Cisco Phone goes on and off

[Yenosh]

Hi All, 

I have cisco 8841 Phone, it is going and off for every two min.

I found the ReasonForOutOfService=10    --  TCPtimedOut - The TCP connection to the Cisco Unified Communication Manager experienced a timeout error.

How to fix this? can any one please help me.

Best Regards,

Yenosh

[G3261]

Do you also have PC connected through this phone? Have you checked the interface activity on that switch port?

[Yenosh]

Hi 

yes system has connected to to the phone and on switch port status is showing "operational port trust status is now untrusted".

[G3261]

it could be QoS issue but I am not 100 percent sure. Have you tried connecting this phone different stack? How many phones are having this problem?

[Yenosh]

Hi I have connected phone at another desk still same issue.

[G3261]

another desk or another stack?

[Bal_S]

You may want to check this out:

https://community.cisco.com/t5/ip-telephony-and-phones/switch-qos-tb-5-trust-device-lost-affecting-7941-phones-only/td-p/2658700

[Ratheesh Kumar]

HI there

This troubleshooting guide should be handy for you

https://www.cisco.com/c/en/us/support/docs/collaboration-endpoints/ip-phone-7800-series/200850-Troubleshoot-Cisco-Phone-7800-8800-Serie.html

Hope this Helps

Cheers
Rath!
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