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Ringing the Cell Phone passing Caller ID


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When setting up a Cell phone to ring immediately or delays on an extension, it appears to send the callerID of the PBXnSIP box to the cell phone. Is it possible to send the original callers ID. (This might be asking to much)

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The PBX does what can be done. But most ITSP simply do not respect the information. SS#7 supports it, and it is a know feature in most digital systems. But today, the PSTN gateways still have a problem with it.


See http://wiki.pbxnsip.com/index.php/Outbound_Calls_on_Trunk, especially the "f" flag. You might have to try out which mode (Remote-Party-ID or RFC 3325) your provider supports.

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