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Cisco Bug: CSCul06848 - IPIPGW stuck with SIP re-INVITE when the call is transferred by REFER

Last Modified

Aug 14, 2019

Products (1)

  • Cisco IOS

Known Affected Releases

15.3(0.1)

Description (partial)

Symptom:
CME ---- Gatekeeper ---- IPIPGW (CUBE) ----- SIP -----CUCM -----SIP----- MP server 1 (then MP1 transfers the call to MP2 using SIP REFER)

Conditions:
When MP server transfers the call to another MP (using SIP REFER), there is re-INVITE coming from CUCM to CUBE, CUBE is able to send back 100 Trying but nothing else, this causes timeout on CUCM after 8 seconds and call disconnects.
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