# Can not catch gsm disconnection

**URL:** <https://forum.sierrawireless.com/t/can-not-catch-gsm-disconnection/5225>\
**Category:** Open AT\
**Created:** [September 9, 2011, 8:18am UTC](https://forum.sierrawireless.com/t/can-not-catch-gsm-disconnection/5225 "2011-09-09T08:18:36Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![zafer](https://avatars.discourse-cdn.com/v4/letter/z/439d5e/32.png) [@zafer](https://forum.sierrawireless.com/u/zafer)\
**Post date:** [September 9, 2011, 11:45am UTC](https://forum.sierrawireless.com/t/can-not-catch-gsm-disconnection/5225/3 "2011-09-09T11:45:30Z")

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> [@awneil](#):
>
> Are you also looking for other +CREG: responses that would indicate loss of registration?  
> eg 0, 3 ?

Yes of course, i check other responses too.

> [@awneil](#):
>
> If you suspect that the module is missing unsolicited responses, perhaps you should try polling the +CREG state explicitly?

I also execute AT+CREG? command for every 15 seconds.

> [@awneil](#):
>
> Could it receive SMS?

It can not receive SMS either. It completly loses GSM registration, can not reregister to the network and AT+CREG?, +CREG unsolisited responses seems fine.

> [@awneil](#):
>
> Do you monitor +WIND: 7 and 8 ?

I dont monitor these responses. I will look for them in the documantation incase they will help to understand the problem.

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