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1. Alarm Queue menu is used to view alarm queue Under Alarm menu Alarm Queue use left or right key to select Alarm Queue menu Path LOOP T Alarm Alarm Alarm Queue Press ENTER from Alarm Queue menu Alarm History Alarm Clear Alarm Setup 48 Chapter 5 Front Panel Operation 1 LOS LINE 08 28 46 01 01 97 Alarm Queue menu shows the alarm queue of last 10 alarms To view any one of the ten alarm queue use left or right arrow key cycle through and the alarm status is shown on In the above example LOS LINE first part shows alarm type is LOS Lost Of Signal second part shows where the alarm occurs is LINE port It also shows time and date when the alarm took place 5 3 2 Alarm History Menu Alarm History menu is used to view alarm history Under Alarm menu Alarm Queue use left or right key to select Alarm History menu Path LOOP T Alarm Alarm Alarm History Press ENTER from Alarm History menu Alarm Setup Alarm History Alarm Clear Alarm History MAST CLK OK 0 Alarm History menu shows the alarm history of various type of alarm as shown in Table 3 5 To view alarm history use left or right arrow key to cycle through and the alarm history is shown In the above example the first part MAST CLK which indicates master clock loss the second part OK shows the current status and the last part O is the total error count 5 3 3 Alarm Clear Menu Alarm Clear menu is used to clear alarm queue
2. HW a Va a EP WAVAVAS LOOP T FT1 CSU DSU MODEL 2500 MODEL 500 Stand Alone USER S MANUAL LOOP TELECOMMUNICATION INTERNATIONAL INC 8F NO 8 HSIN ANN RD SCIENCE BASED INDUSTRIAL PARK HSINCHU TAIWAN Tel 866 3 578 7696 Fax 866 3 578 7695 2002 Loop Telecommunication International Inc All rights reserved Loop T is a trade mark of Loop Telecommunication International Inc Hayes is a trade mark of Hayes Microsystems P N 51 FT100L 500 09 2002 Version 1 3 TABLE OF CONTENTS ii iii FIGURES Fi i i i i i i iv FCC Requirements Part 15 This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at the user s own expense FCC Requirements Part 68 This equipment complies with Part 68 of the FCC rules On the bottom cover of this equipment is a label that contains among other information the F
3. key to reset error counter and ESC key to terminate QRSS test User may also read performance report to understand type of error occurs 4 3 Near End Loopback The near end loopbacks such as local loopback line loopback payload loopback DTE port loopback are activated by the local Loop T T1 The loopbacks are at the near end facility The following paragraph describes each loopback in detail NOTE Deactivate the near end loopbacks from the front panel or the terminal depending on where it was activated 4 3 1 Local Loopback Local loopback is illustrated in FIGURE 4 1 The outgoing signal is looped back through the T1 PCM transceiver All 24 DSO channels are looped back to the receiver path This loopback test is activated by the Test command This loopback test can be used with the QRSS diagnostic test pattern to validate the local Loop T T1 CSU DSU s integrity An AIS Alarm Indication Signal is sent to the network during the local loopback test The local loopback test can be activated from the front panel and terminal 27 Chapter 4 Maintenance DTE port mui Multiplexer e g V 35 D Local loopback Line loopback LLB 8 Payload loopback PLB DTE port TO LINE loopback DTE port TO DTE loopback Line Driver Line port T1 Line Receiver D S 1 r a m e r Figure 4 1 Loopback Block Diagram 4 3 2 Line Loopback Line loopback is illustrated in Figure 4 1 The incoming T1 line
4. Trap IP E55 255 255 255 Trap IP Address menu shows the current destination IP address of Loop T used to send an SNMP trap The default Trap IP address is broadcast address 255 255 255 255 To change Trap IP address use left or right arrow key to cycle through to the position and press ENTER key to cycle through the number This operation must be concluded by moving left or right arrow key to OK position and press ENTER to enable the changes NOTE My IP and Trap IP menu only available when SNMP feature is purchased 5 1 8 Date Menu Date menu is used to reset new RTC date Under Configuration menu use left or right key to select Date menu Path LOOP T Configuration Configuration Date Press ENTER from Configuration Date menu 0 0 Line DTE 1 Master Clock Save Config Data Restore Config 0 01 97 Console Port To change date use left or right arrow key to move to the digital position and press ENTER key to cycle through the number This operation must be concluded by moving left or right arrow key to OK 7 position and press ENTER to enable the changes Time 5 1 9 Time Menu 050 Time menu is used to set new system time Under Configuration menu use left or right key to select Time menu Line Path LOOP T Configuration Configuration Time Press ENTER from Configuration Time menu DTE 1 Master Clock Save Config Data Restore Config 1B 23 02 Des Consol
5. amp RESET Log Off SETUP and Clear Alarms CLEAR amp RESET menu Clear ESF Error Count Log On SETUP and Clear Performance Data CLEAR amp RESET menu System Reset Zzd4uum sis pm gt gt Enter Command 2 6 1 One Hour Performance Report To show 1 hour performance report enter 1 A prompt asking for the type of report is shown at the bottom of the screen Four choices are available gt gt Select Register Type USER LINE FAR END lt gt ENTER Use cursor keys to select a desired type of report and Enter key to view the report as follows l Hour Performance Report 15 35 08 02 13 97 USER ESF 051 Valid Seconds in Current 15 Min Interval 236 seconds ES UAS BES SES CSS LOFC Current 15 Min Interval 0 236 1st Nearest 15 Min Interval 0 0 2nd Nearest 15 Min Interval 0 0 3rd Nearest 15 Min Interval 0 0 4th Nearest 15 Min Interval 0 0 Valid 15 Min Intervals in Current 24 Hour Interval ES UAS BES SES CSS LOFC Current 24 Hour Interval 0 0 0 0 0 0 lt lt Press ESC Key to Return to Main Menu gt gt Second line of the screen shows the type of the performance register set frame format type line code type and line type of current report 6 2 Twenty Four Hour Performance Report To show the 24 hour performance report enters 2 A prompt asking for the type of report and performance data is shown at the bottom of the screen
6. shown gt gt Enter Password 2 Only after a valid password is entered the full menu is shown otherwise user is asked to enter the correct password again gt gt Invalid Input of Password Try Again y n 6 13 Loopback Test Menu To enter the loopback test menu enter L To initiate the loop back test select the desired options and enter Enter key to start The loop back tests can be performed simultaneously on the T1 line and DTE ports At the bottom of the screen information about the loop back test is shown Loopback Test Menu 25 35 55 02 13 97 RROW KEYS CURSOR MOVE ENTER SELECT EAR END LOOPBACK OFF LOCAL PLB TEl LOOPBACK TO DTE TO LINE E LOOPBACK ACTIVATE CODE TO FAR END IN BAND AT amp T P ANSI P ANSI L LOOPBACK DEACTIVATE CODE TO FAR END IN BAND amp ANSI P ANSI L CHANNEL LOOPBACK ACTIVATE CODE TO FAR END ALL CHANNEL LOOPBACK DEACTIVATE CODE TO FAR END ALL DTE1 V54 LOOPBACK ACTIVATE CODE TO FAR END DTEl V54 LOOPBACK DEACTIVATE CODE TO FAR END 1 ORSS OFF FULL DTEl IDLE TEST PATTERN OFF 3 IN 24 1 IN 8 2 IN 8 1 1 Status lt lt Press ESC Key to Return to Main Menu gt gt To initiate the QRSS test choose the test port s and press ENTER When QRSS pattern synchronization is acquired a bit error counter an erred second counter and an elapsed second counter are displayed on the terminal Press the ri
7. 2 in 8 Pattern This framed 2 in 8 pattern in conjunction with the 1 in 8 Pattern is useful when performing tests to reveal the presence of equivalent mis optioned for B8ZS Use of 2 in 8 pattern will confirm the circuit s ability to support error free transmission when B8ZS substitution do not occur A framed 1 in 8 will contain 8 consecutive zeros around a zero frame bit causing a B8ZS substitution Framed 2 in 8 pattern sequence is as follows 01000010 01000010 01 Left to Right F indicates frame bit 4 5 4 1 1 Pattern This framed 1 1 pattern tests AMI circuits It will cause false yellow alarm in D4 frame format mode Framed 1 1 pattern sequence is as follows 10101010 10101010 10 Left to Right F indicates frame bit Lu Chapter 4 Maintenance 4 6 Verifying Loop T Operations The purpose of this section is not to help the user determine where a possible fault in the network may lie For this the user needs to know the exact geometry of the network Then standard network trouble shooting procedures should be followed which involve sectionalizing the network and performing loopback tests on pieces of the network The purpose here is to help the user determine whether the Loop T equipment is at fault after tests have pointed a suspicious finger at this equipment The procedures outlined here depend on test equipment and other equipment the user may have on hand The organization of these procedures start fr
8. Chapter 3 Operation 3 6 3 Requesting Report In both T1 D4 and ESF frame format mode the performance report can be accessed from local terminal directly or from remote terminal via modem Also in ESF mode performance report can be accessed via data link User will choose either AT amp T or ANSI T1 403 data link operation in DS1 network line interface configuration AT amp T TR 54016 should be referred to as how the performance report request message and response message are structured ANSI T1 403 should be referred to how the one second performance report message structured Loop T FT1 supports both AT amp T TR 54016 and ANSI T1 403 performance report message 3 7 LED Operation The front panel has 10 LEDs for operation and error indications Table 3 8 lists each LED and its color and indications Table 3 7 Front Panel LED Table LED Coo Indication power il ER Green Powered on and operational ET Power off self test failure or during initialization SYNC TEST Off T1 line frame not in sync Green T1 line frame in sync Flashing Green A line side test is in progress E LOF Off Normal Red Loss of Frame Sync LOFS or Loss of Signal LOS e E T1 line has bipolar violation YEL AIS Off Normal Amber Receive yellow alarm from T1 line Flashing Amber Receive AIS from T1 line T Flashing Green DTE in test E TD Flickering Green Transmit data present RD Flickering Green Receive data pre
9. Number 9895 Connector Pin Number 1 Note On the RJ11 side Pin 6 and Pin 2 DCD are connected On the 09 side Pin 1 DCD Pin 4 DTR and Pin 6 DSR are tied Pin 7 RTS and Pin 8 CTS are tied NOTE Pin 4 RTS and Pin 5 CTS of DB25 are connected Network connection is supported by RJ48C connector The line interface is labeled with LINE Connector pin definition is listed in Table 2 4 Chapter 2 Installation Table 2 4 RJ48CC Line Connector a Umsimed 6 Unassigned 7 SwedGmwd e Shield Ground The DTE port is configured as a DCE device There are 6 different DTE boards V 35 M34 V 35 DB25 EIA530 DB25 X 21 DB15 RS232 DB25 and RS449 DB37 Pin definitions are defined in the following tables Chapter 2 Installation Table 2 5 V 35 M34 DTE Port Pin Definition A J B JjSigalGrud D boe E ____ DCE F ____ DataCarrierDetect DCE PH Ready DTE Unassigned Unassigned L Localoopak TE Unassigned jRemoteloopbak DTE __ _6_ Transmit Data R ReceiveData DCE S TansmiDataHetun DTE O T ReceveDataReum DCE PU ExemaCok DIE V ReceiveClock CE W Clock Return _ DTE Xi Receive Clock Return DCE Y mammiCok ______ Unassi
10. T1 network line toward remote DTE Activate code 11110111 rotate left in 10 Hz for 5 0 5 sec Deactivate code 11011011 rotate left in 10 Hz for 5 t 0 5 sec 2 ESF and ESF amp T1 408 facility data link remote channel loopback code A proprietary protocol in ESF facility data link is used to enable and disable remote DTE port to perform TO LINE loopback This loopback provides an unique way to isolate problems of a specific data path from T1 network line toward remote DTE port 2290 Chapter 4 Maintenance Remote channel loopback command uses ESF data link message The ESF data link message to activate request and response are in Table 4 4 and Table 4 5 and the data link message to deactivate request and response are listed in Table 4 6 and Table 4 7 Table 4 4 Remote Channel Loopback Activate Request Message Octet No Command 0 to 255 Originate Unit Add A or Z or B or Y Target Unit Add A or Z or Bor Y 4 Requesty 5 28 0 0 0 23 0 1 DTE activate loopback Table 4 5 Remote Channel Loopback Activate Response Message 4 Target Unit Add A or Z or B or Y Current Status FUOOOOLO NOTE 1 if UorL 1 U 1 if an unavailable signal state exists L 1 if the PLB is activated 0 reserved Table 4 6 Remote Channel Loopback Deactivate Request Message 3 Target UnitAdd Agi Boi ______ or B or Y 4 j Reqesst 11 249 3322 5 28 DS0
11. Use cursor keys to select a desired type of report and Enter key to view the report as follows 54 Chapter 6 Terminal Operations 24 Hour Performance Report 15 35 13 02 13 97 USER ES ESF AMI DS1 Valid Seconds in Current 15 Min Interval 241 seconds ES UAS BES SES CSS LOFC Current 15 Min Interval 0 241 0 0 0 1 Valid 15 Min Intervals in Current 24 Hour Interval 0 ES UAS BES SES CSS LOFC Current 24 Hour Interval 0 0 0 0 0 0 USER ES Last 96 15 Min Interval 01 08 09 16 17 24 25 32 33 40 41 48 49 56 57 64 65 72 73 80 81 88 89 96 V VV VV VV DOO E TS OO a E FS GI LX LG TOS DIS dda G CO X OOO OO gt o GO T XL EL DOU DOO lt lt Press ESC Key to Return to Main Menu gt gt Second line of the screen shows the type of the performance register set performance register frame format type line code type and line type of current report 6 3 Line Availability Report To show the line availability report enter A The information based on user performance register set includes the valid seconds available seconds unavailable seconds and line availability Line Availability during Last 24 Hour I5 35 19 02 13 97 Valid Seconds 247 seconds Available Seconds 0 seconds Unavailable S
12. a BERT each of the ports of the Loop T can be tested individually The user must configure the BERT in the exact way the Loop T is configured This is easily done by comparing each of the options one by one After checking that the configuration matches if any one of the ports fails then Loop T has failed 99 Chapter 5 Front Panel Operation 5 FRONT PANEL OPERATION The front panel operation utilizes a two by sixteen 2 X 16 characters LCD display window and four keypads each labeled with ESC ENTER left arrow and right arrow gt as shown in Figure 5 1 ENTER key is used to move down the menu tree or to enable a selection LEFT and RIGHT arrow keys show other menu item in the same level ESC key returns the operation to an upper layer menu up to the main menu NOTE The ENTER key must be used to confirm a change Where YES is shown at the lower right corner it must be selected to enable a change B EIE CONSOLE P Loop T CSU DSU POWER LNE _ E O O LG U OO OO 0 SYNC TEST LOF YEL AIS TEST TD RD RTS CLK LOSS Figure 5 1 Loop T FT1 CSU DSU Front Panel Each display only shows one menu item The main menu is shown in Figure 5 2 It is the first menu displayed after power up LOOP T Configuration Figure 5 2 LCD Main Menu The first tier menu includes Configuration Diagnostics Alarm Performances and Miscellaneous Each sub menu is further broken
13. coding ANSI L for remote line loopback ANSI FDL coding 5 2 4 RemDTE Loopback Menu RemDTE Loopback is used to control remote DTE channel Near Loopback loopback test Under Diagnostics menu use left or right key to select RemDTE Loopback menu DTE Loopback Remote Loopback RemDTE Loopback RemV54 Loopback Testing Pattern Lii Path LOOP T Diagnostics Diagnostics RemDte Loopback Press ENTER from Diagnostics RemoteDTE Loopback menu Remote Loopback ACTIVATE ALL To activate or deactivate remote DTE channel loopback use left or right arrow key to cycle through to a proper DTE port and press ENTER This RemDTE loopback test uses a proprietary message If the remote facility responds to this command a LOOPED message will be shown on the LCD display Otherwise a NOLOOP message will be shown 5 2 5 RemV54 Loopback Loop T FT1 CSU DSU also supports V 54 Loopback protocol See ITU V 54 standards for details Refer to ANSI T1 403 1995 Annex B 47 Chapter 5 Front Panel Operation 5 2 6 Testing Pattern Menu Near Loopback Testing Pattern menu is used to perform QRSS diagnostics or select a variety of test pattern Under Diagnostics menu use left or right key DTE 1 Loopback Diagnostics Testing Pattern to select Testing Pattern menu Path LOOP T Diagnostics Press ENTER from Diagnostics Testing Pattern menu RemV54 Loopback Remote Loopback RemDTE Loopback Testing Pattern Testing Pattern TES
14. dedicated terminal server is needed Before SNMP is enabled make sure the IP address for Loop T FT1 CSU DSU is configured correctly and the communication parameters match the Terminal server port Once the SNMP agent is activated user can verify whether the Loop T FT1 CSU DSU is running successfully by using ping command to check if Loop T FT1 CSU DSU is responding or not e g ping 192 1 100 45 25 Chapter 3 Operation 192 1 100 45 is alive Please refer to each respective SNMP manager operation instruction to incorporate the Loop T enterprise MIB to the system Telnet capability comes with embedded SNMP agent Once SNMP agent is running user can use telnet program that is simulated a VT 100 to access Loop T FT1 CSU DSU command screen The most popular Telnet utility in the public domain is provided by NCSA It can maintains several telnet connections simultaneously It is recommended to set the CONSOLE port running at the highest speed to reduce the jittery output on terminal The Loop T FT1 CSU DSU can run reliably at 38 4K bps 2265 Chapter 4 Maintenance 4 MAINTENANCE 4 1 Self Test At system power up a complete self test routine is run to check all I O ports read write memory and data paths to validate system integrity During the system self test SELF TEST message is shown on the upper line of the LCD display The software release version and date code is shown on the lower line of the LCD display If an error is
15. display DTE Then press ENTER The default DTE parameters are shown The actual settings are shown for each parameter which can be selected by arrow keys To change the settings use ENTER key to select the parameter use arrow key to select the new setting and then press ENTER again If ESC is pressed before ENTER the setting will not be changed 3 1 3 4 Map Setup To review or change MAP settings use arrow keys to display DS0 MAP Then press ENTER The current active map is indicated To review or change MAP1 settings use arrow keys to move cursor to Then press ENTER The current active map is indicated To change the settings use ENTER key to select use arrow key to select the DSO channel number new assignment and then press ENTER again Then select IDLE DTE etc for the new channel assignment Press ENTER If ESC is pressed before ENTER the setting will not be changed 16 Chapter 3 Operation 3 1 4 Using Terminal To use the RS232 interface to configure the unit connect a VT100 terminal to the RS232 connector using a null modem cable The VT100 terminal can be a PC running a VT100 emulator software The unit is configured as a DTE Thus a null modem is needed for direct connection to a VT100 Upon connection press ENTER and ESC alternately to bring the main menu into view Press O Log On to see the full menu Press S System Setup to review or change the configuration 3 1 4 1 Review
16. down into sub level menus Subsequent chapters give detailed information regarding these menus To change selection use left and right arrow key to a proper selection and then press the ENTER key NOTE The current selected items are highlighted by an 5 1 Configuration Menu Configuration group includes 050 Line DTE Master Clock Configuration Save Config Restore Config Console Port Date and Time Menu 5 Diagnostics LOOP T Configuration Performance Miscellaneous 34 Chapter 5 Front Panel Operation 5 1 1 DS0 Map Menu 0 0 menus are used to configure 050 channel assignment for DTE port It is also used to program MAP1 and MAP2 schedule as well as to enable SWITCH function 050 channel assignment can be sent to the remote end by SEND command Under configuration DTE 1 menu use left or right key to select 050 menu 5 1 1 1 Active Map Menu 050 Line Master Clock Save Config Restore Config Console Port Time Console Pon Path LOOP T Configuration 0 0 Configuration 0 0 Active change the MAP simply use left or right arrow key cycle through to a proper or SWITCH and press ENTER While the SWITCH is selected the current active map is shown inside the bracket Active Map SWITCH lt MAP1 gt This switch menu uses proprietary ESF data link message and is only available in ESF or ESF amp T1 403 frame format mode Othe
17. found FAIL is shown in the upper right corner of the LCD display and a dedicated error message is shown on the lower line Users may press ESC left arrow lt right arrow gt and ENTER key in this order to read a specific error code If no error is found the LCD display will show PASS in the upper right corner of the LCD display followed by a Main Menu as FIGURE 5 2 Various system diagnostic methodology can be found in the following paragraphs 4 2 Diagnostics A 20 bit register QRSS Quasi Random Signal Sequence patterns is used in Loop T FT1 CSU DSU The QRSS test pattern is used to test local Loop T FT1 CSU DSU system integrity by local loopback test It can also be used to measure the T1 line quality The diagnostics scenario is as follows 1 First send a remote loopback command to cause the remote facility to loopback DSO channels 2 Then activate the local QRSS diagnostics operation use Test command to enable QRSS and choose tested 050 channel in a bundle of DTE all 24 channels or only idle channels 3 The FULL QRSS diagnostic uses a framed pattern This is useful for testing full T1 loopbacks at the far end When the QRSS pattern sync is found a bit error counter tracks total bit errors It is advised to send QRSS for more than 15 minutes interval to evaluate the quality of loop condition and facility reliability In both front panel and terminal operation user may utilize gt key to inject single error
18. lost the system will automatically switch to the 2nd clock source This is to provide an alternative clock source when the primary clock source is lost The current active clock source is shown by the LCD MCLK command and terminal S and C commands NOTE If a 2nd clock source is not available the user MUST set the 2nd clock source and master clock source to the same value If the 2nd clock source is lost as well Loop T FT1 will automatically switch to the internal clock source Loop T FT1 will automatically switch back to the 2nd clock source when it returns When the master clock source returns the CSU DSU may or may not return to the master clock source depending on the master clock source If the master clock source is LINE or DTE the CSU DSU returns to the master clock source one minute after the master clock is recovered If the master clock source is any other source the CSU DSU does not return to the master clock but instead remains with the 2nd clock Source or free runs at its internal clock rate if the 2nd clock source is not present In order to switch back to 2q s Chapter 3 Operation the master clock source the clock must be reselected as the master clock source via the front panel MCLK command or the terminal S command 3 2 3 Console Port The console port allows the user either to use a local VT 100 terminal via null modem connection or use a remote VT 100 terminal via modem for system configuration diagno
19. menu Chapter 5 Front Panel Operation Line Inband ON Inband menu shows the remote inband loopback diagnostics code recognition To enable or disable use left and right arrow key to cycle through to ON or OFF and press ENTER 5 1 2 6 Address Menu Path LOOP T Configuration Line Configuration Line Address Line Address Press ENTER from Line Address menu CSU Address menu shows the current Loop T address in FDL is CSU or TE when ESF frame format mode is selected To change use left and right arrow key to cycle through to a proper selection and press ENTER 5 1 2 7 Idle Menu Path LOOP T Configuration Line Configuration Line Idle Code Press ENTER from Line Idle Code menu Line Idle Code Oxff4 OK Idle menu shows the transmission idle code when DSO channel is in idle mode To change idle code press ENTER key to cycle through the idle code This operation must be concluded by moving left or right arrow key to OK position and press ENTER to enable the changes NOTE Due to one s density requirement it is advised that idle code to be set as FFH Also user must program idle code to contain at least two bits of 1 The factory default idle code is FFH 5 1 3 DTE 1 Menu 0 0 Note in what follows the notation DTE 1 will be used for the DTE port Li This is for compatibility with Loop products where more than one DTE ne ti ided port is provide DTE 1 DTE menu is used to configure DTE port operation
20. 4016 Requirements for interfacing digital terminal equipment to services employing the extended superframe format e AT amp T TR 54019 International ACCUNET digital services description and network interface specifications e AT amp T TR 54019A Addendum to TR54019 e AT amp T TR 62411 ACCUNET T1 5 service description and interface specification e ANSI T1 403 1989 Carrier to customer installation DS1 metallic interface e ITU T V 35 ISO 2593 EIA RS449 ISO 4902 Chapter 1 Product Description 1 PRODUCT DESCRIPTION 1 1 Description Loop T FT1 is a family of intelligent Fractional T1 Channel Service Unit and Data Service Unit CSU DSU products as shown in Table 1 1 This product family provides DS 1 network interface DSO channel multiplexing and direct connections to data and video DTE Data Terminal Equipment This manual applies only to the Stand Alone model Table 1 1 Loop T FT1 CSU DSU Product Family Su TN TNT O 35 DB25 2500 5 Stand Alone EIA530 DB25 500 S Old Model No X 21 DB15 RS232 DB25 RS449 DB37 2500 R Rack M 500 R Old Model No ack Mount Same as above Loop T FT1 CSU DSU can be configured via a front panel interface local terminal RS 232 control or through the use of a Simplified Network Management Protocol SNMP management 1 2 Applications The Loop T FT1 CSU DSU application example is illustrated in FIGURE 1 1 Via DACS Digital Access Cross Conn
21. CC registration number and ringer equivalence number REN is not used for this digital equipment If requested this information must be provided to the telephone company Loop T FT1 CSU DSU registration number and REN is as follows FCC 68 Registration Number 2PUTAI 30893 DE N REN 0 0B FACILITY INTERFACE CODE FOR DIGITAL SERVICES CODE DESCRIPTION 04DU9 BN 1 544 Mbps Superframe Format SF without line power 04DU9 DN 1 544 Mbps SF and B8ZS without line power 04DU9 1KN 1 544 Mbps ANSI ESF without line power 04DU9 1SN 1 544 Mbps ANSI ESF and B8ZS without line power SERVICE ORDER CODES FOR DIGITAL SERVICES CODE DESCRIPTION Does not provide billing and encoded analog protection Uses either an integrated or external CSU Affidavit to telco is required Loop T FT1 CSU DSU connect to the network using a RJ48CC connector If this equipment cause harm to telephone network the telephone company will notify you in advance that temporary discontinuance of service may be required If advance notice isn t practical the telephone company will notify the customer as soon as possible Also you will be advised of your right to file a compliant with the FCC if you believe it is necessary The telephone company may make changes in it s facilities equipment operations or procedures that could affect the operation of the equipment If this happens the telephone company will provide advance notice in order for you to make th
22. CTIVE To change the DTE RTS operation mode to ACTIVE or PERMANENT use left and right arrow key to cycle through to a proper selection and press ENTER 5 1 3 6 TTM Menu Path LOOP T Configuration DTE 1 Configuration DTE 1 TTM Press ENTER from DTE 1 TTM menu DTE 1 TTM OFF To change the DTE terminal timing mode use left and right arrow key to cycle through to a proper selection and press ENTER 5 1 3 7 V54 Menu Path LOOP E Configuration DTE 1 Configuration DTE 1 V54 Press ENTER from DTE 1 V54 menu DTE 1 RV54 OFF To change the V 54 protocol type use left and right arrow key to cycle through to a proper selection and press ENTER 5 1 3 8 RL Menu Path LOOP E Configuration DTE 1 Configuration DTE 1 RL Press ENTER from DTE 1 RL menu DTE 1 RL OFF To enable or disable the RL remote loopback use left and right arrow key to cycle through to a proper selection and press ENTER 5 1 3 9 LL Menu Path LOOP E Configuration DTE 1 Configuration DTE 1 LL Press ENTER from DTE 1 LL menu 40 Chapter 5 Front Panel Operation DTE 1 LL OFF To enable or disable the LL local loopback use left and right arrow key to cycle through to a proper selection and press ENTER 5 1 4 Master Clock Menu Master clock menus are used to configure the master clock source and clock rate Under Configuration menu use left or right key to Line select Master Clock menu 5 1 4 4 Master Clock Menu no
23. DS23 0 no action 1 DTE activate loopback Table 4 7 Remote Channel Loopback Deactivate Response Message A or Z or B or Y NOTE 1 if U or L 1 U 1 if an unavailable signal state exists L 1 if the PLB is activated 0 reserved 30 Chapter 4 Maintenance 4 4 4 V 54 Loopback Loop T FT1 CSU DSU also supports V 54 loopback protocol See ITU V 54 standards for details Refer to ANSI T1 403 1995 Annex B 4 5 Test Pattern Four test patterns are available to determine faults such as deficient clock recovery fault ALBO level recovery inadequate jitter margin presence of bridge taps and mis optioned network interface These four patterns are framed pattern with proper D4 of ESF frame pattern as described in the following paragraph 4 5 1 3 in 24 Pattern This framed 3 in 24 pattern is aligned with the frame bit so as not to transmit a false yellow alarm It tests the consecutive zeros requirement and useful to test AMI circuits Framed 3 in 24 pattern sequence is as follows F 01000100 00000000 00000100 01000 Left to Right F indicates frame bit 4 5 2 1 in 8 Pattern This framed 1 in 8 pattern tests the ability of a circuit to support a pattern having the minimum ones density It is useful to reveal a timing recovery problem The bit set to one must be set to bit 2 to avoid false yellow alarm Framed 1 in 8 pattern sequence is as follows 01000000 01000000 0100 Left to Right 4 5 3
24. LI DIS DIS ES LINE DIS DIS UAS LI DIS DIS CSS LI DIS DIS DTEl A DIS DIS p p prd pd lt lt Press ESC Key to Return to Main Menu gt gt 6 15 Password Setup Menu To change the password setup enter P A prompt asking for action is shown Password Setup 15 36 12 02 13 97 Password DISABLE ENABLE CHANGE lt gt ENTER To enable the password select ENABLE The previous entered password is used The password itself is not case sensitive If you want to select your own password select CHANGE A prompt asking the original password and new password are shown Enter CURRENT Password Enter NEW Password Re Enter NEW Password 6 16 Retrieve Last Stored Configuration In case configuration changes cause unexpected problems enter R to restore the user stored configuration The system will prompt the following message Enter Y to retrieve and N to quit gt gt Retrieve Last Stored Configuration Y N 60 Chapter 6 Terminal Operations 6 17 System Setup Menu Enter S to show and configure the Loop T A prompt asking for the type of system setup menu at the bottom of the screen gt gt Select Type LOCAL FAR END gt ENTER Cursor keys are used to select the field to be changed As the cursor moves from field to field the second line on the screen shows the available input for the field After making all the changes enter Esc key and answer yes to take
25. MAL ACTIVE PERMANENT PERMANENT ON OFF 3 5 7 V 54 Remote channel loopback can be activated and deactivate by V 54 loopback protocol User can select ITU V 54 or ANSI T1 403 3 5 7 RL If RL Remote Loopback is set to ON and received remote loopback signal from DTE the remote unit performs DTE port TO LINE Loopback by activating V 54 protocol 3 5 8 LL If LL Local Loopback is set to ON and received local loopback signal from DTE the local unit performs DTE port TO DTE Loopback 3 6 Alarm and Reports 3 6 1 Alarms Loop T FT1 has many types of alarm as listed in Table 3 4 Also Loop T FT1 has alarm queue which record the latest 40 alarms with time stamp Loop T FT1 also has alarm history and alarm status registers which is used to track the alarm count Each alarm can be individually enabled or disabled When disabled no action is taken When enabled alarm counter increments on the occurrence of the specific type of alarm When alarm occurs or the counter threshold exceeds alarm is triggered When alarm is triggered a dial out is activated if it is enabled Otherwise no action is takes and only the specific alarm count is incremented Dial out is to dial out through modem to a remote terminal When threshold level is implemented it is based on the 15 minutes alarm count register All alarms are disabled by default The dial out is also disabled by default Hayes compatible AT dialing commands are recommended for both prim
26. TE loopback test Under Diagnostics menu use left or right key to select DTE Loopback menu Near Loopback Path LOOP T Diagnostics Diagnostics DTE 1 Loopback Press ENTER from Diagnostics DTE 1 Loopback menu DTE 1 Loopback Remote Loopback RemDTE Loopback DTE 1 Loopback RemV54 Loopback OFF Testing Pattern To select DTE loopback type use left or right arrow key to cycle through to a desired selection and press ENTER TO DTE to loop the DTE incoming data back to DTE TO LINE to loop the outgoing data back to the incoming direction Select OFF to end the loopback test 46 Chapter 5 Front Panel Operation 5 2 3 Remote Loopback Menu Remote Loopback is used to activate T1 line remote loopback test Near Loopback There are three remote loopback types such as inband AT amp T 54016 and ANSI T1 403 Under Diagnostics menu use left or right key to DTE 1 Loopback select Remote Loopback menu Diagnostics Remote Loopback Remote Loopback Loopback RemDTE Loopback Path LOOP T Diagnostics Press ENTER from Diagnostics Remote Loopback menu RemV54 Loopback Testing Pattern Remote Loopback ACTIVATE INBAND To activate or deactivate remote T1 line loopback use left or right arrow key cycle through to a desired selection and press ENTER INBAND for remote line loopback inband coding AT amp T P for remote payload loopback AT amp T FDL coding ANSI P for remote payload loopback ANSI FDL
27. TE port with 56KxN bps all 24 channels are available for DSO multiplexing configuration NOTE For 051 network interface with AMI coding and DTE port with 64KxN bps only alternate odd or even DSO channels should be used This is required to guarantee one s density requirement 3 4 DS1 Network Line Configuration A detailed option list of T1 line configuration is in Table 3 2 The following paragraph will describe each item 3 4 4 Frame Format Mode This equipment can be used in T1 D4 and ESF frame format DS1 network interface In ESF frame format mode user can choose either AT amp T or ANSI facility data link protocol ESF amp T1 403 chooses ANSI ESF data link protocol and one second performance report will be sent to the network every second automatically Also ANSI and AT amp T data link message is acceptable in ANSI ESF frame format mode However AT amp T ESF frame format mode only accept AT amp T ESF data link protocol 3 4 2 Line Code Mode This equipment can be used in AMI Alternate Mark Inverting and B8ZS Bipolar 8 Zero Substitution line code format 3 4 3 Line Build Out The T1 line long haul transmit LBO can be programmed to either 0 dB 7 5 dB or 15 dB relative to DSX 1 3 4 4 Yellow Alarm The Loop T FT1 transmits a yellow alarm when LOS Loss of Signal is detected AIS Alarm Indication Signal is detected or OOF Out of Frame is detected for 2 5 0 5 seconds Users can disable this feature via the
28. TING OFF Use left or right arrow key cycle through to a desired test pattern and press ENTER QRSS is used to perform QRSS Quasi Random Signal Sequence test QRSS test channel is selected by a bundle of designated DTE IDLE or FULL all 24 DSO channels When QRSS is activated the LCD display shows the results of pattern synchronization test DTE channel and errors count If QRSS pattern is received QRSS SYNC is shown on the LCD display Else QRSS UNSYNC is shown and bit error count is displayed which counts all single error User may use gt key to inject single bit error key to reset error counter and ESC key to quit QRSS test ORSS FULL BIT ERROR 0 In above example QRSS test status shows the result of the test continuously with the test channel FULL pattern synchronization SYNC the bit error count BIT ERROR 0 The test pattern is used to transmit on all 24 channels to the T1 line Four test patterns such as 3 IN 24 1 IN 8 2 IN 8 and 1 1 are available To terminate pattern transmit press ESC key TRANSMITTING 3 IN 24 PATTERN 5 3 Alarm Menu Alarm group includes Alarm Queue Alarm History Alarm Clear and Alarm Setup Alarm menu is used to view alarm queue and alarm history to clear alarm queue alarm history and alarm relay as well as setup alarm threshold etc as in the following paragraph Configuration Diagnostics LOOP T Alarm Performance Miscellaneous 5 3 1 Alarm Queue Menu
29. and history Under Alarm Queue Alarm menu use left or right key to select Alarm Clear menu Path LOOP T Alarm Alarm Alarm Clear Press ENTER from Alarm Clear menu Alarm Setup Alarm History Alarm Clear Alarm Clear Confirm At this menu press ENTER to confirm clear alarm queue and history Otherwise press ESC to exit without any action 5 3 4 Alarm Setup Menu Alarm Setup menu is used to set up the threshold level of each alarm type as listed in Table 3 5 and enable alarm relay and auto dial out Alarm Queue function Some type of alarm does not have threshold level Under Alarm menu use left or right key to select Alarm Setup menu Alarm History 5 341 Alarm Menu Alarm Clear Path LOOP T Alarm Alarm Setup Alarm Alarm Setup Alarm Alarm Setup 49 Chapter 5 Front Panel Operation To set up each alarm type as listed in Table 3 5 is similar Use left and right arrow key to cycle through to select a particular alarm type For example to set up T1 Line Yellow Alarm Path LOOP T Alarm Alarm Setup Alarm Alarm Alarm Setup Alarm YEL LINE and press ENTER YEL LINE Alarm DISABLE To enable or disable alarm error count use left and right arrow key to cycle through to a desired selection and press ENTER 5 3 4 2 Dial Out Menu Path LOOP T Alarm Alarm Setup Alarm Alarm Setup Dial Out To set up each alarm dial out type as listed in Table 3 5 is similar Use left and right arrow key to
30. ary and secondary dial out strings The Loop T FT1 will send the following AT commands to initialize the modem when the modem interface type is selected Users may add specific command in the dialing string to suit their environment Auto answer S0 1 lgnore DTR signal amp DO Track carrier amp C1 Echo off EO Display result codes in verbose form V1 Return result code QO Wait time for carrier 30 sec 87 30 Save amp WO amp 0 1 2 3 4 5 6 7 8 221 Chapter 3 Operation Inactivity timeout can be programmed by S command After alarm message is sent Loop T FT1 waits for specific number of inactivity timeout second and then disconnect modem If a new alarm is sent during that period the timeout counter is reset Inactivity timeout of 0 second will immediate disconnect modem after alarm message is sent Individual fault counts are updated every second Bipolar Violation BPV counts are updated every second but the BPV alarm is based on an average Bit Error Rate BER that is calculated over a 15 minute interval Therefore BPV alarm status is updated every 15 minutes after the average BER is calculated If the average BPV rate exceeds the preset threshold i e from 10 up to 10 an alarm can be declared assuming BPV alarm is enabled ES and UAS employ threshold triggered alarms but these alarms are declared as soon as the recorded account exceeds the preset threshold The 15 minute int
31. assigned E ____ Data TerminalReady DTE ______ Remote Loopback sedi 238 Unassigned 12 Chapter 2 Installation Table 2 10 RS449 DB37 DTE Port Pin Definition 1 CabeSheld 2 Unassigned 98 Unassigned i Hane Clock Resa e 8 ReceveCock 9 Cleartosed DCE Data Terminal Ready 15 Unassigned 16 Unassigned 19 20 unassigned E OE 28 Unassigned ___32 ___ Unassigned 33 Unassigned 34 Unassigned 836 Unassigned 37 Unassigned 1 mie Chapter 2 Installation 2 3 Configuration Setting 2 3 1 Hardware Configuration Setting All configurations are software programmable No DIP switches are available Users should not need to open the case for modifications 2 3 2 Software Configuration Setting There are three system configurations Factory default Current working User stored Factory default configurations are not changeable Each Loop T FT1 CSU DSU is shipped with all three configurations set to the factory default configuration The current working configuration can be changed at any time The system automatically stores the current working configuration into nonvolatile memory When the system is turned off and then turned back on again the previous working configuration is retrieved as the current working configuration The current working con
32. cycle through to select a particular dial out type For example to setup T1 Line Loss of Frame dial out type Path LOOP T Alarm Alarm Setup Dial Out Alarm Alarm Setup Dial Out LOF LINE and press ENTER LOF LINE Dial Out DISABLE To enable or disable dial out function when alarm occurs or error count exceed threshold level use left and right arrow key cycle through to a desired selection and press ENTER 5 3 4 3 Threshold Menu Path LOOP T Alarm Alarm Setup Alarm Alarm Setup Threshold To setup ES UAS CS and BPV is similar For example to setup T1 Line Bipolar Violation threshold level Path LOOP T Alarm Alarm Setup Threshold Alarm Alarm Setup Threshold BPV LINE and press ENTER BPV LINE 10 5 9 50 Chapter 5 Front Panel Operation To change threshold level of BPV or ES UAS CSS use left or right arrow key to cycle through to the digit position and press ENTER key to cycle through the number This operation must be concluded by moving left or right arrow key to OK position and press ENTER to enable the changes The number inside the parenthesis 5 9 indicates the threshold level of error rate only can change from 10 to 109 5 4 Performance Menu Performance group includes Line Status Line Performance and Configuration Reset Performance Diagnostics LOOP T Performance Performance Miscellaneous 5 4 1 Line Status Menu Line Status menu
33. disable yellow alarm command 3 4 5 Inband Signaling In T1 D4 framing format and ESF both ESF and ESF T1 403 an inband loopback code recognition is used to activate remote loopback operation 3 4 6 Address In T1 ESF framing format TABS operation requires an address of either CSU Channel Service Unit or TE Terminal Equipment identification 19 Chapter 3 Operation 3 4 7 Idle Code Any 050 channel which is not assigned to a DTE port is an idle channel An idle code is transmitted on idle 050 channels Users may program the idle channel to any bit pattern from 00H to FFH NOTE Due to ones density requirement it is advised that idle code to be set as FFH Or user must program idle code to contain at least two bits of 1 The factory default idle code is FFH Table 3 2 T1 Line Default Setting 3 5 DTE Configuration This product is equipped with one DTE port A detailed option list of DTE configuration is in Table 3 3 and the following paragraph will describe each item 3 5 1 Rate DTE port can operate at 56KxN or 64KxN bps N is 1 to 24 Use Rate command to select 56K or 64K Use DSO MAP command to select number of DSO channels that the DTE port is going to occupy 3 5 2 Clock Polarity Clock polarity of DTE port is either normal or inverted and is used to drive the transmit data and to sample the receive data 3 5 3 Data Polarity Data polarity of DTE port is either normal or inverted which i
34. e 2 of 2 Main Menu Loop T Diagnostics Master Clock Primary Clock Master Clock Secondary Clock Shows Curr Clk 0 0 Active 0 0 0 0 Switch Time 0 0 0 0 1 0 0 2 Loop T Alarm Alarm Alarm Alarm Alarm Diagnostics Near Loopback Diagnostics DTE 1 Loopback Diagnostics Remote Loopback Diagnostics RemDTE Diagnostics RemV54 Diagnostics Testing Pattern gt gt 2 E 3 3 I o 5 2 lt o 2 gt D D 3 3 5 65 Performance Performance Line Status Performance Reset Performance Performance Line Performance Alarm Setup Alarm Alarm Setup Dial Out Alarm Setup Threshold Loop T Miscellaneous Shows Line Status Reset Performance m UAS BES SES CSS LOFC BPV Chapter 9 Appendix C 9 APPENDIX C Glossary of Abbreviations A Q AIS Alarm Indication Signal QRSS Quasi Random Signal Sequence AMI Alternate Mark Inverting ANSI American National Standards Institute B R 8825 Bipolar 8 Zero Substitution RTC Real Time Clock RTS Request to Send c S CSU Channel Service Unit SNMP Simplified Network Management CTS Clear to Send Protocol T D TE Terminal Equipment D amp I Drop and Insert TTM Terminal Timing Mode DACS Digital Access Cross Connect System DSR Data Set Ready DSU Data Service Un
35. e conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier Any repairs or alternations made by the user to this equipment or equipment malfunctions may give the telecommunications company cause to request the user to disconnect the equipment User 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 Caution User should not attempt to make such connections themselves but should contact the appropriate electric inspection authority or 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 Number of all the devices does not exceed 100 ix CSA 22 2 Requirements The Loop T FT1 CSU DSU including this equipment is ETL certified and is in compliance with CSA std 22 2 No 225 The ETL control number for Loop T FT1 CSU DSU is 75425 Standard Lists Loop T FT1 is designed to meet the following standards e AT amp T TR 5
36. e necessary modifications in order to maintain uninterrupted service vi Normally this equipment will be used in conjunction with FCC registered equipment that limits the Encoded Analog Content and provides the required Billing Protection If the connected equipment is not of this type an affidavit must be supplied to the telephone company where the network connection is to be made The affidavit is to be notarized and is to be filed at least ten days before the initial connection An affidavit which the customer is required to fill out is included at the end of this practice If trouble is experienced with this equipment please contact Loop Telecommunication America Service Facility for repair and warranty information If the trouble is causing harm to the telephone network the telephone company may request you remove the equipment from the network until the problem is resolved All repairs should be handled by authorized Loop Telecommunication Service Personnel Service can be facilitated through our office at Loop Telecommunication International 8 Carrick Road Palm Beach Gardens FL 33418 U S A Tel 561 627 7947 Fax 561 627 6615 This equipment cannot be used on telephone company provided coin service Connection to Party Line Service is subject to state tariffs vii Safety Requirements CAUTION e Never install telephone wiring during a lightning storm e Never install telephone jacks in wet locations u
37. e Port To change time use left or right arrow key to move to the digital position and press ENTER key to cycle through the number This operation must be concluded by moving left or right arrow key to OK position and press ENTER to enable the changes Time 45 Chapter 5 Front Panel Operation 5 2 Diagnostics Menu Diagnostics group includes Near Loopback DTE Loopback Remote Loopback RemoteDTE Loopback Testing Pattern Menu a remote Configuration loopback is in session the front panel RLB LED is flashing green 5 Diagnostics LOOP T Diagnostics Performance Miscellaneous 5 2 1 Near Loopback Menu Near Loopback menus are used to control near end T1 line side loopback operation such as local loopback test payload loopback test and line loopback test Under Diagnostics menu use left or right key to select Near Loopback menu DTE 1 Loopback Path LOOP T Diagnostics Press ENTER from Diagnostics Near Loopback menu N e e ere Se RemV54 Loopback Near Loopback OFF Near Loopback Diagnostics bli Remote Loopback Near Loopback RemDTE Loopback Testing Pattern To select a loopback type use left or right arrow key to cycle through to a desired selection and press ENTER LOCAL to start local loopback test PLB to start payload loopback test and LLB to start line loopback test Select OFF to end the loopback test 5 2 2 DTE 1 Loopback Menu DTE Loopback is used to perform D
38. econds 247 seconds Line Availability 0 0 lt lt Press ESC Key to Return to Main Menu gt gt 6 4 System Setup Report To show the system configuration report enter C A prompt asking for the type of report at the bottom of the Screen gt gt Select Type LOCAL STORED FAR END lt gt ENTER Use cursor keys to select a desired type of report and Enter key to view the report as follows 99 Chapter 6 Terminal Operations Loop T System Setup 15 35 24 02 15 97 LOCAL DSO MAP ACTIVE MAP SWITCH TIME MAP1 00 00 12 00 MAP2 12 00 00 00 LINE FRAME ESF CODE AMI LBO 0 0 YEL ON INBAND ON ADDR CSU IDLE FF RATE lt MAP1 gt lt 2 gt CLOCK DATA INTERFACE RTS TTM DTEl 64K OK NORMAL NORMAL 35 MAST CLOCK LINE 2nd CLOCK LINE CURRENT 2nd CLOCK RS 232 PORT BAUD 9600 DATA 8 STOP 1 PAR NONE XON XOFF OFF INTERF TERMINAL DIAL OUT SETUP PRIMARY DIALSTRING ATDT START TIME 08 00 STOP TIME 07 59 SECONDARY DIALSTRING ATDT START TIME 08 00 STOP TIME 07 59 INACTIVITY TIMEOUT 0 MINUTES DEVICE NAME LOOP T 01 IP ADDRESS 000 000 000 000 COMMUNITY NAME public TRAP IP ADDRESS 255 255 255 255 lt lt Press ESC Key to Return to Main Menu gt gt 6 5 System Description Report To show the system description report enter D A prompt asking for the type of system description report at the bottom of the screen The report shows the detail informa
39. ect System the Loop T interfaces various applications such as LAN Local Area Network to WAN Wide Area Network communications Host to workstation communications video conferencing and data communication The user can apply integrate different data applications into a single communication link and utilizing only part of the available bandwidth Furthermore this allows the user to expand bandwidth up to 24 DSO channels on demand without additional physical links because they are already available Data and video applications may include equipment such as video conferencing bridge router gateway workstation host computer and various high speed data terminal equipment FIGURE 1 2 to FIGURE 1 4 illustrates some of these applications Chapter 1 Product Description Fractional T1 Network amp Services Digital Cross Connect Digital Cross Connect Video Conference Bridge Router Digital Cross Connect Video Conference CAD CAM CAD CAM Public switched Telephone Network Loop T Network Management Front End Processor Figure 1 1 Application Illustration 1 Bridge Router Bridge Router Figure 1 2 Application Illustration 2 25 4 Chapter 1 Product Description Bridge Bridge Router Router Figure 1 3 Application Illustration 3 HOST COMPUTER CLUSTER CONTROLLER Figure 1 4 Application Illust
40. egration interval does not apply to ES and UAS alarms Alarm register states are reset every 15 minutes but preserved in the Alarm History display Table 3 4 Alarm Type Table MAST CLK LOSS Master Clock Loss no e UAS LINE T1 Line Unavailable Second 0 to 900 es default 1 CSS LINE T1 Line Control Slip Second 0 to 900 yes default 1 DTE1 ALARM DTE1 RTS loss or clock loss in TTM o ES LINE T1 Line Error Second 0 to 900 yes default 1 i 3 6 2 Report Loop T FT1 has three sets of performance registers These are line user and far end The line performance register tracks the line receiver performance status The user performance register tracks the line receiver as well but user may clear at any time The far end performance register tracks the far end Loop T receiver status The performance parameters are listed in Table 3 6 While user performance register have two additional parameters One is BPV register to count bipolar violation in both D4 and ESF modes The other is ESF to track framing error and CRC error in ESF frame format mode only Each performance parameter has ninety six sets of registers to record 24 hours history in 15 minute interval 22 Chapter 3 Operation Table 3 5 Performance Parameter List Performance Description Definition T1 D4 Definition ESF Parameter ES Error Second BPV gt 1 OOF 1 or CS gt 1 CRC6 ERROR gt 1 OOF gt 1 or CS 21 BES Bursty Error Sec
41. end operation is accessible Loop T FT1 CSU DSU V1 14 Main Menu 15 35 01 02 15 97 DISPLAY SETUP l Hour Perf Report 24 Hour Perf Report Line Availability Loop T System Setup Loop T Description ESF Error Count Alarm History Loop T Status Alarm Queue CLEAR amp RESET Log Off SETUP and CLEAR amp RESET menu Log On SETUP and CLEAR amp RESET menu gt gt Enter command 2 If the terminal screen is illegible press Enter key and Esc key alternatively to bring out the main menu If all efforts fail check if the right cable is used and if the console port parameter setting is matched with the terminal using the front panel Console command The main menu consists of four groups of commands Display Access Setup and Clear amp Reset Initially only Display and Access commands are available To enable Setup and Clear commands user has to log on using O command Chapter 6 Terminal Operations Loop T FT1 CSU DSU V1 14 Main Menu 10 51 45 02 15 97 DISPLAY SETUP 1 l Hour Perf Report V 54 Setup 2 24 Hour Perf Report Loopback Test A Line Availability Alarm Setup Loop T System Setup Password Setup D Loop T Description Retrieve Last Stored Configuration E ESF Error Count System Setup H Alarm History Change Date and Time I Loop T Status Store Current Configuration Q Alarm Queue Send Active DS0 MAP to Far end gt Synchronize Far end System Time ACCESS CLEAR
42. erface 5 1 7 6 Interface Menu Path LOOP T Configuration Configuration Console Port Press ENTER from Console Port Interface menu Interface TERMINAL To change the console port interface type to TERMINAL MODEM or SNMP SLIP use left and right arrow key to cycle through to a desired selection and press ENTER In modem mode a modem initialization routine is run to establish the connection The initialization routine must be run each time the modem is installed SNMP SLIP item is only available when SNMP feature is purchased This is an optional feature When SNMP SLIP is selected communication port must connect to a Terminal Server for operation NOTE For optimum operation T2500 amp async server should be set to 9600 Console Port My IP 5 1 7 7 My IP Address Menu SNMP Option Path LOOP T Configuration Configuration Console Port Press ENTER from Console Port My IP menu My IP 92 209 200 010 My Address menu shows the current IP address of Loop T To change IP address use left right arrow key to select the position and press ENTER key to cycle through the number This operation must be concluded by moving left or right arrow key to OK position and press ENTER to enable the changes 5 1 7 8 Trap IP Menu SNMP Option Path LOOP T Configuration Configuration Console Port Press ENTER from Console Port Trap IP menu Console Port Trap IP 44 Chapter 5 Front Panel Operation
43. figuration may also be saved into nonvolatile memory as a user stored configuration The user stored configuration may be retrieved at any time Retrieving the user stored configuration overwrites the current working configuration The user can view the stored configuration in the System Setup Report C before retrieving it The following steps can be used to restore the factory default configuration 1 Press the ESC key during power up 2 Press ENTER while SELF TEST is being displayed on the front panel 3 Verify that LOAD DEFAULT CONFIGURATION is being displayed on the front panel to indicate that the operation was successful 14 Chapter 2 Installation Table 2 11 Default Software Configuration Line Code Mode MAP2 12 00 00 00 15 Chapter 3 Operation 3 OPERATION This chapter describes the Loop T FT1 CSU DSU configuration options and operational functions User should refer to CHAPTER 5 FRONT PANEL OPERATION and CHAPTER 6 TERMINAL OPERATION for detailed operational procedures 3 1 Quick Start for Loop T FT1 CSU DSU After installation the user may want to familiarize with the equipment immediately The following abbreviated instructions will give the user a quick start 3 1 1 Power On Turn power on by attaching power cable at the rear of the unit and then push ON OFF switch On the LCD unit will first display SELF TEST followed by the main menu 3 1 2 Retur
44. ght arrow key to inject an error the left arrow key to reset the counters or the ESC key to terminate the QRSS test In order for the QRSS BERT to work a far end loopback compatible with the type of QRSS pattern selected or other means of returning the transmitted pattern back to the Line port receiver must be active This restriction does not apply to the other test pattern diagnostics 59 Chapter 6 Terminal Operations Status 0855 SYNC CHANNEL FULL BIT ERR 65535 ERROR SECONDS 20 ELAPSED SECONDS 139027 To transmit test pattern continuously choose one of the 4 patterns and press Enter key to start the test Enter Esc key to stop the test Status Transmitting 3 in 24 test pattern 6 14 Alarm Setup Menu To enter the alarm setup menu enter M A prompt asking for the type of alarm setup menu at the bottom of the screen gt gt Select Type LOCAL FAR END gt ENTER For each type of alarm three choices of setup are available ALM is to set whether this alarm register counter to be enable or disable while DIAL and RELAY is to activate or deactivate the alarm reporting function When alarm exceed threshold DIAL is to dial out from the console port and RELAY is to engage the alarm relay Local Alarm Setup 15 36 06 02 13 97 ARROW KEYS CURSOR MOVE TAB ROLL UP TYPE THRESHOLD ALM DIAL AST C LOSS DIS DIS EL LI DIS DIS IS LI DIS DIS OS LI DIS DIS OF LI DIS DIS PV
45. gned Unassigned CC jUmssgned oo J Do Unassigned EE Unassigned FF Unassigned HH Unassigned JJ Unassigned KK Unassigned l Unassigned MM Unassigned oo sd i U lt lt Chapter 2 Installation Table 2 6 V 35 DB25 DTE Port Pin Definition 6 ____ DCE 7 SigalGrud 8 DataCamerDetect DCE 9 ReceiveClockReium_____ DCE to Unassigned 13 Unassigned 19 Unassigned Umssged 2 unassigned Chapter 2 Installation Table 2 7 EIA530 DB25 DTE Port Pin Definition 1 Cable Shield 6 DataSetHeady DCE ____7 SignalGround 0 0 00 OE 8 ____ DCE 9 Receive Clock Return DCE Remote Loopback DTE DCE DTE DTE 10 Chapter 2 Installation Table 2 8 X 21 DB15 DTE Port Pin Definition 1 CableShield o y a 8 SignalGround J o TansmtDataReum oE OB Perum PS Unassigned Chapter 2 Installation Table 2 9 RS232 DB25 DTE Port Pin Definition ___ CabeSheld Clear To Send ale 7 SigalGrud 8 DataCarrierDetect DCE 9 Unassigned J y to Unassigned ____ ______ Unassigned ________________ Unassigned asi p14 Unassigned ___ I 16 Unassigned 19 Un
46. ion 2 2 1 Mechanical Installation CONSOLE m ui SYNC TEST LOF YEL AIS TEST TD RD RTS CLK LOSS Figure 2 1 Loop T FT1 CSU DSU Front Panel View LINE Figure 2 2 Loop T CSU DSU Rear Panel Three versions shown Loop T FT1 CSU DSU is a desk top unit Loop T FT1 CSU DSU desk top unit is stackable The front panel is shown in Figure 2 1 and the rear panel is shown in Figure 2 2 Chapter 2 Installation 2 2 2 Electrical Installation Loop T FT1 CSU DSU Stand Alone version is AC powered Use the far right power connector to connect to an AC power outlet Console port can be connected via RJ11 interface For this interface the Loop T FT1 CSU DSU is configured as a DTE using the supplied conversion cable A modem or a null modem is used to connect to a VT 100 terminal Pin definition and pin connection are listed in the following tables Table 2 1 RJ11 Console Port Data Carrier Detect Transmi Data 5 Signal Ground 6 Data Terminal Ready DTE Table 2 2 RJ11 to DB25P Male Conversion Cable RJ11 Connector Pin Number DB25 Connector Pin Number 1 E Note The following pins on the DB25P should be paired connected together Pin 4 RTS to Pin 5 CTS Table 2 3 RJ11 to DB9S Female Conversion Cable RJ11 Connector Pin
47. ion must be concluded by moving left or right arrow key to OK position and press ENTER to enable the changes Switch Time 2 00 12 00 5 1 1 4 Path LOOP T Configuration 0 0 Configuration 0 0 Send Map Under Send Map menu and press ENTER to Send Map Confirm At this menu press ENTER will send the current working 050 map information to the far end It will overwrite the current far end working 050 map Otherwise press ESC to exit without any action This Send Map menu uses proprietary ESF data link message and is only available in ESF or ESF amp T1 403 frame format mode Otherwise error message display If far end facility acknowledges this command an ACK is shown on the LCD display Otherwise a FAIL message is shown on the LCD display 5 1 2 Line Menu 0 0 Line menus are used to configure T1 line operation mode such frame format line code Line Build Out LBO yellow alarm transmission Line when LOF and LOS inband loopback code recognition FDL address code and transmission idle code Under configuration menu use left or DTE 1 right key to select Line menu Master Clock aster Cloc 5 1 2 1 Frame Format Menu Save Config Restore Config Console Port Time Path LOOP T Configuration Line Configuration Line Frame Press ENTER from Line Frame menu Chapter 5 Front Panel Operation Line Frame D4 To change the frame type use left and
48. is used to view Loop T T1 line receiver error status report Under Performance menu use left or right key to select Line Status menu Path LOOP T Performance Performance Line Status LINE LOS LOF RED Press ENTER from Line Status menu YEL AIS Line Status Line Performance Reset Performance if MN This menu shows the current error status of line receiver by an In the above example line receiver is receiving YEL 5 4 2 Line Performance Menu Line Performance menu is used to view Loop T T1 line receiver Line Status performance status report Under Performance menu use left or right key to select Line Performance menu Line Performance Path LOOP T Performance Performance Line Performance Press ENTER from Line Performance menu Reset Performance Line Performance ES 2 Line Performance menu shows the line receiver user register of various type of performance status as shown in Table 3 6 To view line receiver performance status use left or right arrow key to cycle through In the above example the first part ES which indicates Errored Seconds the second part 2 is two ES Chapter 5 Front Panel Operation 5 4 3 Reset Performance Menu Reset Performance menu is used to clear Loop T T1 line receiver user register performance status report Under Performance Line Status menu use left or right key to select Reset Performance menu Path LOOP T Performance Performance Reset Perf
49. it WANWide Area Network DTE Data Terminal Equipment DTR Data Terminal Ready E ESF Extended Super Frame L LAN Local Area Network LBO Line Build Out LLB Line Loopback LOFS Loss of Frame Sync LOS Loss of Signal N NI Network Interface OOF Out of Frame P PBX Private Branch Exchanges PLB Payload Loopback PLL Phase Lock Loop 66 Chapter 10 Appendix D 10 APPENDIX D AFFIDAVIT FOR CONNECTION OF CUSTOMER PREMISES EQUIPMENT TO 1 544 MBPS AND OR SUBRATE DIGITAL SERVICES For the work to be performed in the certified territory of Telco s Name State of Country of l of Name Authorized Repressentative Customer Name Customer s Address Telephone Number being duly sworn state have responsibility for the operation and maintenance of the terminal equipment to be connected to 1 544 Mbps and or subrate digital service The terminal equipment to be connected complies with Part 68 of the FCC rules except for the encoded analog content and billing protection specifications With respect to encoded analog content and billing protection attest that all operations associated with the establishment maintenance and adjustment of the digital CPE with respect to the analog content and encoded billing information continually complies with Part 68 of the FCC Rules and Regulations The digital CPE does not transmit digital signals containing encoded analog content or billing information
50. left and right arrow key to cycle through to a desired selection and press ENTER 5 1 7 2 Data Length Menu Path LOOP T Configuration Console Port Configuration Console Port Data Length Press ENTER from Console Port Data Length menu Data Length 8 bits To change data bits use left and right arrow key to cycle through to a desired selection and press ENTER 5 1 7 3 Stop Bit Menu Path LOOP T Configuration Console Port Configuration Console Port Stop Bit Press ENTER from Console Port Stop Bit menu Stop Bit 1 bit To change stop bits use left and right arrow key to cycle through to a desired selection and press ENTER Configuration Console Port 5 1 7 4 Parity Menu Path LOOP T Configuration Press ENTER from Console Port Parity menu Console Port Parity Parity NONE To change data parity use left and right arrow key to cycle through to a desired selection and press ENTER NOTE User MUST use front panel to set up console port configuration properly in order to use terminal and modem mode Dua Chapter 5 Front Panel Operation 5 1 7 5 Xon Xoff Menu Path LOOP T Configuration Console Port Xon Xoff Configuration Console Port Press ENTER from Console Port Xon Xoff Xon Xoff OFF To change use left and right arrow key to cycle through to a desired selection and press ENTER NOTE Xon Xoff flow control will be terminated when SNMP mode is selected Console Port Int
51. mode such as data rate clock mode data mode interface type RTS mode and TTM Master Clock Terminal Timing Mode Under configuration menu use left or right key to select DTE menu Save Config 5 1 3 1 Rate Menu Restore Config Console Port Time 38 Chapter 5 Front Panel Operation Configuration DTE 1 DTE 1 Rate DTE 1 Rate 64K N Path LOOP T Configuration Press ENTER from DTE 1 Rate menu To change the DTE data rate use left and right arrow key to cycle through to a proper selection and press ENTER Configuration DTE 1 DTE 1 Clock 5 1 3 2 Clock Menu DTE 1 Clock Path LOOP T Configuration NORMAL Press ENTER from DTE 1 Clock menu To change the DTE clock polarity to NORMAL or INVERTED use left and right arrow key to cycle through to a proper selection and press ENTER Configuration DTE 1 DTE 1 Data 5 1 3 3 Data Menu DTE 1 Data Path LOOP T Configuration NORMAL Press ENTER from DTE 1 Data menu To change the DTE data polarity to NORMAL or INVERTED use left and right arrow key to cycle through to a 5 1 3 4 Interface Menu proper selection and press ENTER Path LOOP T Configuration DTE 1 Configuration DTE 1 Interface To view the DTE 1 Interface press ENTER DTE 1 Interface v 35 5 1 3 5 RTS Menu Path LOOP T Configuration DTE 1 Configuration DTE 1 RTS Press ENTER from DTE 1 RTS menu 906 Chapter 5 Front Panel Operation DTE 1 RTS A
52. mote line loopback code Table 4 3 shows the ANSI T1 403 ESF data link remote line loopback code Remote line loopback test can be activated from the front panel and terminal Table 4 1 In band Control Codeword Remote LLB 10000 receive 5 0 5 second 100 receive 5 0 5 second 4 4 2 Remote Payload Loopback Remote payload loopback is illustrated in Figure 4 1 The remote payload loopback is initiated by the remote equipment through ESF data link message with AT amp T or ANSI protocol Table 4 2 shows the AT amp T ESF T1 403 ESF data link remote payload loopback code Remote payload loopback test can be activated from the front panel and terminal Table 4 2 AT amp T ESF Data Link Codeword Remote PLB ESF DL SX 25 Request Message 1 ESF DL SX 25 Request Message 2 Table 4 3 ANSI T1 403 Bit Oriented ESF Data Link Codeword Remote LLB 0 000111 011111111 repeat at least 10 times 0 011100 011111111 repeat at least 10 times Remote PLB 0 001010 011111111 repeat at least 10 times 0 011001 011111111 repeat at least 10 times 4 4 3 Remote Channel Loopback Remote channel loopback is illustrated in Figure 4 1 The remote channel loopback is initiated by the local equipment through following methods 1 In band remote channel loopback code In band activate and deactivate codes are used to enable and disable DTE to a TO LINE loopback This loopback provides an unique way to isolate problems of a specific data path from
53. n to Default Setting The unit is shipped with factory default setting To restore the factory default configuration press and hold the ESC key during power up until the display of TESTING changes to TESTING PASS 108 then press ENTER 3 1 3 Using Front Panel To use the front panel to configure the unit use the four keys to the right of the LCD The menu is tree structured with the main menu at the root of the tree The ESC key brings the user towards to root The ENTER key is used a to descend to branches of the menu or b to confirm a selection The left and right arrow keys is used to move the selection left or right 3 1 3 1 Review of Default Settings All the default settings can be reviewed or changed This is done by selecting the menu item Either a sub menu is shown or the selected setting is indicated with an asterisk 3 1 3 2 Line After power up the main menu is set to configuration Press ENTER to go to sub menus Use arrow keys to select LINE Then press ENTER Under LINE further sub menus can be selected For each sub menu the default LINE parameters are shown The actual settings are shown for each parameter which can be changed by arrow keys To change the settings use ENTER key to select the parameter use arrow key to select the new setting and then press ENTER again If ESC is pressed before ENTER the setting will not be changed 3 1 3 3 DTE To review or change DTE settings use arrow keys to
54. ng R command System will prompt with the following message Enter Y to store and N to quit gt gt Store Current Configuration Y N 6 20 Send Active 050 Map to Far end Enter W command to send current active DSO map information to far end Loop T CSU DSU Since the notification procedure is implemented in proprietary format only Loop Telecommunication s CSU DSU product family would interpret the message correctly Loop T has to be in ESF frame format mode to send the active 050 map to far end An ACK or FAIL is shown depending on whether far end accept the 050 map or not gt gt Send Active DSO MAP to Far end ACK 61 Chapter 6 Terminal Operations 6 21 Synchronize Far end System Time Enter N command to synchronize far end Loop T CSU DSU system time s minutes and seconds Due to the time zone difference hours is not updated by this command Since the notification procedure is implemented in proprietary format only Loop Telecommunication s CSU DSU product family would interpret the message correctly An ACK is shown if the far end acknowledges this command otherwise a FAIL is shown 6 22 Clear Alarms Enter U to clear alarm history and queues 6 23 Clear ESF Error Count Enter X to reset user ESF error counter The ESF error count start time is reset See Table 3 7 for what reports will be cleared 6 24 Clear Performance Data Enter Y to reset user performance registers This command does no
55. nless the jack is specifically designed for wet locations e Never touch un insulated telephone wires or terminals unless the telephone line has been disconnected at the network interface Usecaution when installing or modifying telephone lines Refer to the installation chapter in this manual for a safe and proper installation procedure All wiring external to this equipment should follow the current provision of the National Electrical Code National Electrical Code Requirements The Loop T FT1 CSU DSU including this equipment is ETL certified and is in compliance with UL 1459 The ETL control number for Loop T FT1 CSU DSU is 75425 viii DOC CS 03 Requirements NOTICE The Canadian Department of Communications label identifies certified equipment 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 user should ensure that it is permissible to be connected to the facilities of the local telecommunications company The equipment must also be installed using an acceptable method of connection In some cases 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 The customer should be aware that compliance with the abov
56. of Default Settings The entire configuration is shown when S is pressed To change any setting use the arrow keys to move to the target setting Then press the TAB key repeatedly to cycle to the desired setting for any selected parameter 3 1 4 2 Line Use arrow keys to move cursor to the target LINE parameter Then use TAB key to change the parameter setting When satisfied press ESC Confirm with Y yes 3 1 4 3 DTE Use arrow keys to move cursor to the target DTE parameter Then use TAB key to change the parameter setting When satisfied press ESC Confirm with Y yes 3 1 4 4 Map Setup Use arrow keys to move cursor to the target MAP parameter Then use TAB key to change the parameter setting When satisfied press ESC Confirm with Y yes 3 2 System Operation 3 2 1 Date This product is equipped with a RTC Real Time Clock User can change the current date and time as necessary The is activated by the manufacturer before shipping This is to save battery life The RTC battery has 10 years power off life cycle 3 2 2 Master Clock This product has a system clock PLL Phase Lock Loop which may be phase locked to the T1 line clock DTE clock or internal clock The T1 line clock and internal clock are all 1 544 Mbps The DTE clock is either 56KxN or 64KxN bps N is 1 to 24 as per the DTE rate configuration The default master and 2nd clock source are the T1 line clock When the master clock source is
57. om the simple to the complex The procedure ends when a definitive conclusion is made that the Loop T equipment is at fault To verify that the Loop T equipment is not at fault specialized equipment such as a BERT bit error rate test set is needed 4 6 1 Quick Test See if the LCD display on the Loop T has normal text If not Loop T has failed Remove all line and DTE connections to Loop T Remove power After a few seconds re apply power Observe the power up self test sequence If this fails then Loop T has failed See if the LEDs show any abnormal displays If yes use the LED indications to guide the user to test other parts of the network such as the T1 line or DTE equipment Especially during initial installation excessive errors may be due to a incorrect configuration of either Loop T or of the equipment at the other end of the line or b due to faulty line installation which results in excessive noise cross talk or impedance mismatch Especially in electrically noisy environments such as central offices use of shielded cables are mandatory 4 6 2 Substitution If a spare Loop T is available then replace the working one with the spare The user must carefully configure the spare exactly as the working one If the substitution clears the problem then the original working one is suspect Note that this is not definitive as other reasons may cause the same symptom A good practice is to reconfigure the original one and swap
58. once more If both units behave the same then the problem is probably elsewhere 4 6 3 Using Loopback Plugs Without a spare loopback plugs are handy for diagnosis Note that internal loopback facilities of the Loop T does not include the interface circuitry Thus a set of plugs one for each of the interfaces line and DTE are needed for complete tests These plugs are wired such that signals from the Loop T are loopback by hard wire back to the receive pin of the same plug Replace the line connector with a loopback plug Observe if the line is in sync If not then loop T has failed Then perform a QRSS test towards the line If this fails then Loop T has failed For the DTE ports a loopback plug must be used in concert with a far end Loop T if such a terminal is available then a QRSS test will determine if that DTE port is at fault Note that if a far end terminal is available the first test should be a local line loopback to see if the line is good If the local DTE has diagnostic capabilities then a loopback plug towards the DTE would help determine if the line to the DTE is good This can further help isolate the problem If tests with loopback plugs all pass then the problem is probably elsewhere Chapter 4 Maintenance 4 6 4 Using Bert Test Set If a BERT bit error rate test set is a available such as the Fireberd 6000 then a comprehensive suite of tests are available to examine the health of the Loop T With
59. ond 1 lt BPV lt 1544 1 CRC6 320 Severe Error Second BPV gt 1544 or OOF gt 1 CRC6 gt 320 or OOF gt 1 Controlled Slip Second frame slip 1 frame slip gt 1 OOF Out of Frame 2 frame bit error 2 frame bit error in 6 consecutive frame bits in 6 consecutive frame bits LOFC Loss Of Frame Count OOF for 2 5 0 5 sec OOF for 2 5 0 5 sec Unavailable Second 2 10 consecutive SES 2 10 consecutive SES Bipolar Violation Bipolar Error Count Bipolar Error Count ESF CRC6 Error not used always 0 CRC6 error or OOF or Out Of Frame Table 3 6 lists the types of reports available performance parameters provided by each report and the reset commands for each report Table 3 6 Performance Report Options Report Type Category Report Menu Command ES uas ses ses ess orc srv m Reports LIE wc Nc we we we Pme we CRC Eno com pene ENETNeword wwowm pem Y Report available and can be cleared by front panel RESET or admin terminal command Y X Report available and can be cleared by front panel RESET or admin terminal command X N C No clear Report available but counts cannot be cleared the user Report not available Rodi
60. ord is disabled 3 2 6 Configuration User can save the current configurations onto a non volatile memory This allows user to retrieve the last stored configuration 3 3 050 Channel DSO channel multiplexing is done by the DSO MAP command A map contains 24 DSO channels where a single DSO channel can be assigned to any one of the DTE ports An idle code is transmitted on all unused channels Two maps are available to store different DS0 channel assignments MAP1 and MAP2 e default active map is e The default DSO channel assignment of both MAP1 and MAP2 is idle channel 18 Chapter 3 Operation When two CSU DSU units are used in an end to end application there are two ways to configure both units to use the same DSO channel assignment One way is to send the current active map from the local CSU DSU to the remote unit using the SEND command Another way is to set up the local CSU DSU to automatically alternate between the two 050 channel assignments and MAP2 The latter method allows for example one channel map to be used during business hours and another map to be used after business hours To configure the local CSU DSU to automatically switch between the two maps first set the SWITCH time Next select SWITCH as the active DS0 map The current map associated with the SWITCH time is shown at the local CSU DSU and sent to the remote CSU DSU NOTE For DS1 network interface with B8ZS coding or all D
61. ore me this day of Notary Public My commission expires 68
62. ormance Press ENTER from Reset Performance menu Line Performance Reset Performance i Reset Performance Confirm At this menu press ENTER to confirm clear T1 line receiver user register performance status report Otherwise press ESC to exit without any action 5 5 Miscellaneous Menu 2 Configuration 5 5 1 Miscellaneous Menu Miscellaneous menu is used to view Loop T firmware EPROM Diagnostics version From following display Performance LOOP T Miscellaneous ili Miscellaneous and press ENTER Miscellaneous ROM Ver 1 14 02 15 97 52 Chapter 6 Terminal Operations 6 TERMINAL OPERATIONS Loop T FT1 CSU DSU provides comprehensive report and enhanced configuration capability through the console port A VT100 type terminal or a modem can be connected to the console port in the front of Loop T FT1 Using single character commands and arrow keys Loop T FT1 can be configured and monitored The single character command is not case sensitive On each screen the available commands and the configurable fields are highlighted Alarm messages are also sent to the console port and are shown on the top of the screen in blinking mode Upon Loop T FT1 power up a main menu is shown NOTE On the upper right corner of the screen a time of day display indicates the time the current screen is shown User may press any key other than ESC to update the screen NOTE ONLY in ESF frame format mode far
63. ote loopback to test remote Loop T FT1 CSU DSU and 051 network line quality 23 Chapter 7 Appendix A 8 APPENDIX B Front Panel Menu Tree 1 of 2 Main Menu o Loop T Configuration Diagnostics Loop T Loop T Loop T Alarm Performance Miscellaneous Configuration 0 0 Select 050 Active Active Line Frame ROM Version Configuration 050 1 Console Port Master Clock Map 1 Channel 1 Ene ode Baud Rate Configuration 0 0 Console Port Save Config Map2 Lng cep Data Length Configuration Map 1 Console Port Hester Channel 1 24 Lino VEL Stop Bit Config Console Port Parity Configuration Date 0 0 Switch Time Map1 Map2 Time Line Inband Console Port Xon Xoff Configuration Time 050 Send Sending Active Map Line Address o o o D x Console Port Interface Line Configuration Idle Code Line Console Port My IP Configuration Console Port Console Port Trap IP DTE 1 DTE 1 DTE 1 DTE 1 DTE 1 DTE 1 DTE 1 DTE 1 DTE 1 Rate Clock Data Interface RTS TTM V54 RL LL Configuration DTE 1 64 o 9 H Configuration Configuration Master Clock Configuration DS0 Map Configuration Line Configuration DTE 1 Configuration Console Port Configuration Save Config Configuration Restore Config Configuration Date Configuration Time Chapter 8 Appendix B Front Panel Menu Tre
64. proprietary codes are utilized to send remoter loopback commands to the far end facility Inband codewords are supported by D4 ESF or ESF amp T1 403 framing format When using AT amp T FDL messages the Line port must be set for ESF or ESF amp T1 403 framing format When using ANSI FDL messages the Line port must be in ESF amp T1 403 framing format All remote loopback can be activated from the front panel or the terminal If the remote facility responds to a remote loopback activate command a LOOPED message appears in the lower left corner of the display If the remote facility responds to a remote loopback deactivate command a NOLOOP message appears If the remote activation deactivation fails an error message appears It is best to use remote loopbacks in conjunction with QRSS diagnostics testing to measure the T1 network line integrity The procedure is as follows 1 Send a remote loopback command to cause the remote facility to perform a loopback 2 Activate the QRSS diagnostics test 28 Chapter 4 Maintenance NOTE Deactivate the far end loopbacks from the front panel or the terminal depending on where it was activated Following are descriptions for each type of far end loopback 4 4 4 Remote Line Loopback Remote line loopback is illustrated in Figure 4 1 The remote line loopback is initiated by the remote equipment through inband signal or ESF data link message with AT amp T or ANSI protocol Table 4 1 shows the inband re
65. ration 4 2 Chapter 2 Installation INSTALLATION CAUTION Never install telephone wiring during a lightning storm Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations Never touch un insulated telephone wires or terminals unless the telephone line has been disconnected at the network interface Use caution when installing or modifying telephone lines 2 1 Site Selection The following are guidelines for site selection These guidelines must be followed to ensure a proper installation site The installation site should have an AC power receptacle The following are the maximum suggested cable lengths 1 V 35 200 Feet 2 5449 200 Feet 3 RS232 50 Feet 4 EIA530 200 Feet 5 X 21 200 Feet NOTE If longer distance is desirable a lower than maximum speed with proper cabling and grounding is advisable For more information please contact Loop Service Representative The installation site should provide space for adequate ventilation and cable routing Reserve at least 5 inches at the rear of the unit for cables and air flow The site should provide a stable environment The operating area should be clean and free from extremes of temperature humidity shock and vibration Relatively humidity should stay between 0 and 9596 Do not operate the unit at an altitude greater than 10 000 feet Chapter 2 Installation 2 2 Mechanical and Electrical Installat
66. right arrow key to cycle through to a proper selection and press ENTER ESF amp T1 403 indicates ESF frame format is chosen and facility data link message follows ANSI T1 403 standard While ESF indicates ESF frame format is chosen and facility data link follows AT amp T PUB 54016 standard 5 1 2 2 Code Format Menu Path LOOP T Configuration Line Code Line Configuration Press ENTER from Line Code menu Line Code AMI To select the coding scheme use left and right arrow key cycle through to a proper selection and press ENTER 5 1 2 3 Line Build Out LBO Menu Path LOOP T Configuration Line i Line LBO Configuration Press ENTER from Line LBO menu Line LBO 0 dB To change the LBO use left and right arrow key to cycle through to a proper selection and press ENTER 5 1 2 4 Yellow Alarm Menu Path LOOP T Configuration Configuration Line Line YEL Press ENTER from Line YEL menu Line YEL ON Yellow alarm menu shows the current yellow alarm transmission state when Loop T loss of signal and loss of frame sync To enable yellow alarm being automatically send out when loss of signal and loss of frame sync use left and right arrow key to cycle through to ON and press ENTER To disable yellow alarm sending use left and right arrow key cycle through to OFF and press ENTER 5 1 2 5 Menu Path LOOP T Line Inband Configuration Configuration Line VU Press ENTER from Line Inband
67. rt as follows Alarm History Report 15 35 39 02713 97 LOCAL Start Time 23 42 34 09 20 00 ALARM TYPE THRESHOLD CUR STA COUNT ALAR MAST CLK LOSS DISABL DISAB YEL DISAB DISAB AIS DISAB DISAB LOS DISAB DISAB LOF DISAB DISAB BPV DISAB DISAB ES LINE DISAB DISAB UAS LI DISAB DISAB CSS LI DISAB DISAB A DISAB DISAB DIALOUT DISABLE DISAB DISAB DISAB DISAB DISAB DISAB DISAB DISAB DISAB Ed p pH Dd Dd Idus tb IE VES toT Ld Ed Eb Dr Dr Edi Er EH Ld E Eb Dd Dri Dub Dd Dd Du Dd D m m L IM lt lt Press ESC Key to Return to Main Menu gt gt 6 8 System Status Report To show the Loop T FT1 status report enter I A prompt asking for the type of system status report at the bottom of the screen gt gt Select Type LOCAL FAR END gt ENTER Use cursor keys to select a desired type of report and Enter key to view the report as follows 57 Chapter 6 Terminal Operations Loop T Status 15 35 45 02 13 97 LOCAL LINE PATTERN TRANSMITTED OFF LOS Yes ORSS CHANNEL gt OFF LOF Yes NEAR END LOOPBACK OFF RCV AIS No DTE1 LOOPBACK TO DTE RCV YEL No XMT AIS No XMT YEL Yes BPV ERROR COUNT ES ERROR COUNT DTEB DTEl RTS LOSS DTEl CLOCK LOSS lt lt Press ESC Key to Return to Main Menu gt gt In the example DTE1 port i
68. rwise error message will indicate If far end facility acknowledge this command an ACK will be shown on the LCD display Otherwise a FAIL message is shown on the LCD display 5 1 1 2 Map1 Menu Path LOOP T Configuration 0 0 Configuration 0 0 Map1 Map1 menu is used to change the port assignment for each DSO channel To change a specific DSO channel port assignment press ENTER form Map1 menu For example to change Channel 1 port assignment Path LOOP T Configuration 0 0 Map1 Configuration 0 0 1 Channel 1 use left or right arrow key cycle through to a proper designated port and press the ENTER key to select Ch 1 2 128K DTE 1 As the above example indicates channel 1 is assigned to DTE port right top corner 2 128K indicates there are two 050 channels assigned to DTE port and corresponds to 128 Kbps of total 1536 Kbps bandwidth currently NOTE Map2 Menu operation is similar 2856 Chapter 5 Front Panel Operation 5 1 1 3 Switch Time Menu Path LOOP T Configuration 0 0 Configuration 0 0 Switch Time Switch Time menu shows the current and MAP2 schedule as the following display In this case MAP1 is scheduled START from 23 00 and END at 12 00 and MAP2 is scheduled START from 12 00 and END at 23 00 To change MAP1 and MAP 2 schedule use left or right arrow key to the digital position and press ENTER key to cycle through the time number This operat
69. s looping back DTE port signal to DTE Yellow alarm is sending out to the line 6 9 Alarm Queue Report To show the alarm queue report enter Q Alarm Queue 15 35 50 02 13 97 lt lt Press ESC Key to Return to Main Menu gt gt The latest 40 alarm entries are shown on the terminal as above in two pages of 20 entries each If there are more than 20 entries press any key other than ESC to view the 2nd page To return to main menu press ESC key 6 10 Logoff After completing the system setup or clear history data user should log off to prevent accidentally changing the system configuration Enter F to Logoff 6 11 V54 Setup To show the V 54 setup press K from main menu A pormpt asking for the type of system setup menu at the following screen gt gt Select Type LOCAL FAR END lt gt ENTER Cursor keys are used to select the field to be changed As the cursor moves from field to field the second line on the screen shows the available input for the field After making all the changes enter ESC key and answer yes to take the change into effect 58 Chapter 6 Terminal Operations Local V 54 Setup 11 36 47 06 11 99 ARROW KEYS CURSOR MOVE TAB ROLL UP V 54 OFF RL OFF LL OFF lt lt Press ESC Key to Return to Main Menu gt gt 6 12 Logon To show a full menu user has to Logon If the password option is turned on a prompt asking for password is
70. s used as positive logic or negative logic 3 5 4 RTS DTE facility can use RTS Request To Send to control transmission When RTS is ACTIVE and in OFF state all ones are sent to the T1 line side on the DTE port associated with the DS0 channels When RTS is PERMANENT RTS signal is ignored and forced ON permanently 3 5 5 TTM In a normal operating mode The CSU DSU uses the transmit clock from CSU DSU to sample the transmit data sent from the DTE In the Terminal Timing Mode TTM the CSU DSU uses the external clock from the DTE to sample the transmit data This avoids data reception problems due to phase delay caused by long cables If the DTE cable is too long the transmit data after traversing the cable may not be in phase with the transmit clock By using this feature the transmit data will be in phase with the sampling clock which in this case will be the external clock from the DTE Note that the external clock from the DTE can also be used as the CSU DSU system clock This choice is independent of the TTM option See the section on Master Clock for details 3 5 6 Interface The DTE port interface type can be either 35 RS449 RS232 EIA530 and X 21 User must specify the proper interface type when ordering The user can read the interface type from LCD or terminal 20 Chapter 3 Operation Table 3 3 DTE Port Default Setting Default 56K 64KxN N 1 24 64KxN NORMAL INVERTED NORMAL NORMAL INVERTED NOR
71. sent Off Reguest to send signal off Red Loss of external clock from DTE 24 Chapter 3 Operation 3 8 Error Message Loop T FT1 provides various error messages on LCD display to indicate abnormal condition as listed in Table 3 8 Table 3 8 Error Message Table Modem error 3 9 Embedded SNMP Agent Optional The optional embedded SNMP agent for Loop T FT1 CSU DSU offers standard RFC 1213 MIB Il and RFC 1406 DS1 MIB as well as Loop Telecom s enterprise MIB Although Loop does not endorse any one Network Management product the following products have been tested For workstation HP J6700 HPUX version 11 0 running under SLIP command pppd 140 28 1 23 140 28 1 17 slip dedicated dev ttyOp0 38400 mru 576 netm ask 255 255 255 0 extra slip end amp For network management system HP OpenView SUN workstation and SNMPc running in PC to monitor and control Loop T FT1 CSU DSU This enables user to integrate WAN equipment management with LAN SNMP network management systems The embedded SNMP agent also includes Telnet implementation to allow user to access Loop T FT1 CSU DSU terminal interface from any workstation in the network Async Terminal Server Ethernet Figure 3 1 SNMP Connection The Loop T FT1 CSU DSU uses the console port to provide the embedded SNMP agent functionality Typically a workstation can be configured to run SLIP protocol on its a sync ports If there is only few Loop T that needs SLIP interface no
72. signal is looped back to the outgoing T1 signal before the T1 transceiver framer This loopback is used to isolate the local equipment from a troubled T1 transmission line Line loopback test can be activated from the front panel and terminal 4 3 3 Payload Loopback Payload loopback is illustrated in Figure 4 1 The incoming signal is loopback to the outgoing T1 signal after the T1 transceiver framer This loopback is used to isolate the DTE port from the troubled T1 transmission line Payload loopback test can be activated from the front panel and terminal 4 3 4 DTE Port Loopback DTE port loopback is illustrated in Figure 4 1 There are two types of loopback as TO DTE and TO LINE TO DTE is that DTE incoming signal is loopback to the DTE outgoing signal TO LINE is that DTE PCM outgoing signal is loopback to the DTE PCM incoming signal This loopback is used to validate the system integrity of DTE facility DTE loopback test can be activated from the front panel and terminal While in TO DTE loopback all ones are send to T1 network line outgoing direction on DTE associated 050 channels NOTE DTE loopbacks work only when one or more DSO channels are mapped to the DTE port 4 4 Far End Loopback Far end loopbacks remote line loopback remote payload loopback remote channel loopback and V 54 loopback can be activated by the local CSU DSU to cause a remote facility to perform the loopbacks Inband codes AT amp T and ANSI FDL protocols and
73. stics polling status reports etc The console port must be set to a proper operational mode If necessary the user must use the Front Panel to set up the console port to use either a local or a remote terminal The console port baud data bit length stop bit length parity bit length XON XOFF flow control and interface type set as shown in TABLE 3 1 Table 3 1 Console Port Default Setting Default 9600 38400 19200 2400 1200 9600 Data Bit 8 7 bit per byte interface NOTE For optimum operation T2500 amp async server should be set to 9600 3 2 4 Menu Lock The LCD front panel and terminal are used to read alarms system configurations and system status The also can be used to change system configurations and clear the alarm queue etc By enabling the menu lock only read operations are allowed Modifications to the current status are not allowed Users may not change system configurations or clear performance data e Password and menu lock options are disabled by default e default terminal access password is LOOP 3 2 5 Logon Logoff and Password Logoff prevents system configuration changes at the terminal while logon allows system configuration changes The password feature is used to augment lock control against unauthorized terminal users With password enabled logon requires entering the correct password If password is disabled no password is required to logon The default option of the passw
74. t affect the contents of the performance register set This command includes the functions of See Table 3 7 for what reports will be cleared 6 25 System Reset Enter Z to reset the system without power down the unit Upon this command system will restart from init routine and perform all power up diagnostics procedures System will prompt the following message and user must enter a valid password to execute this command gt gt Enter Password 62 Chapter 7 Appendix A 7 APPENDIX A QRSS Quasi Random Signal Sequence QRSS Quasi Random Signal Sequence is defined in ANSI T1 403 1989 consists of a PRBS with 20 stage shift register modified to limit the maximum number of sequential zeros transmitted to 14 The QRSS generates every combination of 20 bit words repeats every 1 048 575 bits and contains high density sequences low density sequences and sequences that change from low density to high density and vice versa When framed the QRSS meets the pulse density criteria to provides no more than 15 zeros in a sequence The pattern is generated in a twenty stage register whose 17th and 20th stage outputs are added in a modulo two addition stage and the result fed back to the input of the first stage An output bit is forced to be a ONE when the next 14 bits are all ZERO This test pattern can be used in conjunction with local loopback to test local Loop T FT1 CSU DSU integrity It can also be used in conjunction with rem
75. te Secondary Clock Menu operation is similar 0 0 1 Master Clock Save Config Restore Config Console Port ____ Master Clock Time Path LOOP T Configuration Configuration Master Clock Press ENTER from Master Clock Primary Clock Primary Clock Primary Clock INTERNAL To change the clock source to LINE INTERNAL DTE 1 use left and right arrow key to cycle through to a proper selection and press ENTER Master Clock Curr CIk 2nd 5 1 4 2 Current Active Clock Menu Current Active clock menu shows the current active clock source is PRIMARY master clock or 2nd master Path LOOP T Configuration Configuration Master Clock clock 41 Chapter 5 Front Panel Operation 5 1 5 Save System Configuration Menu Save system configuration menu is used to store system DSO Map configuration Under Configuration menu use left or right key to select Save Config menu Path LOOP T Configuration Configuration Save Config Press ENTER from Configuration Save Config Save Config Line DTE 1 T Master Clock Save Config Restore Config Confirm Console Port At this menu press ENTER will store the current working Time configuration onto user stored configuration A WAIT OK is shown on the LCD display Otherwise press ESC to exit without any action 5 1 6 Restore System Configuration Menu DS0 Map Restore system configuration menu is used to retrieve s
76. the change into effect Local System Setup ARROW KEYS CURSOR MOVE TAB ROLL UP SWITCH TIME 00 00 12 00 MAP2 12 00 00 00 LINE FRAME ESF CODE AMI LBO 0 0 YEL ON INBAND ON ADDR CSU IDLE FF RATE lt MAP1 gt lt 2 gt CLOCK DATA INTERFACE RTS TTM DTEl 64K 0 OK 0 OK NORMAL NORMAL Vess ACTIVE OFF MAST CLOCK LINE 2nd CLOCK LINE CURRENT 2nd CLOCK RS 232 PORT BAUD 9600 DATA 8 STOP 1 PAR NONE XON XOFF OFF INTERF TERMINAL DIAL OUT SETUP PRIMARY DIALSTRING ATDT 32 char START TIME 08 00 STOP TIME 07 59 SECONDARY DIALSTRING ATDT 32 char START TIME 08 00 STOP TIME 07 59 INACTIVITY TIMEOUT 0 MINUTES DEVICE NAME LOOP T 01 20 char SNMP ACTIVATION CODE 16 char lt lt Press ESC Key to Return to Main Menu gt gt 6 18 Change Date and Time Enter T to change the system date and time The date and time are shown with the cursor on the hour field Use the arrow keys to select the field to be changed and enter the correct information 15 36 41 02 13 97 lt gt CURSOR MOVE 0 23 INPUT Press the Esc key after making the necessary changes and confirms the changes with Y Input is checked for validation Invalid information is discarded and the original value is shown gt gt DATE amp TIME Setup Y or N 2 6 19 Store Current Configuration Enter V to save the working configuration to the user stored configuration so that it can be retrieved usi
77. tion about the Loop T If you contact our customer service concerning the Loop T product please have those information ready gt gt Select Type LOCAL FAR END lt gt ENTER Use cursor keys to select a desired type of report and Enter key to view the report as follows Loop T Description 15 35 29 02 13 97 LOCAL Serial Number 001001 Main Board Version 096 ROM Version t Loop T V1 14 02 15 1997 Configuration DTE1 DS1 SNMP lt lt Press ESC Key to Return to Main Menu gt gt 6 6 ESF Error Count Report To show the ESF error report enter E A prompt asking for the type of report at the bottom of the screen gt gt Select Register Type USER LINE FAR END gt ENTER Use cursor keys to select a desired type of report and Enter key to view the report as follows 56 Chapter 6 Terminal Operations ESF Error Count 15 35 34 02 13 97 USER Start Time 23 42 34 09 20 00 ESF Errors 0 lt lt Press ESC Key to Return to Main Menu gt gt For user performance register set the ESF error count is the number of ESF error since the reset ESF error count command is executed 6 7 Alarm History Report To show the alarm history report enter H A prompt asking for the type of alarm history report at the bottom of the screen gt gt Select Type LOCAL FAR END gt ENTER Use cursor keys to select a desired type of report and Enter key to view the repo
78. which is intended to be decoded within the telecommunications network The encoded analog content and billing protection is factory set and is not under the control of the customer 67 Chapter 10 Appendix D attest that operator s maintainer s of the digital CPE responsible for the establishment maintenance and adjustment of the encoded analog content and billing information has have been trained to perform these functions by successfully having completed one of the following Check appropriate blocks a A training course provided by the manufacturer grantee of the equipment used to encode analog signals or b A training course provided by the customer or authorized representative using training materials and instructions provided by the manufacturer grantee of the equipment used to encode analog signals or c An independent training course e g trade school or technical institution recognized by the manufacturer grantee of the equipment used to encode analog information or d In lieu of the proceeding training requirements the operator s maintainer s is are under the control of a supervisor trained in accordance with circle one above agree to provide Telco s name with the proper Telco s Name documentation to demonstrate compliance with the information as provided in the preceding paragraphs if so requested Signature Title Date Subscribed and sworn to bef
79. ystem configuration Under Configuration menu use left or right key to Line select Restore Config menu Path LOOP T Configuration Press ENTER from Configuration Restore Config menu DTE 1 Configuration Master Clock Restore Config Save Config Restore Config Restore Config Console Port Confirm TH Time At this menu press ENTER will retrieve the user stored configuration to the current working configuration A WAIT OK is shown on the LCD display Otherwise press ESC to exit without any action NOTE When the user stored configuration is retrieved all loopback tests will be terminated and all alarm queue and alarm history are reset The current working configuration will be overwritten 050 5 1 7 Console Port Menu Line The menus are used to configure console port to select data rate data bits stop bits parity bit XON XOFF control interface type and SNMP DTE 1 control as the following paragraph Under Configuration menu use left or right key to select Console Port menu Master Clock NOTE The front panel must be used to set up the Console port Save Config interface type Restore Config Console Port Time 42 Chapter 5 Front Panel Operation 5 1 7 1 Baud Rate Menu Path LOOP T Configuration Configuration Console Port Press ENTER from Console Port Baud Rate menu Console Port Baud Rate Baud Rate 9600 bps To change data speed use

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