[asterisk-users] [SOLVED] Re: CSipSimple audio issue with DAHDI/IAX2 calls

[Anthony Messina]

On 12/02/2011 11:37 AM, Anthony Messina wrote:
> I've just connected my new Android (Motorola RAZR) phone to Asterisk
> using CSipSimple and have discovered that on any call between CSipSimple
> and an Asterisk DAHDI or IAX2 channel, the 'other' end of the call will
> hear a rhythmic tapping as if my voice stream is being chopped up in
> equal parts about every 500ms or so. I can always hear the remote party
> without issue, regardless of the channel type.
> 
> The issue occurs only on connections to DAHDI channels (even those that
> don't pass through the PSTN), and IAX2 connections to remote Asterisk
> servers.
> 
> This issue occurs whether I am using WiFi, 3G or 4G connections on the
> Android.
> 
> This does NOT occur on any SIP channels, local to my Asterisk box, or to
> others.
> 
> I've investigated changing just about every setting on the Android with
> no resolution.  It seems like some sort of timing issue and is strange
> to me that this issue is confined to DAHDI and IAX2 channels, but I'm no
> expert.
> 
> I have tested using only res_timing_dadhi.so since I have the card, but
> that did not help either.
> 
> Would anyone be willing to point me in the right direction for resolving
> this issue?  Please let me know if any more information is required.
> Thanks in advance.  -A

Enabling the jitterbuffer=yes on the iax channel and setting
Set(JITTERBUFFER(fixed)=default) prior to any calls to DAHDI channels
seems to resolve the issue for now.

-- 
Anthony - http://messinet.com - http://messinet.com/~amessina/gallery
8F89 5E72 8DF0 BCF0 10BE 9967 92DC 35DC B001 4A4E

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