Hummm... I'll try to explain how thinks are tied together. Hoppefully it
helps.. ;)
SER recieves the INVITE through IP X, port 5060/UDP (normal SIP port),
identify that's from a NATed UA and prepare internal pointers. It also
recognize the prefix (in this case 9809) that flags the call to Yate. The
call is relayed to Yate who is listenning on IP X, but port 5080/UDP.
Now Yate initiate the negotiations as defined in its routing policy with its
H323 side. Yate is registering itself on GK1 as a Gateway (it's not a
permanent endpoint and uses IP X, port 1730/UDP) but, as I didn't find a way
to register a prefix from Yate itself I declare it in the
[RasSrv::GWPrefixes] section. So now the signalization part of the call is
already on H323 side.
Let's start other way around. T21 is registered as terminal on GK2 (normal
port), which is registered to GK1 (through normal port) with its own prefix
(47 in this case). T01 is also registered on GK1 (through normal port - the
port is changed on the first packet by IPTables), but as a terminal. Since
it's on my internal LAN, it's registered as a NATed point.
Now thinking back on the call, it arrives on GK1, and using trace level 6, I
see odd things:
1- the packet arrives and generates a ACF (that's ok);
2- the packet is analised and forwarded to GK1 (that's odd);
3- this forwarded packet is followed by all FastStart required packets
(that's ok);
4- this forwarded packet recieves a ReleaseComplete, since the port
assigned is already on use by another Q.931 channel (the packet arrived and
trated on 1 & 2);
5- call is Released with Q.931 error (not what I wanna, but what it
got);
6- SIP side recieves a 404 (number/user not found).
Forgive me if I didn't understand Your first question, but if You explain it
a little bit more, maybe I can provide You some valuable information.
Edson
_____
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of M.Emran
Sent: quarta-feira, 4 de julho de 2007 19:01
To: GNU Gatekeeper Users
Subject: Re: [Openh323gk-users] Q931 Error
Did u bridge yate with GK2 ?you have to register yate to GK2 or you have to
add yate ip to permanent endpoint with prefix...
On 7/5/07, Edson <[EMAIL PROTECTED]> wrote:
You are right in pointing this port problem...
At my first test Yate and GK1 were on the same machine, but I let GK1 on
port 1720 and changed Yate to port 1730.. didn't work. Then I move Yate to
SER machine. also didn't work. Know I have:
- SER and Yate on same machine in a Internet machine (SER on port 5060,
MediaProxyand on ports 51000~51600 and Yate on port 5080 and RTP on ports
60000~65000);
- GK1 on a machine in a Internet machine (all default ports);
- GK2 on my home border with ADSL connection.
So I doubt that there is some port issue. I was first thinking that it could
be some routing issue, but since I can make a call from T01, I give up from
this thinking path.
But again, thanks for Your thought.. Any other?
Edson
_____
From: [EMAIL PROTECTED] [mailto:
[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> ] On Behalf Of
M.Emran
Sent: quarta-feira, 4 de julho de 2007 17:21
To: GNU Gatekeeper Users
Subject: Re: [Openh323gk-users] Q931 Error
yate and gnugk are listening same port.try to change port from 1720 to 51720
of yate.
hope it will work.
On 7/5/07, Edson < [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > wrote:
Hi...
I need some help... I'm lost... This is my LAB scenario:
GK1 SER
/ | \ / \
/ | \ / \
GK2 T01 Yate UA1
|
|
T21
When I call T21 from T01, it rings and I can talk ok.
When I call T21 from UA1, I got error Q931, cannot alocate port xxxx,
already in use.
Any ideas on what's happening? I know that this same error is given when
there is no route to destiny, but it's not the case... I already rechecked
to ensure that there where no number/prefix errors.
Edson
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