[SR-Users-ES] Kamailio --> Mitel (Not Found) ¿Problemas con el INVITE?

Mie Sep 22 16:53:49 CEST 2010

Hola a todos!

Recurro a ustedes para ver si me pueden ayudar con este problema al cual no
le encuentro solucion:

Primero les muestro el esquema que poseo:

SIP PHONE (Linksys)   ---> Kamailio (1.5.4) ----> Mitel ----> Mitel Phone

Lo que quiero hacer es llamar desde la extension Linksys a traves de
Kamailio a una extension de la central propietaria Mitel. Actualmente Mitel
rechaza mis llamadas con un bonito 404 Not Found! lo cual es imposible
porque la extension Mitel existe y funciona bien.
Ademas, solo para probar, intente el mismo escenario, pero en vez de
utilizar Kamailio, puse un asterisk y funciona barbaro. Entonces... en algo
le estoy errando en Kamailio.

Hice unas capturas para que puedan ver si hay algun inconveniente con los
INVITES (por logica no deberian existir, pero por las dudas los pongo)

Primero una aclaracion sobre las IPs:

Sip Phone -> 100
192.168.10.140 -> Sip Phone
192.168.10.150 -> Kamailio
192.168.10.160 -> Mitel
Mitel Phone -> 200

Kamailio
U 192.168.10.140:5060 -> 192.168.10.150:5060
INVITE sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150> SIP/2.0.
Via: SIP/2.0/UDP 192.168.10.140:5060;branch=z9hG4bK-d063d53a.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=d396005aaf3ab9a2o0.
To: "Mitel Phone" <sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150>>.
Call-ID: d4de30ba-eb6944c2 [!at] 192.168.10.140 (replace the [!at] with a
@).
CSeq: 101 INVITE.
Max-Forwards: 70.
Contact: "Sip Phone" <sip:100 en 192.168.10.140:5060>.
Expires: 240.
User-Agent: Linksys/SPA941-5.1.8.
Content-Length: 395.
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
Supported: replaces.
Content-Type: application/sdp.

U 192.168.10.150:5060 -> 192.168.10.140:5060
SIP/2.0 100 Giving a try.
Via: SIP/2.0/UDP 192.168.10.140:5060
;branch=z9hG4bK-d063d53a;rport=5060;received=192.168.10.140.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=d396005aaf3ab9a2o0.
To: "Mitel Phone" <sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150>>.
Call-ID: d4de30ba-eb6944c2 [!at] 192.168.10.140 (replace the [!at] with a
@).
CSeq: 101 INVITE.
Server: Kamailio (1.5.4-notls (i386/linux)).
Content-Length: 0.

U 192.168.10.150:5060 -> 192.168.10.160:5060
INVITE sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150> SIP/2.0.
Via: SIP/2.0/UDP 192.168.10.150;branch=z9hG4bKc17.8e746ba.0.
Via: SIP/2.0/UDP 192.168.10.140:5060
;rport=5060;received=192.168.10.140;branch=z9hG4bK-d063d53a.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=d396005aaf3ab9a2o0.
To: "Mitel Phone" <sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150>>.
Call-ID: d4de30ba-eb6944c2 [!at] 192.168.10.140 (replace the [!at] with a
@).
CSeq: 101 INVITE.
Max-Forwards: 69.
Contact: "Sip Phone" <sip:100 en 192.168.10.140:5060>.
Expires: 240.
User-Agent: Linksys/SPA941-5.1.8.
Content-Length: 395.
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
Supported: replaces.
Content-Type: application/sdp.

U 192.168.10.160:5060 -> 192.168.10.150:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 192.168.10.150;branch=z9hG4bKc17.8e746ba.0,SIP/2.0/UDP
192.168.10.140:5060
;rport=5060;received=192.168.10.140;branch=z9hG4bK-d063d53a.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=d396005aaf3ab9a2o0.
To: "Mitel Phone" <sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150>
>;tag=0_4044193584-65506210.
Call-ID: d4de30ba-eb6944c2 [!at] 192.168.10.140 (replace the [!at] with a
@).
CSeq: 101 INVITE.
Content-Length: 0.

U 192.168.10.160:5060 -> 192.168.10.150:5060
SIP/2.0 404 Not Found.
Via: SIP/2.0/UDP 192.168.10.150;branch=z9hG4bKc17.8e746ba.0,SIP/2.0/UDP
192.168.10.140:5060
;rport=5060;received=192.168.10.140;branch=z9hG4bK-d063d53a.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=d396005aaf3ab9a2o0.
To: "Mitel Phone" <sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150>
>;tag=0_4044193584-65506210.
Call-ID: d4de30ba-eb6944c2 [!at] 192.168.10.140 (replace the [!at] with a
@).
CSeq: 101 INVITE.
Contact: <sip:192.168.10.160>.
Content-Length: 0.

Lo mismo pero con Asterisk (que si funciona)
*
*
U 192.168.10.140:5060 -> 192.168.10.150:5060
INVITE sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150> SIP/2.0.
Via: SIP/2.0/UDP 192.168.10.140:5060;branch=z9hG4bK-d5c5100f.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=59178c25144180dfo0.
To: "Mitel Phone" <sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150>>.
Call-ID: 5f5d6a1d-6b287b47 [!at] 192.168.10.140 (replace the [!at] with a
@).
CSeq: 102 INVITE.
Max-Forwards: 70.
Proxy-Authorization: Digest
username="100",realm="asterisk",nonce="3ed77171",uri="sip:200 en 192.168.10.150<sip%3A200 en 192.168.10.150>
",algorithm=...
Contact: "Sip Phone" <sip:100 en 192.168.10.140:5060>.
Expires: 240.
User-Agent: Linksys/SPA941-5.1.8.
Content-Length: 397.
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER.
Supported: replaces.
Content-Type: application/sdp.

U 192.168.10.150:5060 -> 192.168.10.140:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 192.168.10.140:5060
;branch=z9hG4bK-d5c5100f;received=192.168.10.140.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=59178c25144180dfo0.
To: "Mitel Phone" <sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150>>.
Call-ID: 5f5d6a1d-6b287b47 [!at] 192.168.10.140 (replace the [!at] with a
@).
CSeq: 102 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO.
Supported: replaces.
Contact: <sip:200 en 192.168.10.150 <sip%3A200 en 192.168.10.150>>.
Content-Length: 0.

U 192.168.10.150:5060 -> 192.168.10.160:5060
INVITE sip:200 en 192.168.10.160 <sip%3A200 en 192.168.10.160> SIP/2.0.
Via: SIP/2.0/UDP 192.168.10.150:5060;branch=z9hG4bK5c9bfd49;rport.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=as749996b5.
To: <sip:200 en 192.168.10.160 <sip%3A200 en 192.168.10.160>>.
Contact: <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>>.
Call-ID: 59dfcf505cb2671977c8c9175f50c96e [!at] 192.168.10.150 (replace the
[!at] with a @).
CSeq: 102 INVITE.
User-Agent: Asterisk PBX.
Max-Forwards: 70.
Date: Wed, 22 Sep 2010 12:36:12 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO.
Supported: replaces.
Content-Type: application/sdp.
Content-Length: 235.

U 192.168.10.160:5060 -> 192.168.10.150:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 192.168.10.150:5060;branch=z9hG4bK5c9bfd49;rport.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=as749996b5.
To: <sip:200 en 192.168.10.160 <sip%3A200 en 192.168.10.160>
>;tag=0_3844423584-65506194.
Call-ID: 59dfcf505cb2671977c8c9175f50c96e [!at] 192.168.10.150 (replace the
[!at] with a @).
CSeq: 102 INVITE.
Content-Length: 0.

U 192.168.10.160:5060 -> 192.168.10.150:5060
SIP/2.0 180 Ringing.
Via: SIP/2.0/UDP 192.168.10.150:5060;branch=z9hG4bK5c9bfd49;rport.
From: "Sip Phone" <sip:100 en 192.168.10.150 <sip%3A100 en 192.168.10.150>
>;tag=as749996b5.
To: <sip:200 en 192.168.10.160 <sip%3A200 en 192.168.10.160>
>;tag=0_3844423584-65506194.
Call-ID: 59dfcf505cb2671977c8c9175f50c96e [!at] 192.168.10.150 (replace the
[!at] with a @).
CSeq: 102 INVITE.
Contact: <sip:200 en 192.168.10.160:5060;transport=udp>.
Content-Length: 0.
*
*La configuracion de Kamailio es default. Basicamente consulto por el numero
ingresado, si es 200 lo envio para la Mitel:

route[2]{
        force_rport();
        if (nat_uac_test("19")) {
                if (method=="REGISTER") {
                        fix_nated_register();
                } else {
                        fix_nated_contact();
                };
                setflag(5);

                if (is_method("INVITE") && $rU =~ "200"){
                        force_rtp_proxy();
                        t_on_failure("1");
                        route(5);
                };

        };
}

route[5] {
        t_relay("udp:192.168.2.1:5060");
        t_on_reply("1");
        exit;
}

Tienen idea si me esta faltando algo???

Les agradecere cualquier ayuda.
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