#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  INVITE sip:6002@192.168.30.254:5060;user=phone SIP/2.0..Via: SIP/2.0/UDP 19
  2.168.30.194:5060;branch=z9hG4bKcc02b101F5AF2A26..From: "David Brillert" <s
  ip:6010@192.168.30.254>;tag=6B3155DA-7B50E38F..To: <sip:6002@192.168.30.254
  ;user=phone>..CSeq: 1 INVITE..Call-ID: 690f309b-53004960-31d34975@192.168.3
  0.194..Contact: <sip:6010@192.168.30.194:5060>..Allow: INVITE, ACK, BYE, CA
  NCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User
  -Agent: PolycomSoundPointIP-SPIP_550-UA/3.1.1.0137..Accept-Language: en..Su
  pported: 100rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards:
   70..Content-Type: application/sdp..Content-Length: 215....v=0..o=- 1232659
  291 1232659291 IN IP4 192.168.30.194..s=Polycom IP Phone..c=IN IP4 192.168.
  30.194..t=0 0..m=audio 2226 RTP/AVP 0 8 101..a=rtpmap:0 PCMU/8000..a=rtpmap
  :8 PCMA/8000..a=rtpmap:101 telephone-event/8000..
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  SIP/2.0 407 Proxy Authentication Required..Via: SIP/2.0/UDP 192.168.30.194:
  5060;branch=z9hG4bKcc02b101F5AF2A26;received=192.168.30.194..From: "David B
  rillert" <sip:6010@192.168.30.254>;tag=6B3155DA-7B50E38F..To: <sip:6002@192
  .168.30.254;user=phone>;tag=as0f629857..Call-ID: 690f309b-53004960-31d34975
  @192.168.30.194..CSeq: 1 INVITE..User-Agent: Asterisk PBX (Fireworx)..Allow
  : INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: r
  eplaces..Proxy-Authenticate: Digest algorithm=MD5, realm="fireworx", nonce=
  "26d7deb2"..Content-Length: 0....
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  ACK sip:6002@192.168.30.254:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.194:5
  060;branch=z9hG4bKcc02b101F5AF2A26..From: "David Brillert" <sip:6010@192.16
  8.30.254>;tag=6B3155DA-7B50E38F..To: <sip:6002@192.168.30.254;user=phone>;t
  ag=as0f629857..CSeq: 1 ACK..Call-ID: 690f309b-53004960-31d34975@192.168.30.
  194..Contact: <sip:6010@192.168.30.194:5060>..Allow: INVITE, ACK, BYE, CANC
  EL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_550-UA/3.1.1.0137..Accept-Language: en..Max-
  Forwards: 70..Content-Length: 0....
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  INVITE sip:6002@192.168.30.254:5060;user=phone SIP/2.0..Via: SIP/2.0/UDP 19
  2.168.30.194:5060;branch=z9hG4bK27ab79445DEE6E9..From: "David Brillert" <si
  p:6010@192.168.30.254>;tag=6B3155DA-7B50E38F..To: <sip:6002@192.168.30.254;
  user=phone>..CSeq: 2 INVITE..Call-ID: 690f309b-53004960-31d34975@192.168.30
  .194..Contact: <sip:6010@192.168.30.194:5060>..Allow: INVITE, ACK, BYE, CAN
  CEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-
  Agent: PolycomSoundPointIP-SPIP_550-UA/3.1.1.0137..Accept-Language: en..Sup
  ported: 100rel,replaces..Allow-Events: talk,hold,conference..Proxy-Authoriz
  ation: Digest username="6010", realm="fireworx", nonce="26d7deb2", uri="sip
  :6002@192.168.30.254:5060;user=phone", response="366296c697604c25aaeabf24fd
  7897ab", algorithm=MD5..Max-Forwards: 70..Content-Type: application/sdp..Co
  ntent-Length: 215....v=0..o=- 1232659291 1232659291 IN IP4 192.168.30.194..
  s=Polycom IP Phone..c=IN IP4 192.168.30.194..t=0 0..m=audio 2226 RTP/AVP 0
  8 101..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:101 telephone-e
  vent/8000..
#
U 192.168.30.254:5060 -> 192.168.30.197:5060
  NOTIFY sip:6001@192.168.30.197:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK20ee0b08;rport..From: "" <sip:6010@192.1
  68.30.254:5060>;tag=as2c7f23d2..To: "Reception 6001" <sip:6001@192.168.30.2
  54:5060>;tag=948bd7d8bd..Contact: <sip:6010@192.168.30.254>..Call-ID: 3551f
  7a8811d2d36..CSeq: 109 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Event: dialog..Content-Type: application/dialog-info+xml..Subscr
  iption-State: active..Content-Length: 211....<?xml version="1.0"?>.<dialog-
  info xmlns="urn:ietf:params:xml:ns:dialog-info" version="7" state="full" en
  tity="sip:6010@192.168.30.254:5060">.<dialog id="6010">.<state>confirmed</s
  tate>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.30.194:5060;branch=z9hG4bK27ab
  79445DEE6E9;received=192.168.30.194..From: "David Brillert" <sip:6010@192.1
  68.30.254>;tag=6B3155DA-7B50E38F..To: <sip:6002@192.168.30.254;user=phone>.
  .Call-ID: 690f309b-53004960-31d34975@192.168.30.194..CSeq: 2 INVITE..User-A
  gent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, RE
  FER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:6002@192.168.30.
  254>..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  NOTIFY sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK1f5ea222;rport..From: <sip:6010@192.168.30.254>;tag=as
  5765bd59..To: "David Brillert" <sip:6010@192.168.30.254>;tag=24DC35AE-66E66
  CA3..Contact: <sip:6010@192.168.30.254>..Call-ID: df518caf-a850d2b4-a8af940
  9@192.168.30.194..CSeq: 110 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Ma
  x-Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subsc
  ription-State: active..Content-Length: 353....<?xml version="1.0"?>.<!DOCTY
  PE presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<prese
  nce>.<presentity uri="sip:6010@192.168.30.254;method=SUBSCRIBE" />.<atom id
  ="6010">.<address uri="sip:6010@192.168.30.254;user=ip" priority="0.800000"
  >.<status status="inuse" />.<msnsubstatus substatus="onthephone" />.</addre
  ss>.</atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  NOTIFY sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK5b1f05d6;rport..From: <sip:6010@192.168.30.254>;tag=as
  59e4f76c..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=7E992E67-A4378
  33A..Contact: <sip:6010@192.168.30.254>..Call-ID: faaad646-43b9667d-b3d9f3b
  8@192.168.30.190..CSeq: 110 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Ma
  x-Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subsc
  ription-State: active..Content-Length: 353....<?xml version="1.0"?>.<!DOCTY
  PE presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<prese
  nce>.<presentity uri="sip:6002@192.168.30.254;method=SUBSCRIBE" />.<atom id
  ="6010">.<address uri="sip:6010@192.168.30.254;user=ip" priority="0.800000"
  >.<status status="inuse" />.<msnsubstatus substatus="onthephone" />.</addre
  ss>.</atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.162:5060
  NOTIFY sip:6000@192.168.30.162:5060;line=1gwxw48p SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK6114b257;rport..From: <sip:6010@192.168.
  30.254>;tag=as2d9afc54..To: <sip:6000@192.168.30.254>;tag=dy3dunqxmc..Conta
  ct: <sip:6010@192.168.30.254>..Call-ID: 3c26704873a5-hkevxz1g20rn..CSeq: 12
  8 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Event: dia
  log..Content-Type: application/dialog-info+xml..Subscription-State: active.
  .Content-Length: 207....<?xml version="1.0"?>.<dialog-info xmlns="urn:ietf:
  params:xml:ns:dialog-info" version="26" state="full" entity="sip:6010@192.1
  68.30.254">.<dialog id="6010">.<state>confirmed</state>.</dialog>.</dialog-
  info>.
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK5b1f05d6
  ;rport..From: <sip:6010@192.168.30.254>;tag=as59e4f76c..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=7E992E67-A437833A..CSeq: 110 NOTIFY..Call-I
  D: faaad646-43b9667d-b3d9f3b8@192.168.30.190..Contact: <sip:6002@192.168.30
  .190:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.
  1.1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.162:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK6114b257
  ;rport=5060..From: <sip:6010@192.168.30.254>;tag=as2d9afc54..To: <sip:6000@
  192.168.30.254>;tag=dy3dunqxmc..Call-ID: 3c26704873a5-hkevxz1g20rn..CSeq: 1
  28 NOTIFY..Content-Length: 0....
#
U 192.168.30.197:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK20ee0b08
  ;rport=5060;received=192.168.30.254..From: "" <sip:6010@192.168.30.254:5060
  >;tag=as2c7f23d2..To: "Reception 6001" <sip:6001@192.168.30.254:5060>;tag=9
  48bd7d8bd..Call-ID: 3551f7a8811d2d36..CSeq: 109 NOTIFY..Contact: "Reception
   6001" <sip:6001@192.168.30.197:5060;transport=udp>;+sip.instance="<urn:uui
  d:00000000-0000-1000-8000-00085D18F672>"..Server: Aastra 57i/2.4.1.37..Cont
  ent-Length: 0....
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK1f5ea222
  ;rport..From: <sip:6010@192.168.30.254>;tag=as5765bd59..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=24DC35AE-66E66CA3..CSeq: 110 NOTIFY..Call-I
  D: df518caf-a850d2b4-a8af9409@192.168.30.194..Contact: <sip:6010@192.168.30
  .194:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.
  1.1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.197:5060
  NOTIFY sip:6001@192.168.30.197:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK52928170;rport..From: "" <sip:6002@192.1
  68.30.254:5060>;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.2
  54:5060>;tag=798cae11d2..Contact: <sip:6002@192.168.30.254>..Call-ID: 5ccd1
  6b2542c5816..CSeq: 108 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Event: dialog..Content-Type: application/dialog-info+xml..Subscr
  iption-State: active..Content-Length: 229....<?xml version="1.0"?>.<dialog-
  info xmlns="urn:ietf:params:xml:ns:dialog-info" version="6" state="full" en
  tity="sip:6002@192.168.30.254:5060">.<dialog id="6002" direction="recipient
  ">.<state>early</state>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  NOTIFY sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK342dca13;rport..From: <sip:6002@192.168.30.254>;tag=as
  72d74e13..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CFCCE934-88E69
  289..Contact: <sip:6002@192.168.30.254>..Call-ID: aed2cd15-aa9737a-88713b2f
  @192.168.30.194..CSeq: 109 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 353....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6010@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="inuse" />.<msnsubstatus substatus="onthephone" />.</addres
  s>.</atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  NOTIFY sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK56e31211;rport..From: <sip:6002@192.168.30.254>;tag=as
  6d023e2b..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA
  52..Contact: <sip:6002@192.168.30.254>..Call-ID: e6de11de-bf52beb5-1be12a10
  @192.168.30.190..CSeq: 109 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 353....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6002@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="inuse" />.<msnsubstatus substatus="onthephone" />.</addres
  s>.</atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.162:5060
  NOTIFY sip:6000@192.168.30.162:5060;line=1gwxw48p SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK6ef19fd7;rport..From: <sip:6002@192.168.
  30.254>;tag=as10dab66d..To: <sip:6000@192.168.30.254>;tag=gpmqppoqgj..Conta
  ct: <sip:6002@192.168.30.254>..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 12
  7 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Event: dia
  log..Content-Type: application/dialog-info+xml..Subscription-State: active.
  .Content-Length: 225....<?xml version="1.0"?>.<dialog-info xmlns="urn:ietf:
  params:xml:ns:dialog-info" version="25" state="full" entity="sip:6002@192.1
  68.30.254">.<dialog id="6002" direction="recipient">.<state>early</state>.<
  /dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  INVITE sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK4039022e;rport..From: "David Brillert" <sip:6010@192.1
  68.30.254>;tag=as4ea4257a..To: <sip:6002@192.168.30.190:5060>..Contact: <si
  p:6010@192.168.30.254>..Call-ID: 79089f010edd7bc5154887044cab42c7@192.168.3
  0.254..CSeq: 102 INVITE..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards:
   70..Remote-Party-ID: "David Brillert" <sip:6010@192.168.30.254>;privacy=of
  f;screen=no..Date: Thu, 22 Jan 2009 21:21:50 GMT..Allow: INVITE, ACK, CANCE
  L, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Typ
  e: application/sdp..Content-Length: 244....v=0..o=root 30243 30243 IN IP4 1
  92.168.30.254..s=session..c=IN IP4 192.168.30.254..t=0 0..m=audio 11814 RTP
  /AVP 0 101..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..a=fmtp
  :101 0-16..a=silenceSupp:off - - - -..a=ptime:20..a=sendrecv..
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK56e31211
  ;rport..From: <sip:6002@192.168.30.254>;tag=as6d023e2b..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA52..CSeq: 109 NOTIFY..Call-ID
  : e6de11de-bf52beb5-1be12a10@192.168.30.190..Contact: <sip:6002@192.168.30.
  190:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK342dca13
  ;rport..From: <sip:6002@192.168.30.254>;tag=as72d74e13..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CFCCE934-88E69289..CSeq: 109 NOTIFY..Call-I
  D: aed2cd15-aa9737a-88713b2f@192.168.30.194..Contact: <sip:6010@192.168.30.
  194:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK4039
  022e;rport..From: "David Brillert" <sip:6010@192.168.30.254>;tag=as4ea4257a
  ..To: <sip:6002@192.168.30.190:5060>;tag=1F0EA49B-FBB41B1E..CSeq: 102 INVIT
  E..Call-ID: 79089f010edd7bc5154887044cab42c7@192.168.30.254..Contact: <sip:
  6002@192.168.30.190:5060>..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.
  1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.197:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK52928170
  ;rport=5060;received=192.168.30.254..From: "" <sip:6002@192.168.30.254:5060
  >;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.254:5060>;tag=7
  98cae11d2..Call-ID: 5ccd16b2542c5816..CSeq: 108 NOTIFY..Contact: "Reception
   6001" <sip:6001@192.168.30.197:5060;transport=udp>;+sip.instance="<urn:uui
  d:00000000-0000-1000-8000-00085D18F672>"..Server: Aastra 57i/2.4.1.37..Cont
  ent-Length: 0....
#
U 192.168.30.162:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK6ef19fd7
  ;rport=5060..From: <sip:6002@192.168.30.254>;tag=as10dab66d..To: <sip:6000@
  192.168.30.254>;tag=gpmqppoqgj..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 1
  27 NOTIFY..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK403
  9022e;rport..From: "David Brillert" <sip:6010@192.168.30.254>;tag=as4ea4257
  a..To: <sip:6002@192.168.30.190:5060>;tag=1F0EA49B-FBB41B1E..CSeq: 102 INVI
  TE..Call-ID: 79089f010edd7bc5154887044cab42c7@192.168.30.254..Contact: <sip
  :6002@192.168.30.190:5060>..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1
  .1.0137..Allow-Events: talk,hold,conference..Accept-Language: en..Content-L
  ength: 0....
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.30.194:5060;branch=z9hG4bK27a
  b79445DEE6E9;received=192.168.30.194..From: "David Brillert" <sip:6010@192.
  168.30.254>;tag=6B3155DA-7B50E38F..To: <sip:6002@192.168.30.254;user=phone>
  ;tag=as59aeb2a3..Call-ID: 690f309b-53004960-31d34975@192.168.30.194..CSeq:
  2 INVITE..User-Agent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL,
  OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:
  6002@192.168.30.254>..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.195:5065
  OPTIONS sip:6020@192.168.30.195:5065 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.2
  54:5060;branch=z9hG4bK04fd1399;rport..From: "asterisk" <sip:asterisk@192.16
  8.30.254>;tag=as0ea0328c..To: <sip:6020@192.168.30.195:5065>..Contact: <sip
  :asterisk@192.168.30.254>..Call-ID: 77614e7b58d56473018f77fa025d608a@192.16
  8.30.254..CSeq: 102 OPTIONS..User-Agent: Asterisk PBX (Fireworx)..Max-Forwa
  rds: 70..Date: Thu, 22 Jan 2009 21:21:50 GMT..Allow: INVITE, ACK, CANCEL, O
  PTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Length:
   0....
#
U 192.168.30.195:5065 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK04fd1399
  ;rport..To: <sip:6020@192.168.30.195:5065>..From: "asterisk" <sip:asterisk@
  192.168.30.254>;tag=as0ea0328c..Call-Id: 77614e7b58d56473018f77fa025d608a@1
  92.168.30.254..CSeq: 102 OPTIONS..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK4039022e
  ;rport..From: "David Brillert" <sip:6010@192.168.30.254>;tag=as4ea4257a..To
  : <sip:6002@192.168.30.190:5060>;tag=1F0EA49B-FBB41B1E..CSeq: 102 INVITE..C
  all-ID: 79089f010edd7bc5154887044cab42c7@192.168.30.254..Contact: <sip:6002
  @192.168.30.190:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESS
  AGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPoint
  IP-SPIP_650-UA/3.1.1.0137..Accept-Language: en..Content-Type: application/s
  dp..Content-Length: 203....v=0..o=- 1232659295 1232659295 IN IP4 192.168.30
  .190..s=Polycom IP Phone..c=IN IP4 192.168.30.190..t=0 0..m=audio 2258 RTP/
  AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8
  000..
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  ACK sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.254:5
  060;branch=z9hG4bK6b6923ef;rport..From: "David Brillert" <sip:6010@192.168.
  30.254>;tag=as4ea4257a..To: <sip:6002@192.168.30.190:5060>;tag=1F0EA49B-FBB
  41B1E..Contact: <sip:6010@192.168.30.254>..Call-ID: 79089f010edd7bc51548870
  44cab42c7@192.168.30.254..CSeq: 102 ACK..User-Agent: Asterisk PBX (Fireworx
  )..Max-Forwards: 70..Remote-Party-ID: "David Brillert" <sip:6010@192.168.30
  .254>;privacy=off;screen=no..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.197:5060
  NOTIFY sip:6001@192.168.30.197:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK22f84289;rport..From: "" <sip:6002@192.1
  68.30.254:5060>;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.2
  54:5060>;tag=798cae11d2..Contact: <sip:6002@192.168.30.254>..Call-ID: 5ccd1
  6b2542c5816..CSeq: 109 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Event: dialog..Content-Type: application/dialog-info+xml..Subscr
  iption-State: active..Content-Length: 211....<?xml version="1.0"?>.<dialog-
  info xmlns="urn:ietf:params:xml:ns:dialog-info" version="7" state="full" en
  tity="sip:6002@192.168.30.254:5060">.<dialog id="6002">.<state>confirmed</s
  tate>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  NOTIFY sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK2cbc1986;rport..From: <sip:6002@192.168.30.254>;tag=as
  72d74e13..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CFCCE934-88E69
  289..Contact: <sip:6002@192.168.30.254>..Call-ID: aed2cd15-aa9737a-88713b2f
  @192.168.30.194..CSeq: 110 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 353....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6010@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="inuse" />.<msnsubstatus substatus="onthephone" />.</addres
  s>.</atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  NOTIFY sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK6e74cd27;rport..From: <sip:6002@192.168.30.254>;tag=as
  6d023e2b..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA
  52..Contact: <sip:6002@192.168.30.254>..Call-ID: e6de11de-bf52beb5-1be12a10
  @192.168.30.190..CSeq: 110 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 353....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6002@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="inuse" />.<msnsubstatus substatus="onthephone" />.</addres
  s>.</atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.162:5060
  NOTIFY sip:6000@192.168.30.162:5060;line=1gwxw48p SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK41e8e6ec;rport..From: <sip:6002@192.168.
  30.254>;tag=as10dab66d..To: <sip:6000@192.168.30.254>;tag=gpmqppoqgj..Conta
  ct: <sip:6002@192.168.30.254>..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 12
  8 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Event: dia
  log..Content-Type: application/dialog-info+xml..Subscription-State: active.
  .Content-Length: 207....<?xml version="1.0"?>.<dialog-info xmlns="urn:ietf:
  params:xml:ns:dialog-info" version="26" state="full" entity="sip:6002@192.1
  68.30.254">.<dialog id="6002">.<state>confirmed</state>.</dialog>.</dialog-
  info>.
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.194:5060;branch=z9hG4bK27ab7944
  5DEE6E9;received=192.168.30.194..From: "David Brillert" <sip:6010@192.168.3
  0.254>;tag=6B3155DA-7B50E38F..To: <sip:6002@192.168.30.254;user=phone>;tag=
  as59aeb2a3..Call-ID: 690f309b-53004960-31d34975@192.168.30.194..CSeq: 2 INV
  ITE..User-Agent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIO
  NS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:6002@
  192.168.30.254>..Content-Type: application/sdp..Content-Length: 244....v=0.
  .o=root 30243 30243 IN IP4 192.168.30.254..s=session..c=IN IP4 192.168.30.2
  54..t=0 0..m=audio 12678 RTP/AVP 0 101..a=rtpmap:0 PCMU/8000..a=rtpmap:101
  telephone-event/8000..a=fmtp:101 0-16..a=silenceSupp:off - - - -..a=ptime:2
  0..a=sendrecv..
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK6e74cd27
  ;rport..From: <sip:6002@192.168.30.254>;tag=as6d023e2b..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA52..CSeq: 110 NOTIFY..Call-ID
  : e6de11de-bf52beb5-1be12a10@192.168.30.190..Contact: <sip:6002@192.168.30.
  190:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK2cbc1986
  ;rport..From: <sip:6002@192.168.30.254>;tag=as72d74e13..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CFCCE934-88E69289..CSeq: 110 NOTIFY..Call-I
  D: aed2cd15-aa9737a-88713b2f@192.168.30.194..Contact: <sip:6010@192.168.30.
  194:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.197:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK22f84289
  ;rport=5060;received=192.168.30.254..From: "" <sip:6002@192.168.30.254:5060
  >;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.254:5060>;tag=7
  98cae11d2..Call-ID: 5ccd16b2542c5816..CSeq: 109 NOTIFY..Contact: "Reception
   6001" <sip:6001@192.168.30.197:5060;transport=udp>;+sip.instance="<urn:uui
  d:00000000-0000-1000-8000-00085D18F672>"..Server: Aastra 57i/2.4.1.37..Cont
  ent-Length: 0....
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  ACK sip:6002@192.168.30.254 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.194:5060;b
  ranch=z9hG4bK9111ac8DF0C95D..From: "David Brillert" <sip:6010@192.168.30.25
  4>;tag=6B3155DA-7B50E38F..To: <sip:6002@192.168.30.254;user=phone>;tag=as59
  aeb2a3..CSeq: 2 ACK..Call-ID: 690f309b-53004960-31d34975@192.168.30.194..Co
  ntact: <sip:6010@192.168.30.194:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPT
  IONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: P
  olycomSoundPointIP-SPIP_550-UA/3.1.1.0137..Accept-Language: en..Max-Forward
  s: 70..Content-Length: 0....
#
U 192.168.30.162:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK41e8e6ec
  ;rport=5060..From: <sip:6002@192.168.30.254>;tag=as10dab66d..To: <sip:6000@
  192.168.30.254>;tag=gpmqppoqgj..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 1
  28 NOTIFY..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.197:5060
  NOTIFY sip:6001@192.168.30.197:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK408556b6;rport..From: "" <sip:7001@192.1
  68.30.254:5060>;tag=as147c6b54..To: "Reception 6001" <sip:6001@192.168.30.2
  54:5060>;tag=1719ee11e2..Contact: <sip:7001@192.168.30.254>..Call-ID: b8806
  f45d9c2531c..CSeq: 103 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Event: dialog..Content-Type: application/dialog-info+xml..Subscr
  iption-State: active..Content-Length: 211....<?xml version="1.0"?>.<dialog-
  info xmlns="urn:ietf:params:xml:ns:dialog-info" version="1" state="full" en
  tity="sip:7001@192.168.30.254:5060">.<dialog id="7001">.<state>confirmed</s
  tate>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  NOTIFY sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK6f8031a5;rport..From: <sip:7001@192.168.30.254>;tag=as
  6ec0d83e..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=83094BE2-C50A5
  529..Contact: <sip:7001@192.168.30.254>..Call-ID: 84202b05-4c72bf20-a423a12
  f@192.168.30.190..CSeq: 104 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Ma
  x-Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subsc
  ription-State: active..Content-Length: 353....<?xml version="1.0"?>.<!DOCTY
  PE presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<prese
  nce>.<presentity uri="sip:6002@192.168.30.254;method=SUBSCRIBE" />.<atom id
  ="7001">.<address uri="sip:7001@192.168.30.254;user=ip" priority="0.800000"
  >.<status status="inuse" />.<msnsubstatus substatus="onthephone" />.</addre
  ss>.</atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.200:5060
  NOTIFY sip:6012@192.168.30.200:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK0de24d5e;rport..From: sip:7001@192.168.3
  0.254:5060;tag=as631b3f87..To: 6012 <sip:6012@192.168.30.254:5060>;tag=ca88
  9ebf9638d88..Contact: <sip:7001@192.168.30.254>..Call-ID: 82e02662be43b96c1
  edd3068fd95f15b@192.168.30.200..CSeq: 103 NOTIFY..User-Agent: Asterisk PBX
  (Fireworx)..Max-Forwards: 70..Event: dialog..Content-Type: application/dial
  og-info+xml..Subscription-State: active..Content-Length: 211....<?xml versi
  on="1.0"?>.<dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version=
  "1" state="full" entity="sip:7001@192.168.30.254:5060">.<dialog id="7001">.
  <state>confirmed</state>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.162:5060
  NOTIFY sip:6000@192.168.30.162:5060;line=1gwxw48p SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK40539fb0;rport..From: <sip:7001@192.168.
  30.254>;tag=as6b264564..To: <sip:6000@192.168.30.254>;tag=gcjdwj9dxt..Conta
  ct: <sip:7001@192.168.30.254>..Call-ID: 3c2670486b7f-cj64z04gkty0..CSeq: 12
  1 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Event: dia
  log..Content-Type: application/dialog-info+xml..Subscription-State: active.
  .Content-Length: 207....<?xml version="1.0"?>.<dialog-info xmlns="urn:ietf:
  params:xml:ns:dialog-info" version="19" state="full" entity="sip:7001@192.1
  68.30.254">.<dialog id="7001">.<state>confirmed</state>.</dialog>.</dialog-
  info>.
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK6f8031a5
  ;rport..From: <sip:7001@192.168.30.254>;tag=as6ec0d83e..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=83094BE2-C50A5529..CSeq: 104 NOTIFY..Call-I
  D: 84202b05-4c72bf20-a423a12f@192.168.30.190..Contact: <sip:6002@192.168.30
  .190:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.
  1.1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.162:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK40539fb0
  ;rport=5060..From: <sip:7001@192.168.30.254>;tag=as6b264564..To: <sip:6000@
  192.168.30.254>;tag=gcjdwj9dxt..Call-ID: 3c2670486b7f-cj64z04gkty0..CSeq: 1
  21 NOTIFY..Content-Length: 0....
#
U 192.168.30.197:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK408556b6
  ;rport=5060;received=192.168.30.254..From: "" <sip:7001@192.168.30.254:5060
  >;tag=as147c6b54..To: "Reception 6001" <sip:6001@192.168.30.254:5060>;tag=1
  719ee11e2..Call-ID: b8806f45d9c2531c..CSeq: 103 NOTIFY..Contact: "Reception
   6001" <sip:6001@192.168.30.197:5060;transport=udp>;+sip.instance="<urn:uui
  d:00000000-0000-1000-8000-00085D18F672>"..Server: Aastra 57i/2.4.1.37..Cont
  ent-Length: 0....
#
U 192.168.30.200:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Call-ID: 82e02662be43b96c1edd3068fd95f15b@192.168.30.200..C
  Seq: 103 NOTIFY..From: sip:7001@192.168.30.254:5060;tag=as631b3f87..To: 601
  2 <sip:6012@192.168.30.254:5060>;tag=ca889ebf9638d88..Via: SIP/2.0/UDP 192.
  168.30.254:5060;branch=z9hG4bK0de24d5e;rport..Content-Length: 0..Contact: 6
  012 <sip:6012@192.168.30.200:5060;transport=udp>..Supported: replaces..User
  -Agent: Aastra 9133i/1.4.3.23 Brcm Callctrl/1.5.1.0 MxSF/v3.2.8.45....
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  BYE sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.254:5
  060;branch=z9hG4bK43d88fa3;rport..From: "David Brillert" <sip:6010@192.168.
  30.254>;tag=as4ea4257a..To: <sip:6002@192.168.30.190:5060>;tag=1F0EA49B-FBB
  41B1E..Call-ID: 79089f010edd7bc5154887044cab42c7@192.168.30.254..CSeq: 103
  BYE..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Remote-Party-ID
  : "David Brillert" <sip:6010@192.168.30.254>;privacy=off;screen=no..Content
  -Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.197:5060
  NOTIFY sip:6001@192.168.30.197:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK1eb954a5;rport..From: "" <sip:6002@192.1
  68.30.254:5060>;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.2
  54:5060>;tag=798cae11d2..Contact: <sip:6002@192.168.30.254>..Call-ID: 5ccd1
  6b2542c5816..CSeq: 110 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Event: dialog..Content-Type: application/dialog-info+xml..Subscr
  iption-State: active..Content-Length: 212....<?xml version="1.0"?>.<dialog-
  info xmlns="urn:ietf:params:xml:ns:dialog-info" version="8" state="full" en
  tity="sip:6002@192.168.30.254:5060">.<dialog id="6002">.<state>terminated</
  state>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  NOTIFY sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK1271ede4;rport..From: <sip:6002@192.168.30.254>;tag=as
  72d74e13..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CFCCE934-88E69
  289..Contact: <sip:6002@192.168.30.254>..Call-ID: aed2cd15-aa9737a-88713b2f
  @192.168.30.194..CSeq: 111 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 348....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6010@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="open" />.<msnsubstatus substatus="online" />.</address>.</
  atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  NOTIFY sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK01c5f9db;rport..From: <sip:6002@192.168.30.254>;tag=as
  6d023e2b..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA
  52..Contact: <sip:6002@192.168.30.254>..Call-ID: e6de11de-bf52beb5-1be12a10
  @192.168.30.190..CSeq: 111 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 348....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6002@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="open" />.<msnsubstatus substatus="online" />.</address>.</
  atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.162:5060
  NOTIFY sip:6000@192.168.30.162:5060;line=1gwxw48p SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK3e340b06;rport..From: <sip:6002@192.168.
  30.254>;tag=as10dab66d..To: <sip:6000@192.168.30.254>;tag=gpmqppoqgj..Conta
  ct: <sip:6002@192.168.30.254>..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 12
  9 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Event: dia
  log..Content-Type: application/dialog-info+xml..Subscription-State: active.
  .Content-Length: 208....<?xml version="1.0"?>.<dialog-info xmlns="urn:ietf:
  params:xml:ns:dialog-info" version="27" state="full" entity="sip:6002@192.1
  68.30.254">.<dialog id="6002">.<state>terminated</state>.</dialog>.</dialog
  -info>.
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK43d88fa3
  ;rport..From: "David Brillert" <sip:6010@192.168.30.254>;tag=as4ea4257a..To
  : <sip:6002@192.168.30.190:5060>;tag=1F0EA49B-FBB41B1E..CSeq: 103 BYE..Call
  -ID: 79089f010edd7bc5154887044cab42c7@192.168.30.254..Contact: <sip:6002@19
  2.168.30.190:5060>..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137.
  .Accept-Language: en..Content-Length: 0....
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK1271ede4
  ;rport..From: <sip:6002@192.168.30.254>;tag=as72d74e13..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CFCCE934-88E69289..CSeq: 111 NOTIFY..Call-I
  D: aed2cd15-aa9737a-88713b2f@192.168.30.194..Contact: <sip:6010@192.168.30.
  194:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK01c5f9db
  ;rport..From: <sip:6002@192.168.30.254>;tag=as6d023e2b..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA52..CSeq: 111 NOTIFY..Call-ID
  : e6de11de-bf52beb5-1be12a10@192.168.30.190..Contact: <sip:6002@192.168.30.
  190:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.162:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK3e340b06
  ;rport=5060..From: <sip:6002@192.168.30.254>;tag=as10dab66d..To: <sip:6000@
  192.168.30.254>;tag=gpmqppoqgj..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 1
  29 NOTIFY..Content-Length: 0....
#
U 192.168.30.197:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK1eb954a5
  ;rport=5060;received=192.168.30.254..From: "" <sip:6002@192.168.30.254:5060
  >;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.254:5060>;tag=7
  98cae11d2..Call-ID: 5ccd16b2542c5816..CSeq: 110 NOTIFY..Contact: "Reception
   6001" <sip:6001@192.168.30.197:5060;transport=udp>;+sip.instance="<urn:uui
  d:00000000-0000-1000-8000-00085D18F672>"..Server: Aastra 57i/2.4.1.37..Cont
  ent-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  INVITE sip:7001@192.168.30.254:5060;user=phone SIP/2.0..Via: SIP/2.0/UDP 19
  2.168.30.190:5060;branch=z9hG4bK595e0d50BD39AC9F..From: "Reception 6002" <s
  ip:6002@192.168.30.254>;tag=6422AFE3-39B4AA46..To: <sip:7001@192.168.30.254
  ;user=phone>..CSeq: 1 INVITE..Call-ID: 4f340792-e8bd4819-21541e64@192.168.3
  0.190..Contact: <sip:6002@192.168.30.190:5060>..Allow: INVITE, ACK, BYE, CA
  NCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User
  -Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137..Accept-Language: en..Su
  pported: 100rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards:
   70..Content-Type: application/sdp..Content-Length: 215....v=0..o=- 1232659
  304 1232659304 IN IP4 192.168.30.190..s=Polycom IP Phone..c=IN IP4 192.168.
  30.190..t=0 0..m=audio 2260 RTP/AVP 0 8 101..a=rtpmap:0 PCMU/8000..a=rtpmap
  :8 PCMA/8000..a=rtpmap:101 telephone-event/8000..
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  SIP/2.0 407 Proxy Authentication Required..Via: SIP/2.0/UDP 192.168.30.190:
  5060;branch=z9hG4bK595e0d50BD39AC9F;received=192.168.30.190..From: "Recepti
  on 6002" <sip:6002@192.168.30.254>;tag=6422AFE3-39B4AA46..To: <sip:7001@192
  .168.30.254;user=phone>;tag=as412a31c0..Call-ID: 4f340792-e8bd4819-21541e64
  @192.168.30.190..CSeq: 1 INVITE..User-Agent: Asterisk PBX (Fireworx)..Allow
  : INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: r
  eplaces..Proxy-Authenticate: Digest algorithm=MD5, realm="fireworx", nonce=
  "200c7490"..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  ACK sip:7001@192.168.30.254:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.190:5
  060;branch=z9hG4bK595e0d50BD39AC9F..From: "Reception 6002" <sip:6002@192.16
  8.30.254>;tag=6422AFE3-39B4AA46..To: <sip:7001@192.168.30.254;user=phone>;t
  ag=as412a31c0..CSeq: 1 ACK..Call-ID: 4f340792-e8bd4819-21541e64@192.168.30.
  190..Contact: <sip:6002@192.168.30.190:5060>..Allow: INVITE, ACK, BYE, CANC
  EL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137..Accept-Language: en..Max-
  Forwards: 70..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  INVITE sip:7001@192.168.30.254:5060;user=phone SIP/2.0..Via: SIP/2.0/UDP 19
  2.168.30.190:5060;branch=z9hG4bKe9aa6a7d92B67B8..From: "Reception 6002" <si
  p:6002@192.168.30.254>;tag=6422AFE3-39B4AA46..To: <sip:7001@192.168.30.254;
  user=phone>..CSeq: 2 INVITE..Call-ID: 4f340792-e8bd4819-21541e64@192.168.30
  .190..Contact: <sip:6002@192.168.30.190:5060>..Allow: INVITE, ACK, BYE, CAN
  CEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-
  Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137..Accept-Language: en..Sup
  ported: 100rel,replaces..Allow-Events: talk,hold,conference..Proxy-Authoriz
  ation: Digest username="6002", realm="fireworx", nonce="200c7490", uri="sip
  :7001@192.168.30.254:5060;user=phone", response="6443f2492b74d3c6716434591f
  00b19f", algorithm=MD5..Max-Forwards: 70..Content-Type: application/sdp..Co
  ntent-Length: 215....v=0..o=- 1232659304 1232659304 IN IP4 192.168.30.190..
  s=Polycom IP Phone..c=IN IP4 192.168.30.190..t=0 0..m=audio 2260 RTP/AVP 0
  8 101..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:101 telephone-e
  vent/8000..
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.30.190:5060;branch=z9hG4bKe9aa
  6a7d92B67B8;received=192.168.30.190..From: "Reception 6002" <sip:6002@192.1
  68.30.254>;tag=6422AFE3-39B4AA46..To: <sip:7001@192.168.30.254;user=phone>.
  .Call-ID: 4f340792-e8bd4819-21541e64@192.168.30.190..CSeq: 2 INVITE..User-A
  gent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, RE
  FER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:7001@192.168.30.
  254>..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.197:5060
  NOTIFY sip:6001@192.168.30.197:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK3334ef44;rport..From: "" <sip:6002@192.1
  68.30.254:5060>;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.2
  54:5060>;tag=798cae11d2..Contact: <sip:6002@192.168.30.254>..Call-ID: 5ccd1
  6b2542c5816..CSeq: 111 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Event: dialog..Content-Type: application/dialog-info+xml..Subscr
  iption-State: active..Content-Length: 211....<?xml version="1.0"?>.<dialog-
  info xmlns="urn:ietf:params:xml:ns:dialog-info" version="9" state="full" en
  tity="sip:6002@192.168.30.254:5060">.<dialog id="6002">.<state>confirmed</s
  tate>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  NOTIFY sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK6347b93c;rport..From: <sip:6002@192.168.30.254>;tag=as
  72d74e13..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CFCCE934-88E69
  289..Contact: <sip:6002@192.168.30.254>..Call-ID: aed2cd15-aa9737a-88713b2f
  @192.168.30.194..CSeq: 112 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 353....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6010@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="inuse" />.<msnsubstatus substatus="onthephone" />.</addres
  s>.</atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  NOTIFY sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK4400ca5e;rport..From: <sip:6002@192.168.30.254>;tag=as
  6d023e2b..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA
  52..Contact: <sip:6002@192.168.30.254>..Call-ID: e6de11de-bf52beb5-1be12a10
  @192.168.30.190..CSeq: 112 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 353....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6002@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="inuse" />.<msnsubstatus substatus="onthephone" />.</addres
  s>.</atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.162:5060
  NOTIFY sip:6000@192.168.30.162:5060;line=1gwxw48p SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK3d015144;rport..From: <sip:6002@192.168.
  30.254>;tag=as10dab66d..To: <sip:6000@192.168.30.254>;tag=gpmqppoqgj..Conta
  ct: <sip:6002@192.168.30.254>..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 13
  0 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Event: dia
  log..Content-Type: application/dialog-info+xml..Subscription-State: active.
  .Content-Length: 207....<?xml version="1.0"?>.<dialog-info xmlns="urn:ietf:
  params:xml:ns:dialog-info" version="28" state="full" entity="sip:6002@192.1
  68.30.254">.<dialog id="6002">.<state>confirmed</state>.</dialog>.</dialog-
  info>.
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK6347b93c
  ;rport..From: <sip:6002@192.168.30.254>;tag=as72d74e13..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CFCCE934-88E69289..CSeq: 112 NOTIFY..Call-I
  D: aed2cd15-aa9737a-88713b2f@192.168.30.194..Contact: <sip:6010@192.168.30.
  194:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.190:5060;branch=z9hG4bKe9aa6a7d
  92B67B8;received=192.168.30.190..From: "Reception 6002" <sip:6002@192.168.3
  0.254>;tag=6422AFE3-39B4AA46..To: <sip:7001@192.168.30.254;user=phone>;tag=
  as5d7b011e..Call-ID: 4f340792-e8bd4819-21541e64@192.168.30.190..CSeq: 2 INV
  ITE..User-Agent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIO
  NS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:7001@
  192.168.30.254>..Content-Type: application/sdp..Content-Length: 244....v=0.
  .o=root 30243 30243 IN IP4 192.168.30.254..s=session..c=IN IP4 192.168.30.2
  54..t=0 0..m=audio 10906 RTP/AVP 0 101..a=rtpmap:0 PCMU/8000..a=rtpmap:101
  telephone-event/8000..a=fmtp:101 0-16..a=silenceSupp:off - - - -..a=ptime:2
  0..a=sendrecv..
#
U 192.168.30.254:5060 -> 192.168.30.197:5060
  NOTIFY sip:6001@192.168.30.197:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK41e593b4;rport..From: "" <sip:7001@192.1
  68.30.254:5060>;tag=as147c6b54..To: "Reception 6001" <sip:6001@192.168.30.2
  54:5060>;tag=1719ee11e2..Contact: <sip:7001@192.168.30.254>..Call-ID: b8806
  f45d9c2531c..CSeq: 104 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Event: dialog..Content-Type: application/dialog-info+xml..Subscr
  iption-State: active..Content-Length: 212....<?xml version="1.0"?>.<dialog-
  info xmlns="urn:ietf:params:xml:ns:dialog-info" version="2" state="full" en
  tity="sip:7001@192.168.30.254:5060">.<dialog id="7001">.<state>terminated</
  state>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  NOTIFY sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK229b87b2;rport..From: <sip:7001@192.168.30.254>;tag=as
  6ec0d83e..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=83094BE2-C50A5
  529..Contact: <sip:7001@192.168.30.254>..Call-ID: 84202b05-4c72bf20-a423a12
  f@192.168.30.190..CSeq: 105 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Ma
  x-Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subsc
  ription-State: active..Content-Length: 348....<?xml version="1.0"?>.<!DOCTY
  PE presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<prese
  nce>.<presentity uri="sip:6002@192.168.30.254;method=SUBSCRIBE" />.<atom id
  ="7001">.<address uri="sip:7001@192.168.30.254;user=ip" priority="0.800000"
  >.<status status="open" />.<msnsubstatus substatus="online" />.</address>.<
  /atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.200:5060
  NOTIFY sip:6012@192.168.30.200:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK5659a5fd;rport..From: sip:7001@192.168.3
  0.254:5060;tag=as631b3f87..To: 6012 <sip:6012@192.168.30.254:5060>;tag=ca88
  9ebf9638d88..Contact: <sip:7001@192.168.30.254>..Call-ID: 82e02662be43b96c1
  edd3068fd95f15b@192.168.30.200..CSeq: 104 NOTIFY..User-Agent: Asterisk PBX
  (Fireworx)..Max-Forwards: 70..Event: dialog..Content-Type: application/dial
  og-info+xml..Subscription-State: active..Content-Length: 212....<?xml versi
  on="1.0"?>.<dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version=
  "2" state="full" entity="sip:7001@192.168.30.254:5060">.<dialog id="7001">.
  <state>terminated</state>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.162:5060
  NOTIFY sip:6000@192.168.30.162:5060;line=1gwxw48p SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK228e5c85;rport..From: <sip:7001@192.168.
  30.254>;tag=as6b264564..To: <sip:6000@192.168.30.254>;tag=gcjdwj9dxt..Conta
  ct: <sip:7001@192.168.30.254>..Call-ID: 3c2670486b7f-cj64z04gkty0..CSeq: 12
  2 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Event: dia
  log..Content-Type: application/dialog-info+xml..Subscription-State: active.
  .Content-Length: 208....<?xml version="1.0"?>.<dialog-info xmlns="urn:ietf:
  params:xml:ns:dialog-info" version="20" state="full" entity="sip:7001@192.1
  68.30.254">.<dialog id="7001">.<state>terminated</state>.</dialog>.</dialog
  -info>.
#
U 192.168.30.162:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK3d015144
  ;rport=5060..From: <sip:6002@192.168.30.254>;tag=as10dab66d..To: <sip:6000@
  192.168.30.254>;tag=gpmqppoqgj..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 1
  30 NOTIFY..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK4400ca5e
  ;rport..From: <sip:6002@192.168.30.254>;tag=as6d023e2b..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA52..CSeq: 112 NOTIFY..Call-ID
  : e6de11de-bf52beb5-1be12a10@192.168.30.190..Contact: <sip:6002@192.168.30.
  190:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.197:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK3334ef44
  ;rport=5060;received=192.168.30.254..From: "" <sip:6002@192.168.30.254:5060
  >;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.254:5060>;tag=7
  98cae11d2..Call-ID: 5ccd16b2542c5816..CSeq: 111 NOTIFY..Contact: "Reception
   6001" <sip:6001@192.168.30.197:5060;transport=udp>;+sip.instance="<urn:uui
  d:00000000-0000-1000-8000-00085D18F672>"..Server: Aastra 57i/2.4.1.37..Cont
  ent-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  ACK sip:7001@192.168.30.254 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.190:5060;b
  ranch=z9hG4bK19ca3621ABE91D4C..From: "Reception 6002" <sip:6002@192.168.30.
  254>;tag=6422AFE3-39B4AA46..To: <sip:7001@192.168.30.254;user=phone>;tag=as
  5d7b011e..CSeq: 2 ACK..Call-ID: 4f340792-e8bd4819-21541e64@192.168.30.190..
  Contact: <sip:6002@192.168.30.190:5060>..Allow: INVITE, ACK, BYE, CANCEL, O
  PTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent:
   PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137..Accept-Language: en..Max-Forwa
  rds: 70..Content-Length: 0....
#
U 192.168.30.200:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Call-ID: 82e02662be43b96c1edd3068fd95f15b@192.168.30.200..C
  Seq: 104 NOTIFY..From: sip:7001@192.168.30.254:5060;tag=as631b3f87..To: 601
  2 <sip:6012@192.168.30.254:5060>;tag=ca889ebf9638d88..Via: SIP/2.0/UDP 192.
  168.30.254:5060;branch=z9hG4bK5659a5fd;rport..Content-Length: 0..Contact: 6
  012 <sip:6012@192.168.30.200:5060;transport=udp>..Supported: replaces..User
  -Agent: Aastra 9133i/1.4.3.23 Brcm Callctrl/1.5.1.0 MxSF/v3.2.8.45....
#
U 192.168.30.162:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK228e5c85
  ;rport=5060..From: <sip:7001@192.168.30.254>;tag=as6b264564..To: <sip:6000@
  192.168.30.254>;tag=gcjdwj9dxt..Call-ID: 3c2670486b7f-cj64z04gkty0..CSeq: 1
  22 NOTIFY..Content-Length: 0....
#
U 192.168.30.197:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK41e593b4
  ;rport=5060;received=192.168.30.254..From: "" <sip:7001@192.168.30.254:5060
  >;tag=as147c6b54..To: "Reception 6001" <sip:6001@192.168.30.254:5060>;tag=1
  719ee11e2..Call-ID: b8806f45d9c2531c..CSeq: 104 NOTIFY..Contact: "Reception
   6001" <sip:6001@192.168.30.197:5060;transport=udp>;+sip.instance="<urn:uui
  d:00000000-0000-1000-8000-00085D18F672>"..Server: Aastra 57i/2.4.1.37..Cont
  ent-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK229b87b2
  ;rport..From: <sip:7001@192.168.30.254>;tag=as6ec0d83e..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=83094BE2-C50A5529..CSeq: 105 NOTIFY..Call-I
  D: 84202b05-4c72bf20-a423a12f@192.168.30.190..Contact: <sip:6002@192.168.30
  .190:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.
  1.1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.2.254:5060
  OPTIONS sip:allworx@192.168.2.254:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30
  .254:5060;branch=z9hG4bK438ad1d7;rport..From: "asterisk" <sip:asterisk@192.
  168.30.254>;tag=as231d32ee..To: <sip:allworx@192.168.2.254:5060>..Contact:
  <sip:asterisk@192.168.30.254>..Call-ID: 7ce656d44c2e3961086cd232046511d9@19
  2.168.30.254..CSeq: 102 OPTIONS..User-Agent: Asterisk PBX (Fireworx)..Max-F
  orwards: 70..Date: Thu, 22 Jan 2009 21:22:07 GMT..Allow: INVITE, ACK, CANCE
  L, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Len
  gth: 0....
#
U 192.168.2.254:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK438ad1d7
  ;received=192.168.30.254;rport=5060..To: <sip:allworx@192.168.2.254:5060>..
  From: "asterisk" <sip:asterisk@192.168.30.254>;tag=as231d32ee..CSeq: 102 OP
  TIONS..Call-ID: 7ce656d44c2e3961086cd232046511d9@192.168.30.254..Date: Thu,
   22 Jan 2009 21:23:29 GMT..Contact: <sip:192.168.2.254:5060>..Server: IST-O
  IS-6.9.5.11..Allow: INVITE,ACK,CANCEL,BYE,OPTIONS,REFER,NOTIFY..Supported:
  100rel..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  BYE sip:7001@192.168.30.254 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.190:5060;b
  ranch=z9hG4bK1fc68f8829E2A4F7..From: "Reception 6002" <sip:6002@192.168.30.
  254>;tag=6422AFE3-39B4AA46..To: <sip:7001@192.168.30.254;user=phone>;tag=as
  5d7b011e..CSeq: 3 BYE..Call-ID: 4f340792-e8bd4819-21541e64@192.168.30.190..
  Contact: <sip:6002@192.168.30.190:5060>..User-Agent: PolycomSoundPointIP-SP
  IP_650-UA/3.1.1.0137..Accept-Language: en..Proxy-Authorization: Digest user
  name="6002", realm="fireworx", nonce="200c7490", uri="sip:7001@192.168.30.2
  54:5060;user=phone", response="b9b42dbc39a8d885f4fd4e505591e04c", algorithm
  =MD5..Max-Forwards: 70..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.190:5060;branch=z9hG4bK1fc68f88
  29E2A4F7;received=192.168.30.190..From: "Reception 6002" <sip:6002@192.168.
  30.254>;tag=6422AFE3-39B4AA46..To: <sip:7001@192.168.30.254;user=phone>;tag
  =as5d7b011e..Call-ID: 4f340792-e8bd4819-21541e64@192.168.30.190..CSeq: 3 BY
  E..User-Agent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS
  , BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:7001@19
  2.168.30.254>..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  BYE sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.254:5
  060;branch=z9hG4bK2b8ad679;rport..From: <sip:6002@192.168.30.254;user=phone
  >;tag=as59aeb2a3..To: "David Brillert" <sip:6010@192.168.30.254>;tag=6B3155
  DA-7B50E38F..Call-ID: 690f309b-53004960-31d34975@192.168.30.194..CSeq: 102
  BYE..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Content-Length:
   0....
#
U 192.168.30.254:5060 -> 192.168.30.197:5060
  NOTIFY sip:6001@192.168.30.197:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK734acfaa;rport..From: "" <sip:6010@192.1
  68.30.254:5060>;tag=as2c7f23d2..To: "Reception 6001" <sip:6001@192.168.30.2
  54:5060>;tag=948bd7d8bd..Contact: <sip:6010@192.168.30.254>..Call-ID: 3551f
  7a8811d2d36..CSeq: 110 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Event: dialog..Content-Type: application/dialog-info+xml..Subscr
  iption-State: active..Content-Length: 212....<?xml version="1.0"?>.<dialog-
  info xmlns="urn:ietf:params:xml:ns:dialog-info" version="8" state="full" en
  tity="sip:6010@192.168.30.254:5060">.<dialog id="6010">.<state>terminated</
  state>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  NOTIFY sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK5b512ab9;rport..From: <sip:6010@192.168.30.254>;tag=as
  5765bd59..To: "David Brillert" <sip:6010@192.168.30.254>;tag=24DC35AE-66E66
  CA3..Contact: <sip:6010@192.168.30.254>..Call-ID: df518caf-a850d2b4-a8af940
  9@192.168.30.194..CSeq: 111 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Ma
  x-Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subsc
  ription-State: active..Content-Length: 348....<?xml version="1.0"?>.<!DOCTY
  PE presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<prese
  nce>.<presentity uri="sip:6010@192.168.30.254;method=SUBSCRIBE" />.<atom id
  ="6010">.<address uri="sip:6010@192.168.30.254;user=ip" priority="0.800000"
  >.<status status="open" />.<msnsubstatus substatus="online" />.</address>.<
  /atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  NOTIFY sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK07be59e6;rport..From: <sip:6010@192.168.30.254>;tag=as
  59e4f76c..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=7E992E67-A4378
  33A..Contact: <sip:6010@192.168.30.254>..Call-ID: faaad646-43b9667d-b3d9f3b
  8@192.168.30.190..CSeq: 111 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Ma
  x-Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subsc
  ription-State: active..Content-Length: 348....<?xml version="1.0"?>.<!DOCTY
  PE presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<prese
  nce>.<presentity uri="sip:6002@192.168.30.254;method=SUBSCRIBE" />.<atom id
  ="6010">.<address uri="sip:6010@192.168.30.254;user=ip" priority="0.800000"
  >.<status status="open" />.<msnsubstatus substatus="online" />.</address>.<
  /atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.162:5060
  NOTIFY sip:6000@192.168.30.162:5060;line=1gwxw48p SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK742d8931;rport..From: <sip:6010@192.168.
  30.254>;tag=as2d9afc54..To: <sip:6000@192.168.30.254>;tag=dy3dunqxmc..Conta
  ct: <sip:6010@192.168.30.254>..Call-ID: 3c26704873a5-hkevxz1g20rn..CSeq: 12
  9 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Event: dia
  log..Content-Type: application/dialog-info+xml..Subscription-State: active.
  .Content-Length: 208....<?xml version="1.0"?>.<dialog-info xmlns="urn:ietf:
  params:xml:ns:dialog-info" version="27" state="full" entity="sip:6010@192.1
  68.30.254">.<dialog id="6010">.<state>terminated</state>.</dialog>.</dialog
  -info>.
#
U 192.168.30.254:5060 -> 192.168.30.197:5060
  NOTIFY sip:6001@192.168.30.197:5060;transport=udp SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK77665be5;rport..From: "" <sip:6002@192.1
  68.30.254:5060>;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.2
  54:5060>;tag=798cae11d2..Contact: <sip:6002@192.168.30.254>..Call-ID: 5ccd1
  6b2542c5816..CSeq: 112 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Event: dialog..Content-Type: application/dialog-info+xml..Subscr
  iption-State: active..Content-Length: 213....<?xml version="1.0"?>.<dialog-
  info xmlns="urn:ietf:params:xml:ns:dialog-info" version="10" state="full" e
  ntity="sip:6002@192.168.30.254:5060">.<dialog id="6002">.<state>terminated<
  /state>.</dialog>.</dialog-info>.
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  NOTIFY sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK5e119718;rport..From: <sip:6002@192.168.30.254>;tag=as
  72d74e13..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CFCCE934-88E69
  289..Contact: <sip:6002@192.168.30.254>..Call-ID: aed2cd15-aa9737a-88713b2f
  @192.168.30.194..CSeq: 113 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 348....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6010@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="open" />.<msnsubstatus substatus="online" />.</address>.</
  atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  NOTIFY sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK4fb20cd8;rport..From: <sip:6002@192.168.30.254>;tag=as
  6d023e2b..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA
  52..Contact: <sip:6002@192.168.30.254>..Call-ID: e6de11de-bf52beb5-1be12a10
  @192.168.30.190..CSeq: 113 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 348....<?xml version="1.0"?>.<!DOCTYP
  E presence PUBLIC "-//IETF//DTD RFCxxxx XPIDF 1.0//EN" "xpidf.dtd">.<presen
  ce>.<presentity uri="sip:6002@192.168.30.254;method=SUBSCRIBE" />.<atom id=
  "6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000">
  .<status status="open" />.<msnsubstatus substatus="online" />.</address>.</
  atom>.</presence>.
#
U 192.168.30.254:5060 -> 192.168.30.162:5060
  NOTIFY sip:6000@192.168.30.162:5060;line=1gwxw48p SIP/2.0..Via: SIP/2.0/UDP
   192.168.30.254:5060;branch=z9hG4bK60ec82c5;rport..From: <sip:6002@192.168.
  30.254>;tag=as10dab66d..To: <sip:6000@192.168.30.254>;tag=gpmqppoqgj..Conta
  ct: <sip:6002@192.168.30.254>..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 13
  1 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Event: dia
  log..Content-Type: application/dialog-info+xml..Subscription-State: active.
  .Content-Length: 208....<?xml version="1.0"?>.<dialog-info xmlns="urn:ietf:
  params:xml:ns:dialog-info" version="29" state="full" entity="sip:6002@192.1
  68.30.254">.<dialog id="6002">.<state>terminated</state>.</dialog>.</dialog
  -info>.
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK2b8ad679
  ;rport..From: <sip:6002@192.168.30.254;user=phone>;tag=as59aeb2a3..To: "Dav
  id Brillert" <sip:6010@192.168.30.254>;tag=6B3155DA-7B50E38F..CSeq: 102 BYE
  ..Call-ID: 690f309b-53004960-31d34975@192.168.30.194..Contact: <sip:6010@19
  2.168.30.194:5060>..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.1.1.0137.
  .Accept-Language: en..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK07be59e6
  ;rport..From: <sip:6010@192.168.30.254>;tag=as59e4f76c..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=7E992E67-A437833A..CSeq: 111 NOTIFY..Call-I
  D: faaad646-43b9667d-b3d9f3b8@192.168.30.190..Contact: <sip:6002@192.168.30
  .190:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.
  1.1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.162:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK742d8931
  ;rport=5060..From: <sip:6010@192.168.30.254>;tag=as2d9afc54..To: <sip:6000@
  192.168.30.254>;tag=dy3dunqxmc..Call-ID: 3c26704873a5-hkevxz1g20rn..CSeq: 1
  29 NOTIFY..Content-Length: 0....
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK5b512ab9
  ;rport..From: <sip:6010@192.168.30.254>;tag=as5765bd59..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=24DC35AE-66E66CA3..CSeq: 111 NOTIFY..Call-I
  D: df518caf-a850d2b4-a8af9409@192.168.30.194..Contact: <sip:6010@192.168.30
  .194:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.
  1.1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK4fb20cd8
  ;rport..From: <sip:6002@192.168.30.254>;tag=as6d023e2b..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=FDB0AE5F-630FA52..CSeq: 113 NOTIFY..Call-ID
  : e6de11de-bf52beb5-1be12a10@192.168.30.190..Contact: <sip:6002@192.168.30.
  190:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK5e119718
  ;rport..From: <sip:6002@192.168.30.254>;tag=as72d74e13..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CFCCE934-88E69289..CSeq: 113 NOTIFY..Call-I
  D: aed2cd15-aa9737a-88713b2f@192.168.30.194..Contact: <sip:6010@192.168.30.
  194:5060>..Event: presence..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.162:5060 -> 192.168.30.254:5060
  SIP/2.0 200 Ok..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK60ec82c5
  ;rport=5060..From: <sip:6002@192.168.30.254>;tag=as10dab66d..To: <sip:6000@
  192.168.30.254>;tag=gpmqppoqgj..Call-ID: 3c2670486f3e-akz5zhen2v88..CSeq: 1
  31 NOTIFY..Content-Length: 0....
#
U 192.168.30.197:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK734acfaa
  ;rport=5060;received=192.168.30.254..From: "" <sip:6010@192.168.30.254:5060
  >;tag=as2c7f23d2..To: "Reception 6001" <sip:6001@192.168.30.254:5060>;tag=9
  48bd7d8bd..Call-ID: 3551f7a8811d2d36..CSeq: 110 NOTIFY..Contact: "Reception
   6001" <sip:6001@192.168.30.197:5060;transport=udp>;+sip.instance="<urn:uui
  d:00000000-0000-1000-8000-00085D18F672>"..Server: Aastra 57i/2.4.1.37..Cont
  ent-Length: 0....
#
U 192.168.30.197:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK77665be5
  ;rport=5060;received=192.168.30.254..From: "" <sip:6002@192.168.30.254:5060
  >;tag=as49e754a3..To: "Reception 6001" <sip:6001@192.168.30.254:5060>;tag=7
  98cae11d2..Call-ID: 5ccd16b2542c5816..CSeq: 112 NOTIFY..Contact: "Reception
   6001" <sip:6001@192.168.30.197:5060;transport=udp>;+sip.instance="<urn:uui
  d:00000000-0000-1000-8000-00085D18F672>"..Server: Aastra 57i/2.4.1.37..Cont
  ent-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.188:5060
  OPTIONS sip:6005@192.168.30.188:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.2
  54:5060;branch=z9hG4bK37be1a09;rport..From: "asterisk" <sip:asterisk@192.16
  8.30.254>;tag=as6481420b..To: <sip:6005@192.168.30.188:5060>..Contact: <sip
  :asterisk@192.168.30.254>..Call-ID: 1d9f82e5154c5fdd5676919e6685a115@192.16
  8.30.254..CSeq: 102 OPTIONS..User-Agent: Asterisk PBX (Fireworx)..Max-Forwa
  rds: 70..Date: Thu, 22 Jan 2009 21:22:11 GMT..Allow: INVITE, ACK, CANCEL, O
  PTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Length:
   0....
#
U 192.168.30.188:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK37be1a09
  ;rport..From: "asterisk" <sip:asterisk@192.168.30.254>;tag=as6481420b..To:
  <sip:6005@192.168.30.188:5060>;tag=4252B4EB-7EDE7926..CSeq: 102 OPTIONS..Ca
  ll-ID: 1d9f82e5154c5fdd5676919e6685a115@192.168.30.254..Contact: <sip:6005@
  192.168.30.188:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointI
  P-SPIP_330-UA/3.1.1.0137..Accept-Language: en..Content-Length: 0....
exit
605 received, 0 dropped