JPH03230627A - Line setting system - Google Patents

Abstract

PURPOSE:To simplify the line management function and the line connection function in each communication station by setting two lines as a pair in advance to each line forming a network. CONSTITUTION:A reception control section 2 designates sequentially reception lines in the set order in advance to a data reception section 1 to monitor the line. The data reception section 1 receives the signal of the designated reception line to send a reception data DR to an incoming call detection section 3 and a line monitor section 4, the line monitor section 4 monitors the line operating state of the line based on the reception data DR to output line pair information Sp not in use. The line pair is referred to as a line pair allocating a relevant line one by one for each line of the network. Thus, the line management func tion and the line connection function in each communication station configurating the network are simplified and the economical network is built up.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a demand assignment multiple access system (DAMA) that temporarily allocates a line only when a call occurs.
In particular, the present invention relates to a line setting method in a distributed DAMA system in which each communication station making up the network performs line management, line connection, etc. independently.

[Conventional technology]

In order to make effective use of communication lines, there is a demand assignment multiple access system (DAMA) that temporarily allocates a line only when a call occurs.In this DAMA system, the central office of the network handles line management and line connection. A centralized DAMA system that centrally performs operations such as
There is a distributed DAMA system in which each communication station configuring a network performs line management, line connection, etc. independently.

In the line connection method in the conventional distributed DAMA system, each communication station has the same line management function and line connection function as the central station in the centralized DAMA system, and each communication station has its own line setting function. The line is set up and connected using a dedicated line.

[Problems to be Solved by the Invention] In the line setting method in the conventional distributed DAMA system described above, each communication station making up the network has the same line management function and line connection function as the central station in a centralized DAMA system. Since each of these components is provided, the configuration becomes complicated and large-scale, making it difficult to downsize and reduce costs. Furthermore, since an independent dedicated line is provided for line setup in addition to the communication line, line efficiency decreases, especially when using vS.
This becomes a problem when economic efficiency is emphasized in small-scale stations such as ATs.

The purpose of the present invention is to simplify line settings.
The object of the present invention is to provide a line setting method for a distributed DAMA system that allows an economical network to be constructed.

[Means to solve the problem]

The line setting method of the present invention is used in a distributed DAMA system in which each communication station making up a network makes line connections. means, a receiving means for receiving a signal on a designated receiving line and outputting received data, a transmitting means for transmitting the transmitted data using the designated transmitting line, and a receiving line for the receiving means. a reception control means for specifying a transmission line; a transmission control means for specifying a transmission line for the transmission means; a line monitoring means for receiving the received data, monitoring line usage status, and outputting information on unused line pairs; An incoming call detection means detects an identification code included in received data and outputs an incoming call detection signal when detecting an incoming call to the own station, and outputs a call detection signal when detecting a call request from the own station. Each communication station is equipped with a call detecting means for outputting a call, and in the case of one incoming call, the receiving control means sequentially specifies receiving lines to the receiving means in a preset order when there is no call request. , when receiving an incoming call detection signal, fixes and specifies a receiving line and notifies the fixed receiving line to the transmission control means I\, and the transmission control means sets a line paired with the receiving line to the line pair. Read it from the storage means and designate it as a transmission line; in the case of a call, when the transmission control means receives the call detection signal, the transmission control means selects the unused line pair based on the information of the unused line pair from the line monitoring means. One line is designated as a transmission line and the other line of the pair of unused lines is notified to the reception control means, and the reception control means is configured to designate the other line as the reception line.

〔Example〕

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

FIG. 1 is a block diagram showing an embodiment of the present invention, and shows the configuration of communication stations forming a network. In the figure, a data receiving unit 1 receives signals on a designated receiving line and outputs received data, a receiving control unit 2 specifies the receiving line, and detects an identification code of the received data to detect an incoming call to the local station. An incoming call detection unit 3 detects line usage, a line monitoring unit 4 monitors line usage, a call detection unit 5 detects a call request from the local station, and generates an identification code for the local station and an identification code for the other station. an address generation unit 6, a transmission control unit 7 that specifies a transmission line;
A data transmission unit 8 that transmits transmission data addressed to the other station on a designated transmission line, and a line pair storage unit 9 that stores line pair information.
It is equipped with

Next, the operation will be explained.

When there is no call request at each communication station, the reception control unit 2 sequentially designates reception lines in a preset order to the data reception unit 1 in order to monitor the lines.

The data receiving section 1 receives the signal of the designated receiving line and sends the received data DR to the incoming call detecting section 3 and the line monitoring section 4. The line monitoring unit 4 monitors the line usage status based on the received data DR, and outputs unused line pair information SP.

Here, a line pair is a pair that is set in advance by allocating a one-to-one corresponding line to each line constituting the network.

First, when the incoming call detection unit 3 detects the identification code of its own station in the received data DR during line monitoring, that is, when an incoming call occurs, the incoming call detection unit 3 generates an incoming call detection signal SR and controls reception. At the same time, the received data DR is sent to the terminal device. Upon receiving the incoming call detection signal SR, the reception control section 2 fixes the reception line, designates the fixed reception line to the data reception section 1, and notifies the transmission control section 7 of this reception line. When the transmission control section 7 receives the notification of the reception line, it reads out the line that is paired with the reception line from the line pair storage section 9, sets it as the transmission line, and designates the transmission line to the data transmission section 8.

The data transmitter 8 shifts to a communication state by receiving and transmitting transmission data D↑ consisting of an incoming call response transmitted from the terminal device.

Next, when a call request for the own station occurs, call detection M5
detects the transmission data D containing a call request from the terminal device, generates a call detection signal St, and sends it to the transmission control section 7, as well as the identification code of the partner station to the address generation section 6. When the transmission control unit 7 receives the call detection signal ST, it sets a transmission line and a reception line based on the unused line pair information SP output by the line monitoring unit 4, and sets the transmission line and the reception line to the data transmission unit 8. At the same time, the reception control unit 2 is notified of the reception line. Upon receiving the notification of the receiving line, the receiving control unit 2 stops the line monitoring operation, and at the same time sets the notified receiving line and designates it to the data receiving unit 1. On the other hand, the address generation section 6 generates a call connection request signal including the identification code of its own station and the identification code of the other station, and sends it to the data transmission section 8 . The data transmitter 8 requests a call connection by transmitting a call connection request signal to the other station using a designated transmission line.

When the communication is completed, transmission is stopped, line monitoring is started again, and the next call connection is in standby mode.

Note that when setting line pairs, if the transmitting line and the receiving line are specified in advance, the number of lines to be monitored at each communication station is halved, and the cycle of line monitoring can be shortened.

[Effects of the Invention] As explained above, according to the present invention, by setting two lines as a pair in advance for each line forming a network, the line management function and line connection at each communication station are improved. Since the functions and the like are simplified, the configuration becomes simple, and the equipment of each communication station can be made smaller and lower in cost, making it possible to construct an economical network. Further, since a special line is not required for line setting, the line can be used effectively. Furthermore, by specifying one side of the line pair for transmission, the number of lines that each communication station must monitor is halved, which not only shortens the cycle of line monitoring, but also allows automatic transmission when an incoming call is received. Since the transmission line is determined in advance, the time required to set up the line can be reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1... Data reception section, 2... Reception control section, 3...
Incoming call detection unit, 4... Line monitoring unit, 5... Call detection unit, 6... Address generation unit, 7... Transmission control unit, 8.
. . . Data transmission section, 9 . . . Line pair storage section.

Claims (1)

[Claims] In a distributed DAMA system in which each communication station making up a network makes line connections, there is a line pair storage means for storing information on line pairs in which lines are allocated one-to-one to each line in advance, and a specified receiving line. a receiving means for receiving a signal and outputting the received data; a transmitting means for transmitting the transmitted data using a designated transmission line; a reception control means for specifying a reception line for the receiving means; a transmission control means for specifying a transmission line to the transmission means; a line monitoring means for receiving the received data, monitoring line usage status and outputting information on unused line pairs; and an identification code included in the received data. an incoming call detection means that outputs an incoming call detection signal when detecting an incoming call to its own station; and a call detection means that outputs a call detection signal when it detects a call request from its own station. Each of the communication stations is provided with, in the case of an incoming call, the reception control means sequentially designates reception lines to the reception means in a preset order when there is no call request;
When receiving an incoming call detection signal, a fixed receiving line is designated and the fixed receiving line is notified to the transmission control means, and the transmission control means stores the line paired with the receiving line in the line pair storage means. Read from and specify as the transmission line;
In the case of a call, when the transmission control means receives the call detection signal, it specifies one line of the unused line pair as the transmission line based on the information of the unused line pair from the line monitoring means, and also A line setting method characterized in that the other line of the pair of unused lines is notified to the reception control means, and the reception control means designates the other line as the reception line.