REGISTER sip:83.102.205.31 SIP/2.0
Via: SIP/2.0/UDP 212.193.175.33:5060;branch=z9hG4bK1e91a1e2;rport
Max-Forwards: 70
From: <sip:4959677745@83.102.205.31>;tag=as249e1044
  To: <sip:4959677745@83.102.205.31>
Call-ID: 4f82fc12175faa346bcc25af69c66639@127.0.0.1
CSeq: 103 REGISTER
User-Agent: FPBX-2.11.0(1.8.10.1)
Expires: 120
Contact: <sip:4959677745@212.193.175.33:5060>
Content-Length: 0

SIP/2.0 100 Trying
Via: SIP/2.0/UDP 212.193.175.33:5060;branch=z9hG4bK1e91a1e2;received=212.193.175.254;rport=12998
From: <sip:4959677745@83.102.205.31>;tag=as249e1044
To: <sip:4959677745@83.102.205.31>
Call-ID: 4f82fc12175faa346bcc25af69c66639@127.0.0.1
CSeq: 103 REGISTER
User-Agent: Beeline B2B
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces
Content-Length: 0

SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 212.193.175.33:5060;branch=z9hG4bK1e91a1e2;received=212.193.175.254;rport=12998
From: <sip:4959677745@83.102.205.31>;tag=as249e1044
To: <sip:4959677745@83.102.205.31>;tag=as330c4256
Call-ID: 4f82fc12175faa346bcc25af69c66639@127.0.0.1
CSeq: 103 REGISTER
User-Agent: Beeline B2B
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces
WWW-Authenticate: Digest algorithm=MD5, realm="b2b.corbina.net", nonce="07ec9e26"
Content-Length: 0

REGISTER sip:83.102.205.31 SIP/2.0
Via: SIP/2.0/UDP 192.168.50.31:5060;branch=z9hG4bK5aa774f0;rport
Max-Forwards: 70
From: <sip:4959677745@83.102.205.31>;tag=as57e2b54e
To: <sip:4959677745@83.102.205.31>
Call-ID: 31fe3a860ddc7cc64ea1b0ed76fe8c07@127.0.0.1
CSeq: 102 REGISTER
User-Agent: FPBX-2.11.0(1.8.10.1)
Expires: 120
Contact: <sip:4959677745@192.168.50.31:5060>
Content-Length: 0