call not getting disconnected after hanging up the phone cisco

[techguy]

Hi,

I am using cisco ip hones 7911 and 7962 registered in CUCM 7.1.5. When i hang up the phone call should disconnect/cut. But its not happening.

[Manish Gogna]

What is the cucm version?

Which type of calls are affected, internal or external or both?

In case the calls are external, what is the exact call flow , does it involved a PRI / FXO / SIP trunk ?

If it was working fine earlier then any recent changes that you can think of prior to noticing the issue?

HTH

Manish

[techguy]

Internal calls are affected.

[Manish Gogna]

If only internal calls are affected then some of the possible reasons could be a signaling delay from cucm itself or some issue with the IP phone. A couple of things you can try are a restart of ccm service on callmanager servers and firmware upgrade on the IP phones. If it has been done already then you need to get detailed call manager traces for a test call to check if the cucm is doing the signaling part correctly.

HTH

Manish