[asterisk-users] debug strategy for one-way audio calls

[Marie Fischer]

On 04.05.2013, at 20:20, Olivier <oza_4h07 at yahoo.fr> wrote:
> Le 2 mai 2013 13:23, "Marie Fischer" <marie at vtl.ee> a écrit :
>> 
>> from time to time, we get so-called simplex / one-way audio calls, where one party cannot hear the other. The only thing in common is that is does happen with calls via SIP trunk, not ISDN and not internal calls. Nothing strange in verbose and SIP logs. Could even be some weird intermittent firewall issue I guess.
>> 
> Which audio flow is missing ? Inbound ?
> 
> I suppose it should be easier to automatically detect missing inbound audio.

Not sure about older calls, but outbound was missing the last few times. We use call recording via MixMonitor and the recording has both flows, so I guess rtp debug would have shown both as well.

>> Apart from logging all traffic 24/7 via tcpdump (not really convenient), can you give me some ideas how to debug this kind of issue?
>> Asterisk 1.8.11-cert10 on CentOS 6.3, if that matters.

-- 

marie