[Asterisk-Users] IAX users

[Whisker, Peter]

SIP is a XML-like control channel and is used to negotiate a separate RTP
channel which carries the audio. It is complicated to set-up in cases of
firewalls and NAT, but is an open standard.

IAX2 is a candidate open standard and merges all traffic onto a single UDP
stream - control and audio data. It has two modes, trunk and non-trunk.
Trunk mode is highly efficient for transmitting multiple calls on a single
UDP bearer and has minimal overhead. Standard IAX2 is easier to set-up than
SIP. In terms of user experience, there should be little difference in call
handling and audio quality - in general all of the same codecs and features
are supported.

IAX2 is a  native protocol of Digium's Asterisk switch and I believe stands
for Inter-Asterisk-eXchange version 2.

To answer the query below, IAX (ie IAX11) was the precursor of IAX2. It is
obsolete and should no longer be used. I use IAX when referring to IAX2, but
obviously not all do!

HTH
Peter

-----Original Message-----
From: Serge Schumacher [mailto:serge at vonet.lu]
Sent: 31 December 2004 15:41
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: RE: [Asterisk-Users] IAX users


Sorry ?

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Steve Totaro
Sent: vendredi 31 décembre 2004 16:29
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] IAX users

IAX2


----- Original Message ----- 
From: "Serge Schumacher" <serge at vonet.lu>
To: "'Asterisk Users Mailing List - Non-Commercial Discussion'"
<asterisk-users at lists.digium.com>
Sent: Friday, December 31, 2004 8:00 AM
Subject: [Asterisk-Users] IAX users


> Hi,
>
> I do not understand the difference between SIP and IAX, is it only two
> different protocols or something more special.
>
> The problem I have is that I've created two users
>
>
> Aix.conf
>
> register => users1:passwd1
> register => user2:passwd2
>
> [user1]
> type=user
> context=default
> secret=passwd1
> host=dynamic
>
>
> [user2]
> type=user
> context=default
> secret=passwd2
> host=dynamic
>
> extensions.conf
>
> exten => 550,1(Dial,IAX/user1);
> exten => 551,1(Dial,IAX/user2);
>
> and the error I get :
>
>
> Dec 31 15:03:16 WARNING[2885]: pbx.c:1280 pbx_extension_helper: No
> application 'IAX/user1)' for extension (default, 550, 1)
> == Spawn extension (default, 550, 1) exited non-zero on
> 'IAX2/user2 at 10.0.0.150:1059/1'
> -- Hungup 'IAX2/user2 at 10.0.0.150:1059/1'
>
> Can someone help me how to get both users connected ?
>
> Thank you,
>
>
>
>
>
>
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