT Figure 11 12 Initiating a DTE Test with Test Pattern Interpreting Test Results If the unit is functioning properly the DSU III ARdc displays DTE WITH TP TST ERR XX The first line of the display indicates the type of test being performed while the second line of the display indicates the number of errors accu mulated by the test pattern detector If errors occur during this test the test error count can be reset to zero by pressing 1 To verify proper operation of this test single bit errors can be injected into the transmitted test pattern by pressing 2 These errors appear on the TEST ERR display Test Pattern The Test Pattern option converts the local DSU III ARdc into a BERT tester for the purpose of testing the DDS circuit When this test is used the remote DSU CSU must be in loopback or transmitting a test pattern Fig ure 11 13 illustrates the data paths for this mode 11 16 DSU Ill ARdc User Manual 61200270L1 1 Chapter 11 Testing and Troubleshooting LOCAL REMOTE DSU CSU DSU CSU Error Test Pattern Test Pattern
83. try COMMAND 00 Use the Up Arrow key to delete the current entry then use the num ber keys to enter the new value Press Shift to activate letters A F Press Enter to complete the command entry Once the command number is entered the display shows both the command number and the present value or setting for the command The command value can be edited or reissued with the existing value COMMAND XX VALUE 00 Use the number keys to enter the hexadecimal value Press Enter to complete The system briefly displays Command Accepted if the entry is valid and returns to the active menu DSU Ill ARdc User Manual 9 1 Chapter 9 Manual Command 1 N ETW ORK OPT TEST OPTIONS 4 DIAL O PTIO N S 2 REMOTE ENTER ADDRESS COMMAND 00 5 MANUAL COMMAND COMMAND 00 Figure 9 1 Manual Commands Table 9 1 Manual Commands Command Description Command Value AT Command Echo Disable 82 00 Enable 82 01 AT Result code Enable 85 00 Disable 85 01 AT Long or Short code Short form 86 00 to FF Long form 86 00 to FF AT Escape Character 2 00 to FF AT CR Character 3 00 to FF AT LF Character 4 00 to FF AT BS Character 5 00 to FF AT Escape Char Timer OC 00 to FF Abort Call Timer 7 00 to FF DTR Recognize Delay x 2 5ms 19 00 to FF DTR Initiated Command Timeout 28 00 to FF seconds Load Factory Opt O ption Set 1 8A 00 O
84. umber 8 1 AT commands 8 2 pin assignments line 1 connector 2 2 primary EIA 232 connector 2 3 primary V 35 connector 2 3 2 4 point to point operation B 1 power connection 3 7 power switch 3 7 power up 2 1 primary V 35 3 7 Q quick 3 5 R rate adapting 12 3 rear panel 3 6 receipt inspection 2 1 receive data 3 6 remote command 2 10 remote configuration AT commands 5 4 5 5 enable disable 5 3 remote loopback 11 1 12 4 request to send 3 6 return material authorization RMA 1 3 S scrambler on off 6 2 AT commands 6 2 factory default 6 2 self test 11 18 shift 3 5 61200270L1 1 DSU III ARdc User M anual Index status 3 1 synchronous operation 11 1 T telco jack 3 6 test 3 2 DTE only 11 13 self 11 18 test pattern 11 16 test commands 11 9 test from telco 12 3 12 4 test mode manual 3 6 test options 4 1 configuration 7 1 test pattern 11 16 test timeout 7 1 AT commands 7 2 transmit clock 6 7 D 1 AT command 6 7 transmit data 3 6 troubleshooting new installs 11 7 U unit dialing options 4 1 unit test options 4 1 up arrow 3 3 3 6 user profiles 4 1 V V 25 bis commands 2 6 11 1 asynchronous option 2 7 bi sync option 2 7 SDLC option 2 6 V 35 connector 2 3 VALA 2 8 Ww warranty 1 3 Index 3 Index Index 4 DSU Ill ARdc User Manual 6120027011 1 Product Support Information Pre Sales Inquiries and Applications Support Please contact your local distributor ADTRAN Applications Engineering
85. wo lines at a time of the current opera tional status of the network and the DTE interfaces After 30 seconds of no front panel operation the DSU III ARdc automati cally reverts to the status display Examples of possible status displays are shown in Figure 12 1 LOOPIS NORMAL Screen 2 LO OP 56K DTE 56K SYNC TR SR LUB RIB ON ON OFF OFF DSU O perational Status DDS N etwork Status N etwork Rate DTE Rate Mode DTE Control Leads Screen 3 Control Lead Status AA AA AA Figure 12 1 Examples of Status Displays 61200270L1 1 DSU Ill ARdc User Manual 12 1 Chapter 12 Status Selection DSU Operational Status Possible messages include DATA MODE The unit is ready to pass data if network status is normal UNIT IN TEST The unit is in test Scroll to next status menu for test type DTE COMMAND MODE The unit is in command mode from the DTE AT or V 25 bis In SW56 mode the following messages are possible IDLE The unit is idle waiting for a call or a dial command INCOMING CALL The unit has detected an incoming call DIALING The unit is dialing a number DDS Network Status 122 This line of the display shows the current status of the dedicated network interface Possible messages include LOOP IS NORMAL The DSU is connected to the dedicated line No line irregularity detected DSU Ill ARdc User Manual 61200270L1 1 61200270L1 1 Chapter 12 Status Selection OPEN LOOP The DDS ph
86. ysical connection has been broken NO RX SIGNAL The DSU IH ARdc detects sealing current but no receive signal CHECK TELCO LINE The DSU III ARdc detects a possible reversal in the Rx and Tx pairs OOS OOF FROM NET The DSU III ARdc detects an abnormal condition code from the network NO FRAME SYNC The DSU III ARdc cannot sync on the signal from the telco 64k mode only TEST FROM TELCO The DSU III ARdc is in a test initiated from the telco Scroll to next status menu for test type RATE ADAPTING The DSU III ARdc is attempting to determine the loop rate provided from the telco In SW56 mode the following messages are possible ANSWERING CALL The DSU III ARdc is answering an incoming call NO WINK FROM CO The DSU III ARdc did not see a proper signal from the network during dialing DSU Ill ARdc User Manual 123 Chapter 12 Status Selection CALL DISCONNECT The SW56 connection was terminated Network Rate The message displayed on this line of the Status display screen indicates the rate of the service configured for the network DTE Rate Mode The message displayed on this line of the Status display screen indicates the DTE data rate and format DTE Control Leads and Status Four additional DTE interface leads are displayed with their current sta tus on or off displayed below them The leads are identified as follows TR Data terminal ready SR Data set ready LLB Local loopback RLB Rem

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