CDR records don't track calls made and caller hangs up before called party answers.

[jamize1981]

We have been asked to provide a list of calls made by certain numbers within Call Manager to specific outside numbers.  When we run reports in CDR, we are finding it only shows calls that are answered by the far end....off site number.  If a person on a VoIP phone places an outside call and then hangs up before the called party answers, it doesn't show up in CDR records.  Does anyone know of a way to pull that information even if the call was several weeks prior?

Thanks,

Jeff

[Ratheesh Kumar]

You can try enabling the 'CDR Log Calls with Zero Duration Flag' under CUCM Service Parameters. Unfortunately since you had that disabled, you don’t have any options to trace the previous calls. Future calls with zero duration can be traced out.

Hope this Helps
Cheers
Rath!

***Please rate helpful posts***

[jamize1981]

Thank you for the quick response.  That did it. 

[HARIS_HUSSAIN · Accepted solution]

1)  You have to Enable CDR Calls with Zero Duration Flag As Below. Note This you have to do on the Publisher & Subscriber Separately. Once Done Now Onwards You will be able to see the Calls in CDR.

2)  The call which you made earlier will not come in CDR. Only Option is to search for the Logs for these Calls. So If you lucky to have the CUCM Call Manager Logs till covering the duration you intend then this might workout for you. 

      2.1) First Go to RTMT and check the duration for Which you have CUCM Logs.

https://www.youtube.com/watch?v=ucp2ymzsrUg

      2.2) Download the logs and Use Translator to find the relevant calls. 

https://community.cisco.com/t5/collaboration-voice-and-video/displaying-a-list-of-calls-in-translatorx/ta-p/3165152

3) If it is recent call you can all see the call history in Voice Gateway provided the call is routed via some of VG.  Simply use. Note this will have only recent calls. So this might not be useful.

show call history voice compact.

You can use below command to increase the call history buffer of the Voice Gateway

dial-control-mib retain-timer 35791

dial-control-mib max-size 1200

*****Please make sure to Mark Helpful or Choose as answered as applicable.

[jamize1981]

Thank you for the detailed response.  Your information showed me exactly where to go and added additional information on pulling trace files.