Hu Chunming / sip_server

SIP/2.0 180 Ringing
t: <sip:vijay@atosc.org>;tag=e18a3bd5
f: <sip:amoizard@antisip.com>;tag=293a8
i: 1960129851@one.ip.com
CSeq: 1 INVITE
v: SIP/2.0/UDP one.ip.com:5060;received=two.ip.org
m: <sip:tcchiang@one.ip.com>
Server: 3Com ICD 1.0.1.4.0
l: 0

|
INVITE sip:bob@one.example.com SIP/2.0
Via: SIP/2.0/UDP sip.example.com;branch=7c337f30d7ce.1
  ;maddr=239.128.16.254;ttl=16
Via: SIP/2.0/UDP mouse.wonderland.com
From: "Alice, A," "Alice, A,"<sip:alice@wonderland.com>;tag=1
To: Bob <sip:bob@example.com>
Call-ID: 602214199@mouse.wonderland.com
CSeq: 1 INVITE
Contact: Alice <sip:alice@mouse.wonderland.com>
Call-Info: <http://wwww.example2.com/alice/photo2.jpg> ;purpose=icon2,
     <http://www.example2.com/alice/> ;purpose=info2
Call-Info: <http://wwww.example.com/alice/photo.jpg> ;purpose=icon,
     <http://www.example.com/alice/> ;purpose=info
Alert-Info: <http://wwww.example.com/alice/photo.jpg> ;purpose=icon,
     <http://www.example.com/alice/> ;purpose=info
Accept-Language: da, en-gb;q=0.8, en;q=0.7
Accept-Encoding: da, en-gb;q=0.8, en;q=0.7
Subject: SIP will be discussed, too
Accept: multipart/mixed; boundary=++,application/sdp
Accept: text/plain; q=0.5, text/html,
 text/x-dvi; q=0.8, text/x-c
Accept: audio/*; q=0.2, audio/basic
Allow: INVITE,  ACK , BYE,CANCEL,  SUBSCRIBE  , NOTIFY  
content-type: multipart/mixed; boundary=++
content-encoding: gzip, compress
content-length: 320
MIME-Version: 1.0

--++
Content-Type: application/sdp

v=0
o=user1 53655765 2353687637 IN IP4 128.3.4.5
s=Mbone Audio
t=3149328700 0
i=Discussion of Mbone Engineering Issues
e=mbone@somewhere.com
c=IN IP4 224.2.0.1/127
t=0 0
m=audio 3456 RTP/AVP 0
a=rtpmap:0 PCMU/8000
--++
Content-Type: application/x-osip-chat

Hi guys, this is where i put my signature...just because I want to do it...
--++--

|
REGISTER sip:bell-tel.com SIP/2.0
Via: SIP/2.0/UDP saturn.bell-tel.com
From: <sip:watson@bell-tel.com>;tag=19
To: sip:watson@bell-tel.com
Call-ID: 70710@saturn.bell-tel.com
CSeq: 2 REGISTER
Expires: 0
Contact: *

|
REGISTER sip:bell-tel.com SIP/2.0
Via: SIP/2.0/UDP saturn.bell-tel.com
From: <sip:watson@bell-tel.com>;tag=19
To: sip:watson@bell-tel.com
Call-ID: 70710@saturn.bell-tel.com
CSeq: 3 REGISTER
Contact: sip:tawatson@example.com

|
REGISTER sip:bell-tel.com SIP/2.0
Via: SIP/2.0/UDP pluto.bell-tel.com
From: <sip:jon.diligent@bell-tel.com>;tag=7
To: sip:watson@bell-tel.com
Call-ID: 17320@pluto.bell-tel.com
CSeq: 1 REGISTER
Contact: sip:tawatson@example.com

|
INVITE sip:bob@one.example.com SIP/2.0
Via: SIP/2.0/UDP sip.example.com;branch=7c337f30d7ce.1
  ;maddr=239.128.16.254;ttl=16
Via: SIP/2.0/UDP mouse.wonderland.com
From: Alice <sip:alice@wonderland.com>;tag=1
To: Bob <sip:bob@example.com>
Call-ID: 602214199@mouse.wonderland.com
CSeq: 1 INVITE
Contact: Alice <sip:alice@mouse.wonderland.com>
Subject: SIP will be discussed, too
Content-Type: application/sdp
Content-Length: 187

v=0
o=user1 53655765 2353687637 IN IP4 128.3.4.5
s=Mbone Audio
t=3149328700 0
i=Discussion of Mbone Engineering Issues
e=mbone@somewhere.com
c=IN IP4 224.2.0.1/127
t=0 0
m=audio 3456 RTP/AVP 0
a=rtpmap:0 PCMU/8000

|
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP csvax.cs.caltech.edu;branch=7c337f30d7ce.1
  ;maddr=239.128.16.254;ttl=16
Via: SIP/2.0/UDP north.east.isi.edu
From: Alice <sip:alice@wonderland.com>;tag=1
To: Bob <sip:bob@example.com> ;tag=3141593
Call-ID: 602214199@mouse.wonderland.com
CSeq: 1 INVITE

|
SIP/2.0 200 OK
Via: SIP/2.0/UDP csvax.cs.caltech.edu;branch=7c337f30d7ce.1
  ;maddr=239.128.16.254;ttl=16
Via: SIP/2.0/UDP north.east.isi.edu
From: Alice <sip:alice@wonderland.com>;tag=1
To: Bob <sip:bob@example.com> ;tag=3141593
Call-ID: 602214199@mouse.wonderland.com
CSeq: 1 INVITE
Contact: <sip:bob@one.example.com>

|
ACK sip:bob@one.example.com SIP/2.0
Via: SIP/2.0/UDP north.east.isi.edu
From: Alice <sip:alice@wonderland.com>;tag=1
To: Bob <sip:bob@example.com> ;tag=3141593
Call-ID: 602214199@mouse.wonderland.com
CSeq: 1 ACK

|
INVITE sip:watson@boston.bell-tel.com SIP/2.0
Via: SIP/2.0/UDP kton.bell-tel.com
From: A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To: T. Watson <sip:watson@bell-tel.com>
Call-ID: 662606876@kton.bell-tel.com
CSeq: 1 INVITE
Contact: <sip:a.g.bell@kton.bell-tel.com>
Subject: Mr. Watson, come here.
Content-Type: application/sdp
Content-Length: 227

v=0
o=bell 53655765 2353687637 IN IP4 128.3.4.5
s=Mr. Watson, come here.
t=3149328600 0
c=IN IP4 kton.bell-tel.com
m=audio 3456 RTP/AVP 0 3 4 5
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000
a=rtpmap:4 G723/8000
a=rtpmap:5 DVI4/8000
|
SIP/2.0 100 Trying
Via: SIP/2.0/UDP kton.bell-tel.com
From: A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To: T. Watson <sip:watson@bell-tel.com> ;tag=37462311
Call-ID: 662606876@kton.bell-tel.com
CSeq: 1 INVITE
Content-Length: 0

|
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP kton.bell-tel.com
From: A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To: T. Watson <sip:watson@bell-tel.com> ;tag=37462311
Call-ID: 662606876@kton.bell-tel.com
CSeq: 1 INVITE
Content-Length: 0

|
SIP/2.0 182 Queued, 2 callers ahead
Via: SIP/2.0/UDP kton.bell-tel.com
From: A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To: T. Watson <sip:watson@bell-tel.com> ;tag=37462311
Call-ID: 662606876@kton.bell-tel.com
CSeq: 1 INVITE
Content-Length: 0

|
SIP/2.0 182 Queued, 1 caller ahead
Via: SIP/2.0/UDP kton.bell-tel.com
From: A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To: T. Watson <sip:watson@bell-tel.com> ;tag=37462311
Call-ID: 662606876@kton.bell-tel.com
CSeq: 1 INVITE
Content-Length: 0

|
SIP/2.0 200 OK
Via: SIP/2.0/UDP kton.bell-tel.com
From: A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To: <sip:watson@bell-tel.com> ;tag=37462311
Call-ID: 662606876@kton.bell-tel.com
CSeq: 1 INVITE
Contact: sip:watson@boston.bell-tel.com
Content-Type: application/sdp
Content-Length: 130

v=0
o=watson 4858949 4858949 IN IP4 192.1.2.3
s=I'm on my way
t=3149329600 0
c=IN IP4 boston.bell-tel.com
m=audio 5004 RTP/AVP 0 3
a=rtpmap:0 PCMU/8000
a=rtpmap:3 GSM/8000

|
ACK sip:watson@boston.bell-tel.com SIP/2.0
Via: SIP/2.0/UDP kton.bell-tel.com
From: A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To: T. Watson <sip:watson@bell-tel.com> ;tag=37462311
Call-ID: 3298420296@kton.bell-tel.com
CSeq: 1 ACK

|
BYE sip:watson@boston.bell-tel.com SIP/2.0
Via: SIP/2.0/UDP kton.bell-tel.com
From: A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To: T. A. Watson <sip:watson@bell-tel.com> ;tag=37462311
Call-ID: 3298420296@kton.bell-tel.com
CSeq: 2 BYE

|
INVITE sip:t.watson@ieee.org SIP/2.0
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31415@c.bell-tel.com
CSeq:    1 INVITE
Contact: sip:a.g.bell@c.bell-tel.com

|
INVITE sip:watson@h.bell-tel.com SIP/2.0
Via:     SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.1
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31415@c.bell-tel.com
CSeq:    1 INVITE
Contact: sip:a.g.bell@c.bell-tel.com

|
SIP/2.0 404 Not Found
Via:     SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.1
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>;tag=87454273
Call-ID: 31415@c.bell-tel.com
CSeq:    1 INVITE

|
ACK sip:watson@h.bell-tel.com SIP/2.0
Via:     SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.1
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>;tag=87454273
Call-ID: 31415@c.bell-tel.com
CSeq:    1 ACK

|
INVITE sip:watson@acm.org SIP/2.0
Via:     SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.2
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31415@c.bell-tel.com
CSeq:    1 INVITE
Contact: sip:a.g.bell@c.bell-tel.com

|
INVITE sip:t.watson@x.bell-tel.com SIP/2.0
Via:     SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.3
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31415@c.bell-tel.com
CSeq:    1 INVITE
Contact: sip:a.g.bell@c.bell-tel.com

|
INVITE sip:watson@y.bell-tel.com SIP/2.0
Via:     SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.4
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31415@c.bell-tel.com
CSeq:    1 INVITE
Contact: sip:a.g.bell@c.bell-tel.com

|
SIP/2.0 200 OK
Via:      SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.3
Via:      SIP/2.0/UDP c.bell-tel.com
From:     A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:       T. Watson <sip:t.watson@ieee.org> ;tag=192137601
Call-ID:  31415@c.bell-tel.com
CSeq:     1 INVITE
Contact:  sip:t.watson@x.bell-tel.com

|
SIP/2.0 200 OK
Via:      SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.4
Via:      SIP/2.0/UDP c.bell-tel.com
Contact:  sip:t.watson@y.bell-tel.com
From:     A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:       T. Watson <sip:t.watson@ieee.org> ;tag=35253448
Call-ID:  31415@c.bell-tel.com
CSeq:     1 INVITE

|
CANCEL sip:watson@acm.org SIP/2.0
Via:     SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.2
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31415@c.bell-tel.com
CSeq:    1 CANCEL

|
SIP/2.0 200 OK
Via:     SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.2
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31415@c.bell-tel.com
CSeq:    1 CANCEL

|
SIP/2.0 487 Request Terminated
Via:     SIP/2.0/UDP sip.ieee.org ;branch=3d8a50dbf5a28d.2
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31415@c.bell-tel.com
CSeq:    1 INVITE

|
ACK sip:t.watson@x.bell-tel.com SIP/2.0
Via:      SIP/2.0/UDP c.bell-tel.com
From:     A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:       T. Watson <sip:t.watson@ieee.org>;tag=192137601
Call-ID:  31415@c.bell-tel.com
CSeq:     1 ACK

|
ACK sip:watson@y.bell-tel.com SIP/2.0
Via:      SIP/2.0/UDP c.bell-tel.com
From:     A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:       T. Watson <sip:t.watson@ieee.org>;tag=35253448
Call-ID:  31415@c.bell-tel.com
CSeq:     1 ACK

|
BYE sip:watson@y.bell-tel.com SIP/2.0
Via:      SIP/2.0/UDP c.bell-tel.com
From:     A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:       T. Watson <sip:t.watson@ieee.org>;tag=35253448
Call-ID:  31415@c.bell-tel.com
CSeq:     2 BYE

|
SIP/2.0 200 OK
Via:      SIP/2.0/UDP c.bell-tel.com
From:     A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:       T. Watson <sip:t.watson@ieee.org>;tag=35253448
Call-ID:  31415@c.bell-tel.com
CSeq:     2 BYE

|
SIP/2.0 302 Moved temporarily
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:      T. Watson <sip:t.watson@ieee.org>;tag=72538263
Call-ID: 31415@c.bell-tel.com
CSeq:    1 INVITE
Contact: sip:watson@h.bell-tel.com,
 sip:watson@acm.org, sip:t.watson@x.bell-tel.com,
 sip:watson@y.bell-tel.com

|
SIP/2.0 302 Moved temporarily
From: Charlie <sip:charlie@caller.com>;tag=5
To: Alice <sip:alice@wonderland.com> ;tag=2332462
Call-ID: 27182@caller.com
Contact: sip:bob@example.com
Expires: Wed, 29 Jul 1998 9:00:00 GMT
CSeq: 1 INVITE

|
INVITE sip:bob@example.com SIP/2.0
Via: SIP/2.0/UDP h.caller.com
From: <sip:charlie@caller.com>;tag=5
To: sip:alice@wonderland.com
Call-ID: 27182@caller.com
CSeq: 2 INVITE
Contact: sip:charlie@h.caller.com

|
INVITE sip:alice@wonderland.com SIP/2.0
Via: SIP/2.0/UDP h.caller.com
From: <sip:charlie@caller.com>;tag=5
To: Alice <sip:alice@wonderland.com>
Call-ID: 27182@caller.com
CSeq: 1 INVITE
Contact: sip:charlie@h.caller.com

|
SIP/2.0 302 Moved temporarily
Via: SIP/2.0/UDP h.caller.com
From: <sip:charlie@caller.com>;tag=5
To: Alice <sip:alice@wonderland.com>
Call-ID: 27182@caller.com
CSeq: 1 INVITE
Contact: <sip:alice@wonderland.com:5080;maddr=spare.caller.com>

|
INVITE sip:alice@wonderland.com SIP/2.0
Via: SIP/2.0/UDP h.caller.com
From: <sip:charlie@caller.com>;tag=5
To: Alice <sip:alice@wonderland.com>
Call-ID: 27182@caller.com
CSeq: 2 INVITE
Contact: sip:charlie@h.caller.com

|
SIP/2.0 606 Not Acceptable
Via: SIP/2.0/UDP c.bell-tel.com
From: A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To: T. Watson <sip:t.watson@ieee.org> ;tag=7434264
Call-ID: 14142@c.bell-tel.com
CSeq: 1 INVITE
Warning: 370 "Insufficient bandwidth (only have ISDN)",
  305 "Incompatible media format",
  330 "Multicast not available"
Content-Type: application/sdp
Content-Length: 130

v=0
o=c 3149329138 3149329165 IN IP4 38.245.76.2
s=Let's talk
t=3149328630 0
b=CT:128
c=IN IP4 x.bell-tel.com
m=audio 3456 RTP/AVP 5 0 7
a=rtpmap:5 DVI4/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:7 LPC/8000
m=video 2232 RTP/AVP 31
a=rtpmap:31 H261/90000

|
OPTIONS sip:bob@example.com SIP/2.0
Via: SIP/2.0/UDP cat.wonderland.com
From: Alice <sip:alice@wonderland.com>;tag=1
To: Bob <sip:bob@example.com>
Call-ID: 6378@cat.wonderland.com
CSeq: 1 OPTIONS
Accept: application/sdp

|
SIP/2.0 200 OK
From: Alice <sip:alice@wonderland.com>;tag=1
To: Bob <sip:bob@example.com> ;tag=376364382
Call-ID: 6378@cat.wonderland.com
CSeq: 1 OPTIONS
Content-Length: 81
Content-Type: application/sdp

v=0
o=alice 3149329138 3149329165 IN IP4 24.124.37.3
s=Security problems
t=3149328650 0
c=IN IP4 24.124.37.3
m=audio 0 RTP/AVP 0 1 3 99
a=rtpmap:0 PCMU/8000
a=rtpmap:1 1016/8000
a=rtpmap:3 GSM/8000
a=rtpmap:99 SX7300/8000
m=video 0 RTP/AVP 31 34
a=rtpmap:31 H261/90000
a=rtpmap:34 H263/90000

|
INVITE sip:vivekg@chair.dnrc.bell-labs.com SIP/2.0
TO :
 <sip:vivekg@chair.dnrc.bell-labs.com > ;   tag    = 1918181833n
From   : "J Rosenberg " <sip:jdrosen@lucent.com>
  ;
  tag = 98asjd8
Call-ID
 : 0ha0isndaksdj@10.1.1.1
cseq: 8
  INVITE
Via  : SIP  /   2.0
 /UDP
    135.180.130.133
Subject :
NewFangledHeader:   newfangled value
 more newfangled value
Content-Type: application/sdp
v:  SIP  / 2.0  / TCP     12.3.4.5   ;
  branch  =   9ikj8  ,
 SIP  /    2.0   / UDP  1.2.3.4   ; hidden
m:"Quoted string " <sip:jdrosen@bell-labs.com> ; newparam =
 newvalue ;
  secondparam = secondvalue  ; q = 0.33
  (((nested comments) and (more)))   ,
 tel:4443322

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
INVITE sip:user@company.com SIP/2.0
To: sip:j_user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.1.1.1
Require: newfeature1, newfeature2
Proxy-Require: newfeature3, newfeature4
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133

|
INVITE name:John_Smith SIP/2.0
To: isbn:2983792873
From: http://www.cs.columbia.edu
Call-ID: 0ha0isndaksdj@10.1.2.3
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC
|
REGISTER sip:company.com SIP/2.0
To: sip:user@company.com
From: sip:user@company.com
Contact: sip:user@host.company.com
Call-ID: 0ha0isndaksdj@10.0.0.1
CSeq: 8 REGISTER
Via: SIP/2.0/UDP 135.180.130.133
Expires: Sat, 01 Dec 2040 16:00:00 GMT

|
INVITE sip:user@company.com SIP/2.0
To: sip:j_user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.0.0.1
Accept: text/newformat
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp

v=0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
INVITE sip:user@comapny.com SIP/2.0
To: sip:j.user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.0.0.1
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/newformat

<audio>
 <pcmu port="443"/>
</audio>

|
NEWMETHOD sip:user@comapny.com SIP/2.0
To: sip:j.user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.0.0.1
CSeq: 8 NEWMETHOD
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
NEWMETHOD sip:user@comapny.com SIP/2.0
To: sip:j.user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.0.1.1
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
REGISTER sip:company.com SIP/2.0
To: sip:j.user@company.com
From: sip:j.user@company.com
Call-ID: 0ha0isndaksdj@10.0.1.1
CSeq: 8 REGISTER
Via: SIP/2.0/UDP 135.180.130.133
Authorization: Super-PGP ajsohdaosdh0asyhdaind08yasdknasd09asidhas0d8

|
REGISTER sip:company.com SIP/2.0
To: sip:j.user@company.com
From: sip:j.user@company.com
Call-ID: 0ha0isndaksdj@10.0.2.2
Contact: sip:j.user@host.company.com
CSeq: 8 REGISTER
Via: SIP/2.0/UDP 135.180.130.133
Content-Length: 0

|
INVITE sip:joe@company.com SIP/2.0
To: sip:joe@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isnda977644900765@10.0.0.1
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
INVITE sip:user@company.com SIP/2.0
CSeq: 0 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
INVITE sip:user@company.com SIP/2.0
Via: SIP/2.0/UDP 135.180.130.133
CSeq: 0 INVITE
Call-ID: 98asdh@10.1.1.1
Call-ID: 98asdh@10.1.1.2
From: sip:caller@university.edu
From: sip:caller@organization.org
To: sip:user@company.com
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
INVITE sip:user@company.com SIP/2.0
Via: SIP/2.0/UDP 135.180.130.133
CSeq: 0 INVITE
Call-ID: 98asdh@10.1.1.2
Expires: Thu, 44 Dec 19999 16:00:00 EDT
From: sip:caller@university.edu
To: sip:user@company.com
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
SIP/2.0 200 OK
Via: SIP/2.0/UDP 135.180.130.57;branch=0
Via: SIP/2.0/UDP 255.255.255.255;branch=0
Call-ID: 0384840201@10.1.1.1
CSeq: 0 INVITE
From: sip:user@company.com
To: sip:user@university.edu;tag=2229
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 224.2.17.12/127
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
INVITE sip:user@company.com SIP/2.0
To: sip:j.user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.0.0.1
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133;;,;
Contact: "" <> ;,"Joe" <sip:joe@org.org>;;,,;;
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
INVITE sip:user@company.com SIP/2.0
To: sip:j.user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.0.0.1
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 9999

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
INVITE sip:user@company.com SIP/2.0
To: sip:j.user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.0.0.1
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: -999

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|
INVITE sip:user@company.com SIP/2.0
To: sip:j.user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.0.0.1
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 138

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC
asdpasd08asdsdk:;;asd
 a0sdjhg8a0''...'';;;;

|
INVITE sip:user@company.com SIP/2.0
To: "Mr. J. User <sip:j.user@company.com>
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.0.0.1
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 138

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

|INVITE request with a semicolon-separated parameter in the "user" part.
INVITE sip:user;par=u%40h.com@company.com SIP/2.0
To: sip:j_user@company.com
From: sip:caller@university.edu
Call-ID: 0ha0isndaksdj@10.1.1.1
CSeq: 8 INVITE
Via: SIP/2.0/UDP 135.180.130.133

|is illegal because the Request-URI has been enclosed within in "<>".
INVITE <sip:user@company.com> SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 1@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 165

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| This INVITE has illegal LWS within the SIP URL.
INVITE sip:user@company.com; transport=udp SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 2@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 165

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| This INVITE has illegal >1 SP between elements of the Request-URI.
INVITE sip:user@company.com  SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 3@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 165

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| INVITE with a legal SIP URL containing escaped characters
INVITE sip:sip%3Auser%40example.com@company.com;other-param=summit SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 4@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 165

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| INVITE with the illegal use of escaped headers in Request-URI
INVITE sip:user@company.com?Route=%3Csip:sip.example.com%3E SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 5@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 165

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| INVITE containing an unknown in the Request URI
INVITE name:user SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 6@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 165

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| OPTIONS with no LWS between display name and <
OPTIONS sip:user@company.com SIP/2.0
To: sip:user@company.com
From: "caller"<sip:caller@example.com>
Call-ID: 1234abcd@10.0.0.1
CSeq: 1 OPTIONS
Via: SIP/2.0/UDP 135.180.130.133

| OPTIONS with extran LWS between display name and <
OPTIONS sip:user@company.com SIP/2.0
To: sip:user@company.com
From: "caller"    <sip:caller@example.com>
Call-ID: 1234abcd@10.0.0.1
CSeq: 2 OPTIONS
Via: SIP/2.0/UDP 135.180.130.133

| INVITE with an illegal SIP Date format.
INVITE sip:user@company.com SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 7@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Expires: Fri, 01 Jan 2010 16:00:00 EST
Content-Type: application/sdp
Content-Length: 165

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| INVITE with Passed Expries Time
INVITE sip:user@company.com SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 8@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Expires: Thu, 01 Dec 1994 16:00:00 GMT
Content-Type: application/sdp
Content-Length: 165

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| INVITE with Max-Forwards Set to Zero
INVITE sip:user@company.com SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 9@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Max-Forwards: 0
Content-Type: application/sdp
Content-Length: 165

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| REGISTER with a Escaped Header in a Legal SIP URL of a Contact
REGISTER sip:company.com SIP/2.0
To: sip:user@company.com
From: sip:user@company.com
Contact: sip:user@host.company.com
Call-ID: k345asrl3fdbv@10.0.0.1
CSeq: 1 REGISTER
Via: SIP/2.0/UDP 135.180.130.133
Contact: <sip:user@example.com?Route=%3Csip:sip.example.com%3E>

| REGISTER with a Escaped Header in a Illegal SIP URL of a Contact
REGISTER sip:company.com SIP/2.0
To: sip:user@company.com
From: sip:user@company.com
Contact: sip:user@host.company.com
Call-ID: k345asrl3fdbv@10.0.0.1
CSeq: 1 REGISTER
Via: SIP/2.0/UDP 135.180.130.133
Contact: sip:user@example.com?Route=%3Csip:sip.example.com%3E

| INVITE with Long Values in Headers
INVITE sip:user@company.com SIP/2.0
To: "I have a user name of extreme proportion"
 <sip:user@company.com:6000;other-param=1234567890somethingelselong1234567890>
From: sip:caller@university.edu
Call-ID:
 kl24ahsd546folnyt2vbak9sad98u23naodiunzds09a3bqw0sdfbsk34poouymnae004
 3nsed09mfkvc74bd0cuwnms05dknw87hjpobd76f
CSeq: 1 INVITE
My-State: sldkjflzdsfaret0803adgaasd0afds0asdaasd
Via: SIP/2.0/UDP sip33.example.com
Via: SIP/2.0/UDP sip32.example.com
Via: SIP/2.0/UDP sip31.example.com
Via: SIP/2.0/UDP sip30.example.com
Via: SIP/2.0/UDP sip29.example.com
Via: SIP/2.0/UDP sip28.example.com
Via: SIP/2.0/UDP sip27.example.com
Via: SIP/2.0/UDP sip26.example.com
Via: SIP/2.0/UDP sip25.example.com
Via: SIP/2.0/UDP sip24.example.com
Via: SIP/2.0/UDP sip23.example.com
Via: SIP/2.0/UDP sip22.example.com
Via: SIP/2.0/UDP sip21.example.com
Via: SIP/2.0/UDP sip20.example.com
Via: SIP/2.0/UDP sip19.example.com
Via: SIP/2.0/UDP sip18.example.com
Via: SIP/2.0/UDP sip17.example.com
Via: SIP/2.0/UDP sip16.example.com
Via: SIP/2.0/UDP sip15.example.com
Via: SIP/2.0/UDP sip14.example.com
Via: SIP/2.0/UDP sip13.example.com
Via: SIP/2.0/UDP sip12.example.com
Via: SIP/2.0/UDP sip11.example.com
Via: SIP/2.0/UDP sip10.example.com
Via: SIP/2.0/UDP sip9.example.com
Via: SIP/2.0/UDP sip8.example.com
Via: SIP/2.0/UDP sip7.example.com
Via: SIP/2.0/UDP sip6.example.com
Via: SIP/2.0/UDP sip5.example.com
Via: SIP/2.0/UDP sip4.example.com
Via: SIP/2.0/UDP sip3.example.com
Via: SIP/2.0/UDP sip2.example.com
Via: SIP/2.0/UDP sip1.example.com
Via: SIP/2.0/UDP
 host.example.com;received=135.180.130.133;branch=C1C3344E2710000000E2
 99E568E7potato10potato0potato0
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=3149328700 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC

| OPTIONS with multiple headers.
OPTIONS sip:135.180.130.133 SIP/2.0
Via: SIP/2.0/UDP company.com:5604
From: sip:iuser@company.com
To: sip:user@135.180.130.133
Call-ID: 1804928587@company.com
CSeq: 1 OPTIONS
Expires: 3600
Contact: sip:host.company.com

| INVITE with large number of SDP attributes and telephone subscriber Request-URI (the content-length is also wrong)
INVITE sip:+1-972-555-2222;phone-context=name%40domain;new=user?%22Route%3a%20X%40Y%3bZ=W%22@gw1.wcom.com;user=phone SIP/2.0
Via: SIP/2.0/UDP iftgw.there.com:5060
From: sip:+1-303-555-1111@ift.here.com;user=phone
To: sip:+1-650-555-2222@ss1.wcom.com;user=phone
Call-ID: 1717@ift.here.com
CSeq: 56 INVITE
Content-Type: application/sdp
Content-Length: 320

v=0
o=faxgw1 2890844527 2890844527 IN IP4 iftgw.there.com
s=Session SDP
c=IN IP4 iftmg.there.com
t=0 0
m=image 49172 udptl t38
a=T38FaxVersion:0
a=T38maxBitRate:14400
a=T38FaxFillBitRemoval:0
a=T38FaxTranscodingMMR:0
a=T38FaxTranscodingJBIG:0
a=T38FaxRateManagement:transferredTCF
a=T38FaxMaxBuffer:260
a=T38FaxUdpEC:t38UDPR

| REGISTER with a contact parameter.

REGISTER sip:bell-tel.com SIP/2.0
Via: SIP/2.0/UDP saturn.bell-tel.com
From: sip:watson@bell-tel.com
To: sip:watson@bell-tel.com
Call-ID: 70710@saturn.bell-tel.com
CSeq: 2 REGISTER
Contact: sip:+1-972-555-2222@gw1.wcom.com;user=phone

| REGISTER with a url parameter.
REGISTER sip:bell-tel.com SIP/2.0
Via: SIP/2.0/UDP saturn.bell-tel.com
From: sip:watson@bell-tel.com
To: sip:watson@bell-tel.com
Call-ID: 70710@saturn.bell-tel.com
CSeq: 3 REGISTER
Contact: <sip:+1-972-555-2222@gw1.wcom.com;user=phone>

| INVITE with an Unquoted Display Name Containing Multiple Tokens (????)
INVITE sip:t.watson@ieee.org SIP/2.0
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31414@c.bell-tel.com
CSeq:    1 INVITE

| INVITE with an Unquoted Display Name Containg Non-Token Characters (should fail...)
INVITE sip:t.watson@ieee.org SIP/2.0
Via:     SIP/2.0/UDP c.bell-tel.com
From:    Bell, Alexander <sip:a.g.bell@bell-tel.com>
To:      Watson, Thomas <sip:t.watson@ieee.org>
Call-ID: 31415@c.bell-tel.com
CSeq:    1 INVITE

| INVITE with Unknown (Higher) Protocol Version in Start Line
INVITE sip:t.watson@ieee.org SIP/7.0
Via:     SIP/2.0/UDP c.bell-tel.com
From:    A. Bell <sip:a.g.bell@bell-tel.com>
To:      T. Watson <sip:t.watson@ieee.org>
Call-ID: 31417@c.bell-tel.com
CSeq:    1 INVITE

| INVITE with record-route
INVITE sip:+1-650-555-2222@iftgw.there.com;user=phone SIP/2.0
Via: SIP/2.0/UDP ss1.wcom.com:5060; branch=2d007.1
Via: SIP/2.0/UDP ift.here.com:5060
Record-Route: <sip:+1-650-555-2222@iftgw.there.com;
 maddr=ss1.wcom.com>
From: <sip:+1-303-555-1111@ift.here.com;user=phone>
To: <sip:+1-650-555-2222@ss1.wcom.com;user=phone>
Call-ID: 1717@ift.here.com
CSeq: 17 INVITE
Contact: <sip:+1-303-555-1111@ift.here.com;user=phone>
Content-Type: application/sdp
Content-Length: 151

v=0
o=IFAXTERMINAL01 2890844527 2890844527 IN IP4 ift.here.com
s=Session SDP
c=IN IP4 iftmg.here.com
t=0 0
m=audio 3456 RTP/AVP 0
a=rtpmap:0 PCMU/8000
|
SIP/2.0 407 Proxy Authorization Required
Via: SIP/2.0/UDP here.com:5060
From: BigGuy <sip:UserA@here.com>
To: LittleGuy <sip:UserB@there.com>
Call-ID: 12345600@here.com
CSeq: 1 INVITE
Proxy-Authenticate: Digest realm="MCI WorldCom SIP",
 domain="sip:ss1.wcom.com", nonce="f84f1cec41e6cbe5aea9c8e88d359",
 opaque="", stale=FALSE, algorithm=MD5
Content-Length: 0

|
INVITE sip:UserB@there.com SIP/2.0
Via: SIP/2.0/UDP here.com:5060
From: BigGuy <sip:UserA@here.com>
To: LittleGuy <sip:UserB@there.com>
Call-ID: 12345601@here.com
CSeq: 1 INVITE
Contact: <sip:UserA@100.101.102.103>
Authorization:Digest username="UserA",
 realm="MCI WorldCom SIP",
 nonce="wf84f1ceczx41ae6cbe5aea9c8e88d359", opaque="",
 uri="sip:ss1.wcom.com", response="42ce3cef44b22f50c6a6071bc8"
Content-Type: application/sdp
Content-Length: 140

v=0
o=UserA 2890844526 2890844526 IN IP4 here.com
s=Session SDP
c=IN IP4 100.101.102.103
t=0 0
m=audio 49172 RTP/AVP 0
a=rtpmap:0 PCMU/8000
|
SIP/2.0 407 Proxy Authorization Required
Via: SIP/2.0/UDP here.com:5060
From: BigGuy <sip:UserA@here.com>
To: LittleGuy <sip:UserB@there.com>
Call-ID: 12345600@here.com
CSeq: 1 INVITE
Proxy-Authenticate: Digest realm="WorldCom SIP",
 domain="sip:ss1.wcom.com", nonce="wf84f1cczx41ae6cbeaea9ce88d359",
 opaque="", stale=FALSE, algorithm=MD5
Content-Length: 0

|
INVITE sip:UserB@there.com SIP/2.0
Via: SIP/2.0/UDP here.com:5060
From: BigGuy <sip:UserA@here.com>
To: LittleGuy <sip:UserB@there.com>
Call-ID: 12345600@here.com
CSeq: 2 INVITE
Contact: <sip:UserA@100.101.102.103>
Proxy-Authorization:Digest username="UserA", realm="WorldCom SIP",
 nonce="wf84f1ceczx41ae6cbe5aea9c8e88d359", opaque="",
 uri="sip:ss1.wcom.com", response="42ce3cef44b22f50c6a6071bc8"
Content-Type: application/sdp
Content-Length: 140

v=0
o=UserA 2890844526 2890844526 IN IP4 here.com
s=Session SDP
c=IN IP4 100.101.102.103
t=0 0
m=audio 49172 RTP/AVP 0
a=rtpmap:0 PCMU/8000
|
SIP/2.0 407 Proxy Authorization Required
Via: SIP/2.0/UDP ss1.wcom.com:5060;branch=230f2.1
Via: SIP/2.0/UDP here.com:5060
Record-Route: <sip:UserB@there.com;maddr=ss1.wcom.com>
From: BigGuy <sip:UserA@here.com>
To: LittleGuy <sip:UserB@there.com>;tag=838209
Call-ID: 12345600@here.com
CSeq: 2 INVITE
Proxy-Authenticate: Digest realm="MCI SIP",
 domain="sip:ss2.mci.com", nonce="c1e22c41ae6cbe5ae983a9c8e88d359",
 opaque="", stale=FALSE, algorithm=MD5
Content-Length: 0

|
SIP/2.0 407 Proxy Authorization Required
Via: SIP/2.0/UDP here.com:5060
Record-Route: <sip:UserB@there.com;maddr=ss1.wcom.com>
From: BigGuy <sip:UserA@here.com>
To: LittleGuy <sip:UserB@there.com>;tag=2341d
Call-ID: 12345600@here.com
CSeq: 2 INVITE
Proxy-Authenticate: Digest realm="MCI SIP",
 domain="sip:ss2.mci.com", nonce="c1e22c41ae6cbe5ae983a9c8e88d359",
 opaque="", stale=FALSE, algorithm=MD5
Content-Length: 0

|
INVITE sip:UserB@there.com SIP/2.0
Via: SIP/2.0/UDP here.com:5060
From: BigGuy <sip:UserA@here.com>
To: LittleGuy <sip:UserB@there.com>
Call-ID: 12345600@here.com
CSeq: 3 INVITE
Contact: <sip:UserA@100.101.102.103>
Proxy-Authorization:Digest username="UserA", realm="WorldCom SIP",
 nonce="wf84f1ceczx41ae6cbe5aea9c8e88d359", opaque="",
 uri="sip:ss1.wcom.com", response="42ce3cef44b22f50c6a6071bc8"
Proxy-Authorization:Digest username="UserA", realm="MCI SIP",
 nonce="c1e22c41ae6cbe5ae983a9c8e88d359", opaque="",
 uri="sip:ss2.mci.com", response="f44ab22f150c6a56071bce8"
Content-Type: application/sdp
Content-Length: 140

v=0
o=UserA 2890844526 2890844526 IN IP4 here.com
s=Session SDP
c=IN IP4 100.101.102.103
t=0 0
m=audio 49172 RTP/AVP 0
a=rtpmap:0 PCMU/8000
|
INVITE sip:UserB@there.com SIP/2.0
Via: SIP/2.0/UDP ss1.wcom.com:5060;branch=230f2.1
Via: SIP/2.0/UDP here.com:5060
Record-Route: <sip:UserB@there.com;maddr=ss1.wcom.com>
From: BigGuy <sip:UserA@here.com>
To: LittleGuy <sip:UserB@there.com>
Call-ID: 12345600@here.com
CSeq: 3 INVITE
Contact: <sip:UserA@100.101.102.103>
Proxy-Authorization:Digest username="UserA", realm="MCI SIP",
 nonce="c1e22c41ae6cbe5ae983a9c8e88d359", opaque="",
 uri="sip:ss2.mci.com", response="f44ab22f150c6a56071bce8"
Content-Type: application/sdp
Content-Length: 140

v=0
o=UserA 2890844526 2890844526 IN IP4 here.com
s=Session SDP
c=IN IP4 100.101.102.103
t=0 0
m=audio 49172 RTP/AVP 0
a=rtpmap:0 PCMU/8000
|