JPH01137749A - Remote switching control system for spatial division type switch - Google Patents

Abstract

PURPOSE:To easily remotely switch a data line between data transmitter/receivers from a distance without providing a signal line for control information transmission except for a data line by providing a control data inserting/extracting circuit and a switch control circuit at the spatial division type switch-side. CONSTITUTION:On the spatial division type switch 300-side, the control data inserting/ extracting circuit 100 to execute the insertion/extraction of data in lengths shorter than the minimum determined by flag synchronizing data lines 1-3 and a switch control circuit 200 to execute competition processing for extraction data and to control a switch 300, are provided. And control data to control the switch 300 is inserted between a flag and a flag with a data length shorter than the minimum value determined by the lines 1-3, and transmitted from data transmitter/receivers 101, 102, 103 on the caller's side. Next, by the circuit 100 disposed before the switch 300, the control data is extracted, and based on thus extracted control information, the circuit 200 controls the switch 300. As a result, no signal line for control information transmission is required to provide in addition to the data lines, and the data line between the data transmitter/receivers can easily be switched from a distance.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a remote switching control method for a space division type switch, and in particular, the present invention relates to a remote switching control system for a space division type switch, and in particular, to a data line switching system that employs a flag synchronization system. without using signal lines,
This invention relates to a remote switching control method for a space division type switch that is controlled remotely.

[Prior Art] Conventionally, this remote exchange control system has a signal line for transmitting control information for performing remote exchange control in addition to a data line for transmitting data, and this signal line is used to divide space. There were two types of control methods: one was to control a type switch and connect to the desired data transmitting/receiving circuit, and the other was to select the destination by changing the destination by specifying the address field in the data without using signal lines.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional remote switching control system for space division type switches, when performing remote switching control using signal lines, a signal line for control is dedicated in addition to the data line. In order to use the system for data transmission, a separate line must be installed in addition to the line necessary for data transmission, and there is a problem in that there is a lot of waste in construction and maintenance costs and maintenance.

In addition, when performing remote exchange control without using signal lines, the data receiving side must have a function that recognizes the address part and branches the data. However, since the circuit in charge of switch control, like the data transmitting/receiving circuit, must receive data every time and analyze the address part of that data, there is a problem in that the processing on the side that receives the data is complicated.

[Means for Solving the Problems] The present invention solves the above problems and allows remote data line exchange between data transmitting and receiving devices easily without using signal lines for transmitting control information in addition to data lines. The purpose of this invention is to provide a remote switching control method for a space-division type switch.

In order to achieve the above object, a remote switching control method for a space division type switch according to the present invention provides a remote switching control method for a space division type switch that accommodates flag synchronized data lines connected to a plurality of data transmitting/receiving devices and switches connection of the lines. In the control method, the space division type switch side includes a control data insertion/extraction circuit that inserts or extracts data having a length less than the minimum length specified by the flag synchronized data line, and a control data insertion/extraction circuit that performs competition processing on the extracted control data to A switch control circuit for controlling the space division type switch is provided, and control data for controlling the space division type switch from the data transmitting/receiving device on the calling side is flagged with a data length less than the minimum length specified by the synchronous data line. A control data insertion/extraction circuit inserted between and sent out between the flag and the space division type switch,
A switch control circuit extracts the control data and controls the space division type switch based on the extracted control information.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a remote switching control system for a space division type switch according to an embodiment of the present invention.

In the same figure, in the remote switching control system of the space division type switch according to the present embodiment, data transmitting/receiving devices 1, 2.3,
A control data insertion/extraction circuit 100 and a switch control circuit 200 are connected to these data transmitting/receiving devices 1.2.3.
and a space division type switch 300.

The control data insertion/extraction circuit 100 is connected to the data transmitting/receiving device 101 via the flag synchronization data line 1,
Similarly, it is connected to the data transmitting/receiving device 102 via the flag synchronous data line 2, and to the data transmitting/receiving device (c) 103 via the flag synchronous data line 1a3. In addition, the control data insertion/extraction circuit 100 includes reception data signal lines 11 and 1.
It is connected to the space division type switch 300 via 2° 13 and transmission data signal lines 21, 22, and 23.

The switch control circuit 200 is connected to the control data insertion/extraction circuit 100 via the insertion/extraction data line 31,
It is also connected to a space division type switch 300 via a switch control signal line 32. Next, the operation of this embodiment will be explained.

When the data transmitting/receiving device 101 makes a call to the data transmitting/receiving device 102, the data transmitting/receiving device! 01 inserts switch control information composed of a data length less than the minimum length specified by the flag synchronous data line between the flags of the flag synchronous data line 1 and sends it to the control data insertion/extraction circuit 100. do. Control data insertion/extraction circuit 1
00 is flag synchronization data time 11! It extracts the switch control information received from i11 and whose length is less than the specified length, and sends this switch control information to the switch control circuit 200 via the insertion/extraction data line 31. Upon receiving the switch control information, the switch control circuit 200 sends control data for checking the usage status of the data transmitting/receiving device 102 on the receiving side to the control data insertion/extraction circuit 100. The control data insertion/extraction circuit 100 inserts the received control data of less than a specified length between the flags of the flag synchronization data line 2 and sends it to the data transmitting/receiving device 102.

Since the transmitted control data is less than the specified length, the data transmitting/receiving device 102 recognizes it as control data,
Communication information indicating whether communication is possible or not is sent out via the flag synchronized data line 2 with the same data length. The control data insertion/extraction circuit 100 extracts the 3-way information sent from the flag synchronization data line 2 and sends it to the switch control circuit 200 via the insertion/extraction data line 31. The switch control circuit 200 controls the space division type switch 300 via the switch control signal line 32 based on the communication information from the data transmitting/receiving device 102, and also controls the transmit data signal line 21 and the receive data signal line 12 for transmission. The data signal line 22 and the received data signal line 11 are connected via a space division switch 300. The switch control circuit 200 then uses the control data insertion/extraction circuit 100 to inform the data transmitting/receiving device 101, which is the calling side, whether communication is possible or not.
;b++ control data insertion/extraction circuit 100 inserts into the flag synchronization data line 1 the acceptability information consisting of a data length less than the specified length, and the data transmitter/receiver 101 You will know when to start.

[Effects of the Invention] As explained above, the present invention provides a remote switching control method for a space division type switch that accommodates flag synchronized data lines connected to a plurality of data transmitting/receiving devices. By providing a control data insertion/extraction circuit that inserts or extracts data with a length less than the minimum length specified in the data line, and a switch control circuit that controls the space division type switch while performing competition processing on the extracted control data. , the data transmitting/receiving device can remotely control the space division type switch via the data line without using a signal line for transmitting control information in addition to the data line, and the data line remote exchange between the data transmitting/receiving devices can be easily configured. There are effects that can be achieved with

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a remote switching control system according to an embodiment of the present invention. 101.102, 103: Data transmitting/receiving device 1.2, 3
:Flag synchronous data line 100: Control data insertion/extraction circuit 200: Switch control circuit 300: Space division type switch 11, 12, 13: Reception data signal line 21, 22, 23: Transmission data signal line 31: Insertion/extraction data Line 32: Switch control signal line

Claims (1)

[Scope of Claims] In a remote switching control system for a space-division switch that accommodates flag-synchronized data lines connected to a plurality of data transmitting/receiving devices and switches connection of the lines, the space-division switch side includes flag-synchronized data lines connected to a plurality of data transmitting and receiving devices. A control data insertion/extraction circuit that inserts or extracts data having a length less than the minimum length specified in the line, and a switch control circuit that performs conflict processing on the extracted control data and controls the space division type switch, and makes a call. The data transmitting/receiving device on the side that performs the space division transmits control data for controlling the space division type switch with a data length less than the minimum length specified by the flag synchronization data line, inserting it between the flags. A control data insertion/extraction circuit provided in front of the type switch extracts the control data, and based on the extracted control information, the switch control circuit performs the following:
A remote switching control method for a space division type switch, characterized in that the space division type switch is controlled.