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Cisco Bug: CSCuw38872 - CE mode phone be un-registered after failing to register to CUCM sub

Last Modified

Oct 28, 2015

Products (42)

  • Cisco IP Phone 7800 Series
  • Cisco IP Phone 8851
  • Cisco IP Phone 8865
  • Cisco Unified IP Phone 7971G-GE
  • Cisco Unified IP Phone 7945G
  • Cisco Unified SIP Phone 3905
  • Cisco IP Phone 7841
  • Cisco Unified IP Phone 7962G
  • Cisco Unified IP Phone 9951
  • Cisco IP Phone 7821
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Known Affected Releases


Description (partial)

CE mode phone be un-registered after failing to register to CUCM sub

1. Inject some kind of error between the Expressway C 2 and the CUCM pub, so that the connection between the two servers is broken.
2. Power on a 7861 phone and login CE.
    The phone registers to the CUCM pub, but it can't registers to CUCM sub and gets 403.
3. Leave the phone idle.
    After some time, the phone become unregistered to the CUCM. But the phone screen shows that it is registered.  //Faulty//
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