Access controlled terminal and method for rendering communicatio

Details Access controlled terminal and method for rendering communicatio Access controlled terminal and method for rendering communicatio

1995-09-15

1999-08-17

Cumming, William

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

379 9101, 379153, 455 382, H04Q 732

Patent

active

059407735

ABSTRACT:
An arrangement for rendering services such as for example telephone communication, data communication and so on comprising a terminal unit and an access unit, the terminal unit comprising a terminal-unit-identification code (PIN.sub.t) which is stored in the terminal unit and the access unit comprising a first access identification code (IMSI), terminal unit as well as an access unit being lockable. In the terminal unit are furthermore first access identification codes for a given number of access units (SIM) stored wherein upon starting up of the device involving contact between terminal unit and actual access unit (SIM) with a certain access unit identification code (IMSI.sub.c), identification code (IMSI.sub.c) of the access unit is compared to in the terminal unit stored first access identification code(s) (IMSI.sub.s) in the terminal unit, correspondence between stored access identification code (IMSI.sub.s) and actual access unit identification code (IMSI.sub.c) leading to locking up of the terminal unit whereas non-correspondence between stored and actual access unit identification codes (IMSI.sub.s .noteq.IMSI.sub.c) respectively at least the terminal unit identification code (PIN.sub.t) must be given.

REFERENCES:
patent: 4815123 (1989-03-01), McGough
patent: 5203014 (1993-04-01), Wagai et al.
patent: 5266782 (1993-11-01), Alanara et al.

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