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Test facility and test method for the continuous monitoring of the services in GSM networks

  • US 6,430,410 B1
  • Filed: 07/13/1999
  • Issued: 08/06/2002
  • Est. Priority Date: 07/16/1998
  • Status: Expired due to Term
First Claim
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1. A test facility for the monitoring of the communication circuits including the air interfaces and the gateways in a mobile communication network consisting of network switched systems, whose subscriber mobile stations are equipped with a Subscriber Identification Module (SIM) identifying the subscriber whose data is stored at least partly in at least one data bank of a switching system withone mobile station which is equipped with an adapter module in place of the SIM, which can selectively be connected to each one of the multitude of SIMs so that each of the connected SIMs is emulated in the mobile station equipped with the adapter module, a device for holding the SIMs and a control unit which controls the selection and connection of the SIMs to the mobile station containing the adapter module, whereinthe device for holding the SIMs is designed as a central SIM server, the control unit is located centrally, different test modules are provided spatially distributed containing mobile stations that are at least partially equipped with adapter modules, and SIM server, control unit and test modules are connected via a data network connecting the switching systems.

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