Telecommunications system
DCFirst Claim
1. A method of communicating between a remote station and a GSM-compatible cellular telephone capable of two-way voice communication, comprising:
- selectively transmitting from the remote station to the cellular telephone an SMS text message containing text;
selectively transmitting from the remote station to the cellular telephone an SMS write command message containing a write command and associated write data, the cellular telephone including a removably coupled SIM card;
the cellular telephone detecting an incoming communication as an incoming SMS write command message or an incoming SMS text message; and
in the event the incoming communication is an SMS text message, displaying at least a portion of the text contained in the incoming SMS text message on a display associated with the cellular telephone; and
in the event the incoming communication is an SMS write command message, the SIM card decoding the write command contained in the SMS write command message.
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Accused Products
Abstract
In a telecommunications system such as a global mobile telephone network in which each subscriber unit includes a Subscriber Identity Module (SIM card), each SIM card has fixed memory locations, to which data can be addressed over the air. Some of the locations can not be overwritten from the subscriber unit but can be accessed therefrom on the entry of short simple codes, each associated with one of the locations. Further fixed memory locations can be read over the air only when the subscriber enters a personal identification number. Locking control files are used to control read/write access to the locations respectively.
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Citations
20 Claims
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1. A method of communicating between a remote station and a GSM-compatible cellular telephone capable of two-way voice communication, comprising:
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selectively transmitting from the remote station to the cellular telephone an SMS text message containing text; selectively transmitting from the remote station to the cellular telephone an SMS write command message containing a write command and associated write data, the cellular telephone including a removably coupled SIM card; the cellular telephone detecting an incoming communication as an incoming SMS write command message or an incoming SMS text message; and in the event the incoming communication is an SMS text message, displaying at least a portion of the text contained in the incoming SMS text message on a display associated with the cellular telephone; and in the event the incoming communication is an SMS write command message, the SIM card decoding the write command contained in the SMS write command message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A GSM-compatible telecommunications network for communicating with a plurality of cellular telephones, comprising:
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at least one cellular telephone containing a removably coupled SIM card; and at least one host station which selectively transmits an SMS text message containing text, or an SMS write command message containing a write command and associated write data, to the at least one cellular telephone; wherein the at least one cellular telephone detects an incoming communication as an incoming SMS write command message or as an incoming SMS text message; and wherein, in the event the incoming communication is an incoming SMS text message, a display associated with the at least one cellular telephone displays at least a portion of the text contained in the incoming SMS text message; and wherein, in the event the incoming communication is an incoming SMS write command message, the SIM card decodes the write command contained in the incoming SMS write command message. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A telecommunications network for communicating with a plurality of cellular telephones, comprising:
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a cellular telephone capable of two-way voice communication; and at least one remote station which selectively transmits to the cellular telephone a message of a first message type or a second message type, wherein the first message type is formatted to contain text to be displayed on a display of the cellular telephone and the second message type is formatted to contain a command and data associated with the command, wherein the command indicates to the cellular telephone to execute at least one instruction for performing an operation other than to support the displaying of text; wherein the cellular telephone distinguishes the message as being of either the first message type or the second message type, and, if the message is of the first message type, displaying at least a portion of the text on the display of the cellular telephone, and automatically, if the message is of the second message type, executing the at least one instruction; wherein the message is wirelessly carried from the remote station to the cellular telephone using a common short message service protocol over a common short message service channel, regardless of whether the message is of the first or the second message type; wherein the remote station is configured to transmit messages of the first and the second message types, and the cellular telephone is configured to receive and process messages of the first and the second message types; and wherein remotely located information is downloaded to the cellular telephone. - View Dependent Claims (18, 19, 20)
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Specification