DE3223800C2 - Method for a microprocessor-controlled telephone station with keyboard and programming lock - Google Patents

Description

The invention relates to a method for a microprocessor-controlled telephone station with a keyboard, whereby the keyboard keys for the actual participant selection, special keys for a name and Program selection and other subscriber services, a programming button and one for at least three switch positions designed keypad lock contains, wherein z. B. the first switch position of the keypad lock Operation of the keyboard is prevented or restricted, and the programming or reprogramming continues of special keys by pressing the corresponding special key and then selecting an address or identification occurs when the programming button is pressed continuously during both processes.

The aforementioned telephone stations have in a generally known manner for the transmission of the dialing information and the programming of data to be saved a twelve-part keypad. In addition, special keys are assigned to this keypad, which can be used as name keys or program keys and which can be switched in two levels with the aid of a programming button. With the help of the programming button and the keypad can be used in the name or program memory assigned to the special keys Information is saved or information that has already been saved is overwritten. If the aforementioned telephone stations are to be usable only for certain subscribers, they contain also in the keyboard or separately next to it Telephone lock, which only allows the key holder to operate the station without restrictions.

The object of the invention is now to be Deliberate or unintentional deletion or exceeding of

to prevent information assigned to the special keys from being used by unauthorized persons.

This is achieved in that with simultaneous recognition by the microprocessor first switch position of the keypad lock, the status »programming key pressed« and actuation any special key a programming lock becomes effective.

This has the advantage that in the corresponding switch position of the keyboard lock all buttons including the programming button depending on the additionally assigned to the first switch position Restriction of authorization can be fully functional without changing the address or program can be made.

The method according to the invention is explained in more detail below.

In the case of a subscriber station designed as described above, the first switch position is, for example of the telephone lock no authorization restriction for outgoing dialing, an authorization restriction for international dialing (00 lock), a Authorization restriction for dialing outside line (O-lock) or a total operating lock for outgoing dialing assigned.

In any case, in this switch position, the input Deletion or modification of the addresses, programs and subscriber services assigned to the special keys be prevented.

It is assumed that an entry or change of addresses, programs or subscriber services by pressing the programming button and then briefly pressing the corresponding special key and then entering the identifier for an address Program or a participant service takes place with the help of the keyboard part for the participant selection. the The programming button remains pressed until the ID has been entered completely.

It is also assumed that the microprocessor of the telephone station is the operation of the entire Keyboard monitors and stores the current status and that also the current one Switch position of the telephone lock is saved.

In the first case, there should be no authorization restriction for a third-party user of the telephone station in the case of outgoing dialing be provided in the first switch position of the telephone lock, then the entire Keyboard usable for this user including the programming key. The programming button is used to make the second level of the special keys accessible to the user (short press the programming key and then pressing the special key). However, with the help of the microprocessor the status »programming key pressed« and during this status a special key is pressed is recognized, a programming lock is automatically activated (electrical locking of the keyboard). This makes it impossible for the telephone lock to enter, delete or Change the information assigned to the special keys.

The same goes for the second and third cases, only that the first switch position of the Teiefon lock is also an operating restriction (00 lock, O lock) is assigned for the external user.

In the fourth case, when the telephone station is completely blocked, no programming block is necessary, since in

3 4

In this case, the entire keyboard can initially be accessed by third-party users. Particularly

The automatic switch position of the telephone lock is advantageous in that with this method none

Trisch verriegeil additional costs arise because of a microprocessor

From the foregoing it can be seen that in every case including the necessary storage space

the method according to the invention in a simple manner. ze already exists and there is also a telephone lock

is possible, built into one of the aforementioned telephone stations for operating restrictions isL For the

a protection against willful or unintentional case, that there are no operating restrictions for third-party

Changing, entering or deleting of the special keys user should be provided, the phone lock is under

assigned addresses, programs and subscribers - provided for a fee reset.

Claims (2)

Patent claims: 1. Method for a microprocessor-controlled telephone station with keyboard, the keyboard Keys for the actual participant selection, special keys for a name and program selection as well as other subscriber services, a programming button and one designed for at least three switch positions Includes keypad lock, z. B. the first switch position of the keypad lock controls the operation prevents or restricts the keyboard, and continues to program or reprogram Special keys by pressing the corresponding special key and then selecting an address or identification occurs when the programming button is constantly pressed during both processes, thereby characterized in that with simultaneous recognition by the microprocessor first switch position of the keypad lock, the status »programming key pressed« and the A programming lock becomes effective by pressing any special key. 2. The method according to claim 1, characterized in that the programming lock at simultaneous recognition of the first switch position, the status »programming button pressed« and pressing any special key also takes effect when in the first switch position The keyboard lock does not restrict the operation of the keyboard.