Message transmission during packet service termination

摘要

Disclosed are a mobile telecommunication system and method which can improve the call connection rate of a mobile station and the reliability of a session establishment procedure. The session termination method for a mobile telecommunication system comprises checking base station information included in a connection release message received from a base station in order to determine a cause for the connection release message and locally terminating currently established sessions for a packet service based on the result of the determination.