Re: Basic Configuration

smh2017--- via sr-users <[email protected]>
Newsgroups gmane.comp.voip.ser
Message-ID <[email protected]> 
Below are some SIP snippets from both a successful call and a failed call:

Successful call from External (Internet) UA to Internal UA behind same NAT router as Kamailio server

Frame 77 (External UA Caller to Kamailio Server)
Session Initiation Protocol (INVITE)
    Request-Line: INVITE sip:[email protected] SIP/2.0
        Method: INVITE
        Request-URI: sip:[email protected]
        [Resent Packet: False]
    Message Header
        Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0
        [Generated Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0]
        CSeq: 2 INVITE
            Sequence Number: 2
            Method: INVITE
        From: "Think" <sip:[email protected]>;tag=da48a35
            SIP from display info: "Think"
            SIP from address: sip:[email protected]
            SIP from tag: da48a35
        To: <sip:[email protected]>
            SIP to address: sip:[email protected]
        Max-Forwards: 70
        Contact: "Think" <sip:[email protected]:49872;transport=tcp;registering_acc=pub-domain-net_net>
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Type: application/sdp
        Via: SIP/2.0/TCP 192.168.9.150:49872;branch=z9hG4bK-363937-300d55dbdefe8ad301c7961b7c4c0e8a
        Proxy-Authorization: Digest username="think",realm="pub-domain-name.net",nonce="aHqfVWh6nikvR+zIKjSHaJPKD8Hlgooy",uri="sip:[email protected]",response="b7d5db659208fcbfdd3b441e869bc253"
        Content-Length: 550
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): think-jitsi.org 0 0 IN IP4 192.168.9.150
            Session Name (s): -
            Connection Information (c): IN IP4 192.168.9.150
                
Frame 80 (Kamailio Server to Internal UA callee; external UA public ip address added to Contact header as alias)
Session Initiation Protocol (INVITE)
    Request-Line: INVITE sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net SIP/2.0
        Method: INVITE
        Request-URI: sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net
        [Resent Packet: False]
    Message Header
        Record-Route: <sip:pub-domain-name.net;transport=tcp;lr=on;nat=yes>
        Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0
        [Generated Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0]
        CSeq: 2 INVITE
            Sequence Number: 2
            Method: INVITE
        From: "Think" <sip:[email protected]>;tag=da48a35
            SIP from display info: "Think"
            SIP from address: sip:[email protected]
            SIP from tag: da48a35
        To: <sip:[email protected]>
            SIP to address: sip:[email protected]
        Max-Forwards: 69
        Contact: "Think" <sip:[email protected]:49872;transport=tcp;registering_acc=pub-domain-net_net;alias=172.59.210.229~28301~2>
            SIP C-URI display info: "Think"
            Contact URI: sip:[email protected]:49872;transport=tcp;registering_acc=pub-domain-net_net;alias=172.59.210.229~28301~2
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Type: application/sdp
        Via: SIP/2.0/TCP pub-domain-name.net:5060;branch=z9hG4bK5818.37b0c4a1d32535a805caaa6cc7d97071.0;i=6
        Via: SIP/2.0/TCP 192.168.9.150:49872;rport=28301;received=172.59.210.229;branch=z9hG4bK-363937-300d55dbdefe8ad301c7961b7c4c0e8a
        Content-Length: 594
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): think-jitsi.org 0 0 IN IP4 73.150.xxx.xxx
            Session Name (s): -
            Connection Information (c): IN IP4 73.150.xxx.xxx
               
Frame 91 (Internal UA callee to Kamailio Server: 200-OK)
Session Initiation Protocol (200)
    Status-Line: SIP/2.0 200 OK
        Status-Code: 200
        [Resent Packet: False]
        [Request Frame: 80]
        [Response Time (ms): 4837]
    Message Header
        CSeq: 2 INVITE
            Sequence Number: 2
            Method: INVITE
        Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0
        [Generated Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0]
        From: "Think" <sip:[email protected]>;tag=da48a35
            SIP from display info: "Think"
            SIP from address: sip:[email protected]
            SIP from tag: da48a35
        To: <sip:[email protected]>;tag=a160389a
            SIP to address: sip:[email protected]
            SIP to tag: a160389a
         […]Via: SIP/2.0/TCP pub-domain-name.net:5060;branch=z9hG4bK5818.37b0c4a1d32535a805caaa6cc7d97071.0;i=6;received=73.150.xxx.xxx;rport=5060,SIP/2.0/TCP 192.168.9.150:49872;rport=28301;received=172.59.210.229;branch=z9hG4bK-363937-300d55d
        Record-Route: <sip:pub-domain-name.net;transport=tcp;lr=on;nat=yes>
        Contact: "wow" <sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net>
            SIP C-URI display info: "wow"
            Contact URI: sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Type: application/sdp
        Content-Length: 546
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): wow-jitsi.org 0 0 IN IP4 192.168.2.13
            Session Name (s): -
            Connection Information (c): IN IP4 192.168.2.13
                Connection Network Type: IN
                Connection Address Type: IP4
                Connection Address: 192.168.2.13
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 5000 RTP/AVP 96          

Frame 92 (Kamailio server to External UA caller: 200-OK)
Session Initiation Protocol (200)
    Status-Line: SIP/2.0 200 OK
        Status-Code: 200
        [Resent Packet: False]
        [Request Frame: 77]
        [Response Time (ms): 4893]
    Message Header
        CSeq: 2INVITE
            Sequence Number: 2
            Method: INVITE
        Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0
        [Generated Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0]
        From: "Think" <sip:[email protected]>;tag=da48a35
            SIP from display info: "Think"
            SIP from address: sip:[email protected]
            SIP from tag: da48a35
        To: <sip:[email protected]>;tag=a160389a
            SIP to address: sip:[email protected]
            SIP to tag: a160389a
        Via: SIP/2.0/TCP 192.168.9.150:49872;rport=28301;received=172.59.210.229;branch=z9hG4bK-363937-300d55dbdefe8ad301c7961b7c4c0e8a
        Record-Route: <sip:pub-domain-name.net;transport=tcp;lr=on;nat=yes>
        Contact: "wow" <sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net>
            SIP C-URI display info: "wow"
            Contact URI: sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Type: application/sdp
        Content-Length: 1182
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): wow-jitsi.org 0 0 IN IP4 73.150.xxx.xxx
            Session Name (s): -
            Connection Information (c): IN IP4 73.150.xxx.xxx
                Connection Network Type: IN
                Connection Address Type: IP4
                Connection Address: 73.150.xxx.xxx
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 35010 RTP/AVP 96
                     
Frame 95 (External Caller UA to Kamailio Server: ACK of 200-OK)
Session Initiation Protocol (ACK)
    Request-Line: ACK sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net SIP/2.0
        Method: ACK
        Request-URI: sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net
        [Resent Packet: False]
        [Request Frame: 77]
        [Response Time (ms): 5144]
    Message Header
        Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0
        [Generated Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0]
        CSeq: 2 ACK
            Sequence Number: 2
            Method: ACK
        Via: SIP/2.0/TCP 192.168.9.150:49872;branch=z9hG4bK-363937-acd86ef1272918c02f80646a7ffd32c3
        From: "Think" <sip:[email protected]>;tag=da48a35
            SIP from display info: "Think"
            SIP from address: sip:[email protected]
            SIP from tag: da48a35
        To: "wow" <sip:[email protected]>;tag=a160389a
            SIP to display info: "wow"
            SIP to address: sip:[email protected]
            SIP to tag: a160389a
        Max-Forwards: 70
        Route: <sip:pub-domain-name.net;transport=tcp;lr=on;nat=yes>
        Contact: "Think" <sip:[email protected]:49872;transport=tcp;registering_acc=pub-domain-net_net>
            SIP C-URI display info: "Think"
            Contact URI: sip:[email protected]:49872;transport=tcp;registering_acc=pub-domain-net_net
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Length: 0

Frame 96 (Kamailio Server to Internal UA: ACK of 200-OK)
Session Initiation Protocol (ACK)
    Request-Line: ACK sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net SIP/2.0
        Method: ACK
        Request-URI: sip:[email protected]:50060;transport=tcp;registering_acc=pub-domain-net_net
        [Resent Packet: False]
        [Request Frame: 80]
        [Response Time (ms): 5101]
    Message Header
        Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0
        [Generated Call-ID: 5130c2963b8c1f46de2aa92e5ff3dee7@0:0:0:0:0:0:0:0]
        CSeq: 2 ACK
            Sequence Number: 2
            Method: ACK
        Via: SIP/2.0/TCP pub-domain-name.net:5060;branch=z9hG4bK5818.98ab28cca407d8483ad6a69389305265.0;i=6
        Via: SIP/2.0/TCP 192.168.9.150:49872;rport=28301;received=172.59.210.229;branch=z9hG4bK-363937-acd86ef1272918c02f80646a7ffd32c3
        From: "Think" <sip:[email protected]>;tag=da48a35
            SIP from display info: "Think"
            SIP from address: sip:[email protected]
            SIP from tag: da48a35
        To: "wow" <sip:[email protected]>;tag=a160389a
            SIP to display info: "wow"
            SIP to address: sip:[email protected]
            SIP to tag: a160389a
        Max-Forwards: 69
        Contact: "Think" <sip:[email protected]:49872;transport=tcp;registering_acc=pub-domain-net_net;alias=172.59.210.229~28301~2>
            SIP C-URI display info: "Think"
            Contact URI: sip:[email protected]:49872;transport=tcp;registering_acc=pub-domain-net_net;alias=172.59.210.229~28301~2
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Length: 0
RTP Connection finalized and succesful call is made.



Failed Call:
Frame 58 (Int->Ext UA Caller Invite to Kamailio Server)
Session Initiation Protocol (INVITE)
    Request-Line: INVITE sip:[email protected] SIP/2.0
        Method: INVITE
        Request-URI: sip:[email protected]
        [Resent Packet: False]
    Message Header
        Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0
        [Generated Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0]
        CSeq: 2 INVITE
        From: "WOW" <sip:[email protected]>;tag=b1fd2e81
        To: <sip:[email protected]>
        Max-Forwards: 70
        Contact: "WOW" <sip:[email protected]:53616;transport=tcp;registering_acc=pub-domain-name_net>
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Type: application/sdp
        Via: SIP/2.0/TCP 192.168.2.13:53616;branch=z9hG4bK-333030-96dd852a7c0145c94806d428bfd52f71
            Transport: TCP
            Sent-by Address: 192.168.2.13
            Sent-by port: 53616
            Branch: z9hG4bK-333030-96dd852a7c0145c94806d428bfd52f71
        Proxy-Authorization: Digest username="wow",realm="pub-domain-name.net",nonce="aIE222iBNa9LWBxxscVnnbDdGK4JO0FZ",uri="sip:[email protected]",response="29a3edef773fdde72fe0d462f827f35f"
        Content-Length: 890
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): wow-jitsi.org 0 0 IN IP4 192.168.2.13
            Session Name (s): -
            Connection Information (c): IN IP4 192.168.2.13
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 5000 RTP/AVP 96 97 98 9 100 102 0 8 103 3 104 101            
            
Frame 61 (Int->Ext Call - Kamailio to External UA) 
Session Initiation Protocol (INVITE)
    Request-Line: INVITE sip:[email protected]:62162;transport=tcp;registering_acc=pub-domain-name_net SIP/2.0
        Method: INVITE
        Request-URI: sip:[email protected]:62162;transport=tcp;registering_acc=pub-domain-name_net
        [Resent Packet: False]
    Message Header
        Record-Route: <sip:pub-domain-name.net;transport=tcp;lr=on;nat=yes>
        Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0
        [Generated Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0]
        CSeq: 2 INVITE
        From: "WOW" <sip:[email protected]>;tag=b1fd2e81
        To: <sip:[email protected]>
        Max-Forwards: 69
        Contact: "WOW" <sip:[email protected]:53616;transport=tcp;registering_acc=pub-domain-name_net;alias=192.168.2.13~53616~2>
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Type: application/sdp
        Via: SIP/2.0/TCP pub-domain-name.net:5060;branch=z9hG4bK21a9.589fa94c2a5f6bf663ed3ab3f2c76f52.0;i=1
            Transport: TCP
            Sent-by Address: pub-domain-name.net
            Sent-by port: 5060
            Branch: z9hG4bK21a9.589fa94c2a5f6bf663ed3ab3f2c76f52.0
            i=1
        Via: SIP/2.0/TCP 192.168.2.13:53616;rport=53616;branch=z9hG4bK-333030-96dd852a7c0145c94806d428bfd52f71
            Transport: TCP
            Sent-by Address: 192.168.2.13
            Sent-by port: 53616
            RPort: 53616
            Branch: z9hG4bK-333030-96dd852a7c0145c94806d428bfd52f71
        Content-Length: 936
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): wow-jitsi.org 0 0 IN IP4 73.150.xxx.xxx
            Session Name (s): -
            Connection Information (c): IN IP4 73.150.xxx.xxx
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 35000 RTP/AVP 96 97 98 9 100 102 0 8 103 3 104 101            

Frame 84 (External Callee to Kamailio Server: 200-OK)            
Session Initiation Protocol (200)
    Status-Line: SIP/2.0 200 OK
        Status-Code: 200
        [Resent Packet: False]
    Message Header
        CSeq: 2 INVITE
        Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0
        [Generated Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0]
        From: "WOW" <sip:[email protected]>;tag=b1fd2e81
        To: <sip:[email protected]>;tag=1186416
        Via: SIP/2.0/TCP pub-domain-name.net:5060;branch=z9hG4bK21a9.589fa94c2a5f6bf663ed3ab3f2c76f52.0;i=1;received=73.150.xxx.xxx;rport=5060,SIP/2.0/TCP 192.168.2.13:53616;rport=53616;branch=z9hG4bK-333030-96dd852a7c0145c94806d428bfd52f71
            Transport: TCP
            Sent-by Address: pub-domain-name.net
            Sent-by port: 5060
            Branch: z9hG4bK21a9.589fa94c2a5f6bf663ed3ab3f2c76f52.0
            i=1
            Received: 73.150.xxx.xxx
            RPort: 5060
            Transport: TCP
            Sent-by Address: 192.168.2.13
            Sent-by port: 53616
            RPort: 53616
            Branch: z9hG4bK-333030-96dd852a7c0145c94806d428bfd52f71
        Record-Route: <sip:pub-domain-name.net;transport=tcp;lr=on;nat=yes>
        Contact: "Think" <sip:[email protected]:62162;transport=tcp;registering_acc=pub-domain-name_net>
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Type: application/sdp
        Content-Length: 556
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): think-jitsi.org 0 0 IN IP4 192.168.6.129
            Session Name (s): -
            Connection Information (c): IN IP4 192.168.6.129
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 5000 RTP/AVP 103            

Frame 86 (Kamailio to Internal Caller UA: 200-OK)

Session Initiation Protocol (200)
    Status-Line: SIP/2.0 200 OK
        Status-Code: 200
        [Resent Packet: False]
    Message Header
        CSeq: 2 INVITE
        Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0
        [Generated Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0]
        From: "WOW" <sip:[email protected]>;tag=b1fd2e81
        To: <sip:[email protected]>;tag=1186416
        Via: SIP/2.0/TCP 192.168.2.13:53616;rport=53616;branch=z9hG4bK-333030-96dd852a7c0145c94806d428bfd52f71
            Transport: TCP
            Sent-by Address: 192.168.2.13
            Sent-by port: 53616
            RPort: 53616
            Branch: z9hG4bK-333030-96dd852a7c0145c94806d428bfd52f71
        Record-Route: <sip:pub-domain-name.net;transport=tcp;lr=on;nat=yes>
        Contact: "Think" <sip:[email protected]:62162;transport=tcp;registering_acc=pub-domain-name_net>
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Type: application/sdp
        Content-Length: 1223
    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): think-jitsi.org 0 0 IN IP4 73.150.xxx.xxx
            Session Name (s): -
            Connection Information (c): IN IP4 73.150.xxx.xxx
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 35022 RTP/AVP 103  
            Media Description, name and address (m): audio 35066 RTP/AVP 103
         

Frame 136 (Internal caller UA sending SIP-ACK for 200-OK to Kamailio Server)
Session Initiation Protocol (ACK)
    Request-Line: ACK sip:[email protected]:62162;transport=tcp;registering_acc=pub-domain-name_net SIP/2.0
        Method: ACK
        Request-URI: sip:[email protected]:62162;transport=tcp;registering_acc=pub-domain-name_net
        [Resent Packet: False]
    Message Header
        Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0
        [Generated Call-ID: 12e8162ae975b2a1b7cc2fed4101e962@0:0:0:0:0:0:0:0]
        CSeq: 2 ACK
        Via: SIP/2.0/TCP 192.168.2.13:53616;branch=z9hG4bK-333030-7fe73867b52851d45ac33961e1368312
            Transport: TCP
            Sent-by Address: 192.168.2.13
            Sent-by port: 53616
            Branch: z9hG4bK-333030-7fe73867b52851d45ac33961e1368312
        From: "WOW" <sip:[email protected]>;tag=b1fd2e81
        To: "Think" <sip:[email protected]>;tag=1186416
        Max-Forwards: 70
        Route: <sip:pub-domain-name.net;transport=tcp;lr=on;nat=yes>
        Contact: "WOW" <sip:[email protected]:53616;transport=tcp;registering_acc=pub-domain-name_net>
        User-Agent: Jitsi2.10.5550Windows 10
        Content-Length: 0

Kamailio Server sends a TCP ack back to internal UA caller but does not forward the SIP-response ACK to external UA callee -- NO RTP CONNECTION, CALL FAILS.
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