[asterisk-users] DUNDi and reinvites...

[Douglas Garstang]

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Jared Smith
> Sent: Thursday, June 07, 2007 10:26 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] DUNDi and reinvites...
> 
> On 6/7/07, Douglas Garstang <DGarstang at interainc.com> wrote:
> > If I am using DUNDi for redundancy in a cluster, when Phone1 makes a
> call to
> > Phone2, both Asterisk A and B will be in the RTP stream:
> 
> Correct so far... although once the call is made, it's no longer a
> DUNDi question, and is simply a signalling question.  (In other words,
> DUNDi is used for Phone 1 to figure out how to connect to Phone 2, but
> after it's figured that out, it's a normal SIP or IAX call between
> Asterisk A and Asterisk B.)
> 
> > Is there a way configure re-invites in this situation so that either
> > Asterisk A or B drops out of the call, and there's only one Asterisk
box
> > between Phone1 and Phone2? Like this...
> 
> Yes, as long as the protocols are all the same.  If Phone1 is talking
> SIP to Asterisk A and Asterisk A is talking IAX to Asterisk B and
> Asterisk B is talking SIP to Phone 2, then it won't happen.  But
> assuming everything is using the same transport, they'll happen.  In
> fact, if re-invites are enabled on both Asterisk servers, and the two
> phones can communicate directly, you can re-invite *both* Asterisk
> servers out of the middle of the call.

Jared, we also don't want to reinvite all the way down to the two phones
communicating with each other. We want a single Asterisk system between
them. I just reconfigured my setup to send calls from Asterisk 1 to
Asterisk 2 with a callerid/From: different to the originating phone's,
just to get to the point where I can set reinvites up.

Let's just say we only configured the originating phone with
canreinvite=yes, which hopefully means the originating phone would
reinvite with the second Asterisk server. That's all fine and good until
it becomes the receiving phone, and the other phone (as an originator)
also has canreinvite set to yes. Then, your back to both Asterisk
servers being completely taken out of the loop again!

Doug