User`s Manual - Industrial-Grade
Contents
1. Command Values AT LCSHWM Displays free buffer RAM 10 4 Identification I reports information to the host that may be used to help identify the product Default N A Storage N A Command values ATI Report product identity 10 5 Z Soft Reset And Restore Saved Settings The Z command will soft reboot the modem without removing power Default N A Storage N A Command values ATZ Resets the modem 10 6 amp F Restore Factory Defaults SF loads the modem s factory default configuration The factory default values for each parameter command can be found in the description for each command in this documentation Default N A Storage N A Command values AT amp F Resets the modem to factory defaults 10 7 amp W Save Configuration To Non Volatile Memory amp W saves the modem s configuration to non volatile memory The saved configuration values will be restored automatically on power up or if the ATZ command reset is issued Default N A Storage N A Command values AT amp W Saves all current settings to memory 11 0 Frequently Asked Questions Below are twelve of the most Frequently Asked Questions The answers contained herein may address many of the questions you could have about our product 11 1 Does The Modem Understand AT Commands Yes For information on AT commands see the AT Command Reference section 12 0 11 2 At What Speed Can I Send Data CDMA data transmission provides faster and mor2. Land Cell Land Cellular Corporation User s Manual CDMA Cellular Model CDM 820s Intelligent Serial Modem CDMA Cellular Model CDM 820se Intelligent Ethernet Modem Revision 3 4 November 2004 Contents ERR hale ee e EE 5 A esiste 5 12 Modem Capablanca 6 13 Operating SEAS SSA SS 6 LA The Types Of Data Call peak AGRA 7 A ere en Pe pe Re eet ee er RRP E aE Mic Orne RE RC ne REO oO Pee 7 16 SAT AMC AL OES nii rah eee 7 20 Moden Setup Guides riada 8 Gems EE 8 3 0 Using Terminal Emulation Software To Talk To The Modem oococcnoccccocccnoonnncnnncnnnnnos 8 3 1 Serial Connection Reference Table A A O 9 ANACO The TEE 9 4 1 Over the Air Provsiommsi ee 9 3 0 Troubleshoot ES ood O 10 ST HU se ee 10 5 2 Diagnosing COM Port Problems Using Hyperterminal oooooonnncccnnnccccnonccinoncnnnnnos 11 5 3 Altering The Modem s Cellular Parameters ooooococnnocccnoncccooncnononcnonnnnnnnoncconancnnnnnos 11 5 4 Entering Offline Digital Mode a a ines 12 5 5 Unlocking The Service Programming Code SC 12 5 6 Entering The Mobile Identification Number MIN 12 5 7 Entering The Mobile Country Code OMC 12 5 8 Entering The Mobile Network Code MN 12 6 0 v 250 Configuration Commande 13 6 1 E Command Echo EE 13 62 Q Quiet Mode nica do aiii las 13 0 FRUE cd PO TN 13 64H Hane Ubica 13 6 5 O Return To Online Materia iaa 14 6 6 Enter Online Command State cecccccssscecssccecseeceessecesssecesssecesssseeesseeesnees 14 0 7 amp D
3. 3 TX Transmit Data 4 DTR Data Terminal Ready 5 GND System Ground 6 DSR Data Set Ready 7 RTS Request to Send 8 CTS Clear to Send 9 RI Ring Indicator Note Direction is DTE relative DCE Below you will find pinouts of the RS 232 DB 9 Male and Female connectors 1 5 5 1 00000 0000 6 9 9 6 Male Female Default RS 232 Communication Parameters Bits Per Second 57600 Data Bits 8 Parity None Stop Bits 1 Flow Control Hardware 13 2 RJ 45 Ethernet Port Integration Parameters You can use the guide below to design ethernet cables to integrate the CDM 820se into your systems Standard RJ 45 Ethernet Pinout Pin Function Color 1 TX White Orange 2 TX Orange White 3 RX White Green 4 Blue White 5 White Blue 6 RX Green White 7 White Brown 8 Brown White Below you will find pinouts of the RJ 45 Ethernet Plug and Jack connectors a 1 1 8 EP Plug Jack 14 0 Quick Reference Guide Below you will find a Quick Reference Guide of the AT commands most commonly used in day to day operation of the modem Entering Access Codes To retrieve the Serial Number of the modem in hexadecimal format AT GSN To perform Over the Air Service Provisioning OTASP Verizon AT CDV 22899 To change to Offline Digital mode AT KWMODE 1 To enter the SPC and unlock the modem for programming AT K WSPC 000000 To enter the Mobile Identification Number MIN AT K WDIR lt MIN gt To enter the
4. Rm default rate set at 57600bps ICF Local RS 232 Interface Character Framing This parameter determines the character framing used at the local RS 232 interface The syntax is AT 1CF lt format gt lt parity gt Where lt format gt is a single digit and determines the number of data bits the presence of a parity bit and the number of stop bits in the start stop frame according to the following table lt format gt Meaning 1 8 Data 2 Stop 2 8 Data 1 Parity 1 Stop 3 8 Data 1 Stop lt parity gt is a single digit and determines how the parity bit is generated and checked if present according to the following table lt parity gt Meaning Odd 1 Even The lt parity gt argument is only valid when lt format gt is set to 2 The default settings for the modem are AT ICF 3 1 12 6 Cellular CDMA Commands The cellular CDMA commands use the same syntax as the other extended commands Numeric values are decimal The following table describes the cellular CDMA commands CDMA AT Parameter Commands Table Command Description CAD Query Analog Or Digital Service Returns 0 If no service is available 1 If CDMA digital service is available 2 If TDMA digital service is available 3 If analog service is available Values 4 255 are reserved CSS Serving System Read Only Returns lt AB gt lt SID gt AB A The mobile station is registered with an A band system B The mobile station is registered with a B band
5. or Server Default N A Storage N A Command values ATD lt profile number gt To connect just this one session Will not redial if connection is lost or if DTR causes a disconnection ATD lt IP gt Connects to the IP address specified Connects utilizing the same method as AT LCGASC 1 7 3 AT LCGASC Enable 1xRTT Auto Session Connect Enables or disables automatic connection and login to the 1xRTT network The AT LCGASC command does not save automatically In the instance of a power loss the modem will revert to LCGASC 0 To save this command issue AT amp W after setting LCGASC This will cause the modem to automatically sign on to the cellular network when power is restored Default 0 Storage amp W Command Command values AT LCGASC 0 Maintain Command State unless a connection is otherwise initiated with the ATD or ATD lt IP gt command Also disconnects an existing session AT LCGASC 1 Auto connect to the 1x network via Profile 1 AT LCGASC 2 Auto connect to the 1x network via Profile 2 AT LCGASC 3 Auto connect to the 1x network via Profile 3 7 4 AT LCGRST End Cellular Session This command will kill the current RF session and bring the modem to Command State The tearing down of the RF session in an orderly manner may take several seconds to complete During this time the device may appear locked Default N A Storage N A Command values AT LCGRST Kills the current RF session NOTE If AT LCGASC 1 2 or 3 t
6. rebooted during its lifetime due to ping failure NOTES e The Ping Reset Utility saves automatically and is executed upon boot e The IP Address To Ping may be an IP or a domain name eg land cellular com e Each ping attempt will actually send up to 3 pings at 3 second intervals All 3 pings have to fail to count as a ping failure e If the Ping Reset Utility is running and the modem is not connected to the cellular network the utility will cause the modem to unexpectedly reboot as the ping will not return successfully Example Profile Setup String AT LCLTPH 216 239 57 99 1800 20 5 This will set up the Primary Ping Timer Inter Ping Timer to send out a ping to IP 216 239 57 99 every 1800 seconds ie 30 minutes If the Primary Ping fails then the timer falls back to the Secondary Ping Timer Accelerated Ping Timer of 20 seconds as indicated in the example above If the Secondary Ping then fails five times sequentially the modem will increment the Ping Failure Count by one and reboot If the Secondary Ping returns successfully at any point before reboot then the modem will return to utilizing the Primary Ping Timer 8 0 RS 232 PAD Configuration Commands PAD which stands for Packet Assembler Disassembler is a function employed by the RISC processor to split the incoming data stream into discrete packets for transmission over the cellular network The commands in the following section explain how to set up the PAD for your nee
7. Indicators There are a total of four LED s on the Land Cellular Intelligent Modem two green one amber and one red The green LED next to the DC power jack is the Power Indicator LED This LED will illuminate when power is applied to the modem The other three LEDs are grouped on the opposite end of the modem next to the SMA antenna connectors Listed below are the specifications of the LEDs and their corresponding colors POWER Green The green Power LED indicates correct power is applied to the DC power input Jack DCD Amber The amber Carrier Detect LED illuminates to indicate a connection to a remote system or service Tx Rx Red The red Transmit Receive LED will flash to indicate that data is being transmitted to or received from the cellular network The Tx Rx LED will flash once upon power up when the modem registers onto the cellular network Also the LED will flash once every five seconds during KMIP requests for RSSI RSSI Green Of the three radio link status indicators the green LED is used to show Received Signal Strength There are three possible states that the RSSI LED can operate in based upon signal level If the RSSI LED is powered off this means that the RSSI is less than 110dbm When the RSSI level is between 110dbm and 90dbm the LED will flash about once a second If the RSSI LED is on solid this indicates an RSSI level of 90dbm or greater While not in a data session the modem checks
8. MIP Only packet data username 9544305811 vzw3g com and password vzw and a TCP data transport Further this particular session will sit online and function as a TCP server listening for a connection from 207 234 195 185 on port 80 Additionally any transmitted packets will not be modified according to Addressed Serial Protocol specification the data will be transported raw with no encapsulation Please see section 19 1 Addressed Serial Protocol Specification for more information on how the Local Serial Protocol specification formats the data stream Tf the IP is set equal to 0 0 0 0 this activates a wildcard feature This will disable IP filtering for that connection and allow all IP s on the specified port to connect There is no wildcard for the port Only the specified port will be allowed to connect to the modem 7 2 ATDn Connection String The ATD n command will initiate a one time connection utilizing the settings in the referenced profile ATD1 connects using profile 1 ATD2 connects using profile 2 etc ATD lt IP gt will initiate an online session utilizing the same settings as AT LCGASC 1 and then connect to the IP address listed after the asterisk Note that when dialing a mobile originated session utilizing ATDn the Modem Functionality setting is ignored In this case the modem will allow only the trusted IP listed in the profile but will only act as client regardless of whether the bit is set to Client
9. Miscellaneous System And Diagnostic Commande 27 10 1 AT LCCOPT Configuration Options rsovoenvanornaneonnaneennonennnensennaneennanenrneseennene 28 10 2 AT LCSHWT Show Running Threads A 28 10 3 AT LCSHWM Show Free Memor 28 COAT e ee ee 28 10 5 Z Soft Reset And Restore Saved Settings KEEN 29 10 6 amp F Restore Factory Defaults ssc cscssisssintsasiausiedatasaniacsvissdeatasecdeaeadededetessseedenneadantss 29 10 7 amp W Save Configuration To Non Volatile Memor 29 11 0 Frequently Asked Questions etica its 29 11 1 Does The Modem Understand AT Commande 29 11 2 At What Speed Can I Send Data TER 29 11 3 How Do I Perform An Over the Air Activation Of The Unit an 29 11 4 What AT Command Changes The Baud Rate Of The Modem A 30 11 5 What Is The AT Command To Check The Baud Rate rrorononnrornnorerrvnrrrrnrennrn 30 11 6 What Is The AT Command To Change The Flow Control 30 11 7 When Do I Need A Null Modem Cable rnrnrnnrnronnrnnennnnvennnnrennnnrernnererrnserrrnssnrsee 30 11 8 Do I Need A Crossover Or Patch Ethernet Cable A 30 11 9 What Is Dormaney unit a E E G 30 11 10 Can I Change The Phone Number Of The Modem AAA 31 11 11 Does The Modem Require Any Special Drivers 31 11 12 Is There A Graphical User Interface GUI For The Modem eee 31 2 OAT Command Rae 31 LITEN ss TEMAET 31 12 2 Command Lies MA dude 31 A OA 32 124 BASE AT Parametre 32 123 Extended eu EE 33 126 C luat CDMA Enn O os 35 13 0 Layer 1 Hardware Com
10. Mobile Country Code MCC AT KWMCC lt 3 digit MCC gt To enter the Mobile Network Code MNC AT K WMNC lt 2 digit MNC gt To write configuration changes and reset the modem type AT KWMODE 2 Communication Parameters To check the baud rate AT IPR To change the baud rate AT IPR lt baud rate gt Valid rates 300 1200 2400 4800 9600 14400 19200 38400 57600 115200 bps To change the flow control AT IFC 2 2 The values are 0 No Flow Control 1 Xon Xoff 2 Hardware Query Analog Or Digital Service AT CAD Returns 0 No service is available 1 CDMA digital service is available 2 TDMA digital service is available 3 Analog service is available To check the signal strength AT CSQ Returns lt Signal Quality gt lt Frame Error Rate gt Signal Quality Measure lt SQM gt 0 31 Signal Quality Measurement 99 SQM is not known or is not detectable Frame Error Rate lt FER gt 0 lt 0 01 1 0 01 to less than 0 1 2 0 1 to less than 0 5 3 0 5 to less than 1 0 4 1 0 to less than 2 0 5 2 to less than 4 0 6 4 to less than 8 0 7 gt 8 0 99 FER is not known or is not detectable Miscellaneous Commands Echo commands in command state or in online state ATE1 Do not echo commands in command state or in online state ATEO Display result codes as numbers ATVO Display result codes as words ATV1 Dump configuration parameters AT amp V Return to Online State from Command State ATO Reset
11. applications you should be using a standard RS 232 straight cable To check if you need a Null Modem cable view the When Do I Need A Null Modem Cable section 11 11 in the FAQ For further assistance refer to the Troubleshooting section 5 0 of this manual 4 0 Activating The Modem After issuing the AT command to verify communication with the modem you are ready to initiate the air link connection with the cellular tower Before the modem is able to place or receive calls you must subscribe to a cellular provider When subscribing to their service you will be asked for the Electronic Serial Number ESN of the unit This number is printed on the data label affixed to the modem The number is available either in decimal or hexadecimal format You may also query the ESN directly from the modem by opening your terminal emulation software and issuing the following command AT GSN This command will return the ESN in hexadecimal format 4 1 Over the Air Provisioning The CDM820 series modems support the service provisioning features called Over the Air Service Provisioning OTASP and Over the Air Parameter Administration OTAPA OTASP occurs when a user initiates a call to the service provider No further commands are required to provision the modem For example a user who gets a new modem phone without any service programming data can call the service provider s special OTASP number to have the device programmed without physically taking it t
12. codes ATV1 Send long form verbose result codes 6 4 H Hang Up This command instructs the modem to disconnect from the remote device terminating any and all active sessions Default N A Storage N A Command values ATH Disconnects the current session 6 5 O Return To Online State This command instructs the modem to return to Online Data State and issue a CONNECT or CONNECT lt text gt result code Default N A Storage N A Command values ATO Returns to Online State 6 6 Enter Online Command State If the modem detects the escape sequence from the Serial Port while in the Online Data State the terminal will enter Online Command State Default N A Storage N A Command values Escapes to Online Command State 6 7 amp D DTR Configuration This parameter determines how the modem responds when the Data Terminal Ready circuit changes state The amp D5 and amp D6 settings allow customer specific applications to be controlled via the DTR line Default amp DO Storage SW Command Values AT amp DO Ignore DTR AT amp D1 If in the Online Data State upon an on to off transition of DTR the modem enters Online Command State and issues an OK result code the call remains connected Otherwise ignore DTR AT amp D2 If in the Online Data State or Online Command State upon an on to off transition of DTR the modem performs an orderly clear down of the call and returns to the command state Automatic an
13. modem set up as DCE in RS 232 specifications has been designed to take advantage of the more useful CDMA cellular network protocols such as 1xRTT and in the case of the Verizon carrier DMU The modem also supports applications that employ a legacy v 250 v 25ter AT Hayes compatible modem interface Typically these legacy applications do not support the PPP and TCP IP transport utilized by the digital cellular networks but the modem is equipped to provide these protocols if the need arises Internally the modem is segregated into two major subcomponents First the digital cellular module which generates the Radio Frequency RF signal is used to provide connectivity to the cellular network The second major subcomponent comes in the form of an onboard RISC microprocessor which bridges the gap between your DTE communications terminal and the digital cellular module The modem s firmware processes the v 250 AT commands and other data before it is sent to the digital cellular module Any v 250 commands that the modems do not process internally may optionally be passed to the digital cellular module in order to access cellular network specific features This provides a high level of customization for use in packet data services Please reference the AT LCPAST section 6 20 command for more information on this feature Additionally the device can be configured for use as standard circuit switched cellular data modem In this mode the Intel
14. problems connecting to the cellular network you can verify if the issue is between the computer and the modem or between the modem and the cellular network To test this open your terminal emulation software as described in the Using Terminal Emulation Software To Talk To The Modem section 3 0 above Once the modem is ready to accept commands type AT amp V and press enter The modem should respond with several lines of configuration information If you receive the lines of code then your computer and the modem are properly communicating To test the link between your modem and the cellular network type ATDT lt phone number to call gt This command will perform a circuit switched call similar to the type a standard home phone or modem would make If the modem is communicating with the cellular network then you should connect to the phone number specified If you are properly communicating with the modem using the steps above and still cannot connect through the cellular network here are a few items to check 1 Call the phone number of the modem If the phone number is not active the cellular service will inform you of this 2 Contact your cellular provider and make certain that the Electronic Serial Number ESN of the modem is active in their system 3 Check the signal strength reaching the modem using the following command AT CSQ See also the FAQ for more information on No Carrier issues 4 Attempt to relocate the modem and or a
15. reconnect using the new data rate Refer to the Frequently Asked Questions section 11 0 for more information pertaining to the AT IPR command e Make certain the serial cable is firmly connected to an enabled COM port with no hardware resource conflicts Make sure that you have properly added the Standard 19200 bps Modem to your system using the Setting Up Your Modem section 2 2 above It is necessary to make certain that all COM port settings for the 19200 bps modem driver have been adjusted to 115200 bps speed Also check to see if you have an infrared IR port assigned to your modem s COM port Disable it if you are not using this function Often an IR port can interfere with the COM port even after you successfully connect Device Manager may indicate that there is no conflict between the two but disabling the IR port may still help e If your system s COM port appears to be locked you may have to shut down and reboot your system e Do not use Disable Call Waiting commonly referred to as 70 when configuring Dialing Properties e Make certain that you are using the proper RS 232 serial cable For most applications you must use a straight through RS 232 serial cable For certain types of equipment you may be required to use a null modem cable For more information on this refer to the FAQ section 11 11 titled When Do I Need A Null Modem Cable 5 2 Diagnosing COM Port Problems Using Hyperterminal If you are experiencing
16. section describes in detail the exterior dimensions of the CDM 820s CDM 820se and how to utilize the mounting flanges to secure the modem to any surface which can be drilled for such a purpose All of the drawings below are the approximate actual size The drawings may be used as layout reference but it is advised that a physical comparison be made to the modem before proceeding with the mounting process 16 1 End Cap Frontal Views The first drawing listed below shows the front side of the modem The six holes illustrated are as follows left to right 1 GPS Antenna SMA Connector 2 Amber Carrier Detect DCD 3 Red Transmit Receive Tx Rx LED 4 Green Received Signal Strength Indicator RSSI LED 5 DB 9 Serial Connector 6 Data SMS Antenna SMA Connector The following drawing depicts the rear side of the modem The rectangle on the left side is the location of the 10 Base T RJ 45 Ethernet Jack connector Note that this connector is supplied on the CDM 820se only This connector does not exist on the CDM 820s Located on the right side is the Power LED and the DC power supply connector 16 2 End Cap Overhead amp Profile Views The next two drawings show the overhead and profile views of the end cap These drawings show the mounting feet and the mounting hole diameter of 0 120 0 750 0 120 3 090 This profile view of the end cap shows the mounting feet extending beneath the body of the modem by a distance of 0 040
17. the modem is not communicating with a remote station and is ready to accept v 250 commands Data from the local DTE are treated as command lines and processed by the modem with responses echoing back to the local DTE The modem enters this state upon power up and when a call is disconnected Online Command State In Online Command State the modem is communicating with a remote station but treats data from the local DTE as command lines and sends responses back to the local DTE Data received from the remote station during Online Command State is buffered in the modem until Online Data State is once again entered by a command from the DTE Data previously transmitted by the local DTE and buffered in the modem will be sent from the buffer to the remote station during Online Command State Online Command State may be entered from Online Data State through the use of the escape sequence or via change of DTR state as configured by the amp D command Online Data State In Online Data State the modem is communicating with a remote station Data signals from the DTE are treated as data and transmitted to the remote station Data received from the remote station are delivered to the DTE Data and control signals are monitored by the modem to detect events such as loss of the remote connection and DTE requests for disconnection or switching to Online Command State Online Data State is entered by successful completion of a command to originate
18. 2 165 214 Address assigned to the Antenna Ptp 66 174 168 4 Mask 255 255 255 255 DNS1 66 174 3 7 DNS2 66 174 6 7 9 5 AT LCPROX Define A New Proxy The AT LCPROX command is used to configure the CDM 820se s onboard microprocessor to function as a TCP UDP GRE proxy Note that this functionality is only available on the CDM 820se This is a custom designed proxy that resides in layer 4 of the OSI networking model Please refer to the examples at the end of this section for more information on how to set up the proxy for your needs How It Works The command line arguments for AT LCPROX are as follows AT 4 LCPROX lt id gt lt type gt lt count gt lt listenport gt lt remoteport gt lt remoteaddress gt The first argument lt d gt specifies the proxy configuration number This setting can be thought of as a filename under which the proxy configuration is stored in the modem s memory Each separate proxy line must have a unique identification If you create a proxy configuration with the same lt id gt as a pre existing proxy the old proxy line will be erased and overwritten by the new configuration The second argument lt fype gt tells the modem how to handle the data it receives The four possible lt type gt are as follows 1 TCP Transport 2 UDP Transport 3 GRE Local End 4 GRE Remote End The lt type gt argument is used to configure the proxy to operate in TCP or UDP mode 1 and 2 respectively As far as configur
19. Commands may be edited using the backspace key but backspace will not delete the AT attention command at the beginning of the command line 12 3 Result Codes After issuing a command a result code will typically be displayed on the screen to inform you if the command was successful unsuccessful improperly formatted etc When in the command mode eight possible result codes may be returned The result codes can be set to display as either digits or words by accessing the Verbose command The digit code is returned when the Verbose mode is OFF ATVO the word code is returned when Verbose is ON ATV1 See the Basic AT Parameters Table section 12 4 for more information on Verbose Extended result codes may also be returned The result codes are listed in the following table Result Codes Table Digit Verbose Description 0 OK Command executed without errors 1 CONNECT Connected to remote modem 2 RING Incoming Call 3 NO CARRIER Carrier from remote modem lost or never present 4 ERROR Error in the command line 6 NO DIAL TONE No dial tone detected within time out period 7 BUSY Busy signal detected 8 NOANSWER Five seconds of silence not detected after ring back when dial modifier is used 12 4 Basic AT Parameters These commands control the basic configuration of the modem The parameters can only be read back by the AT amp V command when in command state The following table shows the command format Basic AT Parameters Table Param
20. DTR Creuse 14 0 9 ER RTS Configuratii een da 15 MOSES DSR C nfi guration EE EE 16 60 10 40 CTS Configuration EE 16 OL aC DEDO COMISIONES 16 612 KN REC oh UA ee ee A AS 17 6 13 AT LCCROK Send OK Response To lt CR gt rrrnrenvrnrenrvnrernvnrersvnrernnsrerreserrsesennsee 17 6 14 AT LCNOLF Disable Sending lt LF gt In Response Mesanges 17 6 15 AT LCNOER Disable ERROR Response To Unknown Commande 17 6 16 AT LCPAST Pass Unknown v 250 Commands To The Cellular Module 18 7 0 Session Management Commands ssssssssssesssesesseessseesseesserssetesseetsstesseesseesseeessseesseese 18 7 1 AT LCPREL Profile Configuration vecinita triana edades 18 2 ADA EHNEN EE 19 7 3 AT LCGASC Enable IxRTT Auto Session Connect 20 74 AT LCGRST End Cellular SESSION iissicssscastessstentievsctancsuscsoesaeceonnvessaveavedadaosnaetents 20 TJAT ECGETPH Pine Reset Ut eiii 20 8 0 RS 232 PAD Configuration Commande 21 8 1 AT LCICTO Inter Character E 21 8 2 AT LCIDCT Idle Disconnect Ti Ad 22 8 3 AT LCSEST Session Disconnect Tumer 23 90 Eth rn t Commands tinta ondo 23 9 1 AT LCETHI Set The Local Ethernet IP is essessresersresensvesersesesssesssesesnsesesnre 23 9 2 AT LCETHN Set The Local Ethernet Netmask AAA 23 9 3 AT LCETHG Set The TCP IP Gate Wa 25 9 4 AT LCETHR Print The Route Table sssnoroonnornonnvrrennensennresennvesennvesvnnvesennvsvene 24 9 5 AT LCPPPP Print out the Ethernet Intormatnon 24 9 5 AT LCPROX Define A New Proxy esse 24 10 0
21. as indicated by the 1 650 end cap height The modem case is only 1 610 high without the end caps attached 1 650 0 120 0 540 16 3 Mounting Flange Guide The following depiction illustrates the mounting footprint of the CDM 820s CDM 820se The mounting flange holes located on each end of the modem are indicated by the intersections of the four lines 0 750 17 0 Copyright Notice CDM 820s and CDM 820se are a registered trademarks of Land Cellular Corporation Windows Windows 98 Me NT 2000 amp XP XP Professional and DiaFUp Networking are registered trademarks of Microsoft Corporation HyperTerminal is a trademark of Hilgraeve Inc ProComm is a registered trademark of DataStorm Technologies Inc All other marks are held by their respective owners 18 0 Limited Warranty Land Cellular the Company warrants that it s product shall be free from defects in materials and workmanship for a period of one year from the date of shipment Land Cellular warrants any software sold alone or with any of its products shall be free from defects according to the Company s specification for a period of sixty 60 days from the date of shipment During the warranty period if a customer experiences difficulties and is unable to resolve the problem by modem with Company s Technical Support the Company will issue a Return Materials Authorization RMA number Following the receipt of a RMA number the customer is responsible for return
22. ation is concerned TCP and UDP data transmission are both configured in the same manner Only the lt ype gt is altered to specify TCP or UDP The modem is placed into GRE mode by configuring the first proxy line to use 1723 as the listenport and the remoteport and by setting the second and third proxy lines for type 3 and 4 and port 0 See the examples below for more information and practical application In GRE mode the proxy first sets up a TCP connection to the remoteaddress and then lays a GRE tunnel over the TCP pipe This type of connection is very useful in that it will allow all ports to pass through to and from the remote IP as long as the remote system supports GRE The third argument lt count gt is used to tell the modem how many concurrent sessions to allow for that particular proxy connection The fourth argument lt istenport gt is the port on which the modem listens for incoming connections for all transport methods TCP UDP GRE This port receives all data before it is processed by the proxy Regardless of the direction of the data traffic flow either inbound or outbound the modem always monitors listenport for any data to be routed If the modem encounters traffic on the specified listenport the proxy is activated and begins to route the data as specified in the proxy command line The fifth argument lt emoteport gt is the forwarding port that is after data has been processed by the proxy it is routed from list
23. ble with the modem Default 0 Storage amp W Command Command Values AT LCNOER 0 Send ERROR response to unknown commands AT LCNOER 1 Send OK response to unknown commands 6 16 AT LCPAST Pass Unknown v 250 Commands To The Cellular Module Enables or disables pass through of v 250 commands that the Intelligent Modem s v 250 command interpreter does not recognize i e any command not specifically listed in this document to the digital cellular module Default 0 Storage SW Command values AT LCPAST 0 Return ERROR or OK to unknown commands as per the AT LCNOER setting AT LCPAST 1 Forwards only unknown commands to the internal RF module All recognized AT commands are executed by the RISC processor AT LCPAST 2 Pipe all commands to the internal RF module utilizing UART 1 AT LCPAST 3 Pipe all commands to the internal RF module utilizing UART 2 7 0 Session Management Commands This Session Management section details the commands designed to facilitate connecting via the cellular network In many cases use of these commands is not required but will allow much more flexibility especially when connecting via 1xRTT 7 1 AT LCPRFL Profile Configuration The AT PRFL command allows one to configure up to three different dialing profiles with such parameters as Packet Data Simple IP Mobile IP Username Password and TCP UDP connectivity to name a few There are a total of ten command line arguments denoted below as argumen
24. checking beyond octet validation Four octets of 0 255 for any of the ethernet address assignments E g If you set the netmask to an invalid address the modem will accept it but may unable to transfer via the RJ45 port 9 1 AT LCETHI Set The Local Ethernet IP This command will set the local IP of the ethernet port Default 192 168 1 222 Storage SW Command Values AT LCETHI lt IP Address gt Sets the ethernet IP AT LCETHI Queries the current ethernet IP 9 2 AT LCETHN Set The Local Ethernet Netmask This command will set the netmask of the ethernet jack Default 255 255 255 0 Storage SW Command Values AT LCETHN lt Netmask gt Sets the ethernet netmask AT LCETHN Queries the Ethernet netmask 9 3 AT LCETHG Set The TCP IP Gateway This command will set the current TCP IP gateway of the modem Default 0 0 0 0 Storage SW Command Values AT LCETHG lt Gateway IP gt Sets the TCP IP gateway address AT LCETHG Queries the TCP IP gateway address 9 4 AT LCETHR Print The Route Table This command will print a copy of the modem s routing table Default 0 0 0 0 Storage N A Command Values AT LCETHR Prints the modem s route table 9 5 AT LCPPPP Print out the Ethernet Information This command will print a copy of the modem s routing table Default 0 0 0 0 Storage N A Command Values AT LCPPPP Prints the Internet information assigned to the antenna by the carrier See example below IP 69 8
25. clicking OK the Connect To box will appear In the Connect Using box you may see several listings such as COM1 COM2 any modems that are currently installed in the computer Do not attempt to connect to the modem via the modem Instead select COM1 or whatever port you have the modem connected to from the drop down list After clicking OK you should be prompted with a Port Settings dialog box Make certain that the Bits per Second option is set to 57600 The Data bits should be listed as 8 Parity None Stop Bits 1 and Flow Control Hardware Click Apply and OK By default the modem s Flow Control protocol is Hardware but this can be adjusted with the AT IFC command Please see the sections entitled Frequently Asked Questions and Extended AT Configurations Command Table for more detailed information pertaining to this and other communications commands 3 1 Serial Connection Reference Table Below is a quick reference of the default communication parameters of the modem Bits Per Second 57600 Data Bits 8 Parity None Stop Bits 1 Flow Control Hardware The Hyperterminal connection should now be active As a test we ll send the standard attention code to the modem Type the command AT and press enter If properly interfaced with the modem you should receive an OK reply If not make certain that the modem s power LED is illuminated and the bit rate of your terminal emulation software is set to 57600 For most
26. ds 8 1 AT LCICTO Inter Character Timer This command is used to configure the Inter Character timeout used by the PAD service when assembling packets for transmission The PAD will send a packet of data every time the buffer is full 512 bytes or if the serial line is idle for longer than the time specified by this command Default 50 Storage SW Command Values AT LCICTO lt timeout gt Where lt timeout gt is a number between O and 65535 milliseconds 8 2 AT LCIDCT Idle Disconnect Timer This command is used to configure the Idle Disconnect timeout used by the PAD service Should no data be sent or received for the specified period of time the connection will be closed and the usual disconnect response generated A value of 0 disables the use of the idle disconnect timer Default 50 Storage SW Command Values AT LCIDCT lt timeout gt Where lt timeout gt is a number between O and 65535 seconds 8 3 AT LCSEST Session Disconnect Timer This command is used to configure the Session Disconnect timeout used by the PAD service Session will be unconditionally closed and the usual disconnect response generated at the expiration of this timer A value of 0 disables the Session Disconnect Timer Default 0 Storage SW Command Values AT LCSEST lt timeout gt Where lt timeout gt is a number between O and 65535 seconds 9 0 Ethernet Commands The commands below are used to configure the RJ45 Ethernet port There is no error
27. e DTE The valid numeric variables for the IFC command are as follows 0 No Flow Control 1 Xon Xoff 2 Hardware By default the modem is set up as AT IFC 2 2 to allow hardware flow control in both directions 11 7 When Do Need A Null Modem Cable The Land Cellular modem s RS 232 serial port is wired to act as the Data Communication Equipment DCE while a typical home computer or laptop system is designated as the Data Terminal Equipment DTE As long as you are connecting two different devices DCE to DTE you must use a straight through serial cable However if you are connecting two like devices DTE to DTE or DCE to DCE it is necessary to use a Null Modem Cable Use the Null Modem cable to attach the modem to PDAs and handheld computers Desktop and notebook computers require a straight through cable 11 8 Do Need A Crossover Or Patch Ethernet Cable The CDM 820se s ethernet port is wired to look exactly like the ethernet port on the back of a computer If you are plugging into a like device something wired as a computer then you will need a crossover cable If you are plugging into a port that is not wired as a computer but looks like the LAN port on a switch or router then use a patch cable 11 9 What Is Dormancy The CDMA packet data service supports a dormancy feature When no data is being transferred on the air link for a period of time the traffic channel is released However PPP states and the IP address are
28. e reliable connections than analog technology You can expect to connect at 14 4Kbps minimum speed but speeds could very well be higher The speed at which you may be able to connect is contingent upon many factors such as your location carrier proximity to the base station and other factors CDMA 3G 1x systems support data rates of up to 153 6Kbps 11 3 How Do Perform An Over the Air Activation Of The Unit Access the modem via a terminal emulation package such as a PC running Hyperterminal Once connected to the modem enter AT CDV 22899 and wait several minutes Then power cycle the modem and perform a test For more information on configuring Hyperterminal and running tests please see the sections above entitled Using Terminal Emulation Software To Talk To The Modem section 3 0 and Diagnosing COM Port Problems Using Hyperterminal section 5 2 11 4 What AT Command Changes The Baud Rate Of The Modem AT IPR lt baud rate gt Valid rates are 300 1200 2400 4800 9600 14400 19200 38400 57600 115200 bps For example AT IPR 57600 11 5 What Is The AT Command To Check The Baud Rate AT IPR 11 6 What Is The AT Command To Change The Flow Control AT IFC lt DCE_by_DTE gt lt DTE_by_DCE gt Where lt DCE_by_DTE gt Specifies the method to be used by the DTE to control the flow of received data from the DCE lt DTE_by_DCE gt Specifies the method to be used by the DCE to control the flow of transmitted data from th
29. ed to remote host DCD always OFF DSR controlled via I O control feature 6 12 amp N RI Configuration This parameter determines how the modem controls the state of the Ring Indicator circuit Default SN1 Storage SW Command Values AT amp NO RI always ON AT amp NI1 RI tracks incoming ring pulse AT amp N2 RI always OFF AT amp N3 RI controlled via I O control feature AT amp N4 RI acts as watchdog output changes state once per second under normal conditions 6 13 AT LCCROK Send OK Response To lt CR gt Enables or disables sending of an OK response when the unit receives the lt CR gt carriage return character by itself Default 0 Storage amp W Command Command values AT LCCROK 0 Do not send OK in response to lt CR gt AT LCCROK 1 Send OK in response to lt CR gt 6 14 AT LCNOLF Disable Sending lt LF gt In Response Messages Enables or disables sending the lt LF gt line feed character in response messages Default 0 Storage amp W Command Command values AT LCNOLF 0 Send lt LF gt in response messages AT LCNOLF 1 Do not send lt LF gt in response messages 6 15 AT LCNOER Disable ERROR Response To Unknown Commands Enables or disables sending an ERROR response to unknown commands When the ERROR response is disabled the modem will instead send an OK response to unknown commands This may allow the modem to be used in applications where the host issues AT commands that would otherwise be incompati
30. enport to remoteport All data intercepted on listenport is forwarded out of the modem on remoteport Even if the data is sent out over the ethernet connection to a local non routable IP address it is considered remote because that IP address is external to the modem The only IP considered local to the modem is the IP of the modem s ethernet jack Please refer to the AT LCETHI command The last argument lt remoteaddress gt is the remote host to send data to During an outbound request where data is sent from the modem to a remote system on the internet remoteaddress is the destination point Any data entering the modem s ethernet jack on the listenport will be forwarded to the remoteaddress on the remoteport The same is true for incoming data If traffic is seen inbound from the cellular side on the listenport the proxy will route it through the ethernet jack to the remoteaddress on the remoteport Keep in mind that the IP is remote only as far as the modem is concerned A private non routable IP is still considered remote as long as it is physically outside the modem It is for this reason that you can set remoteport as a local address such as 192 168 1 35 and the modem will accept incoming data from the cellular side and forward it through the Ethernet jack to the remoteport Default No Saved Proxies Storage N A Command Values AT LCPROX lt parameters listed below gt lt id gt lt type gt lt count gt lt listenport gt l
31. eter Description EO Do not echo commands in command state or in online state El Echo commands in command state or in online state Q0 Return result codes Ql Do not return result codes VO Display result codes as numbers V1 Display result codes as words X1 Enable additional result code CONNECT lt rate gt Disable dial tone and busy detection X2 Enable additional result codes CONNECT lt rate gt and NO DIALTONE Disable busy detection Enable dialtone detection X3 Enable additional result codes CONNECT lt rate gt and BUSY Enable busy detection Disable diaktone detection X4 Enable additional result codes CONNECT lt rate gt BUSY and NO DIALTONE Enable busy and dialtone detection ZO Reset to default configuration amp FO Effect is implementation dependent Same behavior as Z amp V Dump configuration parameters For async data fax settings the dialtone detection settings do not apply Eactory default settings 12 5 Extended Commands The extended commands use the extended syntax To set a value using an extended command use the WRITE command AT CMD xxx where CMD is the command and xxx is the value Some extended commands take more than one value For example the Write command for two values becomes AT CMD xxx yyy Some extended commands take characters strings as values instead of numbers In that case the syntax is AT CMD CharacterString Note that while spaces are ignored everywhere else s
32. for RSSI once every 5 seconds which causes the Tx Rx LED to blink briefly 2 0 Modem Setup Guide The following subsections will assist in configuring your modem to interface and operate with your data terminal 2 1 Getting Started 1 Ensure that terminal emulation software such as Hyperterminal or ProComm is installed on your system Hyperterminal is preinstalled in most versions of Microsoft Windows 2 Connect a serial cable from the RS 232 port on the modem to an enabled communications port on your system Please note that for most applications this must be a straight through serial cable and not a null modem cable See the FAQ section 11 0 for more information on when to use a Null Modem cable 3 The following modem setup applies for Windows 98 Me NT 2000 amp XP Due to the divergent graphical interfaces of these different operating systems there may or may not be an extra step to follow e g an additional procedure to open a program from the Start Menu This guide is optimized for Windows XP Professional 3 0 Using Terminal Emulation Software To Talk To The Modem You can access the modem through a terminal emulation program such as Hyperterminal which should already be installed in your version of Windows To launch Hyperterminal click on the Start Menu go to Programs gt Accessories gt Communications gt Hyperterminal If prompted you may name this connection TEST or give it any other appropriate name After
33. g string if the modem still will not place an outbound call you may have to enter the phone number into the modem before performing an Over the Air Provision Please see sections 5 3 through 5 6 5 0 Troubleshooting In this section you will find important information relating to the setup and diagnosis of your modem If you are having trouble communicating with the modem please read this Trouble shooting section and the Frequently Asked Questions section 11 0 in full If after reviewing these sections you are still having problems connecting call our Technical Support line at 954 430 5811 for more assistance Toll charges may apply 5 1 Helpful Hints e Only assign one device to any given COM port on your system e The Land Cellular CDM 820s and CDM 820se data modems have a default COM port speed of 57600 bps This is the data rate at which your modem connects to your computer The modem s COM port speed can be lowered to 300 bps or raised to 115200 bps As this setting adjusts the communications speed that the modem utilizes to speak to the computer altering this parameter must be performed in a very specific way Otherwise you may lose communication with the modem To alter the default speed of 57600 bps first connect via your terminal emulation software settings 57600 bps 8 N 1 Hardware Now you may issue the AT IPR command to query or change the default speed After adjusting the port speed disconnect from the modem and
34. he modem will detect that the session dropped and will immediately reconnect To fully disconnect set AT LCGASC 0 and then issue the AT LCGRST command 7 5 AT LCLTPH Ping Reset Utility This command will set the modem to transmit controlled ping packets to a user specified host at a user defined periodic rate If the primary ping attempt fails a backup secondary ping timer will initiate at the accelerated ping time rate If secondary ping timer fails all of its attempts as indicated in the Attempt Count argument the modem will record the incident into NV memory and then reboot the modem If a ping is successful it will fall back to the primary ping rate Default 0 0 0 0 0 0 0 Storage Automatic Command values AT LCLTPH lt parameters listed below gt Defines an auto ping as per settings below AT LCLTPH Queries all current profile settings Argument Number Type Parameters 1 IP Address To Ping IP or Domain Name 2 Inter Ping Timer Primary Ping Timer Time In Seconds Between Ping Attempts 3 Accelerated Ping Timer Secondary Ping Timer Time In Seconds Between Ping Attempts 4 Attempt Count Number of times the current ping timer either Primary or Secondary is allowed to fail before falling back to the next timer or to a reboot 5 Failure Count NOTE Not A Command Line Variable This argument is only available when querying the Ping Reset Utility This return is a non volatile count of the number of times the modem has
35. ill set the modem to perform an outbound NAT to the IP and port specified To activate the proxy for outbound traffic simply access the ethernet port from your computer To further illustrate the IP 207 234 195 185 is the www land cellular com website If the modem is configured as above and is in the Online State or the Online Command State you could access the modem by opening a web browser and pointing it to http 192 168 1 222 which is the default setting for the ethernet port When the modem sees an incoming packet it examines what port it is going to When it sees port 80 which is the port on which most standard HTTP web traffic occurs it looks in the proxy for instructions where to send the packet The proxy tells the modem to forward the packet to 207 234 195 185 on port 80 The modem will transmit the packet from the antenna IP to the server and establish a two way TCP connection When the server responds the data is automatically forwarded to the ethernet port Example 3 GRE Connections AT LCPROX 1 1 1 1723 1723 66 139 73 113 AT LCPROX 2 3 1 0 0 192 168 1 35 AT LCPROX 3 4 1 0 0 66 139 73 113 To establish a GRE tunnel you must specify an IP to go to in the same method that you would for a standard TCP connection as indicated in Example 2 above The only difference is that the port will always be 1723 This tells the modem that you are about to establish a GRE tunnel to the IP specified The next two proxy lines instruc
36. ing the product to the Company freight prepaid Upon verification of the warranty the Company will at its option repair or replace the product in question and return it by prepaid freight This warranty does not cover any work or services at the customer s site Any software revisions required hereunder cover supply of distribution media only The warranty does not cover or include any installation that may be required Company shall have no obligation to make repairs or to cause replacement required through normal wear and tear necessitated in whole or in part by catastrophe fault or negligence of the user improper or unauthorized use of the Product or use of the Product in such a manner for which it was not designed or by causes external to the Product such as but not limited to improper power supplies or failure due to extreme temperatures The information recommendation description and safety notations in this or other documents supplied by Company are based on general industry experience and judgment with respect to such hardware and software This information should not be considered to be all inclusive or covering all contingencies In no event will Land Cellular be responsible to the user in contract in tort including negligence strict liability or otherwise for any special indirect incidental or consequential damage or loss of equipment plant or power system cost of capital loss of profit The above represents the e
37. ligent Modem acts as most any other land line modems This mode allows compatibility with cellular networks which do not provide CDMA packet data access 1 1 Overview AT commands issued from your application are used to control and configure the modem Through compatibility with the standard v 250 AT command set these commands can be used to control the basic functionality of the modem In addition the modem extends the v 250 command with a set of Land Cellular proprietary commands that can be used to configure and utilize unique features without interfering with operation of the basic v 250 interface 1 2 Modem Capabilities The CDMA RF Module is tri mode enabled That is it supports operations in AMPS 800MHz cellular CDMA 800MHz cellular and CDMA 1900MHz PCS bands however the modem as a whole only supports CDMA 800MHz cellular and CDMA 1900MHz PCS bands The modem has three operational states Command State Online State Online Command State When first powered on the modem is in the Command State where it is able to accept industry standard AT commands When instructed to dial out or to answer a data call the phone is in the Online State The Quick Reference Guide section 14 0 has more information on how to enter these operational modes 1 3 Operating States In this manual reference is made to Command State Online Command State and Online Data State these states are defined as follows Command State In Command State
38. m encapsulates the packet according to GRE specifications and performs Network Address Translation sending it out the antenna IP to whatever IP you specified in the first and third proxy lines 10 0 Miscellaneous System And Diagnostic Commands This section details the commands used to query the modem s configuration and available resources and configure the modem to automatically reboot at specified intervals 10 1 AT LCCOPT Configuration Options This command can be used to show or set a number of modem specific options The command expects returns an integer value between 0 and 255 which represents a bitmap of various options Default 2 Storage Automatic Command Values AT LCCOPT lt bitmap gt Where the bits in lt bitmap gt are defined as follows 1 Banner Off Do not show power on welcome message at local RS 232 port 2 Enable Debug Show 1xRTT connection progress debug messages at local RS 232 port 4 Disable Debug Completely disables the modem s screen dump debug text during a 1xRTT connection 8 Reserved 16 Reserved 32 Reserved 64 Reserved 128 Reserved 10 2 AT LCSHWT Show Running Threads This command will issue a list of all threads currently executing in the modem Default 0 Storage NA Command Values AT LCSHWT Show all running threads 10 3 AT LCSHWM Show Free Memory This command can be used to show the amount of free buffer RAM on the modem out of a total of 32K Default 0 Storage NA
39. munications soreronnrnronnrnvrnnrnvenvrnsennnnrennnnrernnnrerrnesrrrnserrresennn 37 13 1 RS 232 Serial Port Integration Parameters oooonncccnoncccnoncccnoncnonnnncnonnncnnnncnonnncnnnnnos 37 13 2 RJ 45 Ethernet Port Integration Parameters oooonocononcconcnnncncnoncnononnnnnonn nono ncnonennnos 38 14 0 Quick Reference Guide 38 15 0 CDMA Wireless Data Modem CDM 820s CDM 820se Specifications 40 16 0 CDM 820s CDM 820se Mechanical Specifications oocoonnocccnoncccnoncnononcnonnnnnonnnnnnnno 41 16 1 End Cap Frontal TEE Ae ee Een 41 16 2 End Cap Overhead amp Profile Views 42 163 Nome Gude 42 17 0 Copyright Nor ies Du e ds A 43 EA Warranty EE 44 190 EL EE 45 19 1 Addressed Serial Protocol Spectfieaton eee ceescecesscecesceceeeeecseeeeceeeeeesseeeesaes 45 1 0 Introduction Thank you for purchasing the Land Cellular Intelligent Modem This guide makes reference to the CDM 820s and CDM 820se modems collectively as the modem These devices are CDMA2000 3G compatible and provide you with the convenience of a wireless connection from anywhere CDMA cellular services are available We are certain that you will receive many years of outstanding performance from our product This guide will assist you in the set up and use of your new CDMA modem Follow the instructions below to install all necessary software drivers and set up your computer or data terminal to send and receive information via the cellular network The
40. ntenna to receive a stronger signal 5 Make certain that the modem has been provisioned by the cellular network To provision the unit issue this command AT CDV 22899 For more information see the How Do I Perform An Over the Air Activation Of The Unit section 11 3 in the FAQ NOTE Running diagnostics from Modem Properties may not work if the computer attempts to communicate with the modem at an improper baud rate 5 3 Altering The Modem s Cellular Parameters If you have subscribed to a cellular provider using the serial number printed on the case of the modem but still cannot provision the unit you may need to program the Mobile Identification Number MIN Mobile Country Code MCC and or the Mobile Network Code MNC The next five sub sections explain how to change these parameters If you simply need to enter the phone number MIN then follow these steps below AT LCPAST 1 AT KWMODE 1 AT KWSPC 000000 AT KWDIR 10 Digit Phone Number From Cellular Carrier Without Hyphens AT KWMODE 2 AT CDV 22899 NOTE The commands to alter the MIN MCC and MNC communicate with the RF module directly and as such require that the AT LCPAST 1 command be issued before proceeding See the sections below for more information on altering the MIN MCC and MNC 5 4 Entering Offline Digital Mode In order to change the MIN MCC or the MNC you must first change the operational mode to Offline Digital by typing AT KWMODE 1 After changing thi
41. ntire obligation of the Company and understanding between the parties There are no other understandings agreements representations or warranties express or implied including warranties of merchantability or fitness for a particular purpose 19 0 Appendix Below is a brief description of the Addressed Serial Protocol specification Please see section 7 1 AT LCPRFL Profile Configuration for more information on how the to enable Addressed Serial Protocol 19 1 Addressed Serial Protocol Specification Land Cellular has implemented Addressed Serial Protocol to allow a master station to communicate with a number of remote stations via 1xRTT During network activity the master station must be able to identify individual remote stations sending data to the master and in turn be able to direct transmissions to a specific remote station In order to provide this addressibility the following protocol is defined All data will be sent encapsulated in HLDC like frames with the IP address of the remote station in standard network byte order as the first 4 information bytes of each frame Application data starts at the 5th byte of the information field of each frame Frame Format A summary of the HDLC like frame structure is shown below This figure does not include bits inserted for synchronization such as start and stop bits for asynchronous links nor any bits or octets inserted for transparency The fields are transmitted from left to
42. o the service provider OTAPA occurs when the network initiates a call to the modem and programs it without any user intervention OTAPA is typically used when the service provider decides to update information on many cellular devices at the same time After the modem s serial number is authorized for use with a cellular provider you may activate the modem over the cellular network To perform Over the Air Service Provisioning type AT CDV 22899 After issuing the AT CDV 22899 command your cellular provider will program the proper roaming parameters into the modem Please allow approximately four minutes for this to occur After waiting the appropriate amount of time for the cellular network to program the modem perform a power cycle by removing the DC power supply plug and reconnecting it To test that OTASP has taken place type AT CDV lt phone number to call gt from your terminal emulation software Example AT CDV9544305811 If this is successful the modem will place an outbound call through the cellular network to the phone number specified To make a circuit switched connection type this command ATD lt phone number to call gt If the modem did not properly dial the phone number you specified here are a few things to check First make certain that you are not including any hyphens or spaces in the ATD dialing string For example you should be entering ATD9544305811 After verifying that you have properly entered the dialin
43. or answer a call by automatically answering a call by a DTE command to return to Online Data State from Online Command State or in response to the DTR signal as configured by the amp D command 1 4 The Types Of Data Calls This chapter describes some of the features and capabilities of the modem Section 2 0 explains how to set up and test your modem using Hyperterminal Understanding these types of data calls may help you to integrate the module with other systems as well The module can make several types of data calls Async Data Asynchronous Mode Transfers raw data between two computers 1x Packet Data QuickNet Connect QNC QNC is an ISP option which allows access to the internet Verizon Dynamic Mobile IP Key Update DMU This data service is proprietary to Verizon The DMU option is a customer account provisioning in the Verizon network and is a more powerful subset of 1xRTT packet data 1 5 Speeds Data Rate From Your Computer To The Modem The Land Cellular CDM series data modems are capable of sending and receiving data at high speeds The CDM820 series modems have a default RS 232 speed of 57600bps Your COM port must be configured to operate at this rate in order to properly communicate with the modem The modem s COM port speed can be adjusted with the AT IPR command Please refer to the FAQ for more information on changing the COM port speed The modem s COM port speed is variable from 300bps to 115 2Kbps 1 6 Status
44. paces are significant inside the quotation marks To read back a value use the READ command AT CMD To test if a particular command is supported along with the range of values it supports use the TEST command AT CMD An extended command must be terminated with a semicolon if another command follows it in the same command line The following table describes the extended AT configuration commands Extended AT Configuration Commands Table Command Description IFC TE2 MT2 Local Flow Control This extended format compound parameter is used to control the operation of local flow control between the TE2 and the MT2 The format is AT IFC lt DCE_by_DTE gt lt DTE_by_DCE gt Where lt DCE_by_DTE gt Specifies the method to be used by the DTE to control the flow of received data from the DCE lt DTE_by_DCE gt Specifies the method to be used by the DCE to control the flow of transmitted data from the DTE The valid numeric variables for the IFC command are as follows 0 No Flow Control 1 Xon Xoff Hardware By default the modem is set up as AT IFC 2 2 to allow hardware flow control in both directions IPR Fixed Rm Rate This numeric extended format parameter specifies the data rate at which the MT2 will accept commands in addition to 1200bps or 9600bps as required in EIA TIA 602 It may be used to select operation at rates at which the MT2 is not capable of automatically detecting the data rate being used by the TE2
45. retained To the end user the network connection will remain up but the packet data call timer will stop This saves air time for the user as well as providing for better use of the CDMA system The modem can initiate dormancy if it is configured with the AT CTA command before origination of the packet call Alternatively the base station can also initiate dormancy 11 10 Can Change The Phone Number Of The Modem You can change the MIN by following the commands located in sections 5 3 through 5 6 11 11 Does The Modem Require Any Special Drivers No drivers are required for normal operation 11 12 Is There A Graphical User Interface GUI For The Modem Currently there is no GUI All commands can be accessed via terminal emulation software 12 0 AT Command Reference All modem functions are controlled using the same industry standard AT commands that are used to control landline modems A knowledge of these commands is not required by most users but are provided here as a reference 12 1 The Types Of Commands 1 Basic AT Parameters 3 Basic Action Commands 4 Extended AT Configuration Commands 5 Cellular AT Commands 6 Land Cellular Proprietary AT Commands The parameters set by the various AT commands in this appendix are applied to all subsequent calls and will be used each time you place a call As such your custom settings will be available until you power down the modem These settings are lost upon power down New revision
46. right Flag Protocol Information Flag 01111110 8 16 bits H 01111110 The standard HDLC Address Control and FCS fields are not used or present Flag Field The Flag Sequence indicates the beginning or end of a frame and is used for frame synchronization The bit stream is examined for the binary sequence 01111110 hexadecimal 0x7E Transparency An octet stuffing procedure is used The Control Escape octet is defined as binary 01111101 hexadecimal 0x7D most significant bit first Each Flag Sequence and Control Escape octet is replaced by a two octet sequence consisting of the Control Escape octet followed by the original octet XOR d with hexadecimal 0x20 Escaped data is transmitted on the link as follows Ox7E is encoded as 0x7D OxSE Flag Sequence 0x7D is encoded as 0x7D 0x5D Control Escape Protocol Field The Protocol field is consistent with the ISO 3309 HDLC extension mechanism for Address fields All Protocols are assigned such that the least significant bit of the most significant octet equals 0 and the least significant bit of the least significant octet equals 1 Presently the only defined protocol type is 0x99 Addressed Serial Data i e All frames start with Ox7E 0x99 Information Field The information field is structured as follows Remote Address Application Data 32 Bits Where the remote address contains the IP address of the remote device in network byte order
47. s of the modem s firmware implements the ability to store these commands even through a power cycle Please note any attached information relating to these firmware revisions The modem also gives you automatic support of all AT commands that are unknown to the modem but are supported by your cellular carrier Since the carrier may charge you for the air time used for this connection the modem s autoconnect ability is disabled by default Issue the AT CXT 1 command to enable this mode 12 2 Command Line Syntax A command line consists of the attention code followed by one or more commands and terminated by an end of line code The attention code is the character pair AT or at By default the end of line character is the ASCII CR character decimal 13 unless it is changed by the S3 command The ASCII CR character is equivalent to one keystroke of the ENTER key Refer to the S Registers section 12 5 for more information on this command Spaces are ignored unless within quotes and may be inserted between arguments within the AT command line to make it more legible if desired The Basic and S Register commands may follow each other on the command line without any separating delimiters The Extended Format Commands those beginning with a ott character must be terminated with a semicolon if they are followed by another man command on the same line The character is not required after the last command on the line
48. s or any other parameter you may query the modem by typing a in place of the For example to confirm that you are in the Offline Digital operational mode you would type AT KWMODE 5 5 Unlocking The Service Programming Code SPC As a safety precaution to keep unauthorized users from gaining access to the device the modem carries a Service Programming Code SPC The default SPC is 000000 Without entering this code you cannot alter the modem s configuration To unlock the modem and allow write access enter the SPC with this command AT KWSPC 000000 5 6 Entering The Mobile Identification Number MIN You may now enter the MIN DIR given to you by your CDMA provider by typing AT KWDIR lt 10 digit phone number provided by CDMA carrier gt NOTE Enter the full 10 digit phone number without spaces or hyphens E g AT KWDIR 9544305811 5 7 Entering The Mobile Country Code MCC It is only necessary to enter the Mobile Country Code MCC and Mobile Network Code MNC if the modem is not already programmed for operation in your area If required these codes are available from your CDMA provider To change the MCC type AT KWMCC lt 3 digit MCC gt 5 8 Entering The Mobile Network Code MNC To alter the MNC type AT KWMNC lt 2 digit MNC gt After configuring your modem you must issue the command AT KWMODE 2 This resets the modem and writes your configuration changes to non volatile memory Your modem is now programmed for opera
49. swer is disabled while DTR remains off AT amp D4 The modem auto dials the default remote station as determined by AT LCPRFL upon an off to on transition of DTR and enters the Online Data State The modem ends the call and enters the command state upon an on to off transition of DTR AT amp D5 The modem auto dials the default remote station as determined by AT LCPRFL upon an on to off transition of DTR and enters the Online Data State The AT amp D6 AT amp D7 AT amp D8 6 8 amp R RTS Configuration modem ends the call and enters the command state upon an off to on transition of DTR Upon an on to off transition of DTR the modem performs an orderly clear down of any session and turns OFF the RF module Upon an off to on transition of DTR the modem turns ON the RF module and re establishes the radio session as determined by the AT LCGASC setting Upon an on to off transition of DTR the modem performs an orderly clear down of any session and turns OFF the RF module Upon an off to on transition of DTR the modem turns ON the RF module and re establishes the radio session Upon an on to off transition of DTR the modem performs an orderly clear down of any session and turns OFF the RF module Upon an off to on transition of DTR the modem turns ON the RF module and re establishes the radio session and auto dials the default remote station as determined by AT LCPRFL This parameter determines how the modem responds
50. system Z The mobile station is not registered SID 0 16383 The mobile station is registered with the system indicated 99999 The mobile station is not registered CSQ Query Received Signal Quality Returns the Signal Quality and Frame Error Rate as follows Signal Quality Measure lt SQM gt 0 31 Signal Quality Measurement See note 1 below 99 SQM is not known or is not detectable All other values are reserved Frame Error Rate lt FER gt 0 01 0 01 to less than 0 1 0 1 to less than 0 5 0 5 to less than 1 0 1 0 to less than 2 0 29 to less than 4 0 4 to less than 8 0 7 gt 8 0 99 FER is not known or is not detectable All other values are reserved Dub UN ra Gi Note 1 The exact meaning of the Signal Quality Measure lt SQM gt shall be manufacturer defined The lowest quality reported by SQM shall be defined as value 00 The highest quality reported by SQM shall be defined as value 31 13 0 Layer 1 Hardware Communications This section covers the basic Layer 1 protocols for hardware integration of the modem with your DTE Depicted below are the pinouts of the data communications ports of these two modems 13 1 RS 232 Serial Port Integration Parameters You can use the guide below to design serial cables to integrate the CDM 820s and CDM 820se into your systems Standard RS 232 DB 9 Pinout Pin Name Direction Description 1 CD Carrier Detect 2 RX Receive Data
51. t remoteport gt lt remoteaddress gt Defines a proxy as per the settings below AT LCPROX Queries all currently saved proxies Where lt id gt Number 1 8 You can define up to 8 proxy configurations lt type gt 1 TCP 2 UDP 3 GRE Local End 4 GRE Remote End lt count gt Number of simultaneous TCP UDP sessions lt listenport gt Port on which to listen lt remoteport gt Remote port to connect to lt remoteaddress gt Remote address to connect to To erase a proxy line one would create a new proxy with the lt id gt to be erased for the first argument followed by 0 for all other arguments E g AT LCPROX lt id gt 0 0 0 0 0 0 0 0 Proxy Examples NOTE these examples assume that the modem is connected via a crossover ethernet cable directly to a computer holding an IP of 192 168 1 35 and the cellular antenna IP of the modem is 166 139 64 245 Example 1 Incoming Connections AT LCPROX 1 1 1 23 23 192 168 1 35 This command will set the modem to accept incoming connections to the antenna IP 166 139 64 245 When the modem detects an incoming packet it first checks what port number it is coming in over If it sees port 23 as defined in the proxy above the modem will perform Network Address Translation NAT and send the packet to the port and IP specified in the proxy command line argument numbers 5 and 6 Example 2 Outbound Connections AT LCPROX 1 1 3 80 80 207 234 195 185 This command w
52. t the modem how and where to lay the GRE tunnel Please note that for the local and remote ends of the GRE tunnel you do not specify port numbers to transport data over In the above examples the tunnel port numbers are all set to zero You must specify Type 3 GRE Local End and the local IP for one end of the tunnel In the example above we have set the Local End to be 192 168 1 35 which is the system we want data to go to in this case the computer we re connected to Use zero for both port numbers in this line Note that you do not tell the GRE tunnel to terminate at the modem s ethernet IP it must be stretched all the way to the device which is to send receive data the computer It is necessary to specify the remote end of the GRE tunnel as well The third proxy line shows this Type 4 GRE Remote End is specified and the remote IP address entered is always the same as in the first proxy line Use local and remote port numbers of zero When these three lines are set up properly in the proxy you create the GRE tunnel by accessing the ethernet port on the modem To test this go into Windows and create a VPN to IP 192 168 1 222 When you click Connect a packet is forwarded from the computer to the modem s ethernet port 192 168 1 222 The modem looks in the proxy and sees it configured for a GRE tunnel by use of port 1723 in the first line port numbers of zero and types of 3 and 4 in the second and third lines The mode
53. tion in the area These configuration changes will remain even if the modem loses power Now that the modem is properly configured you may attempt OTASP as described in section 4 1 6 0 v 250 Configuration Commands The following section identifies some of the more useful industry standard AT commands as well as the Land Cellular proprietary AT commands utilized to configure how the CDM 820s and CDM 820se formats data inputs and responses These commands and all others in this manual are in addition to the industry standard AT commands Only the Land Cellular proprietary commands are covered in depth in this reference 6 1 E Command Echo While in command mode E controls the echo of characters received by the modem from the host Default El Storage SW Command values ATEO Disable echo of incoming characters in command mode ATE1 Enable echo of incoming characters in command mode 6 2 Q Quiet Mode While in command mode controls whether the modem will send result codes and unsolicited responses to the host This does not suppress the modem from sending solicited responses Default Q1 Storage amp W Command values ATQO Send result codes and unsolicited responses ATQ1 Do not send result codes and unsolicited responses 6 3 V Result Code Form Selects whether the modem sends long form verbose or short form numeric responses to the host Default 1 Storage SW Command values ATVO Send short form numeric result
54. to default configuration ATZ AT commands Digit Word Cross Reference Digit Word OK CONNECT RING NO CARRIER ERROR NO DIAL TONE BUSY NO ANSWER G A Ch P AHA ra O 15 0 CDMA Wireless Data Modem CDM 820s CDM 820se Specifications Power Input 2 1mm 5 5mm DC Barrel Jack Center Positive 8 24VDC 1 5A Primary Port RS 232 Serial 1 RJ 45 Optional Interface Connector 1 DB 9 Female 1 RJ 11 Optional 1 RJ 45 Optional Antenna Connector A GPS 500 SMA Female Data I O 500 SMA Female FCC ID RD5 LCC0308 LED Indicators From Left To Right Amber Carrier Detect DCD Red Transmit Tx Receive Rx Green Received Signal Strength Indicator RSSI Green Power Next To Power Jack Command Protocol AT Command Set SMS Command Set Modem IS 707A Compatible IS 95A B Complies With JSTD 008 and IS 95 JSTD 018 and IS 98A IS 707 and IS 99 data services 800MHz 1900MHz CDMA Air Interface Standards AMPS ANSI TIA EIA 553 CDMA TIA EIA IS 95A B J STD 008 Frequencies Tx 824 849MHz Tx 1850 1910MHz Rx 869 894MHz Rx 1930 1990MHz RF Power AMPS 400mW CDMA 200mW 200mW Maximum Tx Power AMPS 26dBm min CDMA 23 5dBm min 22 5dBm min Rx Sensitivity AMPS gt 116dBm CDMA gt 104dBm gt 104dBm Antenna Interface 50 Ohm SMA 50 Ohm SMA Temperature Operating 30 C to 60 C Storage 40 C to 85 C Humidity 0 85 Non Condensing 16 0 CDM 820s CDM 820se Mechanical Specifications The following
55. ts number 1 through 10 To clear a profile simply use the zeroes for the 9 profile arguments and 0 0 0 0 for the IP address Default 1 0 atd 777 1 0 232 2 0 atd 777 1 0 232 3 0 atd 777 1 0 232 Storage Automatic Command values AT LCPRFL lt parameters listed below gt Defines a profile as per settings below AT LCPRFL Queries all current profile settings Argument Number Type Parameters 1 Profile Number 1 First Saved Profile 2 Second Saved Profile 3 Third Saved Profile 2 Connection Type 0 SIP Only 1 Mobile IP Only 3 Phone Number To Dial atd 777 For High Speed Data Calls 4 Username Username For This Connection 5 Password Password For This Connection 6 Transport Method 0 TCP Connection 1 UDP Connection 7 Modem Functionality 0 Modem Will Act As A Client 1 Modem Will Act As A Server 8 Local Serial Protocol 0 Raw data is sent without any encapsulation 1 Encode with Addressed Serial Protocol See Below 9 IP Connection Where vvv www xxx yyy The IP To Connect To When Acting As A Client vvv www xxx yyy The Trusted Incoming IP To Listen To When Acting As Server See Below 10 Port Connection zzziz Port To Connect To When Acting As A Client 7zzzz Trusted Incoming Port To Listen To When Acting As A Server See Below Example Profile Setup String AT LCPRFL 1 1 atd 777 95443058 11 vzw3g com vzw 0 1 0 207 234 195 185 80 This will set up profile number 1 with
56. when the Request To Send circuit changes state The state of this parameter may be affected by the state of the IFC parameter and vise versa the last issued command takes precedence Default Storage Command values AT amp RO AT amp R2 amp RO SW Ignore RTS RTS Flow Control if RTS is off the terminal will not send data to the host 6 9 amp S DSR Configuration This parameter determines how the modem controls the state of the Data Set Ready circuit Default Storage Command Values AT amp SO AT amp S1 AT amp S2 AT amp S3 AT amp S4 6 10 amp Q CTS Configuration amp S0 amp W DSR always ON DSR ON when the RF signal present and phone registered on network DSR ON when connected to CDMA DSR always OFF DSR controlled via I O control feature This parameter determines how the modem controls the state of the Clear To Send circuit Default Storage Command values AT amp QO AT amp QI AT amp Q2 AT amp Q3 AT amp Q4 6 11 amp C DCD Configuration amp Q0 amp W CTS always ON CTS always OFF CTS flow control the terminal will set CTS low if it is unable to accept data from the host CTS follows state of RTS DSR Controlled via I O control feature This parameter determines how the modem controls the state of the Carrier Detect circuit Default Storage Command values AT amp CO ATS C1 AT amp C2 AT amp C3 amp C1 amp W DCD always ON DCD ON when connect
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