Trouble with GPRS send - ERROR - Modem Response (2)

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Big Jimmy
New member
Username: Jimmy8091

Post Number: 1
Registered: 07-2005
Posted on Wednesday, August 10, 2005 - 10:36 pm:   


I'm evaluating your software, and I'm having a bit of trouble sending an SMS via GPRS. Messages will only send occassionally, sometimes 1 an hour, sometimes instantly. Sending SMS via GSM works fine.

I'm running Win2k SP4 with a MultiTech GSM/GPRS Modem, model #: mtcba-g-f2, firmware rev: 6.40b (the current rev. 6.41c requires me to send the unit back to HQ for a firmware upgrade) and the latest ver of nowSMS.

I'm on the Fido network in Vancouver, although it's recently mergered with Rogers. Consquently, I'm always roaming. AT+COPS? only returns the Rogers BSC, and AT+CGREG? returns 1,5.

As you can see from my debug log I'm trying to:
1) abort any previous commands - AT+WAC
2) Delete any messages on the Sim, - at+cmgd=1,4
3) "lock" the modem to the rogers network, - at+cops=1,2,302720
4) trying to define the PDP type. (I've tried PPP, IP, withouth any luck) - at+cgdcont=1,"IP",""; +cgdcont=2,"IP",""

Oddly enough, when I remove the SIM from the modem, put it in my Phone & connect to the web via WAP, then put the SIM back in the modem, I'm able to send off queued messsages for a short while. Otherwise it's just hit or miss.


text/plainSMS Debug Log
Big Jimmy
New member
Username: Jimmy8091

Post Number: 2
Registered: 07-2005
Posted on Friday, August 12, 2005 - 07:08 pm:   

Okay, I found the issue.

In Vancouver, Fido is in the process of merging with Rogers. Fido allows SMS over GPRS, Rogers does not.

As the modem would switch between networks, gprs sending would be enabled/disabled, respectively.

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