[SIPForum-discussion] Regarding SIP messages!!!

[Mahesh Bhujle]

Dear All,
 
Could some one please help me out in understanding the sub-types of the SIP messages like initial INVITE, mid-INVITE etc. and which type of messages are used by which device.
 
Also please guide me with the clear concept of SDP.
 
Waiting for your reply.
 Thanks and Regards, Mahesh K. Bhujle Technical Consultant Velocis Systems Pvt. Ltd.Mobile    : +91-9833002938Email       : maheshbhujle at hotmail.com       
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