Trouble shoot dropped calls

[folllysurfer]

I have a few users that are part of the main number hunt group. Recently they have had random issues with calls dropping during a transfer. I have times and incoming caller ID's. How can I go about tracking down why caused the call to drop and how to implement a resolution.

Cisco Unified CM Administration
System version: 10.5.2.12901-1

Cisco Unified Intelligence Center
Version:10.6(1) build 1 (10_6_1_11003_29)

Cisco Unified Attendant Console
Administration Version: 10.5.2.690

[Jonathan Schulenberg]

Get an exact time stamp with calling/called number example and pull CUCM SDL traces as a starting point. They should give you a direction to start looking in. For example, if CUCM received a BYE from the PSTN gateway then it isn’t CUCM or the phone that dropped the call. Either the gateway dropped it or it in turn received a BYE from the carrier. Discerning that will likely requiring debuts on the gateway when it happens but CUCM is the easiest place to start.

[kukamara]

Hi folllysurfer,

Also if you can post the CUCM SDL logs for the same call, we can explain the logs, get you the disconnect cause code and resolution.

Thanks.

[folllysurfer]

https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/200787-How-to-Collect-Traces-for-CUCM-9-x-10-x.html

Based on this article, trace is not setup for the system. I have enabled it however will this  help with reports from last week? Is there another place I can retrieve the information in lieu of tracing not being enabled?

[kukamara]

I don't think so, if the required check boxes were not enabled, the system would not have generated the logs. You have to collect the logs hereafter.

Thanks,