Although not easy on a production system, your best bet is to catch the behavior in the act. Usually this means that you have to rely upon humans to report the symptoms to you in a timely and accurate manner. 

One way you can help track these down is to use something like pcapsipdump and do a ring buffer that covers at least several days. Then, when you hear about a symptom you can go back and look at the corresponding pcap file which will have both signaling and audio. From there you can hopefully trace the root of the problem.

-MC

http://wiki.freeswitch.org/wiki/Packet_Capture#pcapsipdump

On Fri, Oct 28, 2011 at 9:19 AM, Jason Moran <jmoran@secureachsystems.com> wrote:

I have some questions about the types of statuses we are getting (Yes, I’m already familiar with http://wiki.freeswitch.org/wiki/Hangup_causes )

 

We just deployed FS to production a couple of days ago and here is a sample of our Hangup Causes:

CALL_REJECTED                1

NO_ANSWER     738

NO_USER_RESPONSE    175

NORMAL_CLEARING      1667 (Expected that this is only Early Hangups)

NORMAL_TEMPORARY_FAILURE             4

NORMAL_TEMPORARY_FAILURE (Rang)               37 (Rang means this status happened more than 5 seconds after the session was started)

Complete            224  (Complete is our own status instead of NORMAL_CLEARING, meaning WE hung up because we finished the entire message).

ORIGINATOR_CANCEL (Rang)    3

RECOVERY_ON_TIMER_EXPIRE (Rang)   9

UNALLOCATED_NUMBER            2

USER_BUSY        35

 

My questions:

1.       NORMAL_TEMPORARY_FAILURE happens a lot, and often returns 30 or more seconds after starting. Could this be a “silent call” (etc)? We have gotten 3-4 complaints of silent calls and I’m hoping to find the cause.

2.       Is there anything here (or ideas elsewhere?) to explain why a call will be silent once in a while?

3.       Is this spread of causes normal or does it seem strange

4.       We’ve had a few people note that the message on their voicemail is over before they can hear it - even though we play the message twice (to make short messages longer). Does anybody know of a solution for this?

 

Thanks! -Jason

 



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