How to use Polycom VVX Intercom function with Brekeke

The Intercom feature of Polycom VVX enables users to place an intercom call that is answered automatically on the dialed contact’s phone.
For this feature, the value of Alert-Info header in the INVITE from UAC needs to be added in the INVITE sent by PBX to UAS.



Configuration at ARS in Brekeke PBX


ARS – Patterns IN
Matching patterns
Plugin 1: sipheader
Param 1: Alert-Info
Return 1: (^Intercom$)

Deploy patterns
Custom: &caller.alert-info=&p1
ARS – Patterns OUT
Matching patterns
<Please add appropriate patterns for your environment>

Deploy patterns
Custom: Alert-Info=&{caller.alert-info}


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