Hi,
rite now i am a student and i am working on the video conferencing project in that i have to write the call manager part using sip and rtp.I dont know how to write the server and client model using sip message.CAn anyone help me out to tell me what to do..My task is:
1. write the code for client and server.
2.client should type the sip url and accordingly it should connect to that server with that url specified.
3. after the connection the sdp negotiation part is to be implement.

I will be very thankful to you if you help me out.

Regards,
Ankur

Suggestion:

1. Choose an implementation language (for example, C/C++)
2. Choose your platform (for example, Windows)
3. Decide whether it's going to be GUI or command-line
4. Write a sample client that just lets the user type in the URL (no functionality yet)
5. Verify that it works

Then...

6. Do some reading on network programs in general, with an eye to how it might relate to the SIP protocol

'Hope that helps .. PSM

PS:
Here are some libraries/code that might be of use to you:
http://swik.net/SIP+Programming

I would also look at "Beej's guide to network programming" for examples of both TCP and UDP programs.

thanks for the advice..I have chosse the c language and linux environment.now what i want to do is that from the client side i just want the output that client should write......./client.out port no of client and sip address then the proxy server should respond to that sip address by sending the port no and the ip address of that sip address....r u getting it what i want to say....if yess then plz help me out...I want the code for that ....

thanks in advance
ankur.

If this is still relevent -
I'm reading now about SIP in general and i would be glad to code together.