Preview Tool

Cisco Bug: CSCta42890 - SIP : IOS GW / CUCME sending RTP Port 0 in Invite or 200 OK

Last Modified

Jun 15, 2018

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)


SIP call failure and/or 1-way audio
ccsip message deb shows  IOS sending m=audio 0 in outgoing INVITE or 200 OK (for incoming Invite) 


Calls coming in and going out on a SIP trunk; 
RTP being used for Video in addition to Audio.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.