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User's Manual
CDMA Cellular – Model CDM819i Intelligent Serial Modem
CDMA Cellular – Model CDM820i Intelligent Ethernet Modem
Items denoted with a † must be prefaced with the
AT+LCPAST=1 command before execution.
Revision 2.91
June 2004
Land-Cellular Corp.
12068 Miramar Parkway
Miramar, FL 33025
1-954-430-5811
www.land-cellular.com
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Table of Contents
Summary of Contents for Land-Cellular Corp. CDM819i
- Page 1 User’s Manual CDMA Cellular – Model CDM819i Intelligent Serial Modem CDMA Cellular – Model CDM820i Intelligent Ethernet Modem Items denoted with a † must be prefaced with the AT+LCPAST=1 command before execution. Revision 2.91 June 2004 Land-Cellular Corp. 12068 Miramar Parkway...
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Page 2: Table Of Contents
Contents Introduction ..........................1.0 Overview..........................1.1 Modem Capabilities ........................ 1.2 Operating States........................1.3 The Types Of Data Calls ......................1.4 Speeds............................ 1.5 Status Indicators........................1.6 Modem Setup Guide ........................2.0 Getting Started........................2.1 Using Terminal Emulation Software To Talk To The Modem............3.0 Serial Connection Reference Table ................... - Page 3 Layer 1 (Hardware) Communications ....................13.0 RS-232 Serial Port Integration Parameters................13.1 RJ-45 Ethernet Port Integration Parameters................13.2 Quick Reference Guide ........................14.0 CDMA Wireless Data Modem CDM819i/CDM820 Specifications ..........15.0 CDM819i/CDM820 Mechanical Specifications ................16.0 End Cap Frontal Views ......................16.1 End Cap Overhead & Profile Views..................16.2...
- Page 4 Mounting Flange Guide ......................16.3 Copyright Notice .........................17.0 Limited Warranty ........................18.0 Appendix ............................19.0 Addressed Serial Protocol Specification ...................19.1...
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Page 5: Introduction
1.0 Introduction Thank you for purchasing the Land-Cellular Intelligent Modem. This guide makes reference to the CDM819i and CDM820i 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. -
Page 6: Operating States
·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... -
Page 7: Speeds
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. -
Page 8: Modem Setup Guide
·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 for RSSI once every 5 seconds, which causes the Tx/Rx LED to blink briefly. 2.0 Modem Setup Guide This following subsections will assist in configuring your modem to interface and operate with your data terminal. -
Page 9: Activating The Modem
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. -
Page 10: Troubleshooting
·Only assign one device to any given COM port on your system. ·The Land-Cellular CDM819i and CDM820i data modems have a default COM port speed of 57600bps. This is the data rate at which your modem connects to your computer. -
Page 11: Altering The Modem's Cellular Parameters
If you are experiencing 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, open your terminal emulation software as described in the "Using Terminal Emulation Software To Talk To The Modem"... -
Page 12: Unlocking The Service Programming Code (Spc)
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 CDM819i and CDM820i 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. -
Page 13: Z Soft Reset And Restore Saved Settings
Report product identity. 6.2 Z Soft Reset And Restore Saved Settings The "Z" command will soft reboot the modem without removing power. Default: Storage: Command values: Resets the modem. 6.3 E Command Echo While in command mode, "E" controls the echo of characters received by the modem from the host. -
Page 14: O Return To Online State
Storage: Command values: Disconnects the current session. 6.7 O Return To Online State This command instructs the modem to return to online data state and issue a CONNECT or CONNECT <text> result code. Default: Storage: Command values: Returns to Online State. 6.8 +++ Enter Online Command State If the modem detects the "+++"... - Page 15 This parameter determines how the modem responds when the Data Terminal Ready circuit changes state. The &D5 and &D6 settings allow customer specific applications to be controlled via the DTR line. Default: &D0 Storage: &W Command Values: AT&D0 Ignore DTR. AT&D1 If in online data state, upon an on-to-off transition of DTR, the modem enters online command state and...
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Page 16: R Rts Configuration
remote station (as determined by AT+LCPRFL) 6.12 &R RTS Configuration This parameter determines how the modem responds 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: &R0 Storage:... -
Page 17: N Ri Configuration
Command values: AT&C0 DCD always ON. AT&C1 DCD ON when connected to remote host. AT&C2 DCD always OFF. AT&C3 DSR controlled via I/O control feature. 6.16 &N RI Configuration This parameter determines how the modem controls the state of the Ring Indicator circuit. -
Page 18: At+Lcpast Pass Unknown V.250 Commands To The Cellular Module
Storage: &W Command Command Values: AT+LCNOER=0 Send ERROR response to unknown commands. AT+LCNOER=1 Send OK response to unknown commands 6.20 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. -
Page 19: Atdn Connection String
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=No encoding, data is sent without any... -
Page 20: At+Lcgrst End Cellular Session
Storage: &W Command Command values: AT+LCGASC=0 Maintain Command State unless a connection is otherwise initiated with the ATD or ATD*<IP> command. Also disconnects an existing session. AT+LCGASC=1 Autoconnect to the 1x network via Profile #1 AT+LCGASC=2 Autoconnect to the 1x network via Profile #2 AT+LCGASC=3 Autoconnect to the 1x network via Profile #3 7.4 AT+LCGRST End Cellular Session... -
Page 21: At+Lcsest Session Disconnect Timer
Default: Storage: &W Command Values: AT+LCIDCT= <timeout> Where <timeout> is a number between 0 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. -
Page 22: At+Lcethr Print The Route Table
This command will set the current TCP/IP gateway of the modem. Default: 0.0.0.0 Storage: &W Command Values: AT+LCETHG= <Gateway IP> 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:... - Page 23 The modem is placed into GRE mode by configuring the first proxy line to use 1723 as listenport and 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 remoteaddress and then lays a GRE tunnel over the TCP pipe.
- Page 24 <type> 1=TCP, 2=UDP, 3=GRE Local End, 4=GRE Remote End <count> Number of simultaneous TCP/UDP sessions. <listenport> Port on which to listen. <remoteport> Remote port to connect to. <remoteaddress> Remote address to connect to. To erase a proxy line, one would create a new proxy with the <id> to be erased for the first argument followed by “0”...
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Page 25: Miscellaneous, System And Diagnostic Commands
that you are about to establish a GRE tunnel to the IP specified. The next two proxy lines instruct 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. -
Page 26: At+Lcshwt Show Running Threads
messages at local RS-232 port. Reserved Reserved Reserved Reserved Reserved Reserved 10.2 AT+LCSHWT Show Running Threads This command will issue a list of all threads currently executing in the modem. Default: Storage: 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. -
Page 27: Frequently Asked Questions (Faq)
Where <timeout> is a number between 0 and 65535 minutes. 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. -
Page 28: When Do I Need A Null Modem Cable
† By default, the modem is set up as AT+IFC=2,2 to allow hardware flow control in both directions. 11.7 When Do I 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. -
Page 29: Command Line Syntax
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. -
Page 30: Basic At Parameters
BUSY Busy signal detected. 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&V† command when in command state. The following table shows the command format. - Page 31 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.
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Page 32: Cellular Cdma Commands
Even The <parity> argument is only valid when <format> 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. -
Page 33: Layer 1 (Hardware) Communications
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 CDM819i and CDM820i into your systems. Standard RS-232 DB-9 Pinout: Name Direction Description --------------------------------------------------------- «—... -
Page 34: Ethernet Port Integration Parameters
Default RS-232 Communication Parameters: Bits Per Second: 57600 Data Bits: Parity: None Stop Bits: Flow Control: Hardware 13.2 RJ-45 Ethernet Port Integration Parameters You can use the guide below to design ethernet cables to integrate the CDM820i into your systems. Standard RJ-45 Ethernet Pinout: Function Color... - Page 35 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 <Signal Quality>,<Frame Error Rate>...
- Page 36 † To repeat the last command issued: A/ † To enter Online Command state: ; † Return to Online State from Command State: ATO0 Reset to default configuration: ATZ0 ·AT commands Digit/Word Cross Reference: Digit Word CONNECT RING NO CARRIER ERROR NO DIAL TONE BUSY...
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Page 37: Cdma Wireless Data Modem Cdm819I/Cdm820 Specifications
15.0 CDMA Wireless Data Modem CDM819i/CDM820 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: 50... -
Page 38: Cdm819I/Cdm820 Mechanical Specifications
The following section describes in detail the exterior dimensions of the CDM819i/CDM820 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. -
Page 39: End Cap Overhead & Profile Views
1.610” high without the end caps attached. 16.3 Mounting Flange Guide The following depiction illustrates the mounting footprint of the CDM819i/CDM820. The mounting flange holes located on each end of the modem are indicated by the intersections of the four lines. -
Page 40: Copyright Notice
17.0 Copyright Notice CDM819i and CDM820i are a registered trademarks of Land-Cellular Corporation. Windows, Windows 98, Me, NT, 2000 & XP, XP Professional and Dial-Up Networking are registered trademarks of Microsoft Corporation. HyperTerminal is a trademark of Hilgraeve, Inc. ProComm is a registered trademark of DataStorm Technologies, Inc. -
Page 41: Limited Warranty
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. -
Page 42: Appendix
19.0 Appendix Below is a brief description of the Addressed Serial Protocol specification. Please see section 8.2 “AT+LCLENC Local Data Encoding” 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. - Page 43 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 signif icant bit of the least significant octet equals "1".