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Asterisk 1.8.6 setting outbound callerid based on caller

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Last Modified: 2013-11-12
Hi Gurus,

I'm an asterisk programming novice and I need help with finding the correct syntax to match and set an outgoing call from a specific user from a specific SIP Trunk and set as a specific caller id, i.e.:

User A from SIP Trunk A @ exten 202 ==> dialing out ==> set callerid = 3101234567
User B from SIP Trunk B @ exten 202 ==> dialing out ==> set callerid = 3101235555

The problem is that the calls are originating from another PBX, i.e. MS Lync, via a SIP Trunk.

So my thinking is, I need to find out the outgoing SIP info of the caller, if it matches, set the caller id via:
 Set(CALLERID(num)=13101234567)

So I'm not sure if i need to use a marco or gotoif or what...Please help.

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