Cisco Bug: CSCun63641 - MGCP originated SRTP call falls back to RTP when reINV recv'd
Jan 05, 2016
- Cisco Unified Communications Manager (CallManager)
Known Affected Releases
Symptom: CUCM falls back from SRTP to RTP in the following scenario when reINV with sendonly/inactive comes in from remote UAC. PSTN -- MGCP GWY -- CUCM -- SIPT -- UAC Conditions: 1/ MGCP VGW configured for SRTP encryption: mgcp package-capability srtp-package 2/ SRTP Allowed checked on CUCM SIP Trunk Call Flow: a) Call comes in from MGCP VGW and is extended over SIP Trunk, b) Remote UA answers, SRTP is negotiated, c) Next UA puts caller on hold and sends reINV w sendonly/inactive attribute, d) CUCM replies back w/RTP.
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Bug Details Include
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