Hi Bogdan,
Bogdan-Andrei Iancu wrote:
as the trace shows, the phone does via SIP a kind of auto-detection of
the external IP based on received and rport via params.... can you
disable this feature?
You are right.
No, I cannot disable it. There is no such option :-(((
I send you the trace of INVITE transaction as seen from LAN behind NAT.
It shows that also SDP is rewritten.
--
Regards,
Arek Bekiersz
---------------------------------------------------------------------------
Packet 1
Source IP Address:192.168.1.200
Destination IP Address:proxy_public_ip
INVITE sip:[EMAIL PROTECTED] SIP/2.0.
Via: SIP/2.0/udp
nat_public_ip:61001;branch=z9hG4bK483828829A0FFE1CBE2D351EC40C9.
From: <sip:[EMAIL PROTECTED]>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2.
To: <sip:[EMAIL PROTECTED]>.
Call-ID: [EMAIL PROTECTED]
CSeq: 5 INVITE.
Contact: <sip:[EMAIL PROTECTED]:61001;uniq=0FC6DA2B97704905AA040333C2B03>.
Max-Forwards: 70.
Expires: 120.
User-Agent: trouble-user-agent
.
Supported: 100rel, replaces.
Allow-Events: telephone-event, refer.
Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, UPDATE, PRACK, INF
O, SUBSCRIBE, NOTIFY, REFER, MESSAGE.
Content-Type: application/sdp.
Accept: application/sdp, multipart/mixed.
Accept-Encoding: identity.
Content-Length: 277.
.
v=0.
o=user 6744156 6744156 IN IP4 nat_public_ip.
s=call.
c=IN IP4 nat_public_ip.
t=1140702179 1140705779.
m=audio 7078 RTP/AVP 2 102 18 8 101.
a=sendrecv.
a=rtpmap:2 G726-32/8000.
a=rtpmap:102 G726-32/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-11.
a=rtcp:7079.
---------------------------------------------------------------------------
Packet 2
Source IP Address:proxy_public_ip
Destination IP Address:192.168.1.200
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/udp
nat_public_ip:61001;branch=z9hG4bK483828829A0FFE1CBE2D351EC40C9.
From: <sip:[EMAIL PROTECTED]>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2.
To: <sip:[EMAIL PROTECTED]>;tag=935ab969d5b642f019e17a3a52b4e4b2.341c.
Call-ID: [EMAIL PROTECTED]
CSeq: 5 INVITE.
Proxy-Authenticate: Digest realm=".....
Server: Sip EXpress router.
Content-Length: 0.
.
---------------------------------------------------------------------------
Packet 3
Source IP Address:192.168.1.200
Destination IP Address:proxy_public_ip
ACK sip:[EMAIL PROTECTED] SIP/2.0.
Via: SIP/2.0/udp
nat_public_ip:61001;branch=z9hG4bK483828829A0FFE1CBE2D351EC40C9.
From: <sip:[EMAIL PROTECTED]>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2.
To: <sip:[EMAIL PROTECTED]>;tag=935ab969d5b642f019e17a3a52b4e4b2.341c.
Call-ID: [EMAIL PROTECTED]
CSeq: 5 ACK.
User-Agent: trouble-user-agent
.
Content-Length: 0.
.
---------------------------------------------------------------------------
Packet 4
Source IP Address:192.168.1.200
Destination IP Address:proxy_public_ip
INVITE sip:[EMAIL PROTECTED] SIP/2.0.
Via: SIP/2.0/udp
nat_public_ip:61001;branch=z9hG4bK0DA7F19CA20D7B6DA35154CA9467C.
From: <sip:[EMAIL PROTECTED]>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2.
To: <sip:[EMAIL PROTECTED]>.
Call-ID: [EMAIL PROTECTED]
CSeq: 6 INVITE.
Contact: <sip:[EMAIL PROTECTED]:61001;uniq=0FC6DA2B977049
05AA040333C2B03>.
Proxy-Authorization: Digest username="5678", realm=".....
Max-Forwards: 70.
Expires: 120.
User-Agent: trouble-user-agent
.
Supported: 100rel, replaces.
Allow-Events: telephone-event, refer.
Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, UPDATE, PRACK, INF
O, SUBSCRIBE, NOTIFY, REFER, MESSAGE.
Content-Type: application/sdp.
Accept: application/sdp, multipart/mixed.
Accept-Encoding: identity.
Content-Length: 277.
.
v=0.
o=user 6744156 6744156 IN IP4 nat_public_ip.
s=call.
c=IN IP4 nat_public_ip.
t=1140702179 1140705779.
m=audio 7078 RTP/AVP 2 102 18 8 101.
a=sendrecv.
a=rtpmap:2 G726-32/8000.
a=rtpmap:102 G726-32/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-11.
a=rtcp:7079.
---------------------------------------------------------------------------
Packet 5
Source IP Address:proxy_public_ip
Destination IP Address:192.168.1.200
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/udp
nat_public_ip:61001;branch=z9hG4bK0DA7F19CA20D7B6DA35154CA9467C.
From: <sip:[EMAIL PROTECTED]>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2.
To: <sip:[EMAIL PROTECTED]>.
Call-ID: [EMAIL PROTECTED]
CSeq: 6 INVITE.
Server: Sip EXpress router.
Content-Length: 0.
.
---------------------------------------------------------------------------
Packet 6
Source IP Address:proxy_public_ip
Destination IP Address:192.168.1.200
SIP/2.0 180 Ringing.
Via: SIP/2.0/udp
nat_public_ip:61001;branch=z9hG4bK0DA7F19CA20D7B6DA35154CA9467C.
From: <sip:[EMAIL PROTECTED]>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2.
To: <sip:[EMAIL PROTECTED]>;tag=as490a0c26.
Call-ID: [EMAIL PROTECTED]
CSeq: 6 INVITE.
User-Agent: good-ua
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER.
Contact: <sip:[EMAIL PROTECTED]>.
Content-Length: 0.
.
---------------------------------------------------------------------------
Packet 8
Source IP Address:proxy_public_ip
Destination IP Address:192.168.1.200
SIP/2.0 200 OK.
Via: SIP/2.0/udp
nat_public_ip:61001;branch=z9hG4bK0DA7F19CA20D7B6DA35154CA9467C.
Record-Route: <sip:[EMAIL PROTECTED];ftag=A37DA72FCC637B1D7AEB5AEAFEBC2;lr=on>.
From: <sip:[EMAIL PROTECTED]>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2.
To: <sip:[EMAIL PROTECTED]>;tag=as490a0c26.
Call-ID: [EMAIL PROTECTED]
CSeq: 6 INVITE.
User-Agent: good-ua
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER.
Contact: <sip:[EMAIL PROTECTED]>.
Content-Type: application/sdp.
Content-Length: 297.
.
v=0.
o=root 10049 10049 IN IP4 good-ua-ip.
s=session.
c=IN IP4 good-ua-ip.
t=0 0.
m=audio 10276 RTP/AVP 2 5 8 0 101.
a=rtpmap:2 G726-32/8000.
a=rtpmap:5 DVI4/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
---------------------------------------------------------------------------
Packet 9
Source IP Address:192.168.1.200
Destination IP Address:proxy_public_ip
ACK sip:[EMAIL PROTECTED] SIP/2.0.
Via: SIP/2.0/UDP
nat_public_ip:61001;branch=z9hG4bK4E416AB44C125E935C1A974F2EA86.
Route: <sip:[EMAIL PROTECTED];ftag=A37DA72FCC637B1D7AEB5AEAFEBC2;lr=on>.
From: <sip:[EMAIL PROTECTED]>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2.
To: <sip:[EMAIL PROTECTED]>;tag=as490a0c26.
Call-ID: [EMAIL PROTECTED]
CSeq: 6 ACK.
Contact: <sip:[EMAIL PROTECTED]:61001;uniq=0FC6DA2B97704905AA040333C2B03>.
Max-Forwards: 70.
User-Agent: trouble-user-agent
.
Content-Length: 0.
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