< INVITE sip:2122020743@10.3.5.1:5060 SIP/2.0
< Call-ID: 97037a-97@147.135.0.128
< CSeq: 1 INVITE
< From: "Unavailable"<sip:147.135.0.128>;tag=479b
< To: "Mark Kamichoff"<sip:s@10.3.5.1>
< Via: SIP/2.0/UDP 147.135.0.128:5060;branch=z9hG4bK-BroadWorks.192.168.0.3-192.168.0.128V5060-0-470344215-1909890038-1265808557101-
< Contact: <sip:147.135.0.128:5060>
< Supported: 100rel
< Max-Forwards: 69
< Content-Length:  309
< Content-Type: application/sdp
< 
< v=0
< o=2475098871 10 10 IN IP4 147.135.2.247
< s=-
< c=IN IP4 147.135.2.248
< t=0 0
< m=audio 21338 RTP/AVP 0 8 18 96 97 101
< a=rtpmap:0 PCMU/8000
< a=rtpmap:8 PCMA/8000
< a=rtpmap:18 G729/8000
< a=fmtp:18 annexb=no
< a=rtpmap:96 iLBC/8000
< a=fmtp:96 mode=30
< a=rtpmap:97 t38/8000
< a=rtpmap:101 telephone-event/8000

> SIP/2.0 401 Unauthorized
> Via: SIP/2.0/UDP 147.135.0.128:5060;branch=z9hG4bK-BroadWorks.192.168.0.3-192.168.0.128V5060-0-470344215-1909890038-1265808557101-;received=147.135.0.128
> From: "Unavailable"<sip:147.135.0.128>;tag=479b
> To: "Mark Kamichoff"<sip:s@10.3.5.1>;tag=as4c6fddbc
> Call-ID: 97037a-97@147.135.0.128
> CSeq: 1 INVITE
> Server: Asterisk PBX 1.6.2.0~rc7-1
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
> Supported: replaces, timer
> WWW-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="758e4a53"
> Content-Length: 0

< ACK sip:2122020743@10.3.5.1:5060 SIP/2.0
< Call-ID: 97037a-97@147.135.0.128
< CSeq: 1 ACK
< From: "Unavailable"<sip:147.135.0.128>;tag=479b
< To: "Mark Kamichoff"<sip:s@10.3.5.1>;tag=as4c6fddbc
< Via: SIP/2.0/UDP 147.135.0.128:5060;branch=z9hG4bK-BroadWorks.192.168.0.3-192.168.0.128V5060-0-470344215-1909890038-1265808557101-
< Max-Forwards: 70
< Content-Length:    0