JPH01128694A - Isdn integrated services digital network exchange - Google Patents

Abstract

PURPOSE:To attain an access from a handy terminal by providing a means for receiving a dial code sound and the means to analyze the received dial code sound, convert it into an access means to apply to the access means to a communication network held by a terminal, and to allow access. CONSTITUTION:When an operator operates a handy terminal(HT) 12 in order to transmit a dial code to a microcomputer (CPU) 1, a push-button dialing signal sound 13 is sent, and this signal sound 13 is transmitted to the CPU 1 through the channel of a receiver R of a handset 8 - a push-button receiver(PBR) 10 - a parallel interface(PIA) 2. Since the program of the CPU 1 is programmed so that the access to a communication system can be the same whether dial information is transmitted with a key (KN) operation or through the PBR 10, the access can be allowed to the communication system.

Description

[Detailed description of the invention] [Industrial application field] TECHNICAL FIELD The present invention relates to an exchange for a communication system, and features a special feature.

It relates to an integrated services digital network (ISDN) switch.

[Conventional technology]

In current communication networks, an integrated digital network (IDN), in which dedicated networks providing various services such as facsimile and data communications are integrated onto a single digital transmission path, and a conventional analog telephone network coexist.

Therefore, terminal equipment includes both analog and digital types, which makes communication difficult. For this reason, plans are being made to construct an integrated services digital network (ISDN). This I5DN has the advantage of being able to provide a variety of services, and is a network in which most of the terminal equipment is digital.

In addition, as an example of terminal equipment used in l5DN, see the collection of papers from the 70th anniversary of the founding of the Institute of Electronics, Information and Communication Engineers (1986), pp. 10-547, paper A.
There is 2469 "Prototype of ISDN composite communication terminal".

[Problem that the invention seeks to solve]

The l5DK is a communication system with high utility value, but from the user's point of view, there is a problem in that the various terminal devices that have been used in the past cannot be used, and new terminal devices that are compatible with the l5DH must be introduced. For example, the 15DH switch currently being considered is a dial code tone (e.g. push button dial signal tone) that comes in from the handset.
It is not possible to receive and access the dial code tone, or rather, no consideration is given to such functions at all. Therefore, there is a problem in that it is impossible to access the 15DK from a conventionally used terminal device that emits a dial code tone (hereinafter referred to as a handy terminal).

An object of the present invention is to provide an 15DH exchange that can be accessed from a handy terminal.

[Means for solving problems]

The above purpose is implemented by providing a means for receiving a dial code tone on the terminal side of the L5DH exchange, and analyzing the received dial code tone and converting it into an access means that is compatible with the access means to the communication network that the terminal has. This can be achieved by providing a means to do so.

[Effect]

When a dial code tone is emitted from the handy terminal, the dial code tone is received by the L5DH exchange, and the received dial information is converted and executed into a means for accessing the communication system originally assigned to the terminal. Ru.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

The figure is a block diagram of the main parts of the terminal side in the 15DH exchange. Figure smells. K, -K are keys for the operator to instruct the microprocessor (CPU) 1 to control (for example, to instruct a dial number), and Lo" Lm is a key for the microprocessor (CPU) 1 to instruct the operator to control the result (for example, to dial a number). A light-emitting diode for displaying information (e.g., indicating that preparations for receiving information are complete).

2 is a well-known parallel interface (PTI) for transmitting parallel signals from the key zN, light emitting diode L, etc. to the microprocessor 1 and vice versa; 3 is for converting the serial signal coming from the demultiplexer 6 into a parallel signal. A well-known serial interface (S/, (), 4) is used to convert the parallel signal from the microprocessor (cpv) 1 into a serial signal and send it to the multiplexer 6. A well-known memory (M), 11 is a well-known system bus, and 6 is a transmitter and receiver (T/x).For example, two audio channels (B11 This is a multiplexer/demultiplexer that has the functions of both a demultiplexer for separating the control channel (.Z+2) and one control channel (D) and a multiplexer for inverse conversion. A well-known CODEC (CODEC) 9 for performing the inverse conversion is a sounder (S).The present embodiment further includes a handset 8 for receiving a push-button dial signal tone 13 from a handy terminal (HT) 12; , a pushbutton receiver (PBR) 9 is newly provided which decodes the pushbutton dial signal tone received by the handset 8 into a dial code tone and transmits it to the microprocessor 1 via the parallel interface 2° bus 11.

Next, the access procedure from the handy terminal in the 15DK exchange having the above-described configuration will be explained, but for comparison, the access procedure in the conventional exchange will be explained first.

Specifically, when the operator presses the middle key (for example, go) to make a call, the microprocessor (CPU) 1 recognizes this and sends a message via the parallel interface (Pl, 4) 2 - counter control 5) 9 - handset 8. A dial tone is sent through the path of the telephone T. The operator listens to this and operates a key (for example, 1 to 1) corresponding to the dial code to transmit this to the microprocessor (CPU) 1. microprocessor (
cpv ) 1 uses this information to connect the serial interface (5IA) 3 - multiplexer/demultiplexer (M/D) 9 - transmitter/receiver (T/R
) 5-wire route to the communication system.

The handy terminal (gr) in the above embodiment of the present invention
) Access from 12 is accomplished as follows. The operator presses a key (for example, K.) to make a call,
The operation until you hear the dial tone is the same as before. The operator inputs the dial code into the microprocessor (CPU) 1
When K and the handy terminal (yr) 12 are operated in a well-known manner, a push button dial signal sound 13 is heard.
is transmitted from the handset R of the handset 8 to the pushbutton receiver (PBR) 10 to the parallel interface (
Microprocessor (CPU) via PIA) 2 route
Passed on to 1. Microprocessor (CP+7) 1
The program of 10 is a push-button receiver (PER) even if the dial information is transmitted by key (Xs) operation.
Since access to one communication system is made to be the same even if the information is transmitted via the same communication system, the communication system is accessed in the same manner as before.

In this embodiment, a method using a push button dial signal sound has been described, but the present invention is not limited to this, and other sounds (for example) can be used.

It goes without saying that if you want to use frequency-modulated sound, you can use another receiver suitable for the purpose instead of the push-button receiver PBR.

〔Effect of the invention〕

According to the present invention, since it becomes possible to access the 15DN communication network from a handy terminal through sound coupling, which was previously impossible, there is an advantage that the operator does not need to check whether the terminal is capable of accessing through sound coupling. Yes.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating a main part of a terminal side in an ISDN exchange according to an embodiment of the present invention. 1......Microprocessor 2...
・・・・・・−・Parallel interface 6・−・・
......Serial interface 4...
...Memory 5 ......Transmitter/Receiver 6
・・・・・・・・・・・・Multiplexer/Demultiplexer 7・・・・・・・・・・・・ Codec 8・・輯・・川－φHandset 9・・・・・・・・・− ... Sounder 10 ......Push button receiver 11 ...
・・・・・・・・ ノ(S12・・・・・・・Handy terminal 13・・・・
...Push button signal sound agent Patent attorney Ogawa
Katsuo

Claims (1)

[Claims] 1. The terminal side is provided with means for receiving a dial code tone and means for analyzing the received dial code tone and converting it into an access means compatible with the means for accessing a communication network possessed by the terminal. An ISDN exchange featuring: