How to clear a hung call on a CUCM?

[raziel78kain]

Hello,

we have noticed that we have a hung call on a CUCM 8.x, between a Cisco IP phone and another number on a SIP Server behind a SIP Trunk configured on the CUCM itself.

So, the scenario is the following: IPPhone-(SCCP)-CUCM-(SIP)-SIPTrunk-SIPServer

The problem is that the IP Phone is in idle state, but the call seems to be hung on the CUCM: in fact, if the SIP Server tries to send a re-invite for this call, it receives a 200 OK from the CUCM, thus the call is still active for the CUCM...

So, how can we clear this single call on the CUCM? Consider that we know the SIP Call-ID...

TIA and regards.

[Mohammed Khan]

These calls might have preserved due to network failure. You can restart Cisco Call manager Service. There is a new feature in 11.5, Highlighting it below for your reference.

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/11_5_1/cucm_b_release-notes-cucm-imp-1151/cucm_b_release-notes-cucm-imp-1151_chapter_010.html

Call Preservation Duration Management

A new service parameter called SIP Call Preservation Expires Timer is added in the Service Parameter Configuration window under the Clusterwide Parameters (Device-SIP) service area. This parameter specifies the number of seconds for which a call remains active in the call preservation state. The default value is 0, to enable this feature you have to configure this service parameter within the range of 1- 86400. If you choose to retain the default value, the call is preserved until you hang up or until the device can determine that the media connection has been released. See the online help for more information about the fields and their configuration options.

[raziel78kain]

Hello Mohammed,

unfortunately, we can't afford to restart the CUCM service, at the moment... Are you sure that there isn't any other way to clear the call?

Regarding the new feature, we'll keep it into account in the next CUCM installations, thanks.

Regards.

[Mohammed Khan]

Try resetting SIP Trunk

[Jaime Valencia]

There's no way in CUCM in which you can just say: tear down call #24

Just as you cannot just stop a conference going on, without having to deal with the whole CFB, and affecting other users who might be using it. CUCM doesn't provide a way to do any of that.