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Cisco Bug: CSCup99597 - ONE WAY AUDIO on secure call between a 6945 & Jabber in 15-20 mins

Last Modified

Nov 27, 2020

Products (11)

  • Cisco SIP IP Phone Software
  • Cisco Unified IP Phone 9951
  • Cisco Unified SIP Phone 3905
  • Cisco Unified IP Phone 6941
  • Cisco Unified IP Phone 6961
  • Cisco Unified IP Phone 8961
  • Cisco Unified IP Phone 8941
  • Cisco Unified IP Phone 8945
  • Cisco Unified IP Phone 9971
  • Cisco Unified IP Phone 6945
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Known Affected Releases


Description (partial)

There is one-way audio experienced when a secure call is placed between a 6945 phone & jabber. 

In this situation the phone is not able to hear the jabber user however the jabber user can hear the phone user, this is experienced on a call that lasts for around 15-20 mins.

In the phone console logs you would see the following

1329 ERR 15:24:09.238719 ms-SRTPIF.srtcpifUnprotect: failed with error code 7, session 25 
1330 ERR 15:24:09.238819 ms-RTCP-rtcpm_rcvPacket srtpUnprotect error 
1331 NOT 15:24:09.238905 ms-SRTPIF.srtpifDealloc, session 25

5364 ERR 08:28:50.865511 ms-RTPPKTMGR Rx stream block 7: Pkts discard decryption error

Secure call between 6945 phone & jabber that lasts for 15-20 mins
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