JPH0481904B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a message information distribution system, particularly a time division system, in which a data terminal device is accommodated in a line switching device,
This invention relates to a message distribution method in a switching system in which a message switching device is connected at the rear.

[Conventional technology]

Conventionally, the message information distribution method in this type of message information exchange system consists of a message transfer line that connects a message demultiplexer and a message processing section in a message exchange device, and an exchange that connects the exchange device and the message demultiplexer. One-on-one in advance with the channel on the inter-department message transfer line
The fixed distribution method is set.

[Problems to be Solved by the Invention] In the message information distribution method in the conventional message information exchange system described above, the line switching section cannot determine the processing status of the message processing section based on the transfer speed at the line switching section. The channel used by the inter-switching message transfer line and the connection between the message transfer line are determined on a one-to-one basis, so if the line switching equipment is connected to a specific message processing unit. If you use a channel that corresponds to a message transfer line that is already connected, the connection will end up exceeding the processing capacity of that message processing unit, and as a result, a message that cannot be connected will be returned and a reconnection will be attempted, but the same message processing unit will be connected again. It has the disadvantage of being connected to

The object of the present invention is to eliminate the above-mentioned drawbacks and provide a message information distribution system that eliminates the need for reconnection processing by determining whether the message processing section has a margin and selectively connecting the message to the message multiplexing/demultiplexing section. There is a particular thing.

[Means for solving problems]

In the message information distribution system of the present invention, when a message is input to the message processing unit through the message transfer line, the line switching unit generally converts the single data transfer rate and processes the transfer. a detection means for detecting the data transfer rate after returning the message on the line to the data transmission/reception rate on the data terminal device side and notifying the message demultiplexing control section, and storing this notification information in correspondence with each message processing section; By setting the default values for each message in advance, in response to a newly generated connection request for the message demultiplexing unit, the message processing unit will respond to the message processing unit as much as possible. The message demultiplexing control section determines whether or not there is sufficient capacity and, based on the determination result, instructs the message demultiplexing section to select a message processing section to be connected.

〔Example〕

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

FIG. 1 is a block diagram of an embodiment of the present invention. In the figure, a plurality of data terminal devices 1a to 1n are accommodated in a time-division type line switching device 2, and a message switching device 3 is located downstream of the line switching device 2. is connected. The message switching device 3 includes a message demultiplexing section 31 connected to the multiplexing channel of the circuit switching device 2 by an inter-exchange message transfer line 20.
and multiple message transfer lines 30aa each.
A plurality of message processing units 32a to 32n are connected to the message demultiplexing unit 31 by ~30an, 30ba to 30bn, and 30na to 30nn, and a message demultiplexing unit 31 and a plurality of message processing units 32
The message demultiplexing control section 33 is connected to the terminals a to 32n, and a memory section 34 is connected to the control section 33.

Message information sent from the data terminal device 1a is sent to the line switching device 2 through the terminal line 10a.
The message is sent to the message exchanger 3, undergoes multiple transfer processing, and is input to the message multiplexer/demultiplexer 31 in the message exchange device 3 through the inter-exchange message transfer line 20. Conventionally, in this message demultiplexing section 31, message transfer lines 30aa to 30nn, which were previously set, correspond to the channels through which message information has been transferred from the line switching device 2.
One of the lines is selected and the message processing unit 3
A system is adopted in which the message is transferred to one of 2a to 32n and processed. In the present invention, first, since the message processing section 32a to which the message demultiplexing control section 33 is originally connected is empty, the message demultiplexing section 31, as in the conventional case, transfers the message information from the channel on which the message information from the line switching device 2 is loaded. Connect to transfer line 30aa. The connected message processing section 32a detects the data transmission/reception speed on the data terminal device 1a side in the connected message from the message information, and sends the transmission/reception speed information to the message multiplexing/demultiplexing control section 33 through the control data line. The message multiplexing/demultiplexing control section 33 stores the received data terminal device side data transmission/reception speed in a memory section 34 that manages data corresponding to each message processing section. Message processing section 3
2a processes the connection message in the same manner as before.

Next, the message information sent from another data terminal device 1b is passed through the terminal line 10b, the line switching device 2, and the inter-exchange message transfer line 20 to the message demultiplexing unit 31 of the message switching device 3.
When the message is input to the message demultiplexing control unit 3
3 is the message processing unit 3 of the connection destination based on the channel number used in the inter-exchange message transfer line 20.
2a to 32n, the message transmission/reception speed being processed at that time is read from the memory section 34, and it is checked whether the message processing section can process the message information to be connected from now on. In this case, a maximum processing capacity is set in advance for each of the message processing units 30a to 30n, and a check is made to see if the processing capacity exceeds a specified value. By the way, the connection destination is, for example, the message processing section 32a.
If the processing capacity reaches the specified value by processing the message, the message demultiplexing control unit 33
performs the same check as above for other message processing units that can perform the same processing, selects an empty message processing unit from the other message processing units, and sends the message to the message multiplexing/demultiplexing unit 31 so as to connect to that message processing unit 32. Instruct.

As a result, the line switching device 2 can perform exchange processing without considering the data transfer rate flowing through the connected line, and the message switching device 3
Then, as a result of trying to connect, there may be a case where the connection becomes impossible due to a processing overflow in the message processing section 32.

〔Effect of the invention〕

As explained above, the present invention is capable of determining the processing status of message processing units that are already connected and processing messages when a connection request is generated in the message demultiplexing unit. By determining whether to connect to the message processing section and connecting to that message processing section, it is possible to avoid a situation where the connection becomes impossible.
This has the effect of eliminating the processing required for reconnection processing when connection becomes impossible, thereby providing a message exchange system with high connection efficiency.

Furthermore, the line switching equipment does not require any special functions to be added to the normal line switching equipment and can be used as is, so by adding message switching equipment to the existing line switching equipment, connection efficiency is higher than that of conventional systems. This has the effect of providing a message exchange system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the message information distribution system of the present invention. 1a to 1n...Data terminal device, 2...Line switching device, 3...Message switching device, 31...Message demultiplexing section, 32a to 32n...Message processing section, 33...Message demultiplexing control section, 34 ...Memory unit, 10a to 10n...Terminal line, 20...Message transfer line between switching sections, 3
0aa~30nn...Message transfer line.

Claims (1)

[Claims] 1. In a switching system in which a data terminal device is housed in a time-division type circuit switching device, and a message switching device having a message demultiplexing section and a plurality of message processing sections is connected after the circuit switching device, a message processing section is provided. a transmission/reception detection means for detecting the transmission/reception speed of connection messages of the data terminal equipment; 1. A message information distribution system comprising: control means for controlling connection selection from a terminal device to a message processing section.