JPS63220695A - Half-fixed line housing system in time division line switching system - Google Patents

Abstract

PURPOSE:To shorten time required for the release-connection of a half-fixed line by supplying the data reading address of the channel memory of a time division switch with the aid of the output of a selection circuit and composing a line indicated by a half-fixed line control device to be housed in a time division switching system as the half-fixed circuit. CONSTITUTION:Data held by a second control memory 4 is written by a man- machine interface 8 and the half-fixed line control device 7 without using a call control device 6. Therefore by the interface 8 and the device 7, the address of the channel memory 1 which needs half-fixed connection is stored in a second control memory 4 and '1' is stored in the high rank bit of the memory 4 and in a first memory 3, only the address of the channel memory 1 associating with a normal call is stored by the call control device 6. Thus all the required channels are set by the address of the channel memory 1 read from the first control memory 3 or the second control memory 4.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a time-division line switch, and in particular, a system for accommodating semi-fixed connection lines in a time-division line switch. When accommodating a semi-fixed line, the connection data of the semi-fixed line is transferred from the call control device to the control memory of the time-division channel switch during the initial setup of the exchange or when manually setting up the semi-fixed line. The communication path memory is controlled by writing this connection data into the control memory and reading it out every time slot. Therefore, unless the data in the control memory is rewritten, the same incoming line is connected to the same outgoing line and communication data is transferred.

[Problem that the invention seeks to solve]

In the conventional semi-fixed line accommodation method described above, connection data for the semi-fixed line is set from the call control device at the time of initial setting of the exchange or manual setting of the semi-fixed line. It is necessary to incorporate a semi-fixed line control program into the system. In addition, common line signal lines included in the call path and important lines connected for a long period of time are set up as described above until the call control device operates normally and the necessary data is written to the control memory. However, there is a drawback that it takes time to restore the semi-fixed line, especially when there is a failure in the call control device.

Therefore, the problem to be solved by the present invention, in other words, the purpose of the present invention is to improve the above-mentioned problem by independently providing a semi-fixed line setting means.

[Means for solving problems]

The semi-fixed line accommodating system in the time division line exchange of the present invention includes a first control memory that stores communication path connection data that is rewritten for each call by a call control device, and a bit that is one bit larger than the first control memory. a second control memory for storing connection data and control signals of a semi-fixed call path having a width; a semi-fixed line control device for setting connection data and control signals in the second control memory; , a selection circuit that selects either the connection data of the first control memory or the connection data of the second control memory according to the control signal of the second control memory, and the output of the selection circuit selects one of the connection data of the first control memory and the connection data of the second control memory. A data read address of the communication path memory of the time division switch is given, and the line designated by the semi-fixed line control device is accommodated in the time division line exchange as a semi-fixed line.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

In the figure, the time-division channel switch of the time-division line exchange includes a sequential write/random read channel memory 1 connected to an incoming highway 9 and an outgoing highway 10 of two channels, and a selection circuit 2 in this channel memory. A first control memory 3 and a second control memory 4 provide a read address of the communication path memory 1 through a clock signal, and a write address of the communication path memory 1 and a read address of the above-mentioned control memories 3 and 4 are provided based on a clock signal. Counter 5 generated
, a semi-fixed line control device 7 and a man-machine interface 8 connected to a second control memory 4 , and a call control device 6 further connected to the first control memory 3 .

The communication path memory 1 is a normal communication path memory, for example, for reading side control, and has 2'' channels.
is a normal n-bit wide 2-address holding memory. Furthermore, the second control memory 4 is a holding memory with an n+1 bit width 2'' address, and the lower n bits I~ of the address corresponding to the output channel to which the connection is made semi-permanently are stored in time slots 1~1~ as well as the normal control memory memory. The address of the communication memory to be exchanged is stored, and the upper 1 bit is set to ``o'' when the communication path is connected based on the output of the first control memory 3 in the output channel. When connecting the communication path based on the output of “
Remember 1゛°.

The selection circuit 2 sends the read data from the second control memory 4 to the channel memory 1 when the high-order 1 bit of the read data from the second control memory 4 is 1'', and the 1st bit of the read data from the second control memory 4 is o''. If so, the read data from the first control memory 3 is sent to the channel memory].

The data held in the second control memory 4 is written by the man-machine interface 8 and the semi-fixed line control device 7 without using the call control device W6.

Therefore, the man-machine interface 8 and the semi-fixed line control device 7 store the address of the communication path memory 1 which requires a semi-fixed connection in the second control memory 4 and "'1"' in the upper one bit. By storing only the address of the communication path memory 1 corresponding to a normal call in the control memory 3 of the call control device 6, the communication path that has been sequentially output from the first control memory 3 or the second control memory 4 is stored. All necessary communication paths are established by the addresses in memory 1.

Furthermore, even when the contents of the first control memory 3 are not stored, that is, when the call control device 6 is not operating, if the counter 5 operates normally, a semi-fixed communication path is connected via the second control memory 4. is guaranteed.

〔Effect of the invention〕

As explained above, the present invention allows a specific call route to be set by a semi-fixed line control device that is independent from the call processing program of the call control device in a time-division line switch. setting and changing communication paths for common line signals,
This has the advantage that communication path settings for important lines that will be connected for a long period of time can be executed independently from the call processing program.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. 1... Call path memory, 2... Selection circuit, 3... First
control memory, 4... second control memory, 5-mount counter, 6... call control device, 7... semi-fixed line control device, 8... man-machine interface, 9... input highway , 10...Exit Highway.

Claims (1)

[Scope of Claims] A first control memory that stores communication path connection data that is rewritten for each call by a call control device; a second control memory for storing connection data and control signals of a communication path; a semi-fixed line control device for setting connection data and control signals in the second control memory; and control of the second control memory. a selection circuit that selects either the connection data of the first control memory or the connection data of the second control memory according to a signal, and the output of the selection circuit selects the data of the channel memory of the time division switch. A semi-fixed line accommodating method characterized in that a read address is given and the line instructed by the semi-fixed line controller is accommodated in a time division line exchange as a semi-fixed line.