This one worked fine for a couple hours, but it began failing to deliver sms messages over the network and showed the following lines in the log:ġ6:52:24:218 ThreadProcessModem: ERROR - Error waiting for response from modem (2)ġ6:52:24:218 ThreadProcessModem: Error: ERROR - Error waiting for response from modem (2)ġ6:52:24:218 ReceiveModemCommand: Error - 5ġ6:52:30:226 ThreadProcessModem: Before ModemRelease - COM3:ġ6:52:30:226 ThreadProcessModem: After ModemRelease - COM3:ġ6:52:36:235 ThreadProcessModem: Before ModemAllocate - COM3:ġ6:52:36:235 ThreadProcessModem: After ModemAllocate - COM3: - OKġ6:52:36:235 ThreadProcessModem: Re-initializing modem: COM3. I'm going to try the AT command you have recommended.īut I have been trying another modem, a Billionton GPRS wireless USB modem. Yes, the modem responds to at commands at that time, but it is not registered in the network. We're following the issue to make sure the device is not blocked in their system. They have been quite sensitive to the new IMEI prefixes in the past. I'm also suspect this could be related to the operator.

ThreadProcessModem: Error: ERROR - Error waiting for response from modem (2) ThreadProcessModem: ERROR - Error waiting for response from modem (2) We had the following lines in the log file: Yes, when the modem entered into the unresponsive mode, it stopped responding to NowSMS. The network does not support GPRS at all. We are using this modem to send SMS over GSM. What happens with NowSMS? Does the modem start rejecting messages? If you can, I would try sending AT+CGATT=0 to detach from GPRS, and see if that might wake things up. When this problem happens, are you able to exit NowSMS and actually send any AT commands to the modem?

It sounds like Wavecom needs to issue a firmware update, but I don't have any further details.

There's another forum participant out (Ashot S), who has mentioned that Wavecom modems seem to be unstable when sending SMS messages using SMS over GPRS for extended periods of time. Has anyone had this same problem on any wavecom-based gsm modem? Is there any AT command I can send to modem at this time to get more info on what has gone wrong? We have tried changing the modems and the SIM cards, but the problem persists. The LED on the modem which normally blinks, stays ON all the time. After a few hours of operation (usually 12-24 hours) the modem becomes unresponsive for no apparent reason. The modems are connected via the serial port. We have two wavecom fastrack M1306B-PP gsm modems which we use in NowSMS.

Wavecom fastrack m1306b driver