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Cisco Bug: CSCun41637 - Wrong ReasonForOutOfService after IP address lost

Last Modified

Jul 17, 2018

Products (30)

  • Cisco IP Phone 8800 Series
  • Cisco IP Phone 8851
  • Cisco Unified IP Phone 7962G
  • Cisco Unified IP Phone 7945G
  • Cisco Unified IP Phone 9951
  • Cisco IP Phone 7841
  • Cisco Unified SIP Phone 3905
  • Cisco Unified IP Phone 7941G
  • Cisco Unified IP Phone 6941
  • Cisco Unified IP Phone 6961
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Known Affected Releases


Description (partial)

Wrong ReasonForOutOfService after IP address lost

The ReasonForOutOfService is wrong after an IP address is lost.

1. Configure DHCP lease time = 60s on the DHCP server.

2. Power reset a phone.
    The phone restarts and registers to the CUCM.

3. Stop the DHCP server.
    The phone loses the IP address. And it registers to the CUCM with stateless IPv6 address.
    Before registration, REFERs with ReasonForOutOfService = 20 are sent to the CUCM.
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