ip phone registered and unregistered continuously

Unanswered Question
Sep 16th, 2011


i am using callmanager 7.1 and all my remote sites are continously registered and unregistered continously.

can any one tell me what is the solution to make it stable

the frimware is also not updating. is this a problem for continous registered and unregistered of remote site ip phone.


I have this problem too.
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Jaime Valencia Fri, 09/16/2011 - 20:17

I'd start by looking at my basic connectivity, BW and QoS settings to make sure signaling is getting the right amount of BW.

Look at the app log for the unregistered events and that might give you a hint of what's causing this.



if this helps, please rate


Tapan Dutt Sat, 09/17/2011 - 11:23

Hi Parveen

This seems to be a problem with your network. Your WAN link is probably flapping. There isint a problem with Call Manager or the Phone. Look at Layer 3 and Layer 2 Devices and Layer 1 rather than looking for a problem on Call Manager or phones for that matter.



praveengvk Sat, 10/01/2011 - 22:41


thanks for your reply

while using cucm 4.3 there is no problem. This problem is only with cucm 7.1

if there is bw or wan connectivity problem how it's work on cucm 4.3


oracat777 Sun, 10/02/2011 - 09:53


i got the problem when i only permited the ospf traffic which through the transparent ASA in one way only, so the network flapping, and the phones are registered and unregistered continously.

could you ping the remote phone from the CUCM vlan, and make sure it is always OK ?

and what is the frequency of the phones are registered and unregistered continously ?



praveengvk Mon, 10/03/2011 - 19:20


thanks for reply

in my network there is no ospf, and asa

this connection was based on static routing protocol



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