[Serusers] newbie question

[Dave Bath]

What codecs are you using? By default xlite will use G711 which is a
64kbps + overheads codec.  If you have a congested line this may well be
unsustainable.  As far as I know, Skype uses a much lower rate codec by
default.  Try switching to something like GSM in xlite and rerun the
tests.

Dave

-----Original Message-----
From: serusers-bounces at iptel.org [mailto:serusers-bounces at lists.iptel.org] On
Behalf Of Dimitri Georganas
Sent: 19 August 2004 06:38
To: serusers at lists.iptel.org
Subject: [Serusers] newbie question

I did a test last week:

setup: 2 computers on separate locations, on both installed: Skype and 
XTen's free sip phone: x-lite, 1 SERr server on a third location
Linksys WRT54g router on one location, Cisco SOHO78 on the others. No
QoS.

test: voice connection with skype between the two computers: perfect 
quality


test2 voice connection with x-lite between the two computers: After 
authorizing both computers on the third server,
the established connection showed terrible quality...long silence during

phonecalls.

First I thought that the actual x-klite/sip voice traffic is routed 
through the server and since the server was heavily loaded and the 
router didn't have QoS, the bad quality was explainable. Later I heard 
that the actual voice traffic is not routed through the ser server, but 
goes directly from one computer through the other.

Now if the latter is true, how can one explain the quality difference 
between skype and x-lite/sip ?

Thanks in advance for your answers.






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