TCP_CLIENT problem

Legacy Open AT
1

Hi.

I couldn’t get Q2687 to work with the TCP_Client sample code provided from wavecom.

Whenever I run the sample code, I get

GPRS: open: -> DISCONNECTED
GPRS: start: -> CONNECTING
GPRS: GPRS EVENT SETUP OK (cid=1): GPRS activate
GPRS: GPRS EVENT SETUP/ACTIVATE KO (cid=1): -> DISCONNECTED

I have double checked the APN , UserID , Password and it was correct.

Please help.

Kind regards

Wooje Kim

2

Hi,

I suggest you to check your GPRS connection without OpenAT running first.

You can follow the steps to activate GPRS, getting IP address :

AT+CMEE=1
AT=CGDCONT=1,“IP”,“APN_NAME”
AT+CGATT=1
AT+CGACT=1,1
AT+CGPADDR=1

You should get “OK” on entering the above commands, and get IP address finally. if not you may get some error codes, resd the AT manual for the reason.

3

Thanks for your help.

I have tried to run those AT commands.
When I run these steps

AT+CGATT=1 -> I get CME ERROR 148
AT+CGACT=1,1 -> CME ERROR 3

also I found out that:

AT+CSQ -> 99,99

Any Ideas?

Thanks

Kind regards

Wooje Kim

4

"AT+CSQ -> 99,99 "

Seems you module has not registered to the network, can you able to make a voice call ?

Check the module antenna connection , and verify if the SIM card can register to the network by putting it to a normal mobile phone first.

5

by default the wavecom modem uses gsm 850 and 1900 MHZ frequency.
you should change it via AT command to your GSM network frequency.