Cisco IP phones restarts when computer is shutting down

[Yuriy Dyshlevoy]

Hello!

All of our IP phones (79 series, 78 series, 69 series, 99 series) are reloaded (have "Unregistred" status) when computer restarts or shuts down. Computer is connected to the phone switch.

At this momet I have log from port of the switch:

015267: Sep  8 20:24:39: %LINEPROTO-5-UPDOWN: Line protocol on Interface Gigabit Ethernet1/0/4, changed state to down
015268: Sep  8 20:24:40: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/4, changed state to down
015269: Sep  8 20:24:44: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/4, changed state to up
015270: Sep  8 20:24:45: %LINEPROTO-5-UPDOWN: Line protocol on Interface Gigabit Ethernet1/0/4, changed state to up

Can someone help me here? Thank you!

[Manish Gogna]

Hi Yuriy,

Can you check if you are running a firmware with the fix for the following bug for 89XX and 99XX IP phones

https://tools.cisco.com/bugsearch/bug/CSCun07540/?reffering_site=dumpcr

If the issue is seen with the firmware containing the fix then you need to get packet captures from the switchport while recreating the issue.

Manish

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[Yuriy Dyshlevoy]

Manish, we are using one of the latest software version - sip8961.9-4-2-13.

[saif musa]

Computer must be connect to PC port on the phone.