Telenetics CDMA manual Chapter Troubleshooting, Problem Solution

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AT Commands

Chapter 3

Troubleshooting

This chapter describes troubleshooting procedures you can use in the unlikely event you encounter a problem with your OMEGA CDMA Modem.

Problem

Solution

 

 

OMEGA is powered on and connected to

Be sure the modem and DTE are using the same

DTE, but does not respond to commands.

port (baud rate) settings.

 

Open the OMEGA and verify that the DSR LED

 

is ON. If it is OFF, check the seating of the

 

transceiver.

 

 

When I initiate a call, the OMEGA

Use a telephone to verify that the number you are

responds immediately with NO

dialing is valid and not busy.

CARRIER.

Use the AT command AT+CSQ to display the

 

 

signal quality. If the first number is below 20, you

 

may have poor reception from your current

 

location. If the second number is 99, you are not

 

getting the required wireless signal from your

 

location.

 

Use the RSSI DIP switch to display and check the

 

received signal strength (see Table 2-2 on page

 

13).

 

 

OMEGA does not answer incoming

Try the solution for initiating calls.

telephone calls automatically.

Use the AT command AT&V to display most of

 

 

the modem configurations. Verify that the value

 

for the Register S0 is greater than 1.

 

 

Some data corruption is observed during

Your selected data transmission rate needs flow

data exchanges via a remote modem.

control. Use Switch 6 to enable flow control (see

 

Table 2-2 on page 13).

 

 

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Contents Omega Cdma Modem User’s Guide Important Notice FCC Radiation Exposure Statement FCC ID N7NSB555FCC Part 15 EMI Statement Contents Chapter Introduction ModelsFeatures OptionsIntroduction Hardware Features InstallationType II Omega Cdma Modem Type II Omega Cdma Modem with Marwell Socket Adapter Chapter Installation Installation SummaryUnpacking Your Hardware Obtaining Cellular Telephone ServiceAT Commands Items Supplied by the UserInstalling the Optional 8-Port RS-232 Module Power Supply ConnectionsAttaching Mounting Feet stand-alone Omega Cdma Modem Setting the Omega DIP Switch Omega Cdma Modem Switch Settings DescriptionAttaching a DTE Cable DTR Dial EnableAT Commands DTE Baud Rate Switch Baud Rate bps OFFDCD OUT RTS TXD CTS RXD TX+ OUT RX+Powering-up the Modem Call Answer TestingConfiguring the Omega Cdma Modem LEDs LEDs Indicating Modem Control Signals SW5 onDTE Signal LEDs Indicating Rssi SW5 OFFChapter Troubleshooting Problem SolutionAppendix a AT Commands Table A-1. Basic AT Commands Parameter Description CommandString default is 2 seconds Table A-3. Basic Action Commands Parameter DescriptionCLIENT? ResetCLIENT= DTRAT Command Parameter Description ~NAMVAL= ~NAMLCK~NAMVAL?0 Write Account Activation DataAT Command Line Syntax Table A-6. Telenetics-Proprietary CommandsResult Codes Using S-Registers AT Commands Table A-7. Result Codes Number Word DescriptionOnly until the next reset or power off Page Appendix B Installing the 8-port RS-232 Module Verifying Package ContentsInstallation Installing the 8-port RS-232 Module Eight-Port Module PortsLimited Product Warranty Return Merchandise Authorization RMA Procedure