SIP/2.0 200 OK
Via: SIP/2.0/UDP nm;rport=26810;received=224.203.43.148;branch=foo
Call-ID: 50000
From: <sip:nm@nm>;tag=root
To: <sip:nm2@nm2>;tag=foo
CSeq: 42 OPTIONS
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, OPTIONS
Accept: application/sdp, application/simple-message-summary, message/sipfrag;version=2.0
Supported: replaces, 100rel, timer, norefersub
Allow-Events: message-summary, refer
User-Agent: TP-Link SIP Stack V1.0.0
Content-Type: application/sdp
Content-Length:   389

v=0
o=- 3941670960 3941670960 IN IP4 154.62.151.186
s=pjmedia
c=IN IP4 154.62.151.186
t=0 0
m=audio 60000 RTP/AVP 0 8 9 2 110 18 96
a=rtcp:60001 IN IP4 154.62.151.186
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/16000
a=rtpmap:2 G726-32/8000
a=rtpmap:110 G726-32/8000
a=rtpmap:18 G729/8000
a=sendrecv
a=ptime:0
a=rtpmap:96 telephone-event/8000
a=fmtp:96 0-15

HTTP/1.1 400 Bad Request
Content-Length: 0
Date: Mon, 23 Dec 2024 13:43:16 GMT
X-Frame-Options: sameorigin
Content-Security-Policy: frame-ancestors 'self'; script-src 'self' 'unsafe-eval' 'unsafe-inline'; object-src 'self'
Strict-Transport-Security: max-age=31536000; includeSubDomains
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Referrer-Policy: no-referrer
permissions-policy: fullscreen 'none'