# AT+CLCC

**URL:** <https://forum.sierrawireless.com/t/at-clcc/6868>\
**Category:** Legacy HL Series\
**Created:** [November 21, 2013, 9:03am UTC](https://forum.sierrawireless.com/t/at-clcc/6868 "2013-11-21T09:03:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![labouillemarc](https://avatars.discourse-cdn.com/v4/letter/l/35a633/32.png) [@labouillemarc](https://forum.sierrawireless.com/u/labouillemarc)\
**Post date:** [November 21, 2013, 9:03am UTC](https://forum.sierrawireless.com/t/at-clcc/6868/1 "2013-11-21T09:03:54Z")

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Hi,  
There is possible to activate AT+CLCC and on every changes states of modem , the modem send imself +CLCC… on receive or send call. Not to be make a pooling of AT+CLCC each ms

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**Author:** ![lotam](https://avatars.discourse-cdn.com/v4/letter/l/958977/32.png) [@lotam](https://forum.sierrawireless.com/u/lotam)\
**Post date:** [November 21, 2013, 9:33am UTC](https://forum.sierrawireless.com/t/at-clcc/6868/2 "2013-11-21T09:33:12Z")

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May I ask which HL module you are using?

Have you tried to enable the call state change notification? e.g. AT\*PSCSCN=1

Please refer to AT command interface guide for HL to get more info, e.g.  
[http://developer.sierrawireless.com/en/Resources/Resources/AirPrime/Software/AirPrime\_HL6528x\_AT\_Commands\_Interface\_Guide.aspx](http://developer.sierrawireless.com/en/Resources/Resources/AirPrime/Software/AirPrime_HL6528x_AT_Commands_Interface_Guide.aspx)

Thx

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**Author:** ![labouillemarc](https://avatars.discourse-cdn.com/v4/letter/l/35a633/32.png) [@labouillemarc](https://forum.sierrawireless.com/u/labouillemarc)\
**Post date:** [November 21, 2013, 9:39am UTC](https://forum.sierrawireless.com/t/at-clcc/6868/3 "2013-11-21T09:39:31Z")

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OK very good, I work with Hilo NC V2 because this module is compatible with GSMR, i try to developp a GSM phone .  
I usualy develop GSM PTE for raillway emergency call.