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Cisco Bug: CSCuw56196 - Ad-hoc conference, multiple m-lines in INVITE from Conductor

Last Modified

Mar 29, 2017

Products (2)

  • Cisco TelePresence Conductor
  • Cisco TelePresence Conductor Model

Known Affected Releases


Description (partial)

Ad-hoc 3-WAY conference, multiple m-lines in INVITE from Conductor

In 3-way ad-hoc conference,  SIP INVITEs from the conductors contain multiple m-lines in SDP for same media,  some with valid port and some with value 0. it cause intermittent call failures in CUCM.

Eps----------CUCM-LEAF--------------Conductors pair----------MCU

CUCM Version: : 
Conductor Version:      XC4.0 & XC4.1/Pre-Aplha 
TP-MCU 5320  Vesrion 4.5(1.72)


-> Initial Setup:
Phone-A --------------------------------Phone-B
-> Conference initiate:
Final Setup:
Phone-A---------Phone-B--------Phone-C ( Talking through Conductor Conference resources)

SDP data looks like:

m=video 0 RTP/AVP 0
m=application 0 UDP/BFCP *
m=application 0 RTP/AVP 0
m=video 63030 RTP/AVP 99 126 97
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