4 Apr
2005
4 Apr
'05
2:13 p.m.
Vivienne,
From your config:
if (nat_uac_test("3")){
if (method == "REGISTER" || !
search("^Record-Route:")){
log("Log: Someone trying to register from private IP,rew
riting\n");
fix_nated_contact(); #Rewrite contact with source IP
if (method == "INVITE"){
fix_nated_sdp("1"); #Add direction=active to
SDP
};
force_rport(); # Add rport parameter to topmost Via
setflag(6); # Mark as Nated
};
Here you don't proxy the call, you just add the direction=active. If you want to rtp
proxy the calls, you need to have a force_rtp_proxy() for the initial INVITE. Read
section 1 of the Getting Started document at ONsip.org to understand what is supposed to
happen and how to read the SDP payload and see the rtpproxy example found in the document.
Your config will process the OK and proxy the rtp stream from the callee, but not the
caller's.
g-)
---- Original Message ----
From: Vivienne Curran
To: serusers(a)lists.iptel.org
Sent: Thursday, March 31, 2005 05:55 PM
Subject: [Serusers] Nathelper/Rtpproxy not working for two natted
clients
Hi,
I am having problems troubleshooting a problem I am experiencing with
my SER configuration. I have ser 0.8.14 running with rtpproxy and
nathelper enabled. I have two phones on the same subnet behind nat
and I would like to make a call between the two. I want to invoke
rtpproxy for this as they both have private address [I know this
isn't the most efficient way as they're both on the same subnet but I
can worry about that later].
When I ring from the phone 1 (2092) to phone 2 (2093), 2092 can hear
voice but 2093 can't. When 2093 ring 2092, there's no audio. These
phones are Grandstream BT100's. They have been configured to listen
on different SIP and RTP ports.
2092: SIP Port: 5060
2092: RTP Port: 5004
2093: SIP Port: 5061
2093: RTP Port: 5005
I have included my ser.cfg file the messages received on my SER
server (using ngrep SIP-q)in an attachment. I can confirm that my
rtpproxy is working (originally I thought it wasn't) by using "strace
-d <rtpproxy pid> -f -F". I can see a signal being returned.
Any help would be appreciated or advise as to how I can proceed
troubleshooting.
Kindest Regards,
Vivienne.
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