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Cisco Bug: CSCuj04191 - 3905 Phone sip module,SRST, re- registration thread and failover thread

Last Modified

May 02, 2018

Products (11)

  • Cisco IP Phone 8800 Series
  • Cisco Unified IP Phone 9951
  • Cisco Unified SIP Phone 3905
  • Cisco Unified IP Phone 6961
  • Cisco Unified IP Phone 6941
  • 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

9.3(1) 9.4(1)

Description (partial)

Intermittently, 3905 phone fails to register back to CUCM, after coming out of SRST mode

3905 phone looses WAN connectivity to CUCM
Phone registers to Local SRST Router
Once WAN connectivity is restored, phones try registering back to CUCM
While registering back, intermittently, some 3905 fail to register back

Related Community Discussions

3905 SRST Issues
Hello everyone We have a problem with the phones model 3905 from a remote site of our end customer. When the WAN link of this site is unavailable, phones register without problems at the local voice gateway (a ISR model 2901). The problem occurs when the WAN link is retrieved, some phones re-register with CUCM, while others remain registered at the local voice gateway (this happens randomly). The phones that remain registered in the voice gateway only re-register with CUCM if they disconnect and ...
Latest activity: Apr 25, 2017
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