JPS63214045A - Electronic exchange - Google Patents

Abstract

PURPOSE:To attain communication between terminal equipments with different attributes by trying a call connection via a transmission format conversion section and providing a control means for setting a path between terminal equipments at the time of occurrence of incoming rejection due to the dissidence of attributes. CONSTITUTION:In an electronic exchange 10, when a call set command is sent from a terminal 11, an exchange control section 51 receives call setting and acquires a time slot and informs an incoming call to a terminal 12. When the terminal 12 can receive a call, the logic path is set not through a transmission format conversion section 52 according to response procedures during the call. If the terminal 12 rejects the call because of the cause of dissident attribute, a control section 51 analyzes the cause and when the correspondence is judged to be enabled by communication via the section 52, the path from both the terminals 11, 12 to the section 52 is acquired. The section 51 sends the call set command having the same terminal attribute information as the incoming rejection terminal to the terminal 12, the logic path is set through terminal 11- a subscriber line concentration section 31- a time division multiplex transmission line 42- a conversion section 52- a subscriber line concentration section 32- the equipment 12 to attain the data communication between the terminals 11, 12.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to an electronic exchange that connects and accommodates various terminal equipment.
Regarding.

Conventional technology Conventionally, this type of electronic exchange has a subscriber concentration function and an exchange connection function, and allows communication between terminals by setting a call path in response to a call connection request from a terminal. It is configured.

FIG. 3 shows the configuration of a conventional electronic exchange.

In FIG. 3, terminals 61 and 62 are connected to subscriber line concentrators 81 and 82 in the electronic exchange 100 via subscriber lines 71 and 72, respectively. electronic exchange 100
There are two types of transmission paths inside. One side is a command transmission line 91, which connects subscriber line concentrators 81 and 82 and switching control unit 1.
It is used to send and receive call connection control and monitoring control commands to and from 01. The other is a time division multiplex communication path, which realizes transparent data communication by loading and unloading data between the terminals 61 and 62 in time slots divided in time.

Next, the operation of the above conventional example will be explained. In the flow shown in FIG. 4, the terminal 61 makes a call connection (call setting) to the terminal 62.
When the request is made, the exchange control unit 103. accepts the call setup, acquires a time slot, and notifies the terminal 62 of the incoming call (
call setup). When the calling terminal 62 answers, the terminal 6
Communication is in progress between 1 and 62.

In this way, data communication between terminals can be performed even with the above-mentioned conventional electronic exchange.

Problems to be Solved by the Invention However, in the above-mentioned conventional electronic switching equipment, data communication between different terminals is so-called transparent, which means that data communication between terminals is not restricted by terminal attributes such as data transmission speed and synchronization method from the network side. There was a problem with not being able to communicate.

The present invention solves these conventional problems,
The purpose is to provide an excellent electronic exchange that can integrate and accommodate terminals with different attributes, and connect and communicate with each other.

Means for Solving the Problems In order to achieve the above object, the present invention provides a transmission format that has a function of extracting data from a time slot of a time-division channel, converting the format, and then outputting the data to another time slot. The conversion unit and the exchange control unit are provided with means for setting a mode to the transmission format conversion unit and performing a re-incoming process when an incoming call is rejected due to an attribute mismatch.

Effects The present invention has the following effects due to the above configuration. In other words, when a call is rejected due to an attribute mismatch, the exchange control unit analyzes the cause, sets paths to both the calling and receiving terminals and the transmission format converter, specifies the conversion format, and re-receives the call to the rejected terminal. Therefore, communication can be performed between terminals with different attributes.

Embodiment FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, ζ, terminals 11 and 12 are connected to subscriber line concentrators 31 and 32 in the electronic exchange 10 via respective adder lines 21 and 22, respectively. There are two types of transmission paths within an electronic exchange. On the other hand.

A command transmission line 41 and one subscriber line concentrator 31.32,
It is used for receiving and transmitting call connection control/monitoring control commands between the exchange control section 51 and the transmission format conversion section 520. The other is a time division multiplex communication path 42, which realizes transparent data communication by loading and unloading data into time slots that are divided in time on the line. The exchange control unit 51 is a block that controls call connection control, and also controls time slot usage management and the transmission format conversion unit 52. Transmission format converter 5
Terminal 61 .
Data transmission between 62 and 62 stations is performed.

Next, the operation of the above embodiment will be explained. As shown in the process flow of FIG. 2, the call setup (attribute A) procedure starts from the number of call setup commands sent from the terminal 11. Exchange control unit 5
After receiving the call setup and acquiring a time slot, the terminal 1 notifies the terminal 12 of the incoming call.

If the terminal 12 is able to receive the call, during the call, the response procedure allows the call to be sent from the terminal 11 to the subscriber line concentrator 31 to the time division multiplex transmission line 42 to the subscriber line concentrator 32 to the terminal without going through the transmission format converter 52. A logical path is set between 12.

If the terminal 12 rejects the incoming call due to the attribute mismatch factor (
Attribute B) indicates that when the exchange control unit 51 analyzes the cause and determines that it can be handled by communication via the transmission format conversion unit 52, the exchange control unit 51 performs communication from both terminals 11 and 12 to the transmission format conversion unit 52. The @exchange control unit 51 that acquires the path transmits to the terminal 12 a call setup command having the same terminal attribute information as the incoming call rejection terminal.
~A logical path is set between the subscriber line concentrator 31~time/minute multiplex transmission line 42~transmission format converter 52~subscriber line concentrator 32~terminal 12, and data communication between the terminals 11 and 12 becomes possible◇ According to the above embodiment, the exchange control unit 51 detects a rejected call due to attribute mismatch, reacquires a time slot, sets the mode to the transmission format conversion unit 52, and processes the call again to the rejected terminal. This has the advantage that a call can be set up between the terminals 11 and 12 via the transmission format converter 52, and data can be transmitted between terminals with different attributes.

Effects of the Invention As is clear from the above embodiments, the present invention detects incoming rejected calls due to attribute mismatch, and converts the transmission format converter 52
This function reconfigures the logical bus and processes the re-incoming call to the terminal that rejects the call, and has the effect of being able to perform call connection processing and data communication between terminals with different attributes.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of an electronic exchange according to an embodiment of the present invention, FIG. 2 is a flow diagram of the rejected call recovery process of the same device, FIG. 3 is a schematic block diagram of a conventional electronic exchange, and FIG. 4 is a flow diagram of call connection of the same device. 10...Electronic exchange, 11.12...Terminal, 21
．． 22... Subscriber line, 31.32... Subscriber line concentrator, 41... Command transmission path, 42... Time division multiplex communication path, 51... Exchange control unit, 52... Transmission Format converter. Figure 1

Claims (1)

[Claims] It is equipped with an interface that can send and receive various information between terminals, exchanges, and other communication control devices using a common line signaling system, and is capable of handling calls between terminals with different terminal attributes such as data transmission speeds and synchronization methods. A connection control means for setting a path between terminals by attempting a call connection via a transmission format conversion unit when a call is rejected due to a terminal attribute mismatch from a called terminal when a connection request occurs; Communication between terminals with different attributes is performed using a format conversion means that converts data transferred via a time slot into a format specified by an exchange control unit and outputs the converted data to a specified time slot of a time division multiplex communication path. An electronic switchboard designed to do this.