[Asterisk-Users] PassThrough mode

[David Liu]

Hi Vincent,

This shouldn't be difficult.  Try the following:
in sip.conf

[user1]
username=user1
secret=password
nat=yes
disallow=all
allow=g723.1

[user2]
username=user1
secret=password
nat=yes
disallow=all
allow=g723.1

This will force both users to be in G723.1 mode and it should pass thru 
without problems.

Note that if you are trying to do transcoding, as in one client wants to talk 
in G723.1 and the other say in G711 ulaw, then you will get a complain on 
console saying no compatible codec.

David Liu


On Tue, 28 Dec 2004 19:16:36 +0800, receive4me wrote
> Hi David,
> 
> Thanks for your info. May I know what you have done to make sure 
> calls are in passthru mode but not in translated mode? In my config, 
> NAT=yes for peers were all enabled. However, I heard no voice when 
> either one side or both sides were behind NAT.
> 
> Thanks.
> 
> Vincent
> 
> On Tue, 28 Dec 2004 11:58:38 +0800, David Liu <david at deltapath.com> wrote:
> > Hi Vincent,
> > 
> > Yes it works.  I have tried that before with 2 BT101 talking at G723.1
> > through Asterisk where nat=yes
> > 
> > David
> > 
> > receive4me at gmail.com wrote:
> > 
> > >Hi all,
> > >
> > >I am wondering how to get PassThrough working in a NAT environment.
> > >
> > >Many Thanks.
> > >
> > >Vincent
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