[Kamailio-Users] Incoming T38 Public IP

[michel freiha]

Dear Sir,

My last issue is the following...The asterisk server replies by a second
INVITE that contains T38 in SDP to kamailio...Asterisk continue
retransmitting the INVITE to Kamailio with no reply from it as you can see
below:


Retransmitting #6 (no NAT) to Kamailio_IP:5060:
SIP/2.0 200 OK
Via: SIP/2.0/UDP
Kamailio_IP;branch=z9hG4bK02e7.7581e8a2.0;received=Kamailio_IP
Via: SIP/2.0/UDP 14.14.14.58:5060
;received=79.132.227.35;branch=z9hG4bK-ba26313a;rport=45068
Record-Route: <sip:Kamailio_IP;lr=on>
From: <sip:151355001 at Kamailio_IP>;tag=c75da877876e372i0
To: "092968050" <sip:092968050 at Asterisk_IP>;tag=as24bf1176
Call-ID: 6cb855a76b6ab33736cc85a83f9d7633 at Asterisk_IP
CSeq: 101 INVITE
User-Agent: domain name
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Contact: <sip:092968050 at Asterisk_IP>
Content-Type: application/sdp
Content-Length: 354

v=0
o=root 26580 26581 IN IP4 Asterisk_IP
s=session
c=IN IP4 Asterisk_IP
t=0 0
m=image 4338 udptl t38
a=T38FaxVersion:0
a=T38MaxBitRate:14400
a=T38FaxFillBitRemoval:0
a=T38FaxTranscodingMMR:0
a=T38FaxTranscodingJBIG:0
a=T38FaxRateManagement:transferredTCF
a=T38FaxMaxBuffer:122
a=T38FaxMaxDatagram:122
a=T38FaxUdpEC:t38UDPRedundancy

Kamailio enter in the following function:


onreply_route[7] {


if (status=~ "200"){
t_on_failure("1");
force_rtp_proxy();
}
exit;
}

I would like to know please what could be added in the onreply_route[7] in
order to accept T38 negotiation and let the FAX go through

Regards


On Fri, Mar 13, 2009 at 1:35 PM, Iñaki Baz Castillo <ibc at aliax.net> wrote:

> 2009/3/13 michel freiha <michofr at gmail.com>:
> > Hi Inaki,
> >
> > I'm getting the below error when using t_relay(); in
> > onreply_route[7]....Maybe i need to you something else?
> >
> > Mar 13 13:11:03 [27785] DBG:core:find_cmd_export_t: <t_relay> not found
> > Mar 13 13:11:03 [27785] DBG:core:find_cmd_export_t: found <t_relay>(0) in
> > module tm [/usr/local/lib/opensips/modules/]
> > Mar 13 13:11:03 [27785] CRITICAL:core:yyerror: parse error in config
> file,
> > line 728, column 9-10: Command cannot be used in the block
>                                                      ^^^^^
>                                   The error IS clearle explained, isn't?
>
> Please check the doc about t_relay():
>
>  http://www.kamailio.org/docs/modules/devel/tm.html#id2506628
>
>  "This function can be used from REQUEST_ROUTE, FAILURE_ROUTE."
>
>
> You can't use t_relay in on_replyroute (in fact you don't need it at
> all, t_relay is used to send *requests*).
>
> Again, please read the documentation and tutorials instead of trying
> anything with no reason.
>
> Regards.
>
> --
> Iñaki Baz Castillo
> <ibc at aliax.net>
>
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