[Serusers] why would a client behave differently for nat onoutbound as opposed to inbound

Greger V. Teigre greger at teigre.com
Mon Apr 4 08:14:51 CEST 2005


Ok, this is what I see (assuming you *want* to proxy the call) :
- HT is not proxied. This means that your ser.cfg does not detect the 
private address in the SDP and the SDP payload is not rewritten in an 
incoming INVITE (use_media_proxy() was not called).  Have a look at the code 
detecting NAT for INVITEs.
- Xlite is proxied, so you correctly detect the NAT in the onreply_route.
g-)

Iqbal wrote:
> Hi
>
> Heres the trace
>
> NOTE : Internal IP are exactly how they are, external been search and
> replaced. Taken using ngrep
>
> ----------
> ###########
> U 2005/04/03 16:14:47.352103 223.78.240.109:1024 ->
> 201.218.150.25:5060 INVITE sip:040600 at sip.domain.com SIP/2.0.
> Via: SIP/2.0/UDP 192.168.20.3;branch=z9hG4bK6afda005df28ce2f.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>.
> Contact: <sip:040618 at 192.168.20.3>.
> Supported: replaces.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15178 INVITE.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 70.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Type: application/sdp.
> Content-Length: 340.
> .
> v=0.
> o=040618 8000 0 IN IP4 192.168.20.3.
> s=SIP Call.
> c=IN IP4 192.168.20.3.
> t=0 0.
> m=audio 5004 RTP/AVP 0 8 4 18 2 15 99.
> a=sendrecv.
> a=rtpmap:0 PCMU/8000/3.
> a=rtpmap:8 PCMA/8000/3.
> a=rtpmap:4 G723/8000/3.
> a=rtpmap:18 G729/8000/3.
> a=rtpmap:2 G726-32/8000/3.
> a=rtpmap:15 G728/8000/3.
> a=rtpmap:99 iLBC/8000/3.
> a=fmtp:99 mode=20.
> a=ptime:20.
>
> #
> U 2005/04/03 16:14:47.390154 201.218.150.25:5060 ->
> 223.78.240.109:1024 SIP/2.0 407 Proxy Authentication Required.
> Via: SIP/2.0/UDP
> 192.168.20.3;branch=z9hG4bK6afda005df28ce2f;rport=1024;received=223.78.240.109.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To:
> <sip:040600 at sip.domain.com>;tag=bde2d0f39a3c31098b0c0a337d26256c.5b34.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15178 INVITE.
> Proxy-Authenticate: Digest realm="sip.domain.com",
> nonce="42500993cb56f08d341fb7a29897c97250e955ed".
> Content-Length: 0.
> Warning: 392 201.218.150.25:5060 "Noisy feedback tells:  pid=2783
> req_src_ip=223.78.240.109 req_src_port=1024
> in_uri=sip:040600 at sip.domain.com
> out_uri=sip:040600 at 223.78.240.109:5060 via_cnt==1".
> .
>
> #
> U 2005/04/03 16:14:47.439305 223.78.240.109:1024 ->
> 201.218.150.25:5060 ACK sip:040600 at sip.domain.com SIP/2.0.
> Via: SIP/2.0/UDP 192.168.20.3;branch=z9hG4bK6afda005df28ce2f.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To:
> <sip:040600 at sip.domain.com>;tag=bde2d0f39a3c31098b0c0a337d26256c.5b34.
> Contact: <sip:040618 at 192.168.20.3>.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15178 ACK.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 70.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Length: 0.
> .
>
> #
> U 2005/04/03 16:14:47.479407 223.78.240.109:1024 ->
> 201.218.150.25:5060 INVITE sip:040600 at sip.domain.com SIP/2.0.
> Via: SIP/2.0/UDP 192.168.20.3;branch=z9hG4bK1884d89b14226d43.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>.
> Contact: <sip:040618 at 192.168.20.3>.
> Supported: replaces.
> Proxy-Authorization: DIGEST username="040618",
> realm="sip.domain.com", algorithm=MD5,
> uri="sip:040600 at sip.domain.com",
> nonce="42500993cb56f08d341fb7a29897c97250e955ed",
> response="d4573559ec2e355755de825d8afb4a1f".
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 INVITE.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 70.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Type: application/sdp.
> Content-Length: 340.
> .
> v=0.
> o=040618 8000 1 IN IP4 192.168.20.3.
> s=SIP Call.
> c=IN IP4 192.168.20.3.
> t=0 0.
> m=audio 5004 RTP/AVP 0 8 4 18 2 15 99.
> a=sendrecv.
> a=rtpmap:0 PCMU/8000/3.
> a=rtpmap:8 PCMA/8000/3.
> a=rtpmap:4 G723/8000/3.
> a=rtpmap:18 G729/8000/3.
> a=rtpmap:2 G726-32/8000/3.
> a=rtpmap:15 G728/8000/3.
> a=rtpmap:99 iLBC/8000/3.
> a=fmtp:99 mode=20.
> a=ptime:20.
>
> #
> U 2005/04/03 16:14:47.516822 201.218.150.25:5060 ->
> 223.78.240.109:1024 SIP/2.0 100 trying -- your call is important to
> us.
> Via: SIP/2.0/UDP
> 192.168.20.3;branch=z9hG4bK1884d89b14226d43;rport=1024;received=223.78.240.109.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 INVITE.
> Content-Length: 0.
> Warning: 392 201.218.150.25:5060 "Noisy feedback tells:  pid=2786
> req_src_ip=223.78.240.109 req_src_port=1024
> in_uri=sip:040600 at sip.domain.com
> out_uri=sip:040600 at 223.78.240.109:5060 via_cnt==1".
> .
>
> #
> U 2005/04/03 16:14:47.517367 201.218.150.25:5060 ->
> 223.78.240.109:5060 INVITE sip:040600 at 223.78.240.109:5060 SIP/2.0.
> Record-Route:
> <sip:040600 at 201.218.150.25:5060;nat=yes;ftag=a660434c00b83084;lr=on>.
> Via: SIP/2.0/UDP 201.218.150.25;branch=z9hG4bKe94c.0d901766.0.
> Via: SIP/2.0/UDP
> 192.168.20.3;rport=1024;received=223.78.240.109;branch=z9hG4bK1884d89b14226d43.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>.
> Contact: <sip:040618 at 223.78.240.109:1024>.
> Supported: replaces.
> Proxy-Authorization: DIGEST username="040618",
> realm="sip.domain.com", algorithm=MD5,
> uri="sip:040600 at sip.domain.com",
> nonce="42500993cb56f08d341fb7a29897c97250e955ed",
> response="d4573559ec2e355755de825d8afb4a1f".
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 INVITE.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 16.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Type: application/sdp.
> Content-Length: 340.
> .
> v=0.
> o=040618 8000 1 IN IP4 192.168.20.3.
> s=SIP Call.
> c=IN IP4 192.168.20.3.
> t=0 0.
> m=audio 5004 RTP/AVP 0 8 4 18 2 15 99.
> a=sendrecv.
> a=rtpmap:0 PCMU/8000/3.
> a=rtpmap:8 PCMA/8000/3.
> a=rtpmap:4 G723/8000/3.
> a=rtpmap:18 G729/8000/3.
> a=rtpmap:2 G726-32/8000/3.
> a=rtpmap:15 G728/8000/3.
> a=rtpmap:99 iLBC/8000/3.
> a=fmtp:99 mode=20.
> a=ptime:20.
>
> #
> U 2005/04/03 16:14:47.968715 201.218.150.25:5060 ->
> 223.78.240.109:5060 INVITE sip:040600 at 223.78.240.109:5060 SIP/2.0.
> Record-Route:
> <sip:040600 at 201.218.150.25:5060;nat=yes;ftag=a660434c00b83084;lr=on>.
> Via: SIP/2.0/UDP 201.218.150.25;branch=z9hG4bKe94c.0d901766.0.
> Via: SIP/2.0/UDP
> 192.168.20.3;rport=1024;received=223.78.240.109;branch=z9hG4bK1884d89b14226d43.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>.
> Contact: <sip:040618 at 223.78.240.109:1024>.
> Supported: replaces.
> Proxy-Authorization: DIGEST username="040618",
> realm="sip.domain.com", algorithm=MD5,
> uri="sip:040600 at sip.domain.com",
> nonce="42500993cb56f08d341fb7a29897c97250e955ed",
> response="d4573559ec2e355755de825d8afb4a1f".
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 INVITE.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 16.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Type: application/sdp.
> Content-Length: 340.
> .
> v=0.
> o=040618 8000 1 IN IP4 192.168.20.3.
> s=SIP Call.
> c=IN IP4 192.168.20.3.
> t=0 0.
> m=audio 5004 RTP/AVP 0 8 4 18 2 15 99.
> a=sendrecv.
> a=rtpmap:0 PCMU/8000/3.
> a=rtpmap:8 PCMA/8000/3.
> a=rtpmap:4 G723/8000/3.
> a=rtpmap:18 G729/8000/3.
> a=rtpmap:2 G726-32/8000/3.
> a=rtpmap:15 G728/8000/3.
> a=rtpmap:99 iLBC/8000/3.
> a=fmtp:99 mode=20.
> a=ptime:20.
>
> ####
> U 2005/04/03 16:14:49.718507 223.78.240.109:5060 ->
> 201.218.150.25:5060 SIP/2.0 100 Trying.
> Via: SIP/2.0/UDP 201.218.150.25;branch=z9hG4bKe94c.0d901766.0.
> Via: SIP/2.0/UDP
> 192.168.20.3;rport=1024;received=223.78.240.109;branch=z9hG4bK1884d89b14226d43.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Contact: <sip:040600 at 223.78.240.109:5060>.
> Record-Route:
> <sip:040600 at 201.218.150.25:5060;nat=yes;ftag=a660434c00b83084;lr=on>.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 INVITE.
> Server: X-Lite release 1103m.
> Content-Length: 0.
> .
>
> #
> U 2005/04/03 16:14:50.478983 223.78.240.109:5060 ->
> 201.218.150.25:5060 SIP/2.0 180 Ringing.
> Via: SIP/2.0/UDP 201.218.150.25;branch=z9hG4bKe94c.0d901766.0.
> Via: SIP/2.0/UDP
> 192.168.20.3;rport=1024;received=223.78.240.109;branch=z9hG4bK1884d89b14226d43.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Contact: <sip:040600 at 223.78.240.109:5060>.
> Record-Route:
> <sip:040600 at 201.218.150.25:5060;nat=yes;ftag=a660434c00b83084;lr=on>.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 INVITE.
> Server: X-Lite release 1103m.
> Content-Length: 0.
> .
>
> #
> U 2005/04/03 16:14:50.480364 201.218.150.25:5060 ->
> 223.78.240.109:1024 SIP/2.0 180 Ringing.
> Via: SIP/2.0/UDP
> 192.168.20.3;rport=1024;received=223.78.240.109;branch=z9hG4bK1884d89b14226d43.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Contact: <sip:040600 at 223.78.240.109:5060>.
> Record-Route:
> <sip:040600 at 201.218.150.25:5060;nat=yes;ftag=a660434c00b83084;lr=on>.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 INVITE.
> Server: X-Lite release 1103m.
> Content-Length: 0.
> .
>
> ############
> U 2005/04/03 16:14:54.716498 223.78.240.109:5060 ->
> 201.218.150.25:5060 SIP/2.0 200 Ok.
> Via: SIP/2.0/UDP 201.218.150.25;branch=z9hG4bKe94c.0d901766.0.
> Via: SIP/2.0/UDP
> 192.168.20.3;rport=1024;received=223.78.240.109;branch=z9hG4bK1884d89b14226d43.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Contact: <sip:040600 at 223.78.240.109:5060>.
> Record-Route:
> <sip:040600 at 201.218.150.25:5060;nat=yes;ftag=a660434c00b83084;lr=on>.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 INVITE.
> Content-Type: application/sdp.
> Server: X-Lite release 1103m.
> Content-Length: 200.
> .
> v=0.
> o=040600 152816778 152823799 IN IP4 223.78.240.109.
> s=X-Lite.
> c=IN IP4 223.78.240.109.
> t=0 0.
> m=audio 8000 RTP/AVP 3 101.
> a=rtpmap:3 gsm/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
>
> #
> U 2005/04/03 16:14:54.719442 201.218.150.25:5060 ->
> 223.78.240.109:1024 SIP/2.0 200 Ok.
> Via: SIP/2.0/UDP
> 192.168.20.3;rport=1024;received=223.78.240.109;branch=z9hG4bK1884d89b14226d43.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Contact: <sip:040600 at 223.78.240.109:5060>.
> Record-Route:
> <sip:040600 at 201.218.150.25:5060;nat=yes;ftag=a660434c00b83084;lr=on>.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 INVITE.
> Content-Type: application/sdp.
> Server: X-Lite release 1103m.
> Content-Length: 200.
> .
> v=0.
> o=040600 152816778 152823799 IN IP4 223.78.240.109.
> s=X-Lite.
> c=IN IP4 223.78.240.109.
> t=0 0.
> m=audio 8000 RTP/AVP 3 101.
> a=rtpmap:3 gsm/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
>
> #
> U 2005/04/03 16:14:54.801450 223.78.240.109:1024 ->
> 201.218.150.25:5060 ACK sip:040600 at 223.78.240.109:5060 SIP/2.0.
> Via: SIP/2.0/UDP 192.168.20.3;branch=z9hG4bK6044f43b5006eedc.
> Route:
> <sip:040600 at 201.218.150.25:5060;nat=yes;ftag=a660434c00b83084;lr=on>.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Contact: <sip:040618 at 192.168.20.3>.
> Proxy-Authorization: DIGEST username="040618",
> realm="sip.domain.com", algorithm=MD5,
> uri="sip:040600 at 223.78.240.109:5060",
> nonce="42500993cb56f08d341fb7a29897c97250e955ed",
> response="ca8ea99e9b8345bde6ccb263ffd5a038".
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 ACK.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 70.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Length: 0.
> .
>
> #
> U 2005/04/03 16:14:54.803421 201.218.150.25:5060 ->
> 223.78.240.109:5060 ACK sip:040600 at 223.78.240.109:5060 SIP/2.0.
> Record-Route: <sip:201.218.150.25;ftag=a660434c00b83084;lr=on>.
> Via: SIP/2.0/UDP 201.218.150.25;branch=0.
> Via: SIP/2.0/UDP
> 192.168.20.3;received=223.78.240.109;branch=z9hG4bK6044f43b5006eedc.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Contact: <sip:040618 at 192.168.20.3>.
> Proxy-Authorization: DIGEST username="040618",
> realm="sip.domain.com", algorithm=MD5,
> uri="sip:040600 at 223.78.240.109:5060",
> nonce="42500993cb56f08d341fb7a29897c97250e955ed",
> response="ca8ea99e9b8345bde6ccb263ffd5a038".
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15179 ACK.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 16.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Length: 0.
> .
>
> #########
> U 2005/04/03 16:15:00.913249 223.78.240.109:1024 ->
> 201.218.150.25:5060 BYE sip:040600 at 223.78.240.109:5060 SIP/2.0.
> Via: SIP/2.0/UDP 192.168.20.3;branch=z9hG4bK1527872e4e616368.
> Route:
> <sip:040600 at 201.218.150.25:5060;nat=yes;ftag=a660434c00b83084;lr=on>.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Proxy-Authorization: DIGEST username="040618",
> realm="sip.domain.com", algorithm=MD5,
> uri="sip:040600 at 223.78.240.109:5060",
> nonce="42500993cb56f08d341fb7a29897c97250e955ed",
> response="5fd8e1f30a2924a53e44f8e9ad0abf47".
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15180 BYE.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 70.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Length: 0.
> .
>
> #
> U 2005/04/03 16:15:00.948553 201.218.150.25:5060 ->
> 223.78.240.109:5060 BYE sip:040600 at 223.78.240.109:5060 SIP/2.0.
> Record-Route: <sip:201.218.150.25;ftag=a660434c00b83084;lr=on>.
> Via: SIP/2.0/UDP 201.218.150.25;branch=z9hG4bK4a4c.3281602.0.
> Via: SIP/2.0/UDP
> 192.168.20.3;received=223.78.240.109;branch=z9hG4bK1527872e4e616368.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Proxy-Authorization: DIGEST username="040618",
> realm="sip.domain.com", algorithm=MD5,
> uri="sip:040600 at 223.78.240.109:5060",
> nonce="42500993cb56f08d341fb7a29897c97250e955ed",
> response="5fd8e1f30a2924a53e44f8e9ad0abf47".
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15180 BYE.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 16.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Length: 0.
> .
>
> #
> U 2005/04/03 16:15:00.993724 201.218.150.25:5060 ->
> 223.78.240.109:5060 BYE sip:040600 at 223.78.240.109:5060 SIP/2.0.
> Record-Route: <sip:201.218.150.25;ftag=a660434c00b83084;lr=on>.
> Via: SIP/2.0/UDP 201.218.150.25;branch=z9hG4bK4a4c.3281602.0.
> Via: SIP/2.0/UDP
> 192.168.20.3;received=223.78.240.109;branch=z9hG4bK1527872e4e616368.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Proxy-Authorization: DIGEST username="040618",
> realm="sip.domain.com", algorithm=MD5,
> uri="sip:040600 at 223.78.240.109:5060",
> nonce="42500993cb56f08d341fb7a29897c97250e955ed",
> response="5fd8e1f30a2924a53e44f8e9ad0abf47".
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15180 BYE.
> User-Agent: Grandstream HT487 1.0.5.18.
> Max-Forwards: 16.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
> Content-Length: 0.
> .
>
> #
> U 2005/04/03 16:15:01.086530 223.78.240.109:5060 ->
> 201.218.150.25:5060 SIP/2.0 200 Ok.
> Via: SIP/2.0/UDP 201.218.150.25;branch=z9hG4bK4a4c.3281602.0.
> Via: SIP/2.0/UDP
> 192.168.20.3;received=223.78.240.109;branch=z9hG4bK1527872e4e616368.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Contact: <sip:040600 at 223.78.240.109:5060>.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15180 BYE.
> Server: X-Lite release 1103m.
> Content-Length: 0.
> .
>
> #
> U 2005/04/03 16:15:01.087731 201.218.150.25:5060 ->
> 223.78.240.109:5060 SIP/2.0 200 Ok.
> Via: SIP/2.0/UDP
> 192.168.20.3;received=223.78.240.109;branch=z9hG4bK1527872e4e616368.
> From: "Iqbal" <sip:040618 at sip.domain.com>;tag=a660434c00b83084.
> To: <sip:040600 at sip.domain.com>;tag=1718523.
> Contact: <sip:040600 at 223.78.240.109:5060>.
> Call-ID: fdef3f406ba21473 at 192.168.20.3.
> CSeq: 15180 BYE.
> Server: X-Lite release 1103m.
> Content-Length: 0.
> .
>
> ###############
>
> ---------------------
>
>
> On 4/3/2005, "Greger V. Teigre" <greger at teigre.com> wrote:
>
>> Iqbal,
>> post a trace of the INVITE and OK going from HT to xlite (taken on
>> the SER server).
>> g-)
>>
>> Iqbal wrote:
>>> Couldnt think of a better subject, basically I have a handytone
>>> (HT) , and a xlite behind the same router, which is natting. SER is
>>> external
>>>
>>> Now when I call HT to xlite I hear absolutely nothing in either
>>> direction, and nuthing except for a request from xlite hits the
>>> mediaproxy...but when xlite calls HT, mediaproxy lights up like a
>>> xmas tree, and all is well.
>>>
>>> What I can see is that if the router is the same one, then surely
>>> something in the HT settings (I have no NAT traversal set in HT)
>>> causing this, or something in xlite telling it what to do, I just
>>> cant see what.
>>>
>>> Oh xlite/HT to pstn works fine, and inbound from pstn to HT/xlite is
>>> also fine voice both ways.
>>>
>>> Iqbal
>>>
>>> _______________________________________________
>>> Serusers mailing list
>>> serusers at lists.iptel.org
>>> http://lists.iptel.org/mailman/listinfo/serusers 




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