- '^REGISTER'
- 'Contact: "TestBria" <sip:testuser1003@127.126.0.1:50602;ob>;reg-id=1;\+sip.instance="<urn:uuid:C3DD6013-20E8-40E3-8EA2-5849B02ED0C4>"'
- 'Contact: "TestBria" <sip:testuser1003@127.126.0.1:6666;ob>;expires=0'
- 'Content-Length: 0'
- 'Expires: \d+'
- '_:NOT:_Expires: 0'
- 'Authorization: Digest username="testuser1003"'