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Cisco Bug: CSCui95415 - Enhancement to make CUCM send REFER message to transfer calls

Last Modified

Nov 27, 2020

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)

CUCM at this point does not use the REFER method in SIP to transfer a call. It uses INVITE and UPDATE messages. This causes extra SIP communication legs in complex transfer scenarios which wouldn't be needed if REFER were used like in Meeting Place or CME.

Transfer scenario from one SIP party to another SIP party.  May or may not necessarily be an inter-cluster call.
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