JPH04280154A - Connection method - Google Patents

Abstract

PURPOSE:To offer the connection method in which a control signal from an attendant board controller to each attendant board is transferred to each line, the number of signal lines between the attendant board controller and each attendant board is less and the signal lines are used to transfer a digital signal with respect to the connection method between the attendant board and the attendant board controller in the attendant board sub-system. CONSTITUTION:A voice signal and a control signal between an attendant board controller 3 and an attendant board 2 are multiplexed and sent/received via a signal line 5 in the attendant board sub-system in which the voice signal and the control signal between an exchange 1 and the attendant board 2 are relayed by the attendant board controller 3.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the connection method between a switchboard and a switchboard control device in a switchboard subsystem in which voice signals and control signals between the switchboard and the switchboard are relayed by the switchboard control device. .

FIG. 3 is a block diagram of the main parts of a switching system using a switchboard subsystem. The switchboard subsystem 10 in FIG. 3 provides operator services for a toll exchange or an international exchange, and is usually installed in a separate office building separate from the machine room where the switchboard 1 is installed. It consists of switchboards 2-1, 2-2, ... 2-N, and a switchboard control device 3 that can accommodate up to 30 (or 23) switchboards. A PC with the personality of
It is connected by lines 11 and 12 of M30 (or 24).

[0003] The switchboard control device 3 receives voice signals and signals via the lines 11 and 12 of the PCM 30 (or 24) between the switchboard 1 and the plurality of switchboards 2-1, 2-2, . . . 2-N. It relays control signals.

0004

2. Description of the Related Art FIG. 4 is a block diagram of a conventional switchboard subsystem. The line 11 of the PCM 30 shown in FIG.
The signals from 12 are separated by 30 in demultiplexing units 21 and 22, respectively.
are separated into audio signal CH and control signal CH, and each CH
The signal No. 1 is converted into an analog audio signal by the A/D/D/A converter 23-1, and sent to the switching board 2'-1 via two lines A and B, respectively. CH2 signal is A/D・
The signal is converted into an analog audio signal by the D/A converter 23-2, and sent to the switching board 2'-2 via two lines A and B, respectively.

[0005] This is sent to the switchboard 2'-N in the same manner. Control signal CH separated by demultiplexing sections 21 and 22
In order to transmit the signals to the switchboards 2'-1, 2'-2, ... 2'-N, two wires are connected between the control section 25 of the switchboard controller 3' and the switchboard 2'-1. Connect with a control signal line, and connect these two
The main control signal line is switchboard 2'-1, 2'-2,...
2'-1, 2 so that the input is parallel to 2'-N.
'-2,...2'-N are connected in an imaginary manner.

[0006] Then, the switchboards 2'-1, 2'-2, separated by the demultiplexing sections 21 and 22 of the switchboard control device 3'
...2'-N control signals are sent via the control section 25, and the control signal transmitting/receiving section 26 of each switchboard 2'-1, 2'-2, ...2'-N sends the control signal to the own switchboard. Only the control signal with the address is taken in.

All switchboards have the same configuration, so to explain 2'-1 as a representative example, the audio signal from the switchboard input from the two lines A and B is sent to the switch SW.
If one of them is selected in , and the control signal with the address of the own exchange board input to the headphones 30 and received by the control signal transmitting/receiving section 26 is a signal indicating that, for example, should be displayed, the display is performed. display on the device 31 and also on the headphones 30
When the telephone number of the other party to whom a connection is requested is entered on the keyboard 13, this signal is sent to the demultiplexing section 21 or 22 via the control signal transmitting/receiving section 26 and the control section 25 of the switchboard control device 3'. is multiplexed and sent to the exchange.

[0008]

[Problems to be Solved by the Invention] However, in the conventional switchboard subsystem, the switchboard control device 3' and each switchboard are connected by two voice lines, and the number of lines is large, making construction time-consuming. The two control signal lines connect switchboards 2'-1, 2'-2, . Since the control signal transmitting/receiving section 26 of each switchboard receives the control signal with the address of its own switchboard, the amount of information that can be transferred is small, and the amount of information that can be transferred is small. Since the two audio lines between them pass analog signals, there is a problem in that they are greatly affected by noise.

According to the present invention, control signals from the switchboard control device to each switchboard can be transferred through lines to each switchboard, and the number of signal lines between the switchboard control device and each switchboard is small, and these signal lines are digital. The purpose is to provide a connection method that transfers signals.

0010

[Means for Solving the Problems] FIG. 1 is a block diagram of the principle of the present invention. As shown in FIG. 1, the audio signals and control signals between the switchboard controller 3 and the switchboard 2 are relayed by the switchboard controller 3 in the switchboard subsystem. The control signals are multiplexed and transmitted and received via the signal line 5.

[0011]

[Operation] According to the present invention, the switchboard control device 3 and the switchboard 2
are connected by a single signal line 5, and the digital audio signals and control signals between the switchboard control device 3 and the switchboard 2 are multiplexed and transmitted and received via the signal line 5. Since the number of control signals is small and the influence of noise is reduced, and lines for control signals are also provided for each switchboard, it is only necessary to send and receive control signals for each switchboard, and the line for each switchboard is Since there is no need to attach an address to the control signal, the amount of information to be transferred can be increased.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 is a block diagram of a switchboard subsystem according to an embodiment of the present invention. In FIG. 2, line 11 of PCM 30
, 12 are sent to demultiplexers 21 and 2 as in the conventional example.
2 into 30 audio signals CH and control signals CH, and the audio signal of each CH1 is demultiplexed by the demultiplexer 18-1.
The audio signal of each CH2 is input to the demultiplexer 18-2, and the audio signal of CHN is similarly input to the demultiplexer 18-N.

On the other hand, for example, NO. The control signal of the 7-signal system is input to the control unit 20, which analyzes the input control signal, and sends the control signal for switchboard 2-1 to the demultiplexer 18-1, and the control signal for switchboard 2-2 to the demultiplexer 18-1. The material is sent to the demultiplexer 18-2,
The demultiplexing sections 18-1, 18-2, . . . multiplex it with the 2CH audio signal, and send it to the switching boards 2-1, 2-2, . . . via the signal lines 5-1, 5-2, . Send to...

Since the switchboards 2-1, 2-2, . Part 16
The audio signal and control signal of two CHs are separated at
The audio signals of the two CHs are each sent to an A/D/D/A converter 14,
The signal is converted into an analog signal at 15 and sent to the headphones 30 via switch SW.

[0015] The control signal is input to the control section 17, and is, for example,
. . is displayed on the display device 31, and when the telephone number of the other party to whom connection is requested via the headphones 30 is entered on the keyboard 13, this signal is transmitted to the control section 17, It is input to the control section 20 via the demultiplexing section 16, the signal line 5-1, and the demultiplexing section 18-1.
0, NO. 7 signaling system and sent to a common line signaling device (not shown) of the exchange.

[0016] In this way, the switchboard control device 3 and
Each switchboard 2-1, 2-2, ... is connected by a signal line that passes the digital 2CH audio signal and control signal, so construction work is reduced, and The influence of noise is also reduced.

Furthermore, since a line for control signals is also provided for each switchboard, it is only necessary to send and receive control signals for each switchboard, and there is no need to attach an address to the control signal for each switchboard. Therefore, the amount of information to be transferred can be increased.

[0018]

As explained in detail above, according to the present invention, the switchboard control device 3 and each switchboard 2-1, 2-2, . . .
・Since the two channels are connected by a single signal line that passes digital 2CH audio signals and control signals, construction work is reduced, the influence of noise is reduced, and there is no need for a line for control signals. is provided for each switchboard, so it is only necessary to send and receive control signals for each switchboard, and there is no need to attach an address to the control signal for each switchboard, increasing the amount of information to be transferred. There is an effect that can be done.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the principle of the present invention.

FIG. 2 is a block diagram of a switchboard subsystem according to an embodiment of the present invention;

[Figure 3] is a block diagram of the main parts of a switching system using a switching board subsystem.

FIG. 4 is a block diagram of a conventional switchboard subsystem.

[Explanation of symbols]

1 is a switchboard, 2-1 to 2-N, 2'-1, 2'-2 is a switchboard, 3, 3
' is the switchboard controller, 5, 5-1, 5-2 are the signal lines, 10 is the switchboard subsystem, 11, 12 are the PCM30 lines, 13 is the keyboard, 14, 15, 23-1, 23-2 is an A/D/D/A converter, 16, 18-1, 18-2, 21, 22 is a demultiplexer,
17, 20, and 25 are control units; 26 is a control signal transmitting/receiving unit; 30 is a headphone; 31 is a display device; and SW is a switch.

Claims (1)

[Claims] Claim 1: In a switchboard subsystem in which audio signals and control signals between a switchboard (1) and a switchboard (2) are relayed by a switchboard controller (3), the switchboard controller (3) and the switchboard are connected to each other. A connection method characterized in that audio signals and control signals between the units (2) are multiplexed and transmitted and received via a signal line (5).