[asterisk-users] Calls in ulaw, not gsm as desired

[Salvatore Giudice]

It's probably not your codec. Do you have your asterisk box on a Voice VLAN
with priority queing configured? If you have mixed traffic on your uplink
without VLAN's and priority queuing (or possibly 802.1p), then your QoS will
suffer. Changing your codec to GSM will lower bandwidth consumption, but
late packets are still late packets. If you can, try to get a measurement of
latency to your peering provider before and after setting up QoS.

--------------------------------------------------
Salvatore Giudice
Salvatore.Giudice at VoIPSecurityTraining.com

VoIP Security Training, LLC
http://VoIPSecurityTraining.com

848 N. Rainbow Blvd. #1676
Las Vegas, NV 89107
Phone: (617) 959-7625
Fax: (214) 279-2906


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Rob Schall
Sent: Tuesday, May 01, 2007 11:58 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Calls in ulaw, not gsm as desired

My problem is this....

We have a location outside of our network which is done over vpn.
Everything works except for the voice quality to that location isn't
very good. To try to resolve this, I wanted to try to make all calls go
over gsm. Right now, when i say "show sip channels", they all show ulaw
signaling.

My setup is pretty basic. I have realtime setup with mysql. In the
sip.conf file, I did have disallow=all, allow=ulaw, allow=gsm. I removed
those lines from there and in my sip_buddies table, I made sure that the
extensions i'm using have disallow=all and allow=gsm.

However, even once I reloaded the extensions, its still only using ulaw.

Any thoughts?
Rob
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