Hi,

I asked some questions here about G.729 earlier in the week, and it looks like it would fit the bill for compressing audio between my * server in colocation and sip phone at home.

This is what I want my setup to look like.
(Wont make sense unless you are using a fixed width font)


    [my phone]              [asterisk]       [third parties]
    Snom 360    <----------> v 1.4 <-------------> ???
                     SIP               IAX/SIP
                     G.729             Don't care (probably something
                                       other than G.729, my preferred
supplier today likes ulaw and alaw)

My phone sees the * box over a relatively slow consumer connectivity link. The * box is colocated and has excellent connectivity. Therefore the tighter compression between * and my phone is important, hence why I want to use g.729 here.

The config for my phone, and my preferred voice supplier looks like this :

[[[from sip.conf]]]
[andydesk]
type=friend
context=default
secret=xxx
host=dynamic
dtmfmode=rfc2833
username=andydesk
mailbox=1001
vmexten=500
disallow=all
allow=g729
allow=alaw
allow=ulaw
allow=gsm
regexten=1001
allowreinvite=no

[[[from iax.conf]]]
[thing]
type=friend
host=dynamic
username=thing
secret=xxx
trunking=off
bridging=on
context=thing
disallow=all
allow=ulaw
allow=alaw
allow=gsm



When I place a call, the other party's line rings as normal. When the other party answers, I get a sip 'denied' packet, and the call is aborted. Asterisk says : No path to translate from SIP/mydeskphone to IAX/myprovider and Had to drop call because I couldn't make SIP/ mydeskphone ompatible with IAX/myprovider.

This looks similar to this bug :
  http://bugs.digium.com/view.php?id=8781&nbn=4

What I would expect to happen, is that Asterisk would transcode between the ulaw/alaw party, and me, wanting to listen via g729. Is this what *should* happen ? Worth noting that my provider does not support G.729. Is what is happening a bug ? Any patches I can try to see if they work ? Or is it my config which is broken ?

Inbound calls work ok, I guess this is because they are presented as alaw and asterisk is just passing them through (which of course isn't what i really want).

Thanks for any suggestions,
Andy


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