[Serusers] Regarding OPTIONS

hello every one, I am facing some problem in the OPTIONS method. I am getting "404 not found" response. I wanted to query the server for its capabilities. I wanted to know which are the methods it supports from the 200OK response of my OPTIONS method. My packet was as below OPTIONS sip:192.168.1.9 SIP/2.0 Via: sip/2.0/UDP 192.168.1.9:5060 Max-Forwards: 70 To: <sip:192.168.1.9> From: <sip:geetha@192.168.1.21>;tag=1047012665620 Call-Id: 82963748691a049dc5aadf81b162c894(a)192.168.1.9 CSeq: 1 OPTIONS Contact: <sip:192.168.1.9:5060> Accept: application/sdp Content-Length: 0 Can some one tell me How SER works for OPTIONS method and why am i getting that "404 not found" response.Is there some problem with my packet? Thanks Geetha -- ******************************************************************** eRiva provides IT Solutions & Services to companies worldwide. Our State of the Art Research & Development Centers provides Innovative Solutions to global customers. ******************************************************************** --