REGISTER sip:drachtio.org SIP/2.0
Via: SIP/2.0/UDP 10.128.77.170:5060;branch=z9hG4bK1sansay2357115221rdb9676
To: <sip:167356@10.128.77.12>
From: "503" <sip:167356@10.128.77.12>;tag=sansay2357115221rdb9676
Call-ID: 1153979666-0-659259900@72.1.47.171
CSeq: 1 REGISTER
Contact: <sip:167356@10.128.77.170:5060;transport=udp;jtr=5882-1>;expires=3600
Authorization: Digest username="167356",realm="sip.drachtio.org",nonce="4fe61e6b-ccb8-47c8-8302-27be8f0b80fd",uri="sip:72.1.46.10:5061",algorithm=MD5,response="9a75860d5f13d8e1067a1e5f5c24e261",qop=auth,nc=000003e9,cnonce="cf1bb785"
User-Agent: Cisco/SPA525G2-7.6.1(ES_RC01)
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER, UPDATE
Max-Forwards: 69
Content-Length: 0