[Asterisk-Users] Meetme and Sipura SPA-941 - bad jitter/distortion

[Ryan Booz]

I have a new * 1.2 server running on a dual-processor machine, 1GB of RAM,
Gentoo with Linux 2.6 and a Digium TDM400 (four fxo boards) installed.
Everything has been working great until we tried our first Meetme conference
call yesterday.

 

I have a total of 12 extensions.  9 of them are in the office with a direct
connection to the server, all of the phones are Polycom 501s.  The three
remote users have the new Sipura SPA-941.  I decided on this phone because
of the features and it was easy to setup behind NAT (which all of these
users have).  Regular calls to these users work great with no issues at all.
It's been wonderful.

 

However, we had our first company conference via Meetme yesterday, and the
SPA-941s sounded horrible in the conference.  Very distorted, jittery sound.
It was surprising and we ended up having them call in on the POTS line and
come in that way - and it sounded fine.  So, I thought maybe it was a
connection issue, but tested with one of our remote uses and have narrowed
it down to the phone.  If the user connects with X-lite to the conference
room the sounds is great.  If he then calls back with the SPA-941, the sound
is horrible.  Hanging up and dialing the extension directly to the SPA-941
sounds good as well.

 

Any ideas what could be going on and how to fix it.  I thought it could be a
timing thing.  The documentation on the Sipura phones is non-existent at the
moment, so I have no idea what might be able to be changed.

 

I'd greatly appreciate any help or thoughts!

 

Ryan Booz

Director of IT

Good Steward Software, LLC

111 Sowers Street, Suite 400

State College, PA 16801

Phone: 877-327-3702 x.26 (814-237-3744 x.26)

Fax: 719-623-0577

Visit us at www.energycap.com

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20051208/2a8c15a3/attachment.htm