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Cisco Bug: CSCun65307 - CUCM updating wrong security type in answer SDP.

Last Modified

Mar 08, 2018

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

10.0(1.10000.24) 10.5(1.10000.5)

Description (partial)

Symptom:
A. SIP_A ---- SIP_B (both side support SRTP fallback)
                 Let's say both A and B are video capable. Video Call is established with SRTP initially. 
B.  Video de-escalation occurs from side B. Send ReInvite from B with RTP. Make sure both SIPIF_A and SIPIF_B handle line stack index correctly.

RTP/SRTP flags  for video m line not match with audio as port=0 for video m line.

Conditions:
A. SIP_A ---- SIP_B (both side support SRTP fallback)
                 Let's say both A and B are video capable. Video Call is established with SRTP initially. 
B.  Video de-escalation occurs from side B. Send ReInvite from B with RTP. Make sure both SIPIF_A and SIPIF_B handle line stack index correctly.

RTP/SRTP flags  for video m line not match with audio as port=0 for video m line.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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