Hello Damien,
as you have not provided the exact RFC that includes this functionality I am unable to confirm if we officially support this feature.
I am aware that in SIP 3.2.6, UCS 3.3.2 and UCS 4.0.0 we added:
67622 Phone displays correct caller ID from a group pickup number
Above added the functionality on a re-INVITE to update the remote address or to allow to change the display if there is no "Remote-Party-ID" like header.
Best Regards
Steffen Baier
Polycom Global Services
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The title Polycom Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. My official "day" Job is 3rd Level support at Poly but I am unable to provide official support via the community.
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Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
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