Hello,
On 7/5/11 8:46 PM, Sunny wrote:
Hi list,
I'm trying to configure kamailio to work as a OBP (Outbound Proxy).
Basically KAMAILIO receive requests from UAs, after that it acts like
a client and send those requests to the IP-PBX.
On the same way the responses are forwarded from IP-PBX to the UAs.
[UA] --> [KAMAILIO] --> [IP-PBX ]
[UA] <-- [KAMAILIO] <-- [IP-PBX ]
Following possible call flow:
[UA ] -> [KAMAILIO] SIP/SDP Request: INVITE
sip:12345678909@[KAMAILIO], with session description
[KAMAILIO] -> [UA ] SIP Status: 100 Trying
[KAMAILIO] -> [IP-PBX ] SIP/SDP Request: INVITE
sip:12345678909@[IP-PBX ], with session description
[IP-PBX ] -> [KAMAILIO] SIP Status: 100 Trying
[IP-PBX ] -> [KAMAILIO] SIP Status: 407 Proxy Authentication Required
[KAMAILIO] -> [IP-PBX ] SIP Request: ACK sip:12345678909@[IP-PBX ]
[KAMAILIO] -> [UA ] SIP Status: 407 Proxy Authentication Required
[UA ] -> [KAMAILIO] SIP Request: ACK sip:12345678909@[KAMAILIO]
[UA ] -> [KAMAILIO] SIP/SDP Request: INVITE
sip:12345678909@[KAMAILIO], with session description
[KAMAILIO] -> [UA ] SIP Status: 100 Trying
[KAMAILIO] -> [IP-PBX ] SIP/SDP Request: INVITE
sip:12345678909@[IP-PBX ], with session description
[IP-PBX ] -> [KAMAILIO] SIP Status: 100 Trying
[IP-PBX ] -> [KAMAILIO] SIP/SDP Status: 183 Session Progress, with
session description
[KAMAILIO] -> [UA ] SIP/SDP Status: 183 Session Progress, with
session description
[IP-PBX ] -> [KAMAILIO] SIP/SDP Status: 180 Ringing, with session
description
[KAMAILIO] -> [UA ] SIP/SDP Status: 180 Ringing, with session
description
(...)
[UA ] -> [KAMAILIO] SIP Request: CANCEL sip:12345678909@[KAMAILIO]
[KAMAILIO] -> [UA ] SIP Status: 200 OK
[KAMAILIO] -> [IP-PBX ] SIP Request: CANCEL sip:12345678909@[IP-PBX ]
[IP-PBX ] -> [KAMAILIO] SIP Status: 200 OK
[IP-PBX ] -> [KAMAILIO] SIP Status: 487 Request Terminated
[KAMAILIO] -> [IP-PBX ] SIP Request: ACK sip:12345678909@[IP-PBX ]
[KAMAILIO] -> [UA ] SIP Status: 487 Request Terminated
[UA ] -> [KAMAILIO] SIP Request: ACK sip:12345678909@[KAMAILIO]
Wondering if anyone could help to make this configuration work?
what I understood from above is that you need to update the domain in
R-URI from [kamailio] to [ip-pbx]. This is easy to do:
$rd = [ip-pbx];
You have to do this for initial requests (register, invite).
If you need to update From header URI, look at uac module,
uac_replace_from().
Cheers,
Daniel
--
Daniel-Constantin Mierla -- http://www.asipto.com
Kamailio Advanced Training, Oct 10-13, Berlin: http://asipto.com/u/kat
http://linkedin.com/in/miconda -- http://twitter.com/miconda
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