[asterisk-users] RTPAUDIOQOS

Tilghman Lesher tlesher at digium.com
Tue Sep 22 12:13:01 CDT 2009


On Tuesday 22 September 2009 10:42:44 Johann Steinwendtner wrote:
> Mindaugas Kezys schrieb:
> > Check this link:
> > http://wiki.kolmisoft.com/index.php/RTPAUDIOQOS_Demystified
>
> In the given example:
> *ssrc=254186206;themssrc=2024901615;lp=0;rxjitter=0.020917;rxcount=150;txji
>tter=0.000000;txcount=83;rlp=0;rtt=14818.715000* How do I interprete the
> jitter value ? Is the value 0.020917 good ? Bad ? Is there a unit behind
> this value ?

It's a ratio of out-of-order (jittered) to in-order packets, calculated
progressively.  Due to the progressive calculation, it's not exactly 3/147, in
this case, but it's close enough to know that 3 packets were received
out-of-order.  The closer the value is to 0, the better.

-- 
Tilghman Lesher
Digium, Inc. | Senior Software Developer
twitter: Corydon76 | IRC: Corydon76-dig (Freenode)
Check us out at: www.digium.com & www.asterisk.org



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