Patent ID: 7412529
Filing Date: 2008-08-12
Classification: H04L

Abstract:
1. A method for processing session information of a client performing communication with an arbitrary server in an Internet protocol voice call system using a session initiation protocol, comprising steps of: generating an arbitrary message for a call processing request to the server; generating a SIP (Session Initiation Protocol) Session Protocol header as an Open systems Interconnection (OSI) fifth layer session including a session identifier and a flag, for indicating a start and an end of a session, and being located between an SIP payload and a UDP (User Datagram Protocol) header, by corresponding to a kind of the generated message; attaching the generated SIP Session Protocol header to the message, and transmitting the message to the server; parsing the SIP Session Protocol header when the arbitrary message and the SIP Session Protocol header attached to the message are received from the server, and extracting the session identifier and the flag from the SIP Session Protocol header; and performing a session processing according to the extracted flag and the session identifier.