JPS62249596A - Multifunction digital telephone system - Google Patents

Abstract

PURPOSE:To easily modify the function fo a digital telephone system by converting a telephone control program stored in a RAM provided in a telephone set to an object program by a C language compiler and executing the object program. CONSTITUTION:An exechange 1 transmits a start signal to a telephone set through a digital transmission line 11, and further reads out the telephone control program PG from a file system 4, transmits it, then transmits an end signal. When a telephone set 5 receives telephone control PG, stores it in a RAM 6, and after receiving the end signal, converts the telephone control PG described in C language to the object PG to be operated on the telephone by means of a C-language compiler, and executes the resulting program. Thereafter, the telephone set 5 transmits a ready signal to the exchange 1 and completes the initialization. After the initialization, the control is transferred to a line control module 3 from an initialization module 2 in the exchange 1. In case function modification is required for the digital telephone system the modification can easily be executed by modifying the telephone control PG held by the system 4, and letting a telephone set read it.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a digital multifunction telephone system.

[Conventional technology]

Conventionally, in this type of telephone system, the interface between the exchange and the telephone was fixed, and in order to make the telephone system multifunctional, the exchange and the telephone were independently capable of multifunction while strictly adhering to each other's interface. was conducting transformation. In addition, in making the telephone system more multifunctional,
If multi-functionality could not be achieved by modifying only the switchboard, measures such as modifying the telephone equipment were taken.

[Problem that the invention seeks to solve]

In the conventional digital multi-function telephone system described above, the interface between the telephone and the exchange and the control program inside the telephone are fixed, so when expanding functions, it is necessary to do so within the range of the above interface, and the reason on the side of the exchange is When the interface between phones changes.

Alternatively, if a function that cannot be implemented on the telephone side is added to the exchange, it becomes necessary to take measures such as modifying the telephone or replacing it with a telephone that is compatible with the change on the exchange side.
There are drawbacks that modification costs are high, expansion of one function is limited by the performance of the telephone, and there are telephones that support each function.

[Means for solving problems]

The digital multifunction telephone system of the present invention includes a file system holding a telephone control program written in C language, and an initial setting module for reading the telephone control program held in the file system and writing it to the telephone. Intersect with 4! ! ! ! A random access memory, a C language compiler, and a telephone control program received from the exchange are stored in the random access memory, and the telephone control program stored in this random access memory is converted into an object program by the C language compiler. The telephone is characterized in that the telephone has means for causing and executing.

Therefore, if it is necessary to change the functions of the digital telephone system, this can be easily accomplished by changing the telephone control program held in the file system and having the telephone read it.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the digital multifunction telephone system of the present invention, and FIG. 2 is a diagram showing a communication procedure between the telephone @5 and the exchange 1 in FIG.

The telephone 5 internally includes a random access memory 6, a C language compiler 7, and an input/output device driver 10 having a predetermined interface. is included. Digital transmission line 11
An exchange 1 connected to a telephone 5 by the above has an initial setting module 2 and a line control module 3, and is attached with a file system 4 holding a telephone control program written in C language.

Next, the operation of this embodiment will be explained with reference to FIG. The exchange 1 sends a start signal 12 to the telephone 5 via the digital transmission line 11, and further reads out a telephone control program 13 from the file system 4 and sends it out. When the sending of the telephone control program 13 is completed, the exchange 1 sends out a program sending end signal 14. On the other hand, telephone 5
When receiving the telephone control program 13 from the exchange 1, the telephone control program 13 is stored in the random access memory 6, and after receiving the program sending end signal 14, the program written in C language stored in the random access memory 6 is executed. The telephone control program 13 is converted into a C language compiler 7.
It is converted into an object program that runs on the telephone In2 and executed. After executing the telephone control program 13, the telephone 5 exchanges the ready signal 15 4m! 1, and the initial settings are completed. After the initial setting, control is transferred from the initial setting module 2 to the line control module 3 in the exchange 1. Thereafter, the line control mode is maintained until the initial setting mode is reached, the telephone function is activated, and the exchange transmission data 1θ- and the telephone transmission data 17 are exchanged via the digital transmission line 11, and the system operates as a digital telephone system. . The digit key 8 is scanned by the telephone control program 13 via the input/output device driver IO, and the detected digit key 8 is sent out as the telephone call data 17.

〔Effect of the invention〕

As explained above, the present invention provides a telephone with a random access memory and a C language compiler, and a C language compiler from an exchange.
By transmitting a telephone control program written in a language and having the telephone read and execute the telephone control program, the following effects can be obtained.

■ Even if a function change occurs on the exchange side, it is possible to easily change the function by changing only the telephone control program held on the exchange side, without changing the program on the telephone side. etc., and the cost can be reduced.

- Since the telephone control program is in C language, it is possible to easily connect a telephone with an input/output device driver that has a common interface with a C language compiler.

■ The telephone control program can be managed as a common program that does not depend on the telephone hardware.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the digital multifunctional telephone system of the present invention, and FIG. 2 is a diagram showing a communication procedure between the telephone 5 and the exchange 1 shown in FIG. 81. ■...Exchange machine, 2...Initial setting module, 3
...Line control module, 4.File system, 5.Telephone. 6... Random access memory, 7... C language compiler, 8... Digit key,
9... Handset, 10... Input/output device driver. DESCRIPTION OF SYMBOLS 11...Digital transmission line, 12...Start signal, 13...Telephone control program, I4...Program sending end signal, 15...Ready signal, IB...Exchange transmission data, 17...・Telephone outgoing data.

Claims (1)

[Claims] In a digital telephone system, there is provided a file system holding a telephone control program written in C language, and an initial setting for reading and writing the telephone control program held in the file system to the telephone. The exchange has a module, a random access memory, a C language compiler, and stores a telephone control program received from the exchange in the random access memory, and converts the telephone control program stored in the random access memory into an object by the C language compiler. A digital multifunction telephone system characterized in that the telephone has means for converting and executing a program.