User manual

Setting TCEQ Networking Parameters for an Enfora GSM 1208

To get information on signal strength:

AT+CSQ Will return the signal strength (do not type ?)

+CSQ: 10,99 Receive signal strength = 10, -93 dBm

See reference #2 regarding the modem AT command set to know what each possible

return means.

If you can not see characters on the screen type ATQ0

If you still cannot see characters on the screen type ATE1V1

Troubleshooting:

Problem: After powering on, the green LED flashes continuously.

Solution:

Is the SIM card inserted or inserted correctly? Make sure to determine coverage

area from wireless provider and check that service has been activated and SIM card is

valid. Also connect external antenna.

Problem:

Modem responds with an “OK” to AT&F and AT&W, but an “ERROR” with

most other commands.

Solution: Make sure the serial cable has no shorts and is wired as directed.

Problem: No signs of any communication with modem.

Solution: Is power connected correctly? Is amber LED solid after turning on power from

DC power supply? Correct voltage range applied? Communicating with correct serial

cable? Correct COM port setting on host computer? Communication settings as

instructed? Was the baud rate previously changed on modem and not documented?

Problem: Errors were received while trying to send script file.

Solution: Make sure power is on to modem and with the correct polarity. Make sure

proper driver for serial connection is installed on the computer if applicable and check

that the connection is valid. Repeat steps from the beginning and try again.