[asterisk-users] Best timing source?

Joshua Colp jcolp at digium.com
Tue Apr 5 15:17:08 CDT 2016

Carlos Chavez wrote:
> I am currently having a voice quality problem with one of our Asterisk
> servers. We have checked the network and we have found no problems that
> could cause the voice to sound cracked and with small interruptions. I
> am looking at the timing source for Asterisk and it is currently using
> timerfd even though we have an E1 card installed. Is timerfd better than
> dahdi? Any recommendations to test if timing may be a problem for voice
> quality and DTMF?

What is the scenario and the channels involved? Timing is only used for 
things such as playback, music on hold, and ConfBridge. If it's strictly 
a two party call then Asterisk forwards media as received.

Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

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