LandCell CDM819u User manual

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User’s Manual
CDMA Cellular Model CDM819s Serial Modem
CDMA Cellular Model CDM819u USB Modem
For use with LF1.2.04 and LF1.2.06 modules
In Support Of Hardware Revision1.0 and 2.0
Revision 1.8
April 2005

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Table of Contents
1Introduction ...................................................................................................................5
1.1 Modem Capabilities................................................................................................5
1.2 The Types Of Calls.................................................................................................5
1.3 Speeds ...................................................................................................................5
2Getting Started ...............................................................................................................6
2.1 Fast-Track: Circuit Switch Data (CSD) Call Setup....................................................7
2.2 Fast-Track: Packet Data Call Setup..........................................................................9
2.3 Fast-Track: Activating your Modem ......................................................................10
2.4 Fast-Track: Troubleshooting Communications with the Modem ..............................11
2.5 Setting Up Your Modem.......................................................................................12
2.6 Configuring The Modem.......................................................................................12
3Using Terminal Emulation Software To Talk To The Modem..........................................13
3.1 Serial Connection Reference Table ........................................................................13
4Activating The Modem .................................................................................................13
4.1 Over-the-Air Provisioning.....................................................................................14
5Placing Calls ................................................................................................................14
5.1 Making An Async Call Using Terminal Emulation Software ...................................14
5.2 Configuring Dial-Up Networking..........................................................................14
5.3 Making A 1xRTT Packet Data Call........................................................................15
5.4 PC Fax Modem and Setup for Hot Fax...................................................................15
6Troubleshooting...........................................................................................................16
6.1 Helpful Hints........................................................................................................16
6.2 Diagnosing COM Port Problems Using HyperTerminal..........................................17
6.3 Altering The Modem’s Cellular Parameters............................................................18
6.4 Entering Offline Digital Mode...............................................................................18
6.5 Unlocking The Service Programming Code (SPC)..................................................18
6.6 Entering The Mobile Directory Number (MDN).....................................................18
6.7 Entering The MSID/MIN Number .........................................................................18
6.8 Entering The Mobile Country Code (MCC)............................................................18
6.9 Entering The Mobile Network Code (MNC)...........................................................18
7Frequently Asked Questions..........................................................................................19
7.1 Does The Modem Understand AT Commands?......................................................19
7.2 At What Speed Can I Send Data?...........................................................................19
7.3 How Do I Perform An Over-the-Air Activation Of The Unit?..................................19
7.4 The CDM-819s/u Does Not Answer When I Dial From Another Modem. ................19
7.5 The Modem Auto-Answered, But Is Not Connecting. .............................................19
7.6 I Dialed a Phone Number Using ATDT and received "No Carrier"...........................19
7.7 I Dialed A Phone Number Using ATDT And Connected, But When I Physically Move
The Modem, I Receive A "No Carrier" Message.................................................................19
7.8 What Is The AT Command To Change The Baud Rate Of The Modem?..................20
7.9 What Is The AT Command To Check The Current Baud Rate?................................20
7.10 What Is The AT Command To Change The Flow Control?......................................20
7.11 When Do I Need A Null Modem Cable? ................................................................20
7.12 Why Do I Have To Set The Phone Number As #777? .............................................20
7.13 What Is Dormancy?..............................................................................................21
8Land-Cellular Proprietary AT Configuration Commands.................................................21
9Session Management Commands...................................................................................21
9.1 User Profiles ........................................................................................................21
10 AT Command Reference...............................................................................................21

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10.1 The Six Types Of Commands:...............................................................................21
10.2 Command Line Syntax..........................................................................................22
10.3 Result Codes ........................................................................................................22
10.4 Basic AT Parameters ............................................................................................23
10.5 S-Registers...........................................................................................................23
10.6 Basic Action Commands.......................................................................................24
10.7 Extended Commands ............................................................................................24
10.8 Cellular CDMA Commands ..................................................................................25
10.9 Land-Cellular Proprietary AT Command Set..........................................................28
11 Quick Reference Guide.................................................................................................29
12 RS-232 Serial Port Integration Parameters......................................................................32
13 Electrical & RF Specifications.......................................................................................33
13.1 CDM-819s/u Rev 2.0............................................................................................33
13.2 CDM-819s Rev 1.0...............................................................................................34
14 CDM-819s/u Rev 2.0 Mechanical Specifications ............................................................35
14.1 CDM819s Rev 2.0 End Cap Forward Views...........................................................35
14.2 CDM819u Rev 2.0 End Cap Forward Views ..........................................................36
14.3 End Cap Rev 2.0 Overhead & Profile Views ..........................................................37
14.4 Mounting Flange Guide for Rev 2.0.......................................................................37
15 CDM819s Rev 1.0 Mechanical Specifications ................................................................38
15.1 CDM819s Rev 1.0 End Cap Frontal Views.............................................................38
15.2 CDM819s Rev 1.0 End Cap Overhead & Profile Views ..........................................38
15.3 CDM819s Rev 1.0 Mounting Flange Guide............................................................39
16 Limited Warranty .........................................................................................................40
17 Copyright Notice..........................................................................................................40
18 Appendix.....................................................................................................................41
18.1 Carrier Specific Information..................................................................................41
18.1.1 Verizon Wireless..........................................................................................41
18.1.1.1 Over-the-Air Provisioning.........................................................................41
18.1.1.2 United States Verizon Subscriber Settings ..................................................42
18.1.1.3 1xRTT Connections (Username and Password) ..........................................42
18.1.2 Sprint PCS...................................................................................................43
18.1.2.1 IOTA Provisioning...................................................................................43
18.1.2.2 1xRTT Connections (Username and Password) ..........................................43
18.1.3 Bell Mobility (Canada) .................................................................................44
18.1.3.1 Provisioning.............................................................................................44
18.1.3.2 1xRTT Connections (Username and Password) ..........................................44
18.1.4 Western Wireless..........................................................................................45
18.1.4.1 Provisioning.............................................................................................45
18.1.4.2 1xRTT Connections (Username and Password) ..........................................45
18.1.5 Alltel...........................................................................................................46
18.1.5.1 Provisioning.............................................................................................46
18.1.5.2 1xRTT Connections (Username and Password) ..........................................46

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List of Tables
Table 1: User Profile Commands ...........................................................................................21
Table 2: Result Codes Table..................................................................................................22
Table 3: Basic AT Parameters Table ......................................................................................23
Table 4: S-Registers Table ....................................................................................................23
Table 5: Basic Action Commands Table.................................................................................24
Table 6: Extended AT Configuration Commands Table...........................................................25
Table 7: CDMA AT Parameter Commands Table ...................................................................26
Table 8: Cellular AT Command Extensions In Support Of Voice Services Table ......................28
Table 9: Proprietary AT Command Set ..................................................................................28

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1Introduction
Thank you for purchasing the Land-Cellular CDM819s or CDM819u (herein after referred to as
the CDM-819s/u) wireless modem. This guide will assist you in the set up and use of your new
CDM-819s/u modem. Follow the instructions in sections 2, 3 and 4 to install all necessary
software/drivers and set up your computer or data terminal to send and receive information via
the cellular network.
This manual is written for CDM-819s/u modems that have an RF module with a firmware version
of LF1.2.04 and LF1.2.06. The firmware version of the module can be confirmed with the
AT+GMR command. This command works with all firmware versions of the RF module.
1.1 Modem Capabilities
The CDM-819s/u automatically supports dual-band operations in the 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 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 11.0 has more information on how to enter these
operational modes
1.2 The Types Of Calls
This chapter describes some of the features and capabilities of the CDM-819s/u modem. Section
2 explains how to set up your modem to place data calls using HyperTerminal and Dial-Up
Networking. Understanding these methods may help you to integrate the module with other
systems as well.
The modem can make three types of calls:
Mobile Circuit Switch Data (Origination and Termination)
Mobile Packet Data (TCP/IP Origination and Termination), TCP and UDP
Voice Channel
1.3 Speeds
Data Rate From The Modem To The Cellular Network
Data rates for Circuit Switch Data calls are up to 14.4 kbps, whereas 1xRTT Packet Data Calls
(TCP/IP) supports data throughput up to 153.6 kbps.
Data Rate From Your Computer To The Modem
The CDM-819s/u modem has a default RS-232 port speed of 115,200 bps. 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. The modem's COM port
speed is variable from 300 bps to 230,400 bps. Warning: Please ensure your COM port is
capable of 230,400 data rates before changing the modem to this speed, or you may not be
able to talk to the modem.

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2Getting Started
The following Fast-Track Sections details how to quickly activate a modem, configure and test a
Circuit Switch Data (CSD) call, and a Packet Data Call (TCP/IP). Additional details if needed are
listed in the sections that follow the Fast-Track Sections. The following modem setup examples
apply for Windows 98, Me, NT, 2000 & 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.

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2.1 Fast-Track: Circuit Switch Data (CSD) Call Setup
1. Connect the modem to an active COM port on a PC with an RS-232 9 pin straight
through cable.
2. Attach the antenna and power connector.
3. Connect with a Hyper-Terminal session set to 115,200, 8 Bits, No Parity, 1 Stop Bit, and
Hardware Flow Control enabled, the default speed of the modem.
4. If the modem has not been activated, activate the modem. See Section 2.3 and the
Appendix for information specific to your carrier.
5. Change the Baud Rate to your required speed, i.e. 9600. AT+IPR=9600. Disconnect
HyperTerminal, change the baud rate to 9600 and reconnect.
6. Confirm contact with modem using AT+GSN this prints out the ESN of the modem (i.e.
+GSN: 45263AF4). If you get an Error or no communication, go to the section 2.4
Troubleshooting Communications with the Modem.
7. To auto-answer calls set ATS0=1 A value of ATS0=1 sets the modem to answer on the
first ring, where ATS0=0 disables the auto-answer feature. (Note this is a letter S
followed by a Zero)
8. Set the modem to answer/terminate incoming Asynchronous Data Calls; AT$QCVAD=4
9. To set the Carrier Detect (DCD) to follow its connection state to the Cellular Network, set
AT&C1. The yellow LED will turn on when connected to the Carrier, and turn off when not
connected. A value of AT&C0 sets CD to always be on, and a value of AT&C2 sets CD
to be always on, but to wink when there is a change in the connection state.
10. Ensure that DTR is set to return to modem to command state on an ON-to-OFF transition
of DTR with AT&D2 A value of AT&D0 ignores DTR, a value of AT&D1 enters
online command state upon an ON-to-OFF transition of DTR.
11. Save the new settings in Profile 1 with AT&W1 and then set Profile 1 as the Default
profile with AT&Y1
12. To confirm your settings, do an AT&V. This will print out about 7 lines of text with all the
register values.
13. Verify that you have good signal strength, AT+CSQ?. A typical reply is +CSQ? 19,99.The
signal strength ranges from 0 to 31, the higher the number the better the signal.
14. Set the modem for verbose result codes, with ATV1, this displays result codes as Words,
ATV0 displays result codes as digits.
15. Confirm and that you are registered on the cellular network. AT+CSS? A reply of +CSS?
2,Z,99999 indicates that you are not registered. It may take up to 15 seconds or so after
power-up to register on the network. Once registered a typical response will be +CSS?:
1,A,4152 where 1 is the band class, 1=800 MHz, 2=1900 MHz, A-F is the band (Z
indicates not registered on network), 4152 is the SID, i.e. the cell tower ID, (99999
indicates not registered on network).
16. Test CSD Origination by calling your cell phone with ATDT5551234567 (replace
5551234567 with your cell phone number). Once the phone rings and you answer the
phone, you should hear sounds like a fax negotiation.
17. Test CSD Termination by calling the phone number of your modem. Once it answers
you should hear sounds like a fax negotiation. Hang up.

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18. To further test CSD termination connect another modem, (landline or cellular) to another
available COM port on a PC. Configure that modem and the COM port to your required
speed, i.e. 9600, with AT+IPR=9600.
19. Start HyperTerminal on that PC’s COM port and call the Land-Cell modem from this
terminal window with the following command. ATDT<Phone number of 819 Modem>.
20. The terminal window connected to the 819 modem, will say “RING” and then once the
modems have negotiated a connection, it will say “CONNECT”.
21. You can now type in text in either terminal window and it will appear in the other terminal
window. This means that your modem is now answering incoming CSD data calls.
22. Type in ATH0 to disconnect the call.
23. Once you can originate and terminate CSD calls with the modem you are ready to
connect the modem to your equipment. Please ensure that your equipment is configured
to your required data rate, i.e. 9600 bps.
24. By default the Modem is configured for full hardware flow control. This uses the control
signals, CTS and DTS, DSR and DTR, Carrier Detect, and Ring Indicator. The pin-out of
the modem is in Section 12.
25. If you are using a 3 wire interface cable with RX, TX and Ground or your equipment is
configured for no hardware flow control, you will need to disable Hardware flow control
with AT+IFC=0,0 and save it in your profile with AT&W1.
26. If your equipment cannot disable hardware flow control, you can spoof the signals by
shorting pins 1,4 and 6 together, and also pins 7 and 8 on the DE-9 connectors of your
three-wire cable.

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2.2 Fast-Track: Packet Data Call Setup
1. Create a 19,200 Generic Modem and configure it for 115,200, 8 bits, no parity, 1 stop bit.
Attach the modem to an active COM port on the PC, i.e. COM1.
2. Configure the selected COM port to a maximum speed of 115,200 in the Hardware
device manager.
3. Attach the antenna and power to the CDM-819 modem.
4. Connect it to the COM port with a 9 pin RS-232 straight through serial cable.
5. If the modem has not been activated, activate the modem. See Section 2.3 and the
Appendix for information specific to your carrier.
6. Use HyperTerminal on the COM port to set the Carrier Detect (DCD) to follow its
connection state to the Cellular Network, set AT&C1. The yellow LED will turn on when
connected to the Carrier, and turn off when not connected. A value of AT&C0 sets CD to
always be on, and a value of AT&C2 sets CD to be always on, but to wink when there is
a change in the connection state.
7. Ensure that DTR is set to return to modem to command state on an ON-to-OFF transition
of DTR with AT&D2 A value of AT&D0 ignores DTR, a value of AT&D1 enters
online command state upon an ON-to-OFF transition of DTR.
8. Save the new settings in Profile 1 with AT&W1 and then set Profile 1 as the Default
profile with AT&Y1
9. To confirm your settings, do an AT&V. This will print out about 7 lines of text with all the
register values.
10. Confirm and that you are registered on the cellular network. AT+CSS? A reply of +CSS?
2,Z,99999 indicates that you are not registered. It may take up to 15 seconds or so after
power-up to register on the network. Once registered a typical response will be +CSS?:
1,A,4152 where 1 is the band class, 1=800 MHz, 2=1900 MHz, A-F is the band (Z
indicates not registered on network), 4152 is the SID, i.e. the cell tower ID, (99999
indicates not registered on network).
11. Create a Dial-Up Networking (DUN) connection using the modem that you created with
the active COM port, i.e. COM1 in Network and Dial-up Connections. Configure it to
115,200 bps and set Security to Typical.
12. Start a DUN session by double clicking on the DUN icon that was created.
13. Set the username and password as defined in the Appendix for your carrier.
14. Enter the phone number as #777 with no area code and click on Dial.
15. The modem will dial out and attempt to connect.
16. If the configured baud rate for the modem, the COM port, the modem and the DUN do
not match, the DUN will not be able to talk to the modem properly and you will get a
hardware error message. Otherwise the DUN will contact the cellular network and
authenticate the user on the network.
17. Once connected you will be able to browse the Internet through the DUN session. To
confirm this, disable any other network connection you may have running.

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2.3 Fast-Track: Activating your Modem
1. Connect the modem to an active COM port on a PC with an RS-232 9 pin straight
through cable.
2. Attach the antenna and power connector.
3. Connect with a Hyper-Terminal session set to 115,200, 8 Bits, No Parity, 1 Stop Bit, and
Hardware Flow Control enabled.
4. Confirm contact with the modem with AT+GSN this prints out the ESN of the modem i.e.
(+GSN: 45262036). If you get an Error or no communication, go to the section on
Communicating with the Modem.
5. Verify that you have good signal strength, AT+CSQ?. A typical reply is +CSQ? 19,99.The
signal strength ranges from 0 to 31, the higher the number the better the signal.
6. Confirm and that you are registered on the cellular network. AT+CSS? A reply of +CSS?
2,Z,99999 indicates that you are not registered. It may take up to 15 seconds or so after
power-up to register on the network. Once registered a typical response will be +CSS?:
1,A,4152 where 1 is the band class, 1=800 MHz, 2=1900 MHz, A-F is the band (Z
indicates not registered on network), 4152 is the SID, i.e. the cell tower ID, (99999
indicates not registered on network).
7. Perform the activation instructions specific to your carrier as indicated in the Appendix.
I.E. For Verizon, OTASP can be initiated with an AT command, AT+CDV*22899. Wait 4
minutes and then test that it worked.
8. Confirm that the modem is activated, by performing a voice call to your cell phone,
AT+CDV<Cell Phone Number> (Use no spaces or angle brackets). Your cell phone
should ring and display the phone number of the modem.