<p><a href="https://github.com/ovidiusas" class="user-mention">@ovidiusas</a> , according to the RFC3261 grammar , the contact body<br>
["test" sip:test@192.168.2.113:53814;ob;reg-id=1;+sip.instance="urn:uuid:ed409b05-1872-36ee-8ba0-865cb642250b"]<br>
is not valid. If display name is present, the URI must be enclosed between angle brackets (see page 227 in the RFC):</p>

<p>Contact        =  ("Contact" / "m" ) HCOLON<br>
                  ( STAR / (contact-param *(COMMA contact-param)))<br>
contact-param  =  (name-addr / addr-spec) *(SEMI contact-params)<br>
name-addr      =  [ display-name ] LAQUOT addr-spec RAQUOT<br>
addr-spec      =  SIP-URI / SIPS-URI / absoluteURI<br>
display-name   =  *(token LWS)/ quoted-string</p>

<p>So, the correct format should be : <br>
["test" <a>sip:test@192.168.2.113:53814</a>;ob;reg-id=1;+sip.instance="urn:uuid:ed409b05-1872-36ee-8ba0-865cb642250b"]</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">&mdash;<br>Reply to this email directly or <a href='https://github.com/OpenSIPS/opensips/issues/228#issuecomment-42639830'>view it on GitHub</a>.<img src='https://github.com/notifications/beacon/5479561__eyJzY29wZSI6Ik5ld3NpZXM6QmVhY29uIiwiZXhwaXJlcyI6MTcxNTIzOTI3NCwiZGF0YSI6eyJpZCI6MzE3NzEwOTN9fQ==--374ab0997964fe237d7c041764672b673b63131d.gif' height='1' width='1'></p>