root@lon-voip-a:/etc/init.d# fs_cli
            _____ ____     ____ _     ___
           |  ___/ ___|   / ___| |   |_ _|
           | |_  \___ \  | |   | |    | |
           |  _|  ___) | | |___| |___ | |
           |_|   |____/   \____|_____|___|

*******************************************************
* Anthony Minessale II, Ken Rice, Michael Jerris      *
* FreeSWITCH (http://www.freeswitch.org)              *
* Paypal Donations Appreciated: paypal@freeswitch.org *
* Brought to you by ClueCon http://www.cluecon.com/   *
*******************************************************

Type /help <enter> to see a list of commands


+OK log level  [7]
freeswitch@internal> sofia global siptrace on
+OK Global siptrace on
freeswitch@internal> recv 602 bytes from udp/[7.7.7.7]:42148 at 13:58:03.804412:
   ------------------------------------------------------------------------
   REGISTER sip:8.8.8.8:5060 SIP/2.0
   Via: SIP/2.0/UDP 7.7.7.7;branch=z9hG4bK18955da17867a6f7b
   Max-Forwards: 70
   From: "21" <sip:21@8.8.8.8:5060>;tag=82f40a6909
   To: "21" <sip:21@8.8.8.8:5060>
   Call-ID: fa98a50d3aed7df1
   CSeq: 8782 REGISTER
   Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS, UPDATE, PRACK, SUBSCRIBE, INFO
   Allow-Events: talk, hold, conference, LocalModeStatus
   Contact: "21" <sip:21@7.7.7.7:5060;transport=udp>;+sip.instance="<urn:uuid:00000000-0000-1000-8000-00085D10B6A8>"
   Supported: path, gruu
   User-Agent: Aastra 57i/3.2.2.56
   Content-Length: 0

   ------------------------------------------------------------------------
2011-11-22 13:58:03.790320 [WARNING] sofia_reg.c:1241 SIP auth challenge (REGISTER) on sofia profile 'internal' for [21@8.8.8.8] from ip 7.7.7.7
send 607 bytes to udp/[7.7.7.7]:42148 at 13:58:03.805355:
   ------------------------------------------------------------------------
   SIP/2.0 401 Unauthorized
   Via: SIP/2.0/UDP 7.7.7.7;branch=z9hG4bK18955da17867a6f7b;rport=42148
   From: "21" <sip:21@8.8.8.8:5060>;tag=82f40a6909
   To: "21" <sip:21@8.8.8.8:5060>;tag=pmNB98433ceSe
   Call-ID: fa98a50d3aed7df1
   CSeq: 8782 REGISTER
   User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, precondition, path, replaces
   WWW-Authenticate: Digest realm="8.8.8.8", nonce="ff33f492-1511-11e1-8b13-9179d2513663", algorithm=MD5, qop="auth"
   Content-Length: 0

   ------------------------------------------------------------------------
recv 832 bytes from udp/[7.7.7.7]:42148 at 13:58:03.901239:
   ------------------------------------------------------------------------
   REGISTER sip:8.8.8.8:5060 SIP/2.0
   Via: SIP/2.0/UDP 7.7.7.7;branch=z9hG4bKee2e1452629ff2541
   Max-Forwards: 70
   From: "21" <sip:21@8.8.8.8:5060>;tag=82f40a6909
   To: "21" <sip:21@8.8.8.8:5060>
   Call-ID: fa98a50d3aed7df1
   CSeq: 8783 REGISTER
   Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS, UPDATE, PRACK, SUBSCRIBE, INFO
   Allow-Events: talk, hold, conference, LocalModeStatus
   Authorization: Digest username="21",realm="8.8.8.8",nonce="ff33f492-1511-11e1-8b13-9179d2513663",uri="sip:8.8.8.8:5060",response="e7af61490777b1a4142b85c436e9241d",algorithm=MD5,qop=auth,cnonce="5e5c1763",nc=00000001
   Contact: "21" <sip:21@7.7.7.7:5060;transport=udp>;+sip.instance="<urn:uuid:00000000-0000-1000-8000-00085D10B6A8>"
   Supported: path, gruu
   User-Agent: Aastra 57i/3.2.2.56
   Content-Length: 0

   ------------------------------------------------------------------------
send 644 bytes to udp/[7.7.7.7]:42148 at 13:58:03.903806:
   ------------------------------------------------------------------------
   SIP/2.0 200 OK
   Via: SIP/2.0/UDP 7.7.7.7;branch=z9hG4bKee2e1452629ff2541;rport=42148
   From: "21" <sip:21@8.8.8.8:5060>;tag=82f40a6909
   To: "21" <sip:21@8.8.8.8:5060>;tag=QXe4a4N70N4Ba
   Call-ID: fa98a50d3aed7df1
   CSeq: 8783 REGISTER
   Contact: "21" <sip:21@7.7.7.7:5060;transport=udp>;+sip.instance="<urn:uuid:00000000-0000-1000-8000-00085D10B6A8>";expires=300
   Date: Tue, 22 Nov 2011 13:58:03 GMT
   User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, precondition, path, replaces
   Content-Length: 0

   ------------------------------------------------------------------------
send 882 bytes to udp/[7.7.7.7]:5060 at 13:58:03.994170:
   ------------------------------------------------------------------------
   NOTIFY sip:21@7.7.7.7:5060;transport=udp SIP/2.0
   Via: SIP/2.0/UDP 8.8.8.8;rport;branch=z9hG4bKpHHFS3807HX9F
   Max-Forwards: 70
   From: <sip:21@8.8.8.8>;tag=r67vcZ6ayytyN
   To: <sip:21@8.8.8.8>
   Call-ID: d6af13ba-8fb4-122f-ed88-f23c91df39ab
   CSeq: 20649077 NOTIFY
   Contact: <sip:mod_sofia@8.8.8.8:5060>
   User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, precondition, path, replaces
   Event: message-summary
   Allow-Events: talk, hold, presence, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer
   Subscription-State: terminated;reason=timeout
   Content-Type: application/simple-message-summary
   Content-Length: 63

   Messages-Waiting: no
   Message-Account: sip:21@8.8.8.8

   ------------------------------------------------------------------------