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Cisco Bug: CSCuq04973 - Phone stops steaming video after receiving flow control from CUCM

Last Modified

Aug 03, 2014

Products (34)

  • Cisco IP Phone 8800 Series
  • Cisco Unified Wireless IP Phone 7920
  • Cisco Unified IP Phone 7962G
  • Cisco Unified IP Phone 7945G
  • Cisco Unified IP Phone 9951
  • Cisco Unified IP Phone Expansion Module 7914
  • Cisco Unified IP Phone 7971G-GE
  • Cisco Unified IP Phone 6961
  • Cisco Unified IP Phone 7911G
  • Cisco Unified IP Phone 6941
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Known Affected Releases


Description (partial)

When Phone receives a Flow control message from CUCM due to change in bandwidth in between a video call it stops streaming video.

Already the device was streaming video with negotiated bandwidth, now it gets a flow control indicating a change of bandwidth. 
The end device which is video phone is not aware of how to handle this message and stops streaming video.

Seen with SCCP video phone 8945 with 9.3.4 load
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