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Mobile communications system and communications control method and mobile terminal device used therefor, control method thereof, and recording medium

  • US 20030050076A1
  • Filed: 08/20/2002
  • Published: 03/13/2003
  • Est. Priority Date: 08/22/2001
  • Status: Active Grant
First Claim
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1. A mobile communications system which comprises a mobile terminal device and a switching center having a circuit switched domain and packet switched domain and carrying out location management of said mobile terminal device and establishes a radio connection (hereinafter referred to as an RRC (Radio Resource Control) connection) for communications with said mobile terminal device in response to an attach process or location registration process on said mobile terminal device, wherein messages are transmitted and received between said mobile terminal device and each of said circuit switched domain and said packet switched domain through said RRC connection for said attach process or said location registration process.

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