sip72 229 Bytes Edit Raw Blame History Permalink 1 2 3 4 5 6 7 8 OPTIONS sip:user@company.com SIP/2.0 To: sip:user@company.com From: "caller"<sip:caller@example.com> Call-ID: 1234abcd@10.0.0.1 CSeq: 1 OPTIONS Via: SIP/2.0/UDP 135.180.130.133 Warning: no-LWS-between-display-name-and-<
