JPS60127846A - Address terminal number notifying system for line exchange - Google Patents

Abstract

PURPOSE:To attain the information of a destination terminal number without complicating the processing of a central control section by adding a destination terminal number reception/transmission function and its control function to an interface circuit provided corresponding to a terminal device. CONSTITUTION:A terminal interface circuit 20 provided in correspondence to a terminal device 11 is provided with a terminal interface function 21, a destination terminal number reception function 22, a destination terminal number transmission function 23 and its control function 24. When a line exchange 10 receives a line exchange destination number from the terminal device 11, a connecting path between the terminal device 11 and an internetwork connecting device 13 to a channel switch under the control of a central control section 14 and informs the incoming call to the inter-network connecting device 13. When the inter-network connecting device receives a destination terminal number, the device 13 prepares for the communication with the terminal device 16. Thus, the device 13 receives a signal without notifying the destination terminal number and does not participate in the processing relating to an opposite network destination terminal number information.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for realizing a destination terminal number notification function in a line exchange.

(Prior art and its problems) When connecting a circuit switching system and other communication networks, such as other circuit switching networks, packet switching networks, or local area networks, it is important to Since the procedures and methods for assigning terminal numbers/addresses are different, an inter-network connection device is installed between the two to convert and match them for connection. In this way, in a line exchange and a low communication network (other network) that are interconnected, a terminal accommodated in the line exchange may attempt to communicate with a terminal accommodated in the other network. In such a case, conventional circuit switching equipment does not have a function to receive destination terminal numbers in the other party's network with different numbering systems, so after the terminal and the inter-network connection device are connected, the inter-network connection device A terminal number is being received. (In the following explanation, since information processing devices such as computers also appear to be equivalent to terminals when viewed from an exchange, they will be collectively referred to as terminals.) For example, in FIG. When the call is made, the destination number within the circuit exchange is received from the terminal 11. When this destination number is the number of the inter-network connection device 13 that performs interconnection with the partner network 12, the line exchange 1o sends the terminal 1 to the call switch 15 under the control of the central control unit 14.
1 and the network connection device 13, and notifies the network connection device 13 of the incoming call. after that,
The terminal 11 sends the network 12 number of the terminal 16 accommodated in the network 12 to the network connection device 13 through the call switch path. Network connection device 1 that received this number
3 prepares for communication with the terminal 16 according to the number, and then communicates between the terminal 11 and the terminal 16 via the network connection device 13.
Communication will take place.

In FIG. 1, reference numeral 17 denotes an interface circuit provided for terminals that do not correspond to terminals, which detects the call origination, recovery destination number, etc. of the terminal, and notifies the central control unit.

According to this method, only when the notification procedure in which the terminal 11 sends the destination terminal number and the notification procedure in which the inter-network connection device 13 can receive the destination terminal number match, the terminal 11 sends the destination terminal number to the inter-network connection device 13. It is possible to notify the terminal number. However, in circuit switching equipment that accommodates different types of terminals, the notification procedure for sending the destination terminal number is different for each terminal type, and even if these terminals are connected to the internetwork connection device via a call switch, the Except for terminals that use notification procedures that can be received by the connecting device, other terminals cannot notify the inter-network connecting device of the destination terminal number.

Therefore, destination terminals accommodated in other networks connected via the inter-network connection device cannot be specified, and these terminals cannot communicate with terminals accommodated in other networks.

On the other hand, there is a method in which an inter-network connection device is installed for each terminal type, that is, corresponding to the notification procedure, and the central control unit selects and connects to the inter-network connection device depending on the type of calling terminal. However, such a method has the disadvantage that it requires the installation of multiple types of network connection devices, which tend to become complicated and expensive due to complex processing such as converting terminal number 1 communication procedures. has. Furthermore, the central control unit must manage the terminal type and select the network connection device to be connected by referring to the information representing the terminal type when making a call, which increases the complexity of the central control unit software. This has disadvantages such as an increase in the load on the central control unit and a decrease in processing capacity. Furthermore, the increasing complexity of software makes development, maintenance, etc. difficult.

(Objective of the Invention) The present invention overcomes such drawbacks in the prior art and adds destination terminal number reception/transmission functions and these control functions to an interface circuit provided in a line exchange that does not support terminals. It is an object of the present invention to provide a destination terminal number notification method that is economical and allows destination terminal numbers to be notified from two various terminals to an inter-network connection device without complicating the processing of the central control unit. It is.

(Structure of the Invention) According to the present invention, a communication network that accommodates a plurality of terminals (first terminal group) with different terminal number notification procedures and is further accommodated in another communication network via an inter-network connection device. A destination number notification method for a circuit exchange used in a circuit exchange that connects with a terminal group (second terminal group), in which one of the first terminal group (originating terminal) and the destination terminal of the terminal A destination terminal number indicating one terminal (destination terminal) of the second terminal group according to the number notification procedure is received, and the received destination terminal number is sent to the destination terminal number notification procedure (standard child JIFj) in the circuit exchange. ) is converted into a destination terminal number indicating the called terminal according to A destination number notification method for a line exchange is obtained, which is characterized by notifying an inter-network connection device.

(Example) Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIGS. 2(1) and 2(2) are explanatory diagrams showing an embodiment of the present invention. In FIG. 2, a terminal interface circuit 20 is installed in an unsupported terminal and has a terminal interface function, a destination terminal number receiving function, a destination terminal number transmitting function, and these control functions, and an interface circuit 21. Destination terminal number receiving circuit 22. It is composed of a destination terminal number transmission circuit 23 and a control circuit 24. Note that the interface circuit 21 has approximately the same 48 functions as the interface circuit 17 in FIG.

Now, in FIG. 2 (1), the line exchange 10 is the terminal 1
1 makes a call, it passes through the entire interface circuit 21 and receives the line exchange number g from the terminal 11.

When this destination number is the number of the inter-network connection device 13 that performs interconnection to the other party's network 12, the line exchange 1O, under the control of the intermediate control unit 14, connects the terminal 11 and the inter-network connection device to the communication switch 15. 13 is set, and the incoming call is routed to the inter-network connection device 13. Thereafter, the control circuit 24 of the terminal interface circuit 2O receives the number of the destination terminal 16 in the network 12 from the terminal 11 using the destination terminal number receiving circuit 22. Next, the control circuit 22
Using the destination terminal number transmission circuit 23, this number is sent to the network connection device 13 through the call switch path at the communication speed.

The destination terminal number notification procedure within the exchange has standardized codes, error detection, and retransmission methods. In the manner described above, the terminal interface circuit 20 notifies the network connection device 13 of all destination terminal numbers.

When the network connection device 13 receives the destination terminal number, it connects the terminal 1
Prepare for communication with 6.

On the other hand, the terminal interface circuit 20 connects the terminal 11 and the network connection device 13 through the communication switch path.

After that, terminal 11 and terminal 1 are connected via network connection device 13.
6 (FIG. 2 (2)).

In the above description, the intra-exchange destination terminal number notification procedure is provided separately from the notification procedures used by individual terminals, but it is also conceivable to make it coincide with one of the notification procedures used by the terminals. In this case, in the terminal interface circuit corresponding to the terminal that uses the same notification procedure as the destination terminal number notification procedure in the exchange, the destination terminal number receiving circuit.

- No destination terminal number transmission circuit or control circuit is required.

Further, in the above description, the control circuit 24 is provided for each terminal interface circuit, but if processing capacity is available, a configuration in which one control circuit is in charge of a plurality of terminal interface circuits is also possible.

(Effects of the Invention) As can be seen from the above, according to the present invention, the terminal interface circuit provided in the end-incompatible terminal receives the destination terminal number sent by the terminal according to the notification procedure specific to each terminal type. Once received, this is notified to the Myanmar-Myanmar connection device according to the destination terminal number notification procedure within the exchange. Therefore, with regard to destination terminal number reception, the inter-network connection device can receive destination terminal numbers from various terminals as long as it can receive the destination terminal number notification procedure within the exchange. In addition, the network connection device can receive the destination terminal number without being aware of the communication procedure used to notify the destination terminal number from the υ terminal for each communication request. be.

Further, the intermediate control unit performs only the basic functions of the line exchange, such as calling processing, setting of call switch route, and communication completion processing, and is not involved in processing related to destination terminal number notification within the other party's network. Therefore, the processing during connection control does not become complicated, and problems such as an increase in the load on the medium heat control section and a decrease in processing capacity do not occur.In addition, there are no difficulties in developing and maintaining the central control section software. It will not increase.

Furthermore, by using the present invention, even in an existing line exchange, by providing the interface circuit with the destination terminal number reception/transmission function and these control functions, the hardware of the line exchange intermediate control section, All the functions of notifying the destination terminal number from various terminals to the network connection device can be easily realized without making any changes to the software.

These can be achieved by clearly separating the basic functions of the line exchange, such as setting call switch routes, and the functions related to notification of the destination terminal number within the other party's network, into the central control section of the line exchange and the terminal interface circuit. As a result,
In this way, the entire system can be made flexible and simple.

As explained in detail above, according to the present invention, by adding destination terminal number reception/transmission functions and these control functions to the interface circuit provided for terminals in a line exchange, economical and economical improvements can be achieved. Moreover, the effect is remarkable because it becomes possible to notify the destination terminal number from various terminals to the network connection device without complicating the processing of the central control unit.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a destination terminal numbering system in a conventional circuit switch; FIG. 2 is an explanatory diagram showing an embodiment of the present invention. In the figure, 10 is a circuit switch; is the terminal, 1
2 is a communication network, 13 is an inter-network connection device, 14 is a central control unit,
15 is a call switch, 2o is a terminal interface circuit,
21 is an interface circuit, 22 is a destination terminal number receiving circuit, 23 is a destination terminal number transmitting circuit, and 24 is a control circuit.

Claims (1)

[Claims] A communication axis terminal that accommodates a mixture of multiple terminals (first terminal group) with different terminal number notification procedures via an end membrane interface circuit and is further accommodated in another communication network via an inter-network connection device. In a circuit exchange destination terminal number notification method used in a circuit exchange that connects with a group of terminals (a second terminal group), one of the first terminal groups (originating terminal) transmits the destination terminal number of the terminal. said second in accordance with the notification means procedure.
A terminal interface circuit corresponding to the originating terminal receives a destination terminal number indicating one terminal (destination terminal) of the terminal group, and the received destination terminal number is transmitted according to the destination terminal number notification procedure (standard procedure) within the circuit exchange. convert it into a destination terminal number indicating the destination terminal, set a call switch route between the originating terminal and the network connection device, and connect the destination terminal number according to the standard procedure via the call switch route. A destination terminal signal notification method for a line exchange, which is characterized by notifying a device.