Hi,

I am working on getting my two SIP phones behind firewall to talk to each other.   One client is SPA 921 and the other client is xlite; and I am force rport for all SIP requests from clients.  When xlite sends a INVITE request to openser, openser tries to send to SPA 921, but the PORT is still 5060, instead of 22848.  Therefore, Openser keeps resending INVITE to SPA 921 but never reaches it.  Both linksys and xlite do send preiodic SUBSCRIBE/NOTIFY to Openser.  Is there anything else I am missing? 

U 48.133.23.45:21395 -> 48.133.200.20:5060
INVITE sip:1005@48.133.23.45 SIP/2.0.
Via: SIP/2.0/UDP 192.168.1.100:53722;branch=z9hG4bK-d87543-683f775fdd79a93d-1--d 87543-;rport.
Max-Forwards: 70.
Contact: <sip:2000@48.133.23.45:21395>.
To: "1005"<sip:1005@48.133.23.45>.
From: "2000"<sip:2000@48.133.23.45>;tag=12709c02.
Call-ID: MzRjM2RkZjQxNDk3ZjVjOTFhMzYyZmM0MThmODI3N2U..
CSeq: 1 INVITE.
Session-Expires: 95.
Min-SE: 90.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INF O.
Content-Type: application/sdp.
Supported: timer.
User-Agent: X-Lite release 1011s stamp 41150.
Content-Length: 371.
.
v=0.
o=- 9 2 IN IP4 192.168.1.100.
s=CounterPath X-Lite 3.0.
c=IN IP4 192.168.1.100.
t=0 0.
m=audio 5416 RTP/AVP 107 119 100 106 0 105 98 8 101.
a=fmtp:101 0-15.
a=rtpmap:107 BV32/16000.
a=rtpmap:119 BV32-FEC/16000.
a=rtpmap:100 SPEEX/16000.
a=rtpmap:106 SPEEX-FEC/16000.
a=rtpmap:105 SPEEX-FEC/8000.
a=rtpmap:98 iLBC/8000.
a=rtpmap:101 telephone-event/8000.
a=sendrecv.


U 48.133.200.20:5060 -> 48.133.23.45:21395
SIP/2.0 100 Giving a try.
Via: SIP/2.0/UDP 192.168.1.100:53722;branch=z9hG4bK-d87543-683f775fdd79a93d-1--d 87543-;rport=21395;received=48.133.23.45.
To: "1005"<sip:1005@48.133.23.45>.
From: "2000"<sip:2000@48.133.23.45>;tag=12709c02.
Call-ID: MzRjM2RkZjQxNDk3ZjVjOTFhMzYyZmM0MThmODI3N2U..
CSeq: 1 INVITE.
Server: OpenSER (1.3.2-notls (i386/linux)).
Content-Length: 0.
.


U 48.133.200.20:5060 -> 48.133.23.45:5060
INVITE sip:1005@48.133.23.45 SIP/2.0.
Record-Route: <sip:48.133.200.20;lr=on;ftag=12709c02>.
Via: SIP/2.0/UDP 48.133.200.20;branch=z9hG4bK0996.d020a552.0.
Via: SIP/2.0/UDP 192.168.1.100:53722;received=48.133.23.45;branch=z9hG4bK-d8754 3-683f775fdd79a93d-1--d87543-;rport=21395.
Max-Forwards: 69.
Contact: <sip:2000@48.133.23.45:21395>.
To: "1005"<sip:1005@48.133.23.45>.
From: "2000"<sip:2000@48.133.23.45>;tag=12709c02.
Call-ID: MzRjM2RkZjQxNDk3ZjVjOTFhMzYyZmM0MThmODI3N2U..
CSeq: 1 INVITE.
Session-Expires: 95.
Min-SE: 90.
Allow: INVITE,

U 48.133.23.45:5060 -> 48.133.200.20:5060
INVITE sip:1005@48.133.23.45 SIP/2.0.
Record-Route: <sip:48.133.200.20;lr=on;ftag=12709c02>.
Via: SIP/2.0/UDP 48.133.200.20;branch=z9hG4bK0996.d020a552.0.
Via: SIP/2.0/UDP 192.168.1.100:53722;received=48.133.23.45;branch=z9hG4bK-d8754 3-683f775fdd79a93d-1--d87543-;rport=21395.
Max-Forwards: 69.
Contact: <sip:2000@48.133.23.45:21395>.
To: "1005"<sip:1005@48.133.23.45>.
From: "2000"<sip:2000@48.133.23.45>;tag=12709c02.
Call-ID: MzRjM2RkZjQxNDk3ZjVjOTFhMzYyZmM0MThmODI3N2U..
CSeq: 1 INVITE.
Session-Expires: 95.
Min-SE: 90.
Allow: INVITE,

U 48.133.200.20:5060 -> 48.133.23.45:5060
INVITE sip:1005@48.133.23.45 SIP/2.0.
Record-Route: <sip:48.133.200.20;lr=on;ftag=12709c02>.
Via: SIP/2.0/UDP 48.133.200.20;branch=z9hG4bK0996.d020a552.0.
Via: SIP/2.0/UDP 192.168.1.100:53722;received=48.133.23.45;branch=z9hG4bK-d8754 3-683f775fdd79a93d-1--d87543-;rport=21395.
Max-Forwards: 69.
Contact: <sip:2000@48.133.23.45:21395>.
To: "1005"<sip:1005@48.133.23.45>.
From: "2000"<sip:2000@48.133.23.45>;tag=12709c02.
Call-ID: MzRjM2RkZjQxNDk3ZjVjOTFhMzYyZmM0MThmODI3N2U..
CSeq: 1 INVITE.
Session-Expires: 95.
Min-SE: 90.
Allow: INVITE,

U 48.133.23.45:5060 -> 48.133.200.20:5060
INVITE sip:1005@48.133.23.45 SIP/2.0.
Record-Route: <sip:48.133.200.20;lr=on;ftag=12709c02>.
Via: SIP/2.0/UDP 48.133.200.20;branch=z9hG4bK0996.d020a552.0.
Via: SIP/2.0/UDP 192.168.1.100:53722;received=48.133.23.45;branch=z9hG4bK-d8754 3-683f775fdd79a93d-1--d87543-;rport=21395.
Max-Forwards: 69.
Contact: <sip:2000@48.133.23.45:21395>.
To: "1005"<sip:1005@48.133.23.45>.
From: "2000"<sip:2000@48.133.23.45>;tag=12709c02.
Call-ID: MzRjM2RkZjQxNDk3ZjVjOTFhMzYyZmM0MThmODI3N2U..
CSeq: 1 INVITE.
Session-Expires: 95.
Min-SE: 90.
Allow: INVITE,

U 48.133.200.20:5060 -> 48.133.23.45:5060
INVITE sip:1005@48.133.23.45 SIP/2.0.
Record-Route: <sip:48.133.200.20;lr=on;ftag=12709c02>.
Via: SIP/2.0/UDP 48.133.200.20;branch=z9hG4bK0996.d020a552.0.
Via: SIP/2.0/UDP 192.168.1.100:53722;received=48.133.23.45;branch=z9hG4bK-d8754 3-683f775fdd79a93d-1--d87543-;rport=21395.
Max-Forwards: 69.
Contact: <sip:2000@48.133.23.45:21395>.
To: "1005"<sip:1005@48.133.23.45>.
From: "2000"<sip:2000@48.133.23.45>;tag=12709c02.
Call-ID: MzRjM2RkZjQxNDk3ZjVjOTFhMzYyZmM0MThmODI3N2U..
CSeq: 1 INVITE.
Session-Expires: 95.
Min-SE: 90.
Allow: INVITE,

U 48.133.23.45:5060 -> 48.133.200.20:5060
INVITE sip:1005@48.133.23.45 SIP/2.0.
Record-Route: <sip:48.133.200.20;lr=on;ftag=12709c02>.
Via: SIP/2.0/UDP 48.133.200.20;branch=z9hG4bK0996.d020a552.0.
Via: SIP/2.0/UDP 192.168.1.100:53722;received=48.133.23.45;branch=z9hG4bK-d8754 3-683f775fdd79a93d-1--d87543-;rport=21395.
Max-Forwards: 69.
Contact: <sip:2000@48.133.23.45:21395>.
To: "1005"<sip:1005@48.133.23.45>.
From: "2000"<sip:2000@48.133.23.45>;tag=12709c02.
Call-ID: MzRjM2RkZjQxNDk3ZjVjOTFhMzYyZmM0MThmODI3N2U..
CSeq: 1 INVITE.
Session-Expires: 95.
Min-SE: 90.
Allow: INVITE,

U 48.133.23.45:21395 -> 48.133.200.20:5060
SUBSCRIBE sip:2000@48.133.23.45 SIP/2.0.
Via: SIP/2.0/UDP 192.168.1.100:53722;branch=z9hG4bK-d87543-d900ee1c55767008-1--d 87543-;rport.
Max-Forwards: 70.
Contact: <sip:2000@48.133.23.45:21395>.
To: "2000"<sip:2000@48.133.23.45>.
From: "2000"<sip:2000@48.133.23.45>;tag=8b347a51.
Call-ID: MzY3NGIwNTJlMWY5Njg2MmM5YmI1NTIxNTRjZjljYzM..
CSeq: 1 SUBSCRIBE.
Expires: 300.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INF O.
Supported: timer.
User-Agent: X-Lite release 1011s stamp 41150.
Event: message-summary.
Content-Length: 0.
.

U 48.133.23.45:22840 -> 48.133.200.20:5060
NOTIFY sip:48.133.23.45 SIP/2.0.
Via: SIP/2.0/UDP 192.168.1.101:5060;branch=z9hG4bK-2c2e52f6;rport.
From: "1005" <sip:1005@48.133.23.45>;tag=a45646112863dco0.
To: <sip:48.133.23.45>.
Call-ID: ad4c4ce-bb2b86f4@192.168.1.101.
CSeq: 1017 NOTIFY.
Max-Forwards: 70.
Event: keep-alive.
User-Agent: Sipura/SPA921-4.1.10(b).
Content-Length: 0.
.


Any suggestion will be helpful.

JB