[asterisk-users] Diagnosing dropped calls...

[Matt Riddell]

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John Faubion wrote:
>> Try dropping the IAX2 and only use SIP.  Don't ask "why?"  
> 
> Well in our case we were NOT using IAX at all. Strictly SIP.
> 
>> You could be hitting an overloaded router or whatever along 
>> the way, 10mbs fiber does not mean low latency or lost packets.
> 
> So true, hence the reason I suggested using mtr to check it. Many times in
> our case we saw gateways between networks that were dropping packets
> presumably  due to overload conditions. RTP traffic over UDP would add far
> more load than the ICMP packets used for mtr.

Yes and no.

I've seen pretty major problems show up in mtr only to be told that the
provider is dropping icmp in times of high load.

We moved our monitoring to sip/iax times, but you only get a point to
point stat in that situation.

- --
Kind Regards,

Matt Riddell
Director
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