JPS61146055A - Electronic exchange - Google Patents

Abstract

PURPOSE:To always send out a voice to a subscriber's circuit from the head of a talkie by reading out a voice data from a ROM in which the voice data has been stored, when it is instructed to send out a talkie sound to the subscriber's circuit. CONSTITUTION:When an output of a talkie sound is instructed to a telephone from a central control equipment 2, an address of a voice data which has been stored in a data ROM3 is set to each address counter 41-4n, respectively, by an address setting circuit 5, at every channel for sending out a voice data of each talkie sound. Subsequently, a load timing is given like a time division to the counters 41-4n from a load timing generating circuit 6, and an address signal of each channel is sent out successively to the ROM3. From the ROM3, a voice data of each channel is outputted in parallel, send out to a highway 9 through a shift register 7, passes through a serial-parallel converting circuit 8 and sent out to the respective telephone sets 10.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a time-sharing switching type electronic switching system capable of supplying a plurality of talky tones.

-) Prior Art Conventionally, in order not to give the recipient a sense of discomfort, a talky sound with a cue position has been supplied. For example, Utility Application No. 59-242133. There is a number.

According to this invention, it is possible to supply the same talkie tone almost simultaneously to multiple telephones, but it is possible to supply the same talkie tone to multiple telephones at the same time. Assigning a network to a network reduces the number of lines to which telephones and other miscellaneous trunk circuits are connected, leading to a decline in the functionality of the exchange.

(c) Problems to be Solved by the Invention The present invention has been devised in view of the above-mentioned points. The purpose of this system is to connect a large number of talky tones, including a plurality of tones, to each subscriber's line to which a connection instruction has been given in a state where the cue has been determined.

B.) Means for Solving Problems The present invention comprises a data ROM storing a plurality of voices as PCM data, a plurality of address counters for reading out the voice data of the data ROM, and a plurality of address counters in the data ROM. This is a time-division switching type electronic exchange having means for writing the address of desired voice data and means for transmitting the voice data from the data ROM to a communication path.

(E) Effect When output of talkie tone is instructed to multiple subscriber lines,
The address of each audio data in the data ROM in which the audio data is stored is set in each address counter, each designated audio data is read out by each address counter, and each read audio data is assigned to each address to be connected. It is sent to the subscriber line.

(f) Embodiment FIG. 1 is a schematic diagram of an embodiment of an electronic exchange according to the present invention. (1) is a communication path device that performs switching operations between each line;
2) is the central control unit that controls the entire exchange, and (3) is the data R where multiple voices are stored as PCM data.
OM, (41) (42) - (4rL) (is an address counter for selecting audio data for each channel,
Steps are made within the length of each audio data. Furthermore, as many talky sounds as the number of address counters (41), (42), . . . (48) can be output simultaneously. (5) is controlled by the central controller (2), and is controlled by the address counter (4).
1) (4z)... (remaining 4) is an address setting circuit that sets the address of the audio data in the data ROM (3) corresponding to the channel to which the audio data is to be sent.

(6) In order to sequentially send out the audio data from the data ROM (31), the timing for sending out the counted address is determined by the address counter (41), (42)...
(4 shares), (7) is a shift register that serially outputs the audio data output in parallel from the data ROM (31) to the data highway (9), (8) is from the shift register. This is a serial-to-parallel conversion circuit that converts audio data sent serially into parallel data.

(10) (1α...0■ are telephones connected to this exchange.

In an electronic exchange with such a configuration, a central control unit (2
) to address counters (41) (42)... (4) when the output of talkie tone is instructed to the telephones within the number.
Each address setting circuit (5) causes each address counter (41
) (42) ... (APL) respectively data ROM131
The address of the audio data stored in is set.

Load timing is given from the load timing generation circuit (6) to each of the address counters (41), (42), . A clock signal for incrementing is applied to each of the address counters (41), (42), etc. every 125 μs from a clock generator (not shown),
4+)(42)...(4l), steps are repeated within the length range of each audio data. Audio data for each channel is output in parallel from the data ROM (3) in response to an address signal, and serially sent to the data highway (9) via a shift register (7).

Here, the address counters (41) (42)...(
If the transmission capacity of the data highway (9) is higher than the number of voice channels (4ft), and there are unused channels or channels, it is also possible to multiplex signals from other devices. Each audio data sent serially passes through a serial-to-parallel conversion circuit (8) and is sent to a communication path device (1).
) are connected in parallel to the lines of the telephones designated for connection, and a predetermined talky tone is output to each telephone.

(g) Effects of the Invention As is clear from the above description, the present invention provides cueing by specifying the address of audio data. By having an address counter as a WM, it is possible to output multiple talkie tones within the number of address counters (including the same talkie tone) from among many types of talkie tones at almost the same time. You can do it either way. Furthermore, since the number of lines used can be smaller than the number of types of talkies, the number of lines to which telephones and other trunk circuits are connected is not significantly reduced.

The present invention can also be applied to the appearance of complex tones with long cycles due to the recent diversification of telephone services.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention. (31・f-evening ROM, (4t)(42)-(4r
L)-address counter, (5)...address setting circuit, (7)...shift register.

Claims (1)

[Claims] (1) An electronic switching system that connects multiple telephone lines in a time-division switching system, transmits multiple voice
Data ROM stored as CM data and the data RO
A plurality of address counters for reading voice data of M, means for writing an address of desired voice data in the data ROM into the address counter, and means for sending the voice data from the data ROM to a communication path. By setting the address of the data ROM corresponding to the desired voice in each address counter, the desired voice data is transmitted and an exchange operation is performed with the subscriber line for which a connection instruction has been received. electronic switchboard.