[Users] polycom on hold, IN IP4 0.0.0.0 and force_rtp_proxy()

Tue Oct 17 17:42:36 CEST 2006

On Tue, 17 Oct 2006 10:36:20 -0400
Nathan Hawkins <utsl at quic.net> wrote:

> Comments inline.
> My gut feeling
> is you've found a firmware bug, or it's not interacting right with
> the other phone. I'd try calling between two Polycom's and see if
> that works as expected.
> 
> Good luck!

no, it doesn't make a difference, i just tried it with a polycom 601
and 501 involved. While i guess your assumption that this is incorrect
behaviour of the polycom is true i'm not sure if this is the main
reason for the one-way audio issue i initially posted. 
The sdp-part in the invite message on resuming the call on hold looks
like it would have to correct information to go through the nat, the
"c=a.b.c.d"-line is updated with the proxy ip and all other
nat-parameters are appended too. Could this be a problem of rtpproxy or
asterisk? The rtp-ports change a lot, seems some device sends the audio
to a port that has not been recognized by the firewall. Hope someone
has some additional input, i'll try to contact polycom but with their
strict reseller policy i guess i'll not get an answer...

best regards
christian

> > To clarify what i'm talking about i've attached the whole sip-debug
> > of two calls, the first call is sent on hold when a second call
> > comes and resumed after the second call has ended(1111111801 calls
> > 2222222804 and it answers, then 0891234567 calls 2222222804 and
> > 1111111801 is set on hold and resumed later). Openser runs on .98,
> > which also serves the rtpproxy. .97 is a asterisk-gateway.
> >
> > Thanks for the input
> > Christian
> >
> >
> >
> >
> >   
> >> What firmware version are you running?
> >>
> >> Nathan
> >>
> >> Benko wrote:
> >>     
> >>> Hmm, actually this parameter is set to 0(default).
> >>> However, in practice it still uses the old standard(rfc2543).
> >>> There's no media direction parameter in the sdp-message sent by
> >>> the polycom for some reason, although the manual states to do so
> >>> (firmware 2.0.1). Is it possible to force this somehow?
> >>>
> >>> regards
> >>> christian
> >>>
> >>> On Sun, 15 Oct 2006 19:58:33 -0400
> >>> Nathan Hawkins <utsl at quic.net> wrote:
> >>>
> >>>       
> >>>> There's an option for the Polycom phones to switch the hold
> >>>> behaviour.
> >>>>
> >>>> Set voIpProt.SIP.useRFC2543hold to 0, and it should use RFC3264
> >>>> rules for signalling hold instead of 0.0.0.0.
> >>>>
> >>>> Benko wrote:
> >>>>         
> >>>>> Hello!
> >>>>>
> >>>>> I'm having a issue with NAT and rtpproxy. Usually my setup works
> >>>>> fine with natted clients, the Connection Information is
> >>>>> overwritten with the IP of the rtpproxy and audio passes through
> >>>>> in both directions. However, today i came across a problem where
> >>>>> the Polycom 501 sets a outgoing ip of 0.0.0.0 instead of the
> >>>>> private ip after resuming a call that was on hold(actually, the
> >>>>> other party is invited again) - and the force_rtp_proxy
> >>>>> ()-command on openser left the ip untouched instead of
> >>>>> overwriting it with the rtpproxy-ip. As a result the person that
> >>>>> was on hold had audio but the polycom user (with the "wrong" ip)
> >>>>> hadn't. 
> >>>>>
> >>>>> The false ip left aside, is it expected behaviour of
> >>>>> force_rtp_proxy to not touch 0.0.0.0?
> >>>>>
> >>>>> Just out of curiosity - does someone know the "on hold"-problem
> >>>>> with polycoms?
> >>>>>
> >>>>> thx
> >>>>> christian
> >>>>>
> >>>>> _______________________________________________
> >>>>> Users mailing list
> >>>>> Users at openser.org
> >>>>> http://openser.org/cgi-bin/mailman/listinfo/users
> >>>>>           
> >> ------------------------------------------------------------------------
> >>
> >> interface: bond0 (2XX.XXX.XXX.96/255.255.255.240)
> >> filter: ip and ( port 5060 and host 81.XXX.XXX.196 )
> >> #
> >> U 81.XXX.XXX.196:2051 -> 2XX.XXX.XXX.98:5060
> >> INVITE sip:0892222222804 at sip.de.mydomain.org;user=phone SIP/2.0.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.169:2051;branch=z9hG4bK-mdyquvng2u65;rport. From: "801"
> >> <sip:11111111801 at sip.de.mydomain.org>;tag=lxlk4gyz7h. To:
> >> <sip:0892222222804 at sip.de.mydomain.org;user=phone>. Call-ID:
> >> 3c27c91d975e-nqjv7jntspdo at snom190. CSeq: 1 INVITE.
> >> Max-Forwards: 70.
> >> Contact: <sip:11111111801 at 10.1.99.169:2051;line=9t7zelja>.
> >> P-Key-Flags: keys="3".
> >> User-Agent: snom190/3.60w.
> >> Accept: application/sdp.
> >> Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY,
> >> SUBSCRIBE, PRACK, MESSAGE, INFO. Allow-Events: talk, hold, refer.
> >> Supported: timer, 100rel, replaces.
> >> Session-Expires: 3600.
> >> Content-Type: application/sdp.
> >> Content-Length: 268.
> >> .
> >> v=0.
> >> o=root 1814496751 1814496751 IN IP4 10.1.99.169.
> >> s=call.
> >> c=IN IP4 10.1.99.169.
> >> t=0 0.
> >> m=audio 55428 RTP/AVP 8 0 18 101.
> >> a=rtpmap:8 pcma/8000.
> >> a=rtpmap:0 pcmu/8000.
> >> a=rtpmap:18 g729/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >> a=fmtp:101 0-15.
> >> a=ptime:20.
> >> a=sendrecv.
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:2051
> >> SIP/2.0 407 Proxy Authentication Required.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.169:2051;branch=z9hG4bK-mdyquvng2u65;rport=2051;received=81.XXX.XXX.196.
> >> From: "801" <sip:11111111801 at sip.de.mydomain.org>;tag=lxlk4gyz7h.
> >> To:
> >> <sip:0892222222804 at sip.de.mydomain.org;user=phone>;tag=2f7d8fa65b1e4a32386804888f034ca8.5f9f.
> >> Call-ID: 3c27c91d975e-nqjv7jntspdo at snom190. CSeq: 1 INVITE.
> >> Proxy-Authenticate: Digest realm="sip.de.mydomain.org",
> >> nonce="4534dc22e41f8b3a51321f458eed7830772d2ea7". Server: OpenSer
> >> (1.1.0-tls (i386/linux)). Content-Length: 0. Warning: 392
> >> 2XX.XXX.XXX.98:5060 "Noisy feedback tells:  pid=20907
> >> req_src_ip=81.XXX.XXX.196 req_src_port=2051
> >> in_uri=sip:0892222222804 at sip.de.mydomain.org;user=phone
> >> out_uri=sip:0892222222804 at sip.de.mydomain.org;user=phone
> >> via_cnt==1". .
> >>
> >> #
> >> U 81.XXX.XXX.196:2051 -> 2XX.XXX.XXX.98:5060
> >> ACK sip:0892222222804 at sip.de.mydomain.org;user=phone SIP/2.0.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.169:2051;branch=z9hG4bK-mdyquvng2u65;rport. From: "801"
> >> <sip:11111111801 at sip.de.mydomain.org>;tag=lxlk4gyz7h. To:
> >> <sip:0892222222804 at sip.de.mydomain.org;user=phone>;tag=2f7d8fa65b1e4a32386804888f034ca8.5f9f.
> >> Call-ID: 3c27c91d975e-nqjv7jntspdo at snom190. CSeq: 1 ACK.
> >> Max-Forwards: 70.
> >> Contact: <sip:11111111801 at 10.1.99.169:2051;line=9t7zelja>.
> >> Content-Length: 0.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:2051 -> 2XX.XXX.XXX.98:5060
> >> INVITE sip:0892222222804 at sip.de.mydomain.org;user=phone SIP/2.0.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.169:2051;branch=z9hG4bK-x9wr16oqr17g;rport. From: "801"
> >> <sip:11111111801 at sip.de.mydomain.org>;tag=lxlk4gyz7h. To:
> >> <sip:0892222222804 at sip.de.mydomain.org;user=phone>. Call-ID:
> >> 3c27c91d975e-nqjv7jntspdo at snom190. CSeq: 2 INVITE.
> >> Max-Forwards: 70.
> >> Contact: <sip:11111111801 at 10.1.99.169:2051;line=9t7zelja>.
> >> P-Key-Flags: keys="3".
> >> User-Agent: snom190/3.60w.
> >> Accept: application/sdp.
> >> Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY,
> >> SUBSCRIBE, PRACK, MESSAGE, INFO. Allow-Events: talk, hold, refer.
> >> Supported: timer, 100rel, replaces.
> >> Session-Expires: 3600.
> >> Proxy-Authorization: Digest
> >> username="11111111801",realm="sip.de.mydomain.org",nonce="4534dc22e41f8b3a51321f458eed7830772d2ea7",uri="sip:0892222222804 at sip.de.mydomain.org;user=phone",response="139c40e2fecbadf4412628412607a7d7",algorithm=md5.
> >> Content-Type: application/sdp. Content-Length: 268.
> >> .
> >> v=0.
> >> o=root 1814496751 1814496751 IN IP4 10.1.99.169.
> >> s=call.
> >> c=IN IP4 10.1.99.169.
> >> t=0 0.
> >> m=audio 55428 RTP/AVP 8 0 18 101.
> >> a=rtpmap:8 pcma/8000.
> >> a=rtpmap:0 pcmu/8000.
> >> a=rtpmap:18 g729/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >> a=fmtp:101 0-15.
> >> a=ptime:20.
> >> a=sendrecv.
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:2051
> >> SIP/2.0 100 trying -- your call is important to us.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.169:2051;branch=z9hG4bK-x9wr16oqr17g;rport=2051;received=81.XXX.XXX.196.
> >> From: "801" <sip:11111111801 at sip.de.mydomain.org>;tag=lxlk4gyz7h.
> >> To: <sip:0892222222804 at sip.de.mydomain.org;user=phone>. Call-ID:
> >> 3c27c91d975e-nqjv7jntspdo at snom190. CSeq: 2 INVITE.
> >> Server: OpenSer (1.1.0-tls (i386/linux)).
> >> Content-Length: 0.
> >> Warning: 392 2XX.XXX.XXX.98:5060 "Noisy feedback tells:  pid=20909
> >> req_src_ip=81.XXX.XXX.196 req_src_port=2051
> >> in_uri=sip:0892222222804 at sip.de.mydomain.org;user=phone
> >> out_uri=sip:0892222222804 at mgw.de.mydomain.org;user=phone
> >> via_cnt==1". .
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:2051
> >> SIP/2.0 200 OK.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.169:2051;received=81.XXX.XXX.196;branch=z9hG4bK-x9wr16oqr17g;rport=2051.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=lxlk4gyz7h>. From:
> >> "801" <sip:11111111801 at sip.de.mydomain.org>;tag=lxlk4gyz7h. To:
> >> <sip:0892222222804 at sip.de.mydomain.org;user=phone>;tag=as0fd69c4e.
> >> Call-ID: 3c27c91d975e-nqjv7jntspdo at snom190. CSeq: 2 INVITE.
> >> User-Agent: MyMediaGW.
> >> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
> >> Contact: <sip:0892222222804 at 2XX.XXX.XXX.97>.
> >> Content-Type: application/sdp.
> >> Content-Length: 303.
> >> .
> >> v=0.
> >> o=root 6068 6068 IN IP4 2XX.XXX.XXX.97.
> >> s=session.
> >> c=IN IP4 2XX.XXX.XXX.98.
> >> t=0 0.
> >> m=audio 36578 RTP/AVP 0 18 8 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:18 G729/8000.
> >> a=fmtp:18 annexb=no.
> >> a=rtpmap:8 PCMA/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >> a=fmtp:101 0-16.
> >> a=silenceSupp:off - - - -.
> >> a=nortpproxy:yes.
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> INVITE sip:2222222804 at 10.1.99.161:5060 SIP/2.0.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bK72b6.93580965.0.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK0062c4dd;rport=5060. From:
> >> "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a. To:
> >> <sip:2222222804 at sip.de.mydomain.org>. Contact:
> >> <sip:0891111111 at 2XX.XXX.XXX.97:5060>. Call-ID:
> >> 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org. CSeq: 102
> >> INVITE. User-Agent: MyMediaGW.
> >> Max-Forwards: 69.
> >> Date: Tue, 17 Oct 2006 13:30:30 GMT.
> >> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
> >> Content-Type: application/sdp.
> >> Content-Length: 396.
> >> .
> >> v=0.
> >> o=root 6068 6068 IN IP4 2XX.XXX.XXX.97.
> >> s=session.
> >> c=IN IP4 2XX.XXX.XXX.98.
> >> t=0 0.
> >> m=audio 36580 RTP/AVP 0 18 4 3 97 8 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:18 G729/8000.
> >> a=fmtp:18 annexb=no.
> >> a=rtpmap:4 G723/8000.
> >> a=rtpmap:3 GSM/8000.
> >> a=rtpmap:97 iLBC/8000.
> >> a=rtpmap:8 PCMA/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >> a=fmtp:101 0-16.
> >> a=silenceSupp:off - - - -.
> >> a=direction:active.
> >> a=nortpproxy:yes.
> >>
> >> #
> >> U 81.XXX.XXX.196:2051 -> 2XX.XXX.XXX.98:5060
> >> ACK sip:0892222222804 at 2XX.XXX.XXX.97 SIP/2.0.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.169:2051;branch=z9hG4bK-kqgbv28tcm8k;rport. Route:
> >> <sip:2XX.XXX.XXX.98;lr=on;ftag=lxlk4gyz7h>. From: "801"
> >> <sip:11111111801 at sip.de.mydomain.org>;tag=lxlk4gyz7h. To:
> >> <sip:0892222222804 at sip.de.mydomain.org;user=phone>;tag=as0fd69c4e.
> >> Call-ID: 3c27c91d975e-nqjv7jntspdo at snom190. CSeq: 2 ACK.
> >> Max-Forwards: 70.
> >> Contact: <sip:11111111801 at 10.1.99.169:2051;line=9t7zelja>.
> >> Content-Length: 0.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> SIP/2.0 100 Trying.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bK72b6.93580965.0.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK0062c4dd;rport=5060. From:
> >> "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a. To:
> >> <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A. CSeq:
> >> 102 INVITE. Call-ID:
> >> 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org. Contact:
> >> <sip:2222222804 at 10.1.99.161:5060>. Record-Route:
> >> <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Content-Length: 0.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> SIP/2.0 200 OK.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bK72b6.93580965.0.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK0062c4dd;rport=5060. From:
> >> "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a. To:
> >> <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A. CSeq:
> >> 102 INVITE. Call-ID:
> >> 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org. Contact:
> >> <sip:2222222804 at 10.1.99.161:5060>. Record-Route:
> >> <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>. Allow: INVITE, ACK,
> >> BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK,
> >> UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Content-Type:
> >> application/sdp. Content-Length: 185. .
> >> v=0.
> >> o=- 1161091665 1161091665 IN IP4 10.1.99.161.
> >> s=Polycom IP Phone.
> >> c=IN IP4 10.1.99.161.
> >> t=0 0.
> >> m=audio 2266 RTP/AVP 0 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> ACK sip:2222222804 at 81.XXX.XXX.196:5060 SIP/2.0.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bK72b6.93580965.2.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK77d83684;rport=5060. From:
> >> "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a. To:
> >> <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> Contact: <sip:0891111111 at 2XX.XXX.XXX.97>. Call-ID:
> >> 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org. CSeq: 102
> >> ACK. User-Agent: MyMediaGW.
> >> Max-Forwards: 69.
> >> Content-Length: 0.
> >> .
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> INVITE sip:2222222804 at 10.1.99.161:5060 SIP/2.0.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as2ff3bab6>.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bK7e63.43f60273.0.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK0378aca9;rport=5060. From:
> >> "0891234567" <sip:0891234567 at sip.de.mydomain.org>;tag=as2ff3bab6.
> >> To: <sip:2222222804 at sip.de.mydomain.org>. Contact:
> >> <sip:0891234567 at 2XX.XXX.XXX.97:5060>. Call-ID:
> >> 3a690e9411ee7c8d4523e07315bc2864 at sip.de.mydomain.org. CSeq: 102
> >> INVITE. User-Agent: MyMediaGW.
> >> Max-Forwards: 69.
> >> Date: Tue, 17 Oct 2006 13:30:38 GMT.
> >> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
> >> Content-Type: application/sdp.
> >> Content-Length: 396.
> >> .
> >> v=0.
> >> o=root 6068 6068 IN IP4 2XX.XXX.XXX.97.
> >> s=session.
> >> c=IN IP4 2XX.XXX.XXX.98.
> >> t=0 0.
> >> m=audio 36584 RTP/AVP 0 18 4 3 97 8 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:18 G729/8000.
> >> a=fmtp:18 annexb=no.
> >> a=rtpmap:4 G723/8000.
> >> a=rtpmap:3 GSM/8000.
> >> a=rtpmap:97 iLBC/8000.
> >> a=rtpmap:8 PCMA/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >> a=fmtp:101 0-16.
> >> a=silenceSupp:off - - - -.
> >> a=direction:active.
> >> a=nortpproxy:yes.
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> SIP/2.0 100 Trying.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bK7e63.43f60273.0.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK0378aca9;rport=5060. From:
> >> "0891234567" <sip:0891234567 at sip.de.mydomain.org>;tag=as2ff3bab6.
> >> To: <sip:2222222804 at sip.de.mydomain.org>;tag=4245106-795C21FB.
> >> CSeq: 102 INVITE. Call-ID:
> >> 3a690e9411ee7c8d4523e07315bc2864 at sip.de.mydomain.org. Contact:
> >> <sip:2222222804 at 10.1.99.161:5060>. Record-Route:
> >> <sip:2XX.XXX.XXX.98;lr=on;ftag=as2ff3bab6>. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Content-Length: 0.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> SIP/2.0 180 Ringing.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bK7e63.43f60273.0.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK0378aca9;rport=5060. From:
> >> "0891234567" <sip:0891234567 at sip.de.mydomain.org>;tag=as2ff3bab6.
> >> To: <sip:2222222804 at sip.de.mydomain.org>;tag=4245106-795C21FB.
> >> CSeq: 102 INVITE. Call-ID:
> >> 3a690e9411ee7c8d4523e07315bc2864 at sip.de.mydomain.org. Contact:
> >> <sip:2222222804 at 10.1.99.161:5060>. Record-Route:
> >> <sip:2XX.XXX.XXX.98;lr=on;ftag=as2ff3bab6>. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Allow-Events:
> >> talk,hold,conference. Content-Length: 0.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> INVITE sip:0891111111 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bKaf85a48130E1CF6C.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> CSeq: 1 INVITE.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE,
> >> SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Supported:
> >> 100rel,replaces. Allow-Events: talk,hold,conference.
> >> Max-Forwards: 70.
> >> Content-Type: application/sdp.
> >> Content-Length: 181.
> >> .
> >> v=0.
> >> o=- 1161091665 1161091666 IN IP4 10.1.99.161.
> >> s=Polycom IP Phone.
> >> c=IN IP4 0.0.0.0.
> >> t=0 0.
> >> m=audio 2266 RTP/AVP 0 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> SIP/2.0 407 Proxy Authentication Required.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.161:5060;branch=z9hG4bKaf85a48130E1CF6C;rport=5060;received=81.XXX.XXX.196.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> CSeq: 1 INVITE. Call-ID:
> >> 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Proxy-Authenticate: Digest realm="sip.de.mydomain.org",
> >> nonce="4534dc2bd45af3e3355df978e228223446d25d5b". Server: OpenSer
> >> (1.1.0-tls (i386/linux)). Content-Length: 0. Warning: 392
> >> 2XX.XXX.XXX.98:5060 "Noisy feedback tells:  pid=20907
> >> req_src_ip=81.XXX.XXX.196 req_src_port=5060
> >> in_uri=sip:0891111111 at 2XX.XXX.XXX.97:5060
> >> out_uri=sip:0891111111 at 2XX.XXX.XXX.97:5060 via_cnt==1". .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> ACK sip:0891111111 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bKaf85a48130E1CF6C.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> CSeq: 1 ACK.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE,
> >> SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Max-Forwards: 70.
> >> Content-Length: 0.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> INVITE sip:0891111111 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bKf40b74c7C2612792.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> CSeq: 2 INVITE.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE,
> >> SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Supported:
> >> 100rel,replaces. Allow-Events: talk,hold,conference.
> >> Proxy-Authorization: Digest username="2222222804",
> >> realm="sip.de.mydomain.org",
> >> nonce="4534dc2bd45af3e3355df978e228223446d25d5b",
> >> uri="sip:0891111111 at 2XX.XXX.XXX.97:5060",
> >> response="a690d1208542f7132ef16747f0abb98a", algorithm=MD5.
> >> Max-Forwards: 70. Content-Type: application/sdp. Content-Length:
> >> 181. . v=0. o=- 1161091665 1161091666 IN IP4 10.1.99.161.
> >> s=Polycom IP Phone.
> >> c=IN IP4 0.0.0.0.
> >> t=0 0.
> >> m=audio 2266 RTP/AVP 0 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> SIP/2.0 100 trying -- your call is important to us.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.161:5060;branch=z9hG4bKf40b74c7C2612792;rport=5060;received=81.XXX.XXX.196.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> CSeq: 2 INVITE. Call-ID:
> >> 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org. Server:
> >> OpenSer (1.1.0-tls (i386/linux)). Content-Length: 0.
> >> Warning: 392 2XX.XXX.XXX.98:5060 "Noisy feedback tells:  pid=20907
> >> req_src_ip=81.XXX.XXX.196 req_src_port=5060
> >> in_uri=sip:0891111111 at 2XX.XXX.XXX.97:5060
> >> out_uri=sip:0891111111 at 2XX.XXX.XXX.97:5060 via_cnt==1". .
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> SIP/2.0 200 OK.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.161:5060;rport=5060;received=81.XXX.XXX.196;branch=z9hG4bKf40b74c7C2612792.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=DFB31535-E70817A>.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> CSeq: 2 INVITE. User-Agent: MyMediaGW.
> >> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
> >> Contact: <sip:0891111111 at 2XX.XXX.XXX.97>.
> >> Content-Type: application/sdp.
> >> Content-Length: 232.
> >> .
> >> v=0.
> >> o=root 6068 6069 IN IP4 2XX.XXX.XXX.97.
> >> s=session.
> >> c=IN IP4 2XX.XXX.XXX.98.
> >> t=0 0.
> >> m=audio 36580 RTP/AVP 0 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >> a=fmtp:101 0-16.
> >> a=silenceSupp:off - - - -.
> >> a=nortpproxy:yes.
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> ACK sip:0891111111 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bK4ec65e93B39DC51E.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> CSeq: 2 ACK.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE,
> >> SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Proxy-Authorization:
> >> Digest username="2222222804", realm="sip.de.mydomain.org",
> >> nonce="4534dc2bd45af3e3355df978e228223446d25d5b",
> >> uri="sip:0891111111 at 2XX.XXX.XXX.97:5060",
> >> response="a690d1208542f7132ef16747f0abb98a", algorithm=MD5.
> >> Max-Forwards: 70. Content-Length: 0. .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> SIP/2.0 200 OK.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bK7e63.43f60273.0.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK0378aca9;rport=5060. From:
> >> "0891234567" <sip:0891234567 at sip.de.mydomain.org>;tag=as2ff3bab6.
> >> To: <sip:2222222804 at sip.de.mydomain.org>;tag=4245106-795C21FB.
> >> CSeq: 102 INVITE. Call-ID:
> >> 3a690e9411ee7c8d4523e07315bc2864 at sip.de.mydomain.org. Contact:
> >> <sip:2222222804 at 10.1.99.161:5060>. Record-Route:
> >> <sip:2XX.XXX.XXX.98;lr=on;ftag=as2ff3bab6>. Allow: INVITE, ACK,
> >> BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK,
> >> UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Content-Type:
> >> application/sdp. Content-Length: 185. .
> >> v=0.
> >> o=- 1161091674 1161091674 IN IP4 10.1.99.161.
> >> s=Polycom IP Phone.
> >> c=IN IP4 10.1.99.161.
> >> t=0 0.
> >> m=audio 2268 RTP/AVP 0 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> ACK sip:2222222804 at 81.XXX.XXX.196:5060 SIP/2.0.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as2ff3bab6>.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bK7e63.43f60273.2.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK4365390f;rport=5060. From:
> >> "0891234567" <sip:0891234567 at sip.de.mydomain.org>;tag=as2ff3bab6.
> >> To: <sip:2222222804 at sip.de.mydomain.org>;tag=4245106-795C21FB.
> >> Contact: <sip:0891234567 at 2XX.XXX.XXX.97>. Call-ID:
> >> 3a690e9411ee7c8d4523e07315bc2864 at sip.de.mydomain.org. CSeq: 102
> >> ACK. User-Agent: MyMediaGW.
> >> Max-Forwards: 69.
> >> Content-Length: 0.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> BYE sip:0891234567 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bKc2fe28198F44BA84.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=4245106-795C21FB.
> >> To: "0891234567"
> >> <sip:0891234567 at sip.de.mydomain.org>;tag=as2ff3bab6. Route:
> >> <sip:2XX.XXX.XXX.98;lr=on;ftag=as2ff3bab6>. CSeq: 1 BYE.
> >> Call-ID: 3a690e9411ee7c8d4523e07315bc2864 at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> User-Agent: PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291.
> >> Max-Forwards: 70.
> >> Content-Length: 0.
> >> .
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> SIP/2.0 200 OK.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.161:5060;received=81.XXX.XXX.196;branch=z9hG4bKc2fe28198F44BA84.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=4245106-795C21FB>.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=4245106-795C21FB.
> >> To: "0891234567"
> >> <sip:0891234567 at sip.de.mydomain.org>;tag=as2ff3bab6. Call-ID:
> >> 3a690e9411ee7c8d4523e07315bc2864 at sip.de.mydomain.org. CSeq: 1 BYE.
> >> User-Agent: MyMediaGW. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE,
> >> REFER, SUBSCRIBE, NOTIFY. Contact: <sip:0891234567 at 2XX.XXX.XXX.97>.
> >> Content-Length: 0.
> >> X-Asterisk-HangupCause: Normal Clearing.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> INVITE sip:0891111111 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bK924b3fa8460CEBC3.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> CSeq: 3 INVITE.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE,
> >> SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Supported:
> >> 100rel,replaces. Allow-Events: talk,hold,conference.
> >> Proxy-Authorization: Digest username="2222222804",
> >> realm="sip.de.mydomain.org",
> >> nonce="4534dc2bd45af3e3355df978e228223446d25d5b",
> >> uri="sip:0891111111 at 2XX.XXX.XXX.97:5060",
> >> response="4fafb927667083777a520a6f717fc8d3", algorithm=MD5.
> >> Max-Forwards: 70. Content-Type: application/sdp. Content-Length:
> >> 247. . v=0. o=- 1161091665 1161091667 IN IP4 10.1.99.161.
> >> s=Polycom IP Phone.
> >> c=IN IP4 10.1.99.161.
> >> t=0 0.
> >> a=sendrecv.
> >> m=audio 2266 RTP/AVP 0 8 18 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:8 PCMA/8000.
> >> a=rtpmap:18 G729/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> SIP/2.0 407 Proxy Authentication Required.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.161:5060;branch=z9hG4bK924b3fa8460CEBC3;rport=5060;received=81.XXX.XXX.196.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> CSeq: 3 INVITE. Call-ID:
> >> 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Proxy-Authenticate: Digest realm="sip.de.mydomain.org",
> >> nonce="4534dc3073903ac300e605f4fd2834968e7ef932". Server: OpenSer
> >> (1.1.0-tls (i386/linux)). Content-Length: 0. Warning: 392
> >> 2XX.XXX.XXX.98:5060 "Noisy feedback tells:  pid=20903
> >> req_src_ip=81.XXX.XXX.196 req_src_port=5060
> >> in_uri=sip:0891111111 at 2XX.XXX.XXX.97:5060
> >> out_uri=sip:0891111111 at 2XX.XXX.XXX.97:5060 via_cnt==1". .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> ACK sip:0891111111 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bK924b3fa8460CEBC3.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> CSeq: 3 ACK.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE,
> >> SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Max-Forwards: 70.
> >> Content-Length: 0.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> INVITE sip:0891111111 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bK3fa5014e6D19C349.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> CSeq: 4 INVITE.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE,
> >> SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Supported:
> >> 100rel,replaces. Allow-Events: talk,hold,conference.
> >> Proxy-Authorization: Digest username="2222222804",
> >> realm="sip.de.mydomain.org",
> >> nonce="4534dc3073903ac300e605f4fd2834968e7ef932",
> >> uri="sip:0891111111 at 2XX.XXX.XXX.97:5060",
> >> response="e6f5f00560921aceca9a0329333b720f", algorithm=MD5.
> >> Max-Forwards: 70. Content-Type: application/sdp. Content-Length:
> >> 247. . v=0. o=- 1161091665 1161091667 IN IP4 10.1.99.161.
> >> s=Polycom IP Phone.
> >> c=IN IP4 10.1.99.161.
> >> t=0 0.
> >> a=sendrecv.
> >> m=audio 2266 RTP/AVP 0 8 18 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:8 PCMA/8000.
> >> a=rtpmap:18 G729/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> SIP/2.0 100 trying -- your call is important to us.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.161:5060;branch=z9hG4bK3fa5014e6D19C349;rport=5060;received=81.XXX.XXX.196.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> CSeq: 4 INVITE. Call-ID:
> >> 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org. Server:
> >> OpenSer (1.1.0-tls (i386/linux)). Content-Length: 0.
> >> Warning: 392 2XX.XXX.XXX.98:5060 "Noisy feedback tells:  pid=20903
> >> req_src_ip=81.XXX.XXX.196 req_src_port=5060
> >> in_uri=sip:0891111111 at 2XX.XXX.XXX.97:5060
> >> out_uri=sip:0891111111 at 2XX.XXX.XXX.97:5060 via_cnt==1". .
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> SIP/2.0 200 OK.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.161:5060;rport=5060;received=81.XXX.XXX.196;branch=z9hG4bK3fa5014e6D19C349.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=DFB31535-E70817A>.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> CSeq: 4 INVITE. User-Agent: MyMediaGW.
> >> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
> >> Contact: <sip:0891111111 at 2XX.XXX.XXX.97>.
> >> Content-Type: application/sdp.
> >> Content-Length: 303.
> >> .
> >> v=0.
> >> o=root 6068 6070 IN IP4 2XX.XXX.XXX.97.
> >> s=session.
> >> c=IN IP4 2XX.XXX.XXX.98.
> >> t=0 0.
> >> m=audio 36580 RTP/AVP 0 18 8 101.
> >> a=rtpmap:0 PCMU/8000.
> >> a=rtpmap:18 G729/8000.
> >> a=fmtp:18 annexb=no.
> >> a=rtpmap:8 PCMA/8000.
> >> a=rtpmap:101 telephone-event/8000.
> >> a=fmtp:101 0-16.
> >> a=silenceSupp:off - - - -.
> >> a=nortpproxy:yes.
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> ACK sip:0891111111 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bKca5c1daDE079395.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> CSeq: 4 ACK.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE,
> >> SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER. User-Agent:
> >> PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291. Proxy-Authorization:
> >> Digest username="2222222804", realm="sip.de.mydomain.org",
> >> nonce="4534dc3073903ac300e605f4fd2834968e7ef932",
> >> uri="sip:0891111111 at 2XX.XXX.XXX.97:5060",
> >> response="e6f5f00560921aceca9a0329333b720f", algorithm=MD5.
> >> Max-Forwards: 70. Content-Length: 0. .
> >>
> >> #
> >> U 81.XXX.XXX.196:5060 -> 2XX.XXX.XXX.98:5060
> >> BYE sip:0891111111 at 2XX.XXX.XXX.97:5060 SIP/2.0.
> >> Via: SIP/2.0/UDP 10.1.99.161:5060;branch=z9hG4bKcda270c0BA153C5B.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as7545c33a>.
> >> CSeq: 5 BYE.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> Contact: <sip:2222222804 at 10.1.99.161:5060>.
> >> User-Agent: PolycomSoundPointIP-SPIP_501-UA/2.0.1.0291.
> >> Proxy-Authorization: Digest username="2222222804",
> >> realm="sip.de.mydomain.org",
> >> nonce="4534dc3073903ac300e605f4fd2834968e7ef932",
> >> uri="sip:0891111111 at 2XX.XXX.XXX.97:5060",
> >> response="d1e585adb491da5b0643fcdb7a5d8cef", algorithm=MD5.
> >> Max-Forwards: 70. Content-Length: 0. .
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:5060
> >> SIP/2.0 200 OK.
> >> Via: SIP/2.0/UDP
> >> 10.1.99.161:5060;received=81.XXX.XXX.196;branch=z9hG4bKcda270c0BA153C5B.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=DFB31535-E70817A>.
> >> From: <sip:2222222804 at sip.de.mydomain.org>;tag=DFB31535-E70817A.
> >> To: "Benko" <sip:0891111111 at sip.de.mydomain.org>;tag=as7545c33a.
> >> Call-ID: 69f1042b0b11bac145d95d053db3b93f at sip.de.mydomain.org.
> >> CSeq: 5 BYE. User-Agent: MyMediaGW.
> >> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
> >> Contact: <sip:0891111111 at 2XX.XXX.XXX.97>.
> >> Content-Length: 0.
> >> X-Asterisk-HangupCause: Normal Clearing.
> >> .
> >>
> >> #
> >> U 2XX.XXX.XXX.98:5060 -> 81.XXX.XXX.196:2051
> >> BYE sip:11111111801 at 81.XXX.XXX.196:2051 SIP/2.0.
> >> Record-Route: <sip:2XX.XXX.XXX.98;lr=on;ftag=as0fd69c4e>.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bKf278.897153c6.0.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK13f9319f;rport=5060. From:
> >> <sip:0892222222804 at sip.de.mydomain.org;user=phone>;tag=as0fd69c4e.
> >> To: "801" <sip:11111111801 at sip.de.mydomain.org>;tag=lxlk4gyz7h.
> >> Contact: <sip:0892222222804 at 2XX.XXX.XXX.97>. Call-ID:
> >> 3c27c91d975e-nqjv7jntspdo at snom190. CSeq: 102 BYE.
> >> User-Agent: MyMediaGW.
> >> Max-Forwards: 69.
> >> Content-Length: 0.
> >> .
> >>
> >> #
> >> U 81.XXX.XXX.196:2051 -> 2XX.XXX.XXX.98:5060
> >> SIP/2.0 200 OK.
> >> Via: SIP/2.0/UDP 2XX.XXX.XXX.98;branch=z9hG4bKf278.897153c6.0.
> >> Via: SIP/2.0/UDP
> >> 2XX.XXX.XXX.97:5060;branch=z9hG4bK13f9319f;rport=5060. From:
> >> <sip:0892222222804 at sip.de.mydomain.org;user=phone>;tag=as0fd69c4e.
> >> To: "801" <sip:11111111801 at sip.de.mydomain.org>;tag=lxlk4gyz7h.
> >> Call-ID: 3c27c91d975e-nqjv7jntspdo at snom190. CSeq: 102 BYE.
> >> Contact: <sip:11111111801 at 10.1.99.169:2051;line=9t7zelja>.
> >> User-Agent: snom190/3.60w.
> >> Content-Length: 0.
> >> .
> >>
> >> exit
> >> 78 received, 0 dropped
> >>     
> 