U 192.168.30.191:5060 -> 192.168.30.254:5060
  INVITE sip:6002@192.168.30.254:5060;user=phone SIP/2.0..Via: SIP/2.0/UDP 19
  2.168.30.191:5060;branch=z9hG4bK69dc806fD5FFC342..From: "6011" <sip:6011@19
  2.168.30.254>;tag=C97A2C96-4AE4DB3D..To: <sip:6002@192.168.30.254;user=phon
  e>..CSeq: 1 INVITE..Call-ID: 9f8049f9-aa32db44-8c78ae13@192.168.30.191..Con
  tact: <sip:6011@192.168.30.191:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTI
  ONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: Po
  lycomSoundStationIP-SPIP_4000-UA/3.1.1.0137..Accept-Language: en..Supported
  : 100rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 70..Co
  ntent-Type: application/sdp..Content-Length: 215....v=0..o=- 1233159489 123
  3159489 IN IP4 192.168.30.191..s=Polycom IP Phone..c=IN IP4 192.168.30.191.
  .t=0 0..m=audio 2230 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 -> 192.168.30.191:5060
  SIP/2.0 407 Proxy Authentication Required..Via: SIP/2.0/UDP 192.168.30.191:
  5060;branch=z9hG4bK69dc806fD5FFC342;received=192.168.30.191..From: "6011" <
  sip:6011@192.168.30.254>;tag=C97A2C96-4AE4DB3D..To: <sip:6002@192.168.30.25
  4;user=phone>;tag=as1db034db..Call-ID: 9f8049f9-aa32db44-8c78ae13@192.168.3
  0.191..CSeq: 1 INVITE..User-Agent: Asterisk PBX (Fireworx)..Allow: INVITE,
  ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..P
  roxy-Authenticate: Digest algorithm=MD5, realm="fireworx", nonce="212e1080"
  ..Content-Length: 0....
#
U 192.168.30.191:5060 -> 192.168.30.254:5060
  ACK sip:6002@192.168.30.254:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.191:5
  060;branch=z9hG4bK69dc806fD5FFC342..From: "6011" <sip:6011@192.168.30.254>;
  tag=C97A2C96-4AE4DB3D..To: <sip:6002@192.168.30.254;user=phone>;tag=as1db03
  4db..CSeq: 1 ACK..Call-ID: 9f8049f9-aa32db44-8c78ae13@192.168.30.191..Conta
  ct: <sip:6011@192.168.30.191:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTION
  S, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: Poly
  comSoundStationIP-SPIP_4000-UA/3.1.1.0137..Accept-Language: en..Max-Forward
  s: 70..Content-Length: 0....
#
U 192.168.30.191:5060 -> 192.168.30.254:5060
  INVITE sip:6002@192.168.30.254:5060;user=phone SIP/2.0..Via: SIP/2.0/UDP 19
  2.168.30.191:5060;branch=z9hG4bKf96a13b8974083F7..From: "6011" <sip:6011@19
  2.168.30.254>;tag=C97A2C96-4AE4DB3D..To: <sip:6002@192.168.30.254;user=phon
  e>..CSeq: 2 INVITE..Call-ID: 9f8049f9-aa32db44-8c78ae13@192.168.30.191..Con
  tact: <sip:6011@192.168.30.191:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTI
  ONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: Po
  lycomSoundStationIP-SPIP_4000-UA/3.1.1.0137..Accept-Language: en..Supported
  : 100rel,replaces..Allow-Events: talk,hold,conference..Proxy-Authorization:
   Digest username="6011", realm="fireworx", nonce="212e1080", uri="sip:6002@
  192.168.30.254:5060;user=phone", response="f626f704a8be35dfac39f1e90afbe313
  ", algorithm=MD5..Max-Forwards: 70..Content-Type: application/sdp..Content-
  Length: 215....v=0..o=- 1233159489 1233159489 IN IP4 192.168.30.191..s=Poly
  com IP Phone..c=IN IP4 192.168.30.191..t=0 0..m=audio 2230 RTP/AVP 0 8 101.
  .a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:101 telephone-event/8
  000..
#
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=z9hG4bK1eafb17e;rport..From: <sip:6011@192.168.30.254>;tag=as
  566d9104..To: "David Brillert" <sip:6010@192.168.30.254>;tag=ED4B3756-3015E
  4A7..Contact: <sip:6011@192.168.30.254>..Call-ID: 78b3bddb-c51d74e0-938a879
  9@192.168.30.194..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: 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
  ="6011">.<address uri="sip:6011@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 -> 192.168.30.191:5060
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.30.191:5060;branch=z9hG4bKf96a
  13b8974083F7;received=192.168.30.191..From: "6011" <sip:6011@192.168.30.254
  >;tag=C97A2C96-4AE4DB3D..To: <sip:6002@192.168.30.254;user=phone>..Call-ID:
   9f8049f9-aa32db44-8c78ae13@192.168.30.191..CSeq: 2 INVITE..User-Agent: Ast
  erisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBS
  CRIBE, NOTIFY..Supported: replaces..Contact: <sip:6002@192.168.30.254>..Con
  tent-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=z9hG4bK1eafb17e
  ;rport..From: <sip:6011@192.168.30.254>;tag=as566d9104..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=ED4B3756-3015E4A7..CSeq: 105 NOTIFY..Call-I
  D: 78b3bddb-c51d74e0-938a8799@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
  INVITE sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK78ebeaec;rport..From: "6011" <sip:6011@192.168.30.254>
  ;tag=as3b1ef055..To: <sip:6002@192.168.30.190:5060>..Contact: <sip:6011@192
  .168.30.254>..Call-ID: 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..CSe
  q: 102 INVITE..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Remot
  e-Party-ID: "6011" <sip:6011@192.168.30.254>;privacy=off;screen=no..Date: W
  ed, 28 Jan 2009 16:18:24 GMT..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REF
  ER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Type: application/sdp..
  Content-Length: 240....v=0..o=root 319 319 IN IP4 192.168.30.254..s=session
  ..c=IN IP4 192.168.30.254..t=0 0..m=audio 13254 RTP/AVP 0 101..a=rtpmap:0 P
  CMU/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-16..a=silenceSupp
  :off - - - -..a=ptime:20..a=sendrecv..
#
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=z9hG4bK7a4d2d24;rport..From: <sip:6002@192.168.30.254>;tag=as
  4ba16def..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D
  1CA..Contact: <sip:6002@192.168.30.254>..Call-ID: 7c02b12e-7ca388df-c9a4187
  4@192.168.30.194..CSeq: 108 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
  ="6002">.<address uri="sip:6002@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=z9hG4bK42c88427;rport..From: <sip:6002@192.168.30.254>;tag=as
  64d9d186..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=C4303C28-E9827
  A59..Contact: <sip:6002@192.168.30.254>..Call-ID: 3f88365-d8decdee-a7a8c16f
  @192.168.30.190..CSeq: 187 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 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK78eb
  eaec;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..To: <sip
  :6002@192.168.30.190:5060>;tag=AEE50164-5DEB18B5..CSeq: 102 INVITE..Call-ID
  : 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..Contact: <sip:6002@192.1
  68.30.190:5060>..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137..Ac
  cept-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=z9hG4bK7a4d2d24
  ;rport..From: <sip:6002@192.168.30.254>;tag=as4ba16def..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D1CA..CSeq: 108 NOTIFY..Call-I
  D: 7c02b12e-7ca388df-c9a41874@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=z9hG4bK42c88427
  ;rport..From: <sip:6002@192.168.30.254>;tag=as64d9d186..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=C4303C28-E9827A59..CSeq: 187 NOTIFY..Call-I
  D: 3f88365-d8decdee-a7a8c16f@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 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK78e
  beaec;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..To: <si
  p:6002@192.168.30.190:5060>;tag=AEE50164-5DEB18B5..CSeq: 102 INVITE..Call-I
  D: 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..Contact: <sip:6002@192.
  168.30.190:5060>..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137..A
  llow-Events: talk,hold,conference..Accept-Language: en..Content-Length: 0..
  ..
#
U 192.168.30.254:5060 -> 192.168.30.191:5060
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.30.191:5060;branch=z9hG4bKf96
  a13b8974083F7;received=192.168.30.191..From: "6011" <sip:6011@192.168.30.25
  4>;tag=C97A2C96-4AE4DB3D..To: <sip:6002@192.168.30.254;user=phone>;tag=as55
  bd2bb9..Call-ID: 9f8049f9-aa32db44-8c78ae13@192.168.30.191..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 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK78ebeaec
  ;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..To: <sip:600
  2@192.168.30.190:5060>;tag=AEE50164-5DEB18B5..CSeq: 102 INVITE..Call-ID: 26
  b66e76253e67fd37de7bba76f7579b@192.168.30.254..Contact: <sip:6002@192.168.3
  0.190:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSC
  RIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_65
  0-UA/3.1.1.0137..Accept-Language: en..Content-Type: application/sdp..Conten
  t-Length: 203....v=0..o=- 1233159499 1233159499 IN IP4 192.168.30.190..s=Po
  lycom IP Phone..c=IN IP4 192.168.30.190..t=0 0..m=audio 2234 RTP/AVP 0 101.
  .a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..
#
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=z9hG4bK44cd5b43;rport..From: "6011" <sip:6011@192.168.30.254>;ta
  g=as3b1ef055..To: <sip:6002@192.168.30.190:5060>;tag=AEE50164-5DEB18B5..Con
  tact: <sip:6011@192.168.30.254>..Call-ID: 26b66e76253e67fd37de7bba76f7579b@
  192.168.30.254..CSeq: 102 ACK..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Remote-Party-ID: "6011" <sip:6011@192.168.30.254>;privacy=off;sc
  reen=no..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=z9hG4bK7c28d3a2;rport..From: <sip:6002@192.168.30.254>;tag=as
  4ba16def..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D
  1CA..Contact: <sip:6002@192.168.30.254>..Call-ID: 7c02b12e-7ca388df-c9a4187
  4@192.168.30.194..CSeq: 109 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
  ="6002">.<address uri="sip:6002@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=z9hG4bK4568d900;rport..From: <sip:6002@192.168.30.254>;tag=as
  64d9d186..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=C4303C28-E9827
  A59..Contact: <sip:6002@192.168.30.254>..Call-ID: 3f88365-d8decdee-a7a8c16f
  @192.168.30.190..CSeq: 188 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 -> 192.168.30.191:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.191:5060;branch=z9hG4bKf96a13b8
  974083F7;received=192.168.30.191..From: "6011" <sip:6011@192.168.30.254>;ta
  g=C97A2C96-4AE4DB3D..To: <sip:6002@192.168.30.254;user=phone>;tag=as55bd2bb
  9..Call-ID: 9f8049f9-aa32db44-8c78ae13@192.168.30.191..CSeq: 2 INVITE..User
  -Agent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE,
  REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:6002@192.168.3
  0.254>..Content-Type: application/sdp..Content-Length: 240....v=0..o=root 3
  19 319 IN IP4 192.168.30.254..s=session..c=IN IP4 192.168.30.254..t=0 0..m=
  audio 15344 RTP/AVP 0 101..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-eve
  nt/8000..a=fmtp:101 0-16..a=silenceSupp:off - - - -..a=ptime:20..a=sendrecv
  ..
#
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=z9hG4bK7c28d3a2
  ;rport..From: <sip:6002@192.168.30.254>;tag=as4ba16def..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D1CA..CSeq: 109 NOTIFY..Call-I
  D: 7c02b12e-7ca388df-c9a41874@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=z9hG4bK4568d900
  ;rport..From: <sip:6002@192.168.30.254>;tag=as64d9d186..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=C4303C28-E9827A59..CSeq: 188 NOTIFY..Call-I
  D: 3f88365-d8decdee-a7a8c16f@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 192.168.30.191:5060 -> 192.168.30.254:5060
  ACK sip:6002@192.168.30.254 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.191:5060;b
  ranch=z9hG4bKd00b96c2044661B..From: "6011" <sip:6011@192.168.30.254>;tag=C9
  7A2C96-4AE4DB3D..To: <sip:6002@192.168.30.254;user=phone>;tag=as55bd2bb9..C
  Seq: 2 ACK..Call-ID: 9f8049f9-aa32db44-8c78ae13@192.168.30.191..Contact: <s
  ip:6011@192.168.30.191:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INF
  O, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndStationIP-SPIP_4000-UA/3.1.1.0137..Accept-Language: en..Max-Forwards: 70.
  .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=z9hG4bK5b650169;rport..From: "asterisk" <sip:asterisk@192.
  168.30.254>;tag=as00e2bd31..To: <sip:allworx@192.168.2.254:5060>..Contact:
  <sip:asterisk@192.168.30.254>..Call-ID: 2bc429401c3fa62c1b0c17db74b941b3@19
  2.168.30.254..CSeq: 102 OPTIONS..User-Agent: Asterisk PBX (Fireworx)..Max-F
  orwards: 70..Date: Wed, 28 Jan 2009 16:18:23 GMT..Allow: INVITE, ACK, CANCE
  L, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Len
  gth: 0....
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  INVITE sip:6011@192.168.30.254 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.190:506
  0;branch=z9hG4bK7f2dfcbeAF029DBF..From: <sip:6002@192.168.30.190:5060>;tag=
  AEE50164-5DEB18B5..To: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..CSe
  q: 1 INVITE..Call-ID: 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..Cont
  act: <sip:6002@192.168.30.190:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIO
  NS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: Pol
  ycomSoundPointIP-SPIP_650-UA/3.1.1.0137..Accept-Language: en..Supported: 10
  0rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 70..Conten
  t-Type: application/sdp..Content-Length: 203....v=0..o=- 1233159499 1233159
  500 IN IP4 192.168.30.190..s=Polycom IP Phone..c=IN IP4 192.168.30.190..t=0
   0..a=inactive..m=audio 2234 RTP/AVP 0 101..a=rtpmap:0 PCMU/8000..a=rtpmap:
  101 telephone-event/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=z9hG4bK7f2d
  fcbeAF029DBF;received=192.168.30.190..From: <sip:6002@192.168.30.190:5060>;
  tag=AEE50164-5DEB18B5..To: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055.
  .Call-ID: 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..CSeq: 1 INVITE..
  User-Agent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS, B
  YE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:6011@192.1
  68.30.254>..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=z9hG4bK7f2dfcbe
  AF029DBF;received=192.168.30.190..From: <sip:6002@192.168.30.190:5060>;tag=
  AEE50164-5DEB18B5..To: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..Cal
  l-ID: 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..CSeq: 1 INVITE..User
  -Agent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE,
  REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:6011@192.168.3
  0.254>..Content-Type: application/sdp..Content-Length: 240....v=0..o=root 3
  19 320 IN IP4 192.168.30.254..s=session..c=IN IP4 192.168.30.254..t=0 0..m=
  audio 13254 RTP/AVP 0 101..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-eve
  nt/8000..a=fmtp:101 0-16..a=silenceSupp:off - - - -..a=ptime:20..a=inactive
  ..
#
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=z9hG4bK3b8bb45e;rport..From: <sip:6002@192.168.30.254>;tag=as
  4ba16def..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D
  1CA..Contact: <sip:6002@192.168.30.254>..Call-ID: 7c02b12e-7ca388df-c9a4187
  4@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: 351....<?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
  ="6002">.<address uri="sip:6002@192.168.30.254;user=ip" priority="0.800000"
  >.<status status="closed" />.<msnsubstatus substatus="offline" />.</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=z9hG4bK268bd728;rport..From: <sip:6002@192.168.30.254>;tag=as
  64d9d186..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=C4303C28-E9827
  A59..Contact: <sip:6002@192.168.30.254>..Call-ID: 3f88365-d8decdee-a7a8c16f
  @192.168.30.190..CSeq: 189 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..Max
  -Forwards: 70..Event: presence..Content-Type: application/xpidf+xml..Subscr
  iption-State: active..Content-Length: 351....<?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="closed" />.<msnsubstatus substatus="offline" />.</address>
  .</atom>.</presence>.
#
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=z9hG4bK3b8bb45e
  ;rport..From: <sip:6002@192.168.30.254>;tag=as4ba16def..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D1CA..CSeq: 110 NOTIFY..Call-I
  D: 7c02b12e-7ca388df-c9a41874@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
  ACK sip:6011@192.168.30.254 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.190:5060;b
  ranch=z9hG4bK49339f8D0F26DA9..From: <sip:6002@192.168.30.190:5060>;tag=AEE5
  0164-5DEB18B5..To: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..CSeq: 1
   ACK..Call-ID: 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..Contact: <s
  ip:6002@192.168.30.190:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INF
  O, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_650-UA/3.1.1.0137..Accept-Language: en..Max-Forwards: 70..Co
  ntent-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=z9hG4bK268bd728
  ;rport..From: <sip:6002@192.168.30.254>;tag=as64d9d186..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=C4303C28-E9827A59..CSeq: 189 NOTIFY..Call-I
  D: 3f88365-d8decdee-a7a8c16f@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 -> 192.168.1.2:5060
  OPTIONS sip:192.168.1.2;user=phone SIP/2.0..Via: SIP/2.0/UDP 192.168.30.254
  :5060;branch=z9hG4bK56f3e35e;rport..From: "asterisk" <sip:asterisk@192.168.
  30.254>;tag=as667edeb3..To: <sip:192.168.1.2;user=phone>..Contact: <sip:ast
  erisk@192.168.30.254>..Call-ID: 620a122d06388dec457aeffb0dbc2450@192.168.30
  .254..CSeq: 102 OPTIONS..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards:
   70..Date: Wed, 28 Jan 2009 16:18:27 GMT..Allow: INVITE, ACK, CANCEL, OPTIO
  NS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Length: 0..
  ..
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  REFER sip:6011@192.168.30.254 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.190:5060
  ;branch=z9hG4bK9667c273DD1820C..From: <sip:6002@192.168.30.190:5060>;tag=AE
  E50164-5DEB18B5..To: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..CSeq:
   2 REFER..Call-ID: 26b66e76253e67fd37de7bba76f7579b@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..Refer-To: sip:6010@192.168.30.254:5060.
  .Referred-By: <sip:6002@192.168.30.254>..Max-Forwards: 70..Content-Length:
  0....
#
U 192.168.30.254:5060 -> 192.168.30.190:5060
  SIP/2.0 202 Accepted..Via: SIP/2.0/UDP 192.168.30.190:5060;branch=z9hG4bK96
  67c273DD1820C;received=192.168.30.190..From: <sip:6002@192.168.30.190:5060>
  ;tag=AEE50164-5DEB18B5..To: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055
  ..Call-ID: 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..CSeq: 2 REFER..
  User-Agent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS, B
  YE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:6011@192.1
  68.30.254>..Content-Length: 0....
#
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=z9hG4bK0244ce2a;rport..From: "6011" <sip:6011@192.168.30.254>
  ;tag=as3b1ef055..To: <sip:6002@192.168.30.190:5060>;tag=AEE50164-5DEB18B5..
  Contact: <sip:6011@192.168.30.254>..Call-ID: 26b66e76253e67fd37de7bba76f757
  9b@192.168.30.254..CSeq: 103 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..M
  ax-Forwards: 70..Remote-Party-ID: "6011" <sip:6011@192.168.30.254>;privacy=
  off;screen=no..Event: refer;id=2..Subscription-state: active..Content-Type:
   message/sipfrag;version=2.0..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REF
  ER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Length: 21....SIP/2.0 1
  83 Ringing..
#
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=z9hG4bK1c923eef;rport..From: "6011" <sip:6011@192.168.30.254>
  ;tag=as3b1ef055..To: <sip:6002@192.168.30.190:5060>;tag=AEE50164-5DEB18B5..
  Contact: <sip:6011@192.168.30.254>..Call-ID: 26b66e76253e67fd37de7bba76f757
  9b@192.168.30.254..CSeq: 104 NOTIFY..User-Agent: Asterisk PBX (Fireworx)..M
  ax-Forwards: 70..Remote-Party-ID: "6011" <sip:6011@192.168.30.254>;privacy=
  off;screen=no..Event: refer;id=2..Subscription-state: terminated;reason=nor
  esource..Content-Type: message/sipfrag;version=2.0..Allow: INVITE, ACK, CAN
  CEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-L
  ength: 16....SIP/2.0 200 Ok..
#
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=z9hG4bK0244ce2a
  ;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..To: <sip:600
  2@192.168.30.190:5060>;tag=AEE50164-5DEB18B5..CSeq: 103 NOTIFY..Call-ID: 26
  b66e76253e67fd37de7bba76f7579b@192.168.30.254..Contact: <sip:6002@192.168.3
  0.190:5060>..Event: refer;id=2..User-Agent: PolycomSoundPointIP-SPIP_650-UA
  /3.1.1.0137..Accept-Language: en..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=z9hG4bK419608b8;rport..From: <sip:6002@192.168.30.254>;tag=as
  4ba16def..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D
  1CA..Contact: <sip:6002@192.168.30.254>..Call-ID: 7c02b12e-7ca388df-c9a4187
  4@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
  ="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=z9hG4bK1e1aa687;rport..From: <sip:6002@192.168.30.254>;tag=as
  64d9d186..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=C4303C28-E9827
  A59..Contact: <sip:6002@192.168.30.254>..Call-ID: 3f88365-d8decdee-a7a8c16f
  @192.168.30.190..CSeq: 190 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 192.168.30.190:5060 -> 192.168.30.254:5060
  BYE sip:6011@192.168.30.254 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.190:5060;b
  ranch=z9hG4bK805bb61dC7AF40E6..From: <sip:6002@192.168.30.190:5060>;tag=AEE
  50164-5DEB18B5..To: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..CSeq:
  3 BYE..Call-ID: 26b66e76253e67fd37de7bba76f7579b@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..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=z9hG4bK805bb61d
  C7AF40E6;received=192.168.30.190..From: <sip:6002@192.168.30.190:5060>;tag=
  AEE50164-5DEB18B5..To: "6011" <sip:6011@192.168.30.254>;tag=as3b1ef055..Cal
  l-ID: 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..CSeq: 3 BYE..User-Ag
  ent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REF
  ER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:6011@192.168.30.2
  54>..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=z9hG4bK419608b8
  ;rport..From: <sip:6002@192.168.30.254>;tag=as4ba16def..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D1CA..CSeq: 111 NOTIFY..Call-I
  D: 7c02b12e-7ca388df-c9a41874@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/2.0 500 Internal Server Error..Via: SIP/2.0/UDP 192.168.30.254:5060;bra
  nch=z9hG4bK1c923eef;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as3b1
  ef055..To: <sip:6002@192.168.30.190:5060>;tag=AEE50164-5DEB18B5..CSeq: 104
  NOTIFY..Call-ID: 26b66e76253e67fd37de7bba76f7579b@192.168.30.254..Event: re
  fer;id=2..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137..Accept-La
  nguage: 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=z9hG4bK1e1aa687
  ;rport..From: <sip:6002@192.168.30.254>;tag=as64d9d186..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=C4303C28-E9827A59..CSeq: 190 NOTIFY..Call-I
  D: 3f88365-d8decdee-a7a8c16f@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 -> 192.168.30.194:5060
  INVITE sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK6e207b57;rport..From: "6011" <sip:6011@192.168.30.254>
  ;tag=as326262f8..To: <sip:6010@192.168.30.194:5060>..Contact: <sip:6011@192
  .168.30.254>..Call-ID: 07058cd709d9c88f6f08f12615bf5f9d@192.168.30.254..CSe
  q: 102 INVITE..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Remot
  e-Party-ID: "6011" <sip:6011@192.168.30.254>;privacy=off;screen=no..Date: W
  ed, 28 Jan 2009 16:18:30 GMT..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REF
  ER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Type: application/sdp..
  Content-Length: 240....v=0..o=root 319 319 IN IP4 192.168.30.254..s=session
  ..c=IN IP4 192.168.30.254..t=0 0..m=audio 14644 RTP/AVP 0 101..a=rtpmap:0 P
  CMU/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-16..a=silenceSupp
  :off - - - -..a=ptime:20..a=sendrecv..
#
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=z9hG4bK4a132764;rport..From: <sip:6010@192.168.30.254>;tag=as
  1c3865c1..To: "David Brillert" <sip:6010@192.168.30.254>;tag=E13F0DEB-48653
  730..Contact: <sip:6010@192.168.30.254>..Call-ID: 384354f4-7ee6667d-12825a4
  a@192.168.30.194..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: 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=z9hG4bK437f987a;rport..From: <sip:6010@192.168.30.254>;tag=as
  186fb9e1..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=B0B4A510-35EE8
  E01..Contact: <sip:6010@192.168.30.254>..Call-ID: 6df8280d-fafe6f56-822de99
  7@192.168.30.190..CSeq: 167 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 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK6e20
  7b57;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as326262f8..To: <sip
  :6010@192.168.30.194:5060>;tag=B6D459FC-C395B8A5..CSeq: 102 INVITE..Call-ID
  : 07058cd709d9c88f6f08f12615bf5f9d@192.168.30.254..Contact: <sip:6010@192.1
  68.30.194:5060>..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.1.1.0137..Ac
  cept-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=z9hG4bK437f987a
  ;rport..From: <sip:6010@192.168.30.254>;tag=as186fb9e1..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=B0B4A510-35EE8E01..CSeq: 167 NOTIFY..Call-I
  D: 6df8280d-fafe6f56-822de997@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=z9hG4bK4a132764
  ;rport..From: <sip:6010@192.168.30.254>;tag=as1c3865c1..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=E13F0DEB-48653730..CSeq: 105 NOTIFY..Call-I
  D: 384354f4-7ee6667d-12825a4a@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 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK6e2
  07b57;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as326262f8..To: <si
  p:6010@192.168.30.194:5060>;tag=B6D459FC-C395B8A5..CSeq: 102 INVITE..Call-I
  D: 07058cd709d9c88f6f08f12615bf5f9d@192.168.30.254..Contact: <sip:6010@192.
  168.30.194:5060>..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.1.1.0137..A
  llow-Events: talk,hold,conference..Accept-Language: en..Content-Length: 0..
  ..
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  CANCEL sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK6e207b57;rport..From: "6011" <sip:6011@192.168.30.254>
  ;tag=as326262f8..To: <sip:6010@192.168.30.194:5060>..Call-ID: 07058cd709d9c
  88f6f08f12615bf5f9d@192.168.30.254..CSeq: 102 CANCEL..User-Agent: Asterisk
  PBX (Fireworx)..Max-Forwards: 70..Remote-Party-ID: "6011" <sip:6011@192.168
  .30.254>;privacy=off;screen=no..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=z9hG4bK3e4af834;rport..From: <sip:6010@192.168.30.254>;tag=as
  1c3865c1..To: "David Brillert" <sip:6010@192.168.30.254>;tag=E13F0DEB-48653
  730..Contact: <sip:6010@192.168.30.254>..Call-ID: 384354f4-7ee6667d-12825a4
  a@192.168.30.194..CSeq: 106 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=z9hG4bK05435221;rport..From: <sip:6010@192.168.30.254>;tag=as
  186fb9e1..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=B0B4A510-35EE8
  E01..Contact: <sip:6010@192.168.30.254>..Call-ID: 6df8280d-fafe6f56-822de99
  7@192.168.30.190..CSeq: 168 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 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK6e207b57
  ;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as326262f8..To: <sip:601
  0@192.168.30.194:5060>..CSeq: 102 CANCEL..Call-ID: 07058cd709d9c88f6f08f126
  15bf5f9d@192.168.30.254..Contact: <sip:6010@192.168.30.194:5060>..User-Agen
  t: 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=z9hG4bK05435221
  ;rport..From: <sip:6010@192.168.30.254>;tag=as186fb9e1..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=B0B4A510-35EE8E01..CSeq: 168 NOTIFY..Call-I
  D: 6df8280d-fafe6f56-822de997@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/2.0 487 Request Cancelled..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=
  z9hG4bK6e207b57;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as326262f
  8..To: <sip:6010@192.168.30.194:5060>;tag=B6D459FC-C395B8A5..CSeq: 102 INVI
  TE..Call-ID: 07058cd709d9c88f6f08f12615bf5f9d@192.168.30.254..Contact: <sip
  :6010@192.168.30.194:5060>..User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.1
  .1.0137..Accept-Language: en..Content-Length: 0....
#
U 192.168.30.254:5060 -> 192.168.30.194:5060
  ACK sip:6010@192.168.30.194:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.254:5
  060;branch=z9hG4bK6e207b57;rport..From: "6011" <sip:6011@192.168.30.254>;ta
  g=as326262f8..To: <sip:6010@192.168.30.194:5060>;tag=B6D459FC-C395B8A5..Con
  tact: <sip:6011@192.168.30.254>..Call-ID: 07058cd709d9c88f6f08f12615bf5f9d@
  192.168.30.254..CSeq: 102 ACK..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Remote-Party-ID: "6011" <sip:6011@192.168.30.254>;privacy=off;sc
  reen=no..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=z9hG4bK3e4af834
  ;rport..From: <sip:6010@192.168.30.254>;tag=as1c3865c1..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=E13F0DEB-48653730..CSeq: 106 NOTIFY..Call-I
  D: 384354f4-7ee6667d-12825a4a@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
  INVITE sip:6002@192.168.30.190:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.25
  4:5060;branch=z9hG4bK538c9afd;rport..From: "6011" <sip:6011@192.168.30.254>
  ;tag=as57e235cc..To: <sip:6002@192.168.30.190:5060>..Contact: <sip:6011@192
  .168.30.254>..Call-ID: 1fd887777b7f151e3dfd1de82fe39b33@192.168.30.254..CSe
  q: 102 INVITE..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..Remot
  e-Party-ID: "6011" <sip:6011@192.168.30.254>;privacy=off;screen=no..Date: W
  ed, 28 Jan 2009 16:18:51 GMT..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REF
  ER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Type: application/sdp..
  Content-Length: 240....v=0..o=root 319 319 IN IP4 192.168.30.254..s=session
  ..c=IN IP4 192.168.30.254..t=0 0..m=audio 19406 RTP/AVP 0 101..a=rtpmap:0 P
  CMU/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-16..a=silenceSupp
  :off - - - -..a=ptime:20..a=sendrecv..
#
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=z9hG4bK6a0370bf;rport..From: <sip:6002@192.168.30.254>;tag=as
  4ba16def..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D
  1CA..Contact: <sip:6002@192.168.30.254>..Call-ID: 7c02b12e-7ca388df-c9a4187
  4@192.168.30.194..CSeq: 112 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
  ="6002">.<address uri="sip:6002@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=z9hG4bK037e9d58;rport..From: <sip:6002@192.168.30.254>;tag=as
  64d9d186..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=C4303C28-E9827
  A59..Contact: <sip:6002@192.168.30.254>..Call-ID: 3f88365-d8decdee-a7a8c16f
  @192.168.30.190..CSeq: 191 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 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK538c
  9afd;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as57e235cc..To: <sip
  :6002@192.168.30.190:5060>;tag=58670843-C3E57D5C..CSeq: 102 INVITE..Call-ID
  : 1fd887777b7f151e3dfd1de82fe39b33@192.168.30.254..Contact: <sip:6002@192.1
  68.30.190:5060>..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137..Ac
  cept-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=z9hG4bK6a0370bf
  ;rport..From: <sip:6002@192.168.30.254>;tag=as4ba16def..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D1CA..CSeq: 112 NOTIFY..Call-I
  D: 7c02b12e-7ca388df-c9a41874@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=z9hG4bK037e9d58
  ;rport..From: <sip:6002@192.168.30.254>;tag=as64d9d186..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=C4303C28-E9827A59..CSeq: 191 NOTIFY..Call-I
  D: 3f88365-d8decdee-a7a8c16f@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 192.168.30.190:5060 -> 192.168.30.254:5060
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK538
  c9afd;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as57e235cc..To: <si
  p:6002@192.168.30.190:5060>;tag=58670843-C3E57D5C..CSeq: 102 INVITE..Call-I
  D: 1fd887777b7f151e3dfd1de82fe39b33@192.168.30.254..Contact: <sip:6002@192.
  168.30.190:5060>..User-Agent: PolycomSoundPointIP-SPIP_650-UA/3.1.1.0137..A
  llow-Events: talk,hold,conference..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=z9hG4bK538c9afd
  ;rport..From: "6011" <sip:6011@192.168.30.254>;tag=as57e235cc..To: <sip:600
  2@192.168.30.190:5060>;tag=58670843-C3E57D5C..CSeq: 102 INVITE..Call-ID: 1f
  d887777b7f151e3dfd1de82fe39b33@192.168.30.254..Contact: <sip:6002@192.168.3
  0.190:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSC
  RIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_65
  0-UA/3.1.1.0137..Accept-Language: en..Content-Type: application/sdp..Conten
  t-Length: 203....v=0..o=- 1233159527 1233159527 IN IP4 192.168.30.190..s=Po
  lycom IP Phone..c=IN IP4 192.168.30.190..t=0 0..m=audio 2240 RTP/AVP 0 101.
  .a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..
#
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=z9hG4bK7199b8e4;rport..From: "6011" <sip:6011@192.168.30.254>;ta
  g=as57e235cc..To: <sip:6002@192.168.30.190:5060>;tag=58670843-C3E57D5C..Con
  tact: <sip:6011@192.168.30.254>..Call-ID: 1fd887777b7f151e3dfd1de82fe39b33@
  192.168.30.254..CSeq: 102 ACK..User-Agent: Asterisk PBX (Fireworx)..Max-For
  wards: 70..Remote-Party-ID: "6011" <sip:6011@192.168.30.254>;privacy=off;sc
  reen=no..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=z9hG4bK4e12fe6e;rport..From: <sip:6002@192.168.30.254>;tag=as
  4ba16def..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D
  1CA..Contact: <sip:6002@192.168.30.254>..Call-ID: 7c02b12e-7ca388df-c9a4187
  4@192.168.30.194..CSeq: 113 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
  ="6002">.<address uri="sip:6002@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=z9hG4bK00882c88;rport..From: <sip:6002@192.168.30.254>;tag=as
  64d9d186..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=C4303C28-E9827
  A59..Contact: <sip:6002@192.168.30.254>..Call-ID: 3f88365-d8decdee-a7a8c16f
  @192.168.30.190..CSeq: 192 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 192.168.30.194:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK4e12fe6e
  ;rport..From: <sip:6002@192.168.30.254>;tag=as4ba16def..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D1CA..CSeq: 113 NOTIFY..Call-I
  D: 7c02b12e-7ca388df-c9a41874@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=z9hG4bK00882c88
  ;rport..From: <sip:6002@192.168.30.254>;tag=as64d9d186..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=C4303C28-E9827A59..CSeq: 192 NOTIFY..Call-I
  D: 3f88365-d8decdee-a7a8c16f@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 -> 192.168.1.2:5060
  OPTIONS sip:192.168.1.2;user=phone SIP/2.0..Via: SIP/2.0/UDP 192.168.30.254
  :5060;branch=z9hG4bK7c17e1f5;rport..From: "asterisk" <sip:asterisk@192.168.
  30.254>;tag=as184860c4..To: <sip:192.168.1.2;user=phone>..Contact: <sip:ast
  erisk@192.168.30.254>..Call-ID: 37f6fd125aa1bf7113b5b875453cfa4c@192.168.30
  .254..CSeq: 102 OPTIONS..User-Agent: Asterisk PBX (Fireworx)..Max-Forwards:
   70..Date: Wed, 28 Jan 2009 16:18:55 GMT..Allow: INVITE, ACK, CANCEL, OPTIO
  NS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported: replaces..Content-Length: 0..
  ..
#
U 192.168.30.190:5060 -> 192.168.30.254:5060
  BYE sip:6011@192.168.30.254 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.190:5060;b
  ranch=z9hG4bK78cc9aedB42CA336..From: <sip:6002@192.168.30.190:5060>;tag=586
  70843-C3E57D5C..To: "6011" <sip:6011@192.168.30.254>;tag=as57e235cc..CSeq:
  1 BYE..Call-ID: 1fd887777b7f151e3dfd1de82fe39b33@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..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=z9hG4bK78cc9aed
  B42CA336;received=192.168.30.190..From: <sip:6002@192.168.30.190:5060>;tag=
  58670843-C3E57D5C..To: "6011" <sip:6011@192.168.30.254>;tag=as57e235cc..Cal
  l-ID: 1fd887777b7f151e3dfd1de82fe39b33@192.168.30.254..CSeq: 1 BYE..User-Ag
  ent: Asterisk PBX (Fireworx)..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REF
  ER, SUBSCRIBE, NOTIFY..Supported: replaces..Contact: <sip:6011@192.168.30.2
  54>..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=z9hG4bK27db0c5f;rport..From: <sip:6002@192.168.30.254>;tag=as
  4ba16def..To: "David Brillert" <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D
  1CA..Contact: <sip:6002@192.168.30.254>..Call-ID: 7c02b12e-7ca388df-c9a4187
  4@192.168.30.194..CSeq: 114 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
  ="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=z9hG4bK308e9004;rport..From: <sip:6002@192.168.30.254>;tag=as
  64d9d186..To: "Reception 6002" <sip:6002@192.168.30.254>;tag=C4303C28-E9827
  A59..Contact: <sip:6002@192.168.30.254>..Call-ID: 3f88365-d8decdee-a7a8c16f
  @192.168.30.190..CSeq: 193 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 -> 192.168.30.191:5060
  BYE sip:6011@192.168.30.191:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.30.254:5
  060;branch=z9hG4bK40a2dd4e;rport..From: <sip:6002@192.168.30.254;user=phone
  >;tag=as55bd2bb9..To: "6011" <sip:6011@192.168.30.254>;tag=C97A2C96-4AE4DB3
  D..Call-ID: 9f8049f9-aa32db44-8c78ae13@192.168.30.191..CSeq: 102 BYE..User-
  Agent: Asterisk PBX (Fireworx)..Max-Forwards: 70..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=z9hG4bK766a87f8;rport..From: <sip:6011@192.168.30.254>;tag=as
  566d9104..To: "David Brillert" <sip:6010@192.168.30.254>;tag=ED4B3756-3015E
  4A7..Contact: <sip:6011@192.168.30.254>..Call-ID: 78b3bddb-c51d74e0-938a879
  9@192.168.30.194..CSeq: 106 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
  ="6011">.<address uri="sip:6011@192.168.30.254;user=ip" priority="0.800000"
  >.<status status="open" />.<msnsubstatus substatus="online" />.</address>.<
  /atom>.</presence>.
#
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=z9hG4bK308e9004
  ;rport..From: <sip:6002@192.168.30.254>;tag=as64d9d186..To: "Reception 6002
  " <sip:6002@192.168.30.254>;tag=C4303C28-E9827A59..CSeq: 193 NOTIFY..Call-I
  D: 3f88365-d8decdee-a7a8c16f@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=z9hG4bK27db0c5f
  ;rport..From: <sip:6002@192.168.30.254>;tag=as4ba16def..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=CBC527FD-CBF0D1CA..CSeq: 114 NOTIFY..Call-I
  D: 7c02b12e-7ca388df-c9a41874@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 192.168.30.191:5060 -> 192.168.30.254:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.30.254:5060;branch=z9hG4bK40a2dd4e
  ;rport..From: <sip:6002@192.168.30.254;user=phone>;tag=as55bd2bb9..To: "601
  1" <sip:6011@192.168.30.254>;tag=C97A2C96-4AE4DB3D..CSeq: 102 BYE..Call-ID:
   9f8049f9-aa32db44-8c78ae13@192.168.30.191..Contact: <sip:6011@192.168.30.1
  91:5060>..User-Agent: PolycomSoundStationIP-SPIP_4000-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=z9hG4bK766a87f8
  ;rport..From: <sip:6011@192.168.30.254>;tag=as566d9104..To: "David Brillert
  " <sip:6010@192.168.30.254>;tag=ED4B3756-3015E4A7..CSeq: 106 NOTIFY..Call-I
  D: 78b3bddb-c51d74e0-938a8799@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....
#