[Serusers] question regarding sip protocol

Sabatella, Michael Michael.Sabatella at ipc.com
Wed Oct 21 16:18:33 CEST 2009

I am new to the sip protocol.   I have been doing packet traces to understand how the protocol works.  I am using the ser sip proxy version  0.9.6.   I notice that once my phone registers with a proxy I get a 200 ok.

Every 20 seconds after that the client sends a packet to the proxy. It is an Request: OPTIONS packet.  My proxy responds with a Status:404 Not found.

I tried to do some research on this but could not find anything useful.    Does this response of a 404 matter?    How can you fix this?   I have read that the client does this as an application level ping to make sure the proxy is up.

If I have 100s of people registering that is a lot of extra traffic.   Is there a way to stop this options query or have the proxy respond properly?


Network Services Engineer

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