JPH01212163A - Communication control system - Google Patents

Abstract

PURPOSE:To simplify a constitution by analyzing a called address in a calling signal with a centralized control station, selecting an incoming terminal, sending an incoming signal to the incoming terminal with a subscriber signal line, which passes through a subscriber line exchange, and setting a communication path between an outgoing terminal and the incoming terminal. CONSTITUTION:The calling signal to be transmitted by a terminal 11 is directly transferred to a centralized control station 3 by a subscriber signal line 131, which passes through a subscriber line exchange 21. The centralized control station 3 selects an incoming terminal 12 by analyzing the called address in the calling signal and samely as the outgoing terminal 11, the terminating call signal is sent to the terminating terminal 12 by a subscriber signal line 132 to pass through a subscriber line exchange 22. Then, the communication path is set between the outgoing and terminating terminals 11 and 12. Thus, a subscriber line signal processing or a subscriber condition control, etc., are eliminated for the subscriber line exchange 21 connected to the terminal 11, or a base station. Further, since subscriber data are controlled with concentration in the centralized control station 3 and routing control is executed, even when a received exchange is changed attending to the moving of a subscriber, such a case can be made correspondent by rewriting the subscriber data of the centralized control station 3.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to terminals in terrestrial communication networks and satellite communication networks,
This relates to a connection control method for switching equipment.

(Conventional technology) In conventional communication networks, the connection between terminals and subscriber line exchanges is
Control signals are sent and received using the subscriber line signaling method, and after the subscriber line exchange receives the signal from the terminal, it analyzes the other party's number to determine the next exchange to connect to, and communicates between the exchanges. The communication path is sequentially connected under control using the interoffice signaling system, and finally the subscriber line exchange on the destination side analyzes the status of the destination terminal, and if the call can be received, converts it back to the subscriber line signaling system. A link-by-link connection method was used, in which an incoming call was made to the destination terminal and a communication path was established between the originating and terminating terminals.

However, in this method, the called party is called after all intra-network communication channels have been set up, so if the called party is busy, the intra-network communication channels are held up unnecessarily.

Another disadvantage is that each exchange must immediately terminate signals from the previous system and transfer the signals to the subsequent system while performing call processing such as routing.

(Problems to be Solved by the Invention) The present invention was made in view of the above-mentioned drawbacks, and it is possible to rewrite subscriber data in the central control station even if the accommodating exchange is changed due to the relocation of subscribers. In addition, by registering a personal telephone number from a terminal close to one's own, it is possible to easily provide a personal telephone service that allows calls to be received from a terminal near one registered with that personal number. The objective is to provide a control method.

(Means for Solving the Problems) The present invention provides a centralized control station that manages the connection status of the exchange and the status of the terminal without terminating signals from terminals or processing calls in subscriber line exchanges or trunk exchanges. establishes a communication path between the terminals by transmitting and receiving signals directly to and from the terminals and instructing the exchange to connect the communication path.

That is, the present invention has a terminal having an out-channel subscriber line signaling system, a subscriber line exchange having a function of transferring the out-channel signal, and data on the connection status of the terminal and the line usage status between each exchange, and the terminal In a communication network consisting of a centralized control station with control and exchange control functions,
The calling signal sent by the terminal is directly transferred to the central control station via the subscriber signal line via the subscriber line exchange, and the central control station selects the destination terminal by analyzing the destination address in the calling signal. However, like the originating terminal, an incoming call signal is sent to the terminating terminal via the subscriber signal line via the subscriber line exchange, and a communication path is established between the originating and terminating terminals.

The present invention also provides terminals with an out-channel subscriber line signaling system, a satellite base station with an out-channel signal transfer function, data on the connection status of the terminals and line usage status between each exchange, and terminal control. In a communication network consisting of a satellite centralized control station with a switch control function and a communication satellite that enables communication between the satellite base station and the satellite centralized control station, the calling signal transmitted by the terminal is routed through the satellite base station. The call is transferred directly to the satellite central control station via the subscriber signal line, and the satellite central control station selects the destination terminal by analyzing the destination address in the calling signal, and transmits the call via the satellite base station in the same way as the calling terminal. A satellite communication channel is established between the originating and terminating terminals by sending an incoming call signal to the terminating terminal via the subscriber signal line and instructing the originating and terminating satellite base station to connect the satellite communication channel.

(Embodiment) FIG. 1 is a system configuration diagram of a terrestrial communication network according to an embodiment of the present invention. is the originating terminal, 1□ is the destination terminal, 2I
is the originating subscriber line exchanger; 2. is a destination subscriber line converter, 3 is a central control station, 4 is a subscriber line signal device, 53, 5□ is a subscriber signal line, 6 is a control device, 7 is a subscriber data management unit, and 8 is network data A management section, 9 an interoffice communication path, 10 a trunk switch, 11 a switch control signal device, 12 a switch control line, 131, 13! is the subscriber communication channel.

The connection control method from the originating terminal to the terminating terminal will be explained in detail below with reference to FIG. The calling signal transmitted by the originating terminal II passes through the subscriber line exchange 2I and is sent to the subscriber signal line 5. which is connected to the subscriber line signaling device 4 of the central control station 3. sent to. The calling signal received by the subscriber line signaling device 4 is transferred to the control device 6. The control device 6 accesses the subscriber data management unit 7, checks the communication status of the subscriber indicated by the address of the calling signal, and if the subscriber is in communication with another subscriber, the calling terminal 1. A busy display is displayed on the device, and the process ends. When the other subscriber is ready to receive a call, accesses the network data management unit 8 and determines the connection route between all subscriber line exchanges 21 and the destination subscriber line exchange 2□ and the connection line number of the interoffice communication path 9. do. Thereafter, the line number to be used for the inter-office communication path 9 to be connected is sent to all subscriber line exchanges 2I, the destination subscriber line converter 2□, and the trunk line exchange 9 from the exchange control signal device 11 to the exchange control line 1.
Notify through 2. The trunk switch 10 has an interoffice communication path 9
connection to all subscriber line exchanges 2. is subscriber channel 1
3+ and the interoffice communication path 9, a connection completion signal is sent to the exchange control signal device 1 through the exchange control line 12.
Return it to 1. The control device 6 is connected to the originating and terminating subscriber line exchange 21.
After confirming that the communication path between 2□ is connected, the subscriber line signaling device 4 transmits an incoming call signal to the destination terminal 12 through the subscriber signal line 5□. Destination terminal 1! When the terminal 1 responds, it instructs the terminating subscriber line converter 22 to connect between the interoffice communication path 9 and the subscriber line communication path 132.
Communication is possible between □1□.

By adopting this configuration, the originating and terminating subscriber line exchanges do not need to process subscriber line signals, and the central control station manages subscriber status, network exchanges, and transmission path usage status. Even if the called party is busy, the communication channel is no longer set to invalid, and furthermore, it becomes possible to select the optimum route within the network and set the communication channel.

FIG. 2 is a system configuration diagram of a satellite communication network according to another embodiment of the present invention. , 20□ is a base station, 21 is a satellite centralized control station, 22 is a communication satellite, 23. , 23□ is a base station control line, and 24 is a satellite communication channel.

In this embodiment, the originating and terminating subscriber line exchange 8!2. , 2. instead of the departure and arrival base station 20. , 20z will be installed. The satellite centralized control station 21 is functionally identical to the centralized control station 3 shown in FIG. 1, but has a built-in antenna and satellite communication device so that it can communicate with each base station.

A communication path can be arbitrarily set between these base stations 20 and the satellite centralized control station 21 using the communication satellite 22. Subscriber signal lines 5I, 5□, base station control 'lA23I-23
g is fixedly connected to the satellite centralized control station 21. By setting up the satellite line in this way, the satellite central control station 21
transmits the subscriber line signal of each terminal 1t+1g to the communication satellite 22.
It can transmit and receive data through the base station control line 231.23□ and the base station 20. , 20□ subscriber communication path 13I, 1
3! and the connection of the satellite communication channel 24 can be instructed.

In this way, by using the satellite communication system, subscriber signal lines and base station control lines can be easily connected between the satellite centralized control station 21 and the base station 20. , 20□, it is possible to easily construct a communication system, and it is also possible to immediately respond to the addition of base stations.

Further, in the satellite communication system, it is possible to directly select the satellite communication channel 24 between base stations, so there is an advantage that the communication channel can be easily set.

As explained above, it can be seen that the control method according to the present invention can be easily applied to a satellite communication system.

(Effects of the Invention) As explained above, by using the control method according to the present invention, there is no need for subscriber line signal processing, subscriber status management, etc. in the subscriber line exchange or base station connected to the terminal. Furthermore, since subscriber data is managed centrally and routing control is performed at the central control station, even if the accommodating exchange is changed due to the relocation of a subscriber, it can be handled by rewriting the subscriber data at the central control station. This is possible, and can prevent service deterioration that would otherwise occur in the past due to changing phone numbers. Furthermore, by registering a personal telephone number from a terminal close to the user, it becomes possible to easily provide a personal telephone service that allows calls to be received from a terminal near the user registered using the personal number.

Furthermore, network data is also managed collectively at the central control station.
There is an advantage that dynamic routing control that arbitrarily changes the communication route depending on the traffic communication situation within the network can be easily performed.

The present invention is based on the out-channel subscriber line signaling system, but specifically, the LSI standardized by CCITT is used.
This can be realized using a 5DN user network interface.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of a terrestrial communication network according to one embodiment of the present invention, and FIG. 2 is a system configuration diagram of a satellite communication network according to another embodiment of the present invention. 1□12...terminal 28, 2□...subscriber line exchange 3...central control station 4...subscriber line signal device 5□5□...subscriber signal line 6...control Device 7
...Subscriber data management unit 8...Network data management unit 9...Interoffice communication path 10...Trunk line switch 11...Switch control signal device 12...Switch control line

Claims (1)

[Claims] 1. A terminal having an out-channel subscriber line signaling system;
In a communication network consisting of a subscriber line exchange that has the function of transferring out-channel signals, and a centralized control station that has data on the connection status of terminals and the line usage status between each exchange, and has terminal control and exchange control functions, The calling signal sent by the terminal is sent directly to the subscriber line via the subscriber line exchange.
The central control station selects the destination terminal by analyzing the destination address in the calling signal, and sends the call to the destination terminal via the subscriber signal line that passes through the subscriber line exchange, similar to the originating terminal. A communication control method characterized by sending an incoming call signal and setting up a communication path between calling and receiving terminals. 2. A terminal having an out-channel subscriber line signaling system;
A satellite base station that has an out-channel signal transfer function, a satellite centralized control station that has data on terminal connection status and line usage status between each exchange, and has terminal control and exchange control functions, and a satellite base station and satellite In a communication network consisting of communication satellites that enable communication between centralized control stations, the calling signal sent by a terminal is directly transferred to the satellite centralized control station via a subscriber signal line via a satellite base station. The control station selects the destination terminal by analyzing the other party's address in the calling signal, and sends an incoming call signal to the destination terminal via the subscriber signal line that goes through the satellite base station in the same way as the originating terminal. A communication control method characterized by establishing a satellite communication path between departure and arrival terminals by instructing a base station to connect the satellite communication path.