OPTIONS sip:192.168.1.20 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.9:5060;branch=z9hG4bK515e4ddd
Max-Forwards: 70
To: <sip:192.168.1.20>
CSeq: 102 OPTIONS
User-Agent: FPBX-13.0.188.8(11.23.1)
Date: Wed, 19 Oct 2016 13:29:41 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
Content-Length: 0
---
SIP/2.0 400 Bad Request
CSeq: 102 OPTIONS
To: <sip:192.168.1.20>
Via: SIP/2.0/UDP 192.168.1.9:5060;branch=z9hG4bK515e4ddd
Content-Length: 0
<------------->
--- (7 headers 0 lines) ---
OPTIONS sip:192.168.1.20 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.9:5060;branch=z9hG4bK6f2fae4e
Max-Forwards: 70
To: <sip:192.168.1.20>
CSeq: 102 OPTIONS
User-Agent: FPBX-13.0.188.8(11.23.1)
Date: Wed, 19 Oct 2016 13:29:41 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
Content-Length: 0
---
SIP/2.0 400 Bad Request
CSeq: 102 OPTIONS
To: <sip:192.168.1.20>
Via: SIP/2.0/UDP 192.168.1.9:5060;branch=z9hG4bK6f2fae4e
Content-Length: 0