[asterisk-users] Understanding CHANNEL function values

[Patrick Lists]

On 25-08-12 14:31, Stefan at WPF wrote:
> Hello all,
>
> I need some help understand the values of the CHANNEL function, e.g.
>
>     txploss // local packets loss
>     rxploss // remote packets loss
>     txjitter  // local jitter
>     rxjitter  // remote jitter
>
>
> My main problem in understand is that a CHANNEL has two nodes (sender
> and receiver), while a typical setup includes at least 3 nodes:
> SIP phone - Asterisk - SIP Provider ( -> each is a node)
>
> 1) So e.g. txploss, is it
> - what is lost between SIP phone and Asterisk
> - what is lost between Asterisk and SIP Provider
> - or probably both?

I would assume that those statistics apply to a leg and not an 
end-to-end connection. So in your example I would assume that a txploss 
value is determined for the leg between the SIP phone and the Asterisk 
server and another txploss value is determined for the leg between the 
Asterisk server and the upstream SIP provider.

Interesting stuff. If you figure it all out, please update this thread 
(and possibly the wiki).

Regards,
Patrick