SIP/2.0 200 OK
Via: SIP/2.0/UDP nm;branch=foo;rport=26810;received=224.14.252.180
From: <sip:nm@nm>;tag=root
To: <sip:nm2@nm2>;tag=9165bbbe
Call-ID: 50000
CSeq: 42 OPTIONS
Allow: ACK,INVITE,CANCEL,BYE,REFER,SUBSCRIBE,NOTIFY,PRACK,INFO,UPDATE,OPTIONS
Content-Length: 0

RapidLogic httpd1.1

HTTP/1.1 401 Not Authorized
Server: Rapid Logic/1.1
MIME-version: 1.0
Date: Thu Sep 12 04:39:42 2024 GMT
Content-Type: text/html
Content-Length: 107
WWW-Authenticate: Basic realm="VOIP Gateway"