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Cisco Bug: CSCtc16235 - 3951/3911 phones keep rebooting if config voice vlan

Last Modified

Mar 01, 2018

Products (1)

  • Cisco Unified IP Phone 6900 Series

Known Affected Releases

8.1(4)

Description (partial)

Symptom:
3951/3911 Phone can't boot up and continous reboot if config voice vlan in switchport.
If only config access vlan in switchport, phone can boot up and register to CUCM succesfully.
But I do find one phone, which can boot up and register to CUCM with voice vlan configed.

Conditions:
CCM Version:8.0.0
Phone Load: 8.1(4a)
Phone directly connect to switch port by cable.
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