Mobile communication terminal and its set data changing method

A mobile communication terminal, a technology for setting data, applied in the direction of telephone communication, wireless communication, branch equipment, etc.

Inactive Publication Date: 2005-11-23
FUJITSU TOSHIBA MOBILE COMM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, it cannot be said that the protection function of simple NAM programming and the data set set by it is sufficient

Method used

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  • Mobile communication terminal and its set data changing method
  • Mobile communication terminal and its set data changing method
  • Mobile communication terminal and its set data changing method

Examples

Experimental program
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specific Embodiment approach

[0033] Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing the configuration of a mobile phone terminal in one embodiment of the present invention.

[0034] However, in the storage device 13, the figure 2 Shown are control data sets 20 and setting data sets 30 which determine the basic operation of the terminal.

[0035] Wherein in the control data group 20, it contains the electronic serial number (ESN) 21 of 32Bit (bit) inherently assigned to this terminal, the auxiliary lock code 22, the Subsidy Lock Status (auxiliary lock status) 23, and the auxiliary lock code 24 once, And a Subsidy LockStatus (a secondary lock status) 25.

[0036] On the other hand, in the setting data group 30, it includes the authentication key (A-Key: Authentication-key) 31, the number allocation module programming (NAM programming) and the setting data group 32 set by it, wherein in the NAM The programming 32 i...

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Abstract

The invention is able to prevent the 'one-time subsidy lock' from being easily unlocked to more improve the guard function against the 'simple NAM pro'. For temporarily unlocking the one-time subsidy lock with respect to the simple NAM pro usable for registering telephone numbers, a security code composed of SPC is inputted to a terminal, to enable it to register the one-time subsidy lock, and the one-time subsidy lock is registered in this condition. The security code for enabling the registration of the one-time subsidy lock uses SPC used as the subsidy lock code.

Description

technical field [0001] The present invention relates to mobile communication terminals such as cellular phones and portable information terminals, and methods for changing setting data thereof. Background technique [0002] Generally, an authentication key (A-Key: Authentication-key (A-key: authentication key)) and a number assignment module programming (NAM: Number Assignment Modules Programming) (hereinafter referred to as programming for the NAM) and the data set by it are registered in the memory within the mobile communication terminal. These setting data sets are necessary for the carrier to properly manage the use of the mobile communication terminal. If the user changes these setting data sets arbitrarily after signing the contract, proper service cannot be guaranteed. [0003] Therefore, in the conventional mobile communication terminal, a protection called "Subsidy Lock" is added to the above-mentioned setting data group, so that the setting data cannot be changed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/725H04M1/00H04M1/274H04M1/66H04M1/727H04W88/02
CPCH04M1/66H04M1/727H04W88/02H04W12/06H04W12/08H04W12/71
Inventor 高桥真也阪东良仁
Owner FUJITSU TOSHIBA MOBILE COMM LTD
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