Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Attention: The Community will be in read-only mode on 12/14/2017 from 12:00 am pacific to 11:30 am.

During this time you will only be able to see content. Other interactions such as posting, replying to questions, or marking content as helpful will be disabled for few hours.

We apologize for the inconvenience while we perform important updates to the Community.

New Member

CME 8 and 3945 router IOS 15.1.1 T

we are experiencing random phones that unregister with following error in log:

089919: Aug  5 15:31:18 EDT: %IPPHONE-6-UNREGISTER_ABNORMAL: ephone-60:SEP0026CBCXXXX IP:X,X.X.X Socket:168 DeviceType:Phone has unregistered abnormally.

we have been chasing our tails on this. network is saying its the router , CME team is saying its a network issue.

i did find this bug but its on a 3825 router with same IOS and CME version


Symptoms: Cisco IP phone users may experience dropped calls, resetting phones, and one-way audio.

Conditions: These symptoms are observed on a Cisco 3825 router that is running Cisco IOS Release 15.1(1)T and CME 8.0 when there are 4 or more active calls. The symptoms occur with the following topology:

Router/ PBX ---pri---- CISCO3825 ----sccp---- ip phone.

It is a normal external call: PSTN <-----> IP phone calls.

Workaround: Install Cisco IOS Release 12.4(15)XZ2 or another release earlier than Release 15.n.

Cisco Employee

Re: CME 8 and 3945 router IOS 15.1.1 T

I would recommend opening a TAC case and referecing the defect you think you're experiencing.  You should be able to work with the assigned engineer to resolve the issue.


CreatePlease to create content