JP2536380B2 - Audible sound control method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audible sound control method for an ISDN digital exchange, and more particularly to an audible sound control method for controlling various audible sound outputs separately from call control.

[0002]

2. Description of the Related Art In recent years, ISDN digital exchanges have come to provide complicated exchange services with high added value, and accordingly, call states in various exchange supplementary services so that users can operate more smoothly. It has become necessary to accurately notify the user of the transition using a talkie (voice).

Conventionally, audible sound control in such an ISDN digital exchange has been performed by a switching supplementary service realized in a call control device for controlling various calls. This is because, at the audible sound connection trigger in the state transition of a call, the call control device indicates the contract information of the audible sound service for each subscriber terminal stored in the storage device, the transmission capability of the subscriber terminal, and the type of communication protocol. By referring, the audible sound circuit to be connected to the subscriber and the accommodation position thereof are determined, and a request for capturing the audible sound circuit based on this is directly output to the resource management device,
When the audible sound circuit is successfully captured, a switch control request including the accommodating positions of the audible sound circuit and the subscriber terminal is output to the switch control unit to connect the audible sound circuit to the subscriber terminal.・ Disconnection, that is, audible sound output / stop control was performed.

[0004]

Therefore, in such a conventional audible sound control method, each subscriber terminal has its own
Different types of call control procedures, namely conventional POTS (Pl
ain Old Telephone Service
e) and different incompatible communication protocols such as ISDN
Because it was supposed to be controlled individually corresponding to Col,
When selecting an audible tone circuit to connect to any subscriber terminal
Are added individually by the switching supplementary service in the call control unit.
It recognizes the communication protocol that is compatible with the terminal
In addition, the audible sound circuit must be properly selected and controlled accordingly.
Individual audible sound control for each communication protocol
Needing control and complicating the exchange supplementary service
It was.

In addition, in the exchange additional service, it is necessary to recognize the type of the audible sound, for example, whether the audible sound to be output is a tone or a talkie, and then perform the connection control process for each of the audible sounds. There is a problem that a control function is required for each combination of service and audible sound types, and the entire system of the exchange becomes complicated. The present invention is intended to solve such a problem, and communication that each subscriber terminal has
It is an object of the present invention to provide an audible sound control method that can simplify exchange supplementary services without depending on a protocol .

[0006]

In order to achieve such an object, an audible sound control method according to the present invention includes a protocol control unit for mutually converting interface information for internal call control and various call control messages. When the audible sound output instruction is output from the protocol control unit, a means for outputting an audible sound control instruction to the corresponding subscriber terminal based on the protocol control information indicating the current internal processing state and the interface information is provided. , Determines the type of audible sound circuit that contains the audible sound to be sent to the subscriber terminal based on the information necessary for audible sound control included in this instruction, and captures and activates any audible sound circuit corresponding to this. Then, the connection path between the subscriber terminal and the captured audible sound circuit is controlled to send out an audible sound, and the connection state between the subscriber terminal and the audible sound circuit is stored, When the audible sound stop instruction is output from the rotocol control unit, the communication path between the subscriber terminal and the audible sound circuit connected to the subscriber terminal is cut off and is being sent based on the stored contents related to the connection status of the subscriber terminal. The audible sound is stopped and the connection status of the subscriber terminal is updated.

[0007]

Therefore, the audible sound control information for the subscriber terminal is extracted based on the audible sound control instruction to the subscriber terminal based on the protocol control information indicating the current internal processing state and the interface information, and based on this, information is extracted. Audible sound transmission / stop control is performed.

[0008]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram relating to audible sound control in an ISDN digital exchange which is an embodiment of the present invention. In FIG. 1, 1 is a call control message inside the exchange .
Call controller for call control including various exchange supplementary service using a predefined interface information Te, 2 subscriber terminal based on the communication protocol corresponding to the subscriber terminal 3
Communicates with the end 3, a protocol controller Ru a function to convert mutually the common interface independent information to the call control messages and various communication protocols based on the communication protocol. This protocol system
The device 2 enables compatibility due to differences in communication protocols.
Unified call interface with no call control messages
Since the information and the information are mutually converted, the call control device 1 has various
Need to support call control messages of other communication protocols
There is no call control corresponding to interface information
Subscriber end having various communication protocols by performing
It becomes possible to perform the call control of the end 3.

Further, 8 is an audible sound circuit for outputting various audible sounds, and 5 is a memory for storing an audible sound control instruction from the protocol control device 2 and a current connection state of the audible sound circuit 8 provided in the device itself. The audible sound control device 4 which selects an appropriate audible sound circuit 8 based on the stored contents of the audible sound connection state storage device 6 captures the empty audible sound circuit 8 in response to the audible sound circuit capture request from the audible sound control device 5. Resource management device, 7
Is a switch control circuit for controlling connection / disconnection of a communication path connecting the audible sound circuit 8 and the subscriber terminal 3 by controlling a communication path system switch (not shown).

Now, when a call control message for storing call control information is output from the subscriber terminal 3 based on a predetermined communication procedure, that is, a communication protocol, this message is received by the protocol control device 2 and then this exchange. It is converted into interface information common to each communication protocol for internal call control and output. The call control device 1 analyzes this interface information and outputs the interface information based on this result, and the protocol control device 2 receives it and converts it into a call control message based on a predetermined communication protocol and converts it into a subscriber terminal. By outputting the result to 3, the various call controls including the exchange supplementary service are performed.

Further, the protocol control device 2 joins from the protocol control information indicating the processing state transition in the own device which changes based on the call control message from the subscriber terminal 3 or the interface information from the call control device 1. The audible sound output / stop for the subscriber terminal 3 is determined, the service contract information for the subscriber terminal 3, the bearer capability indicating the bearer service requested by the subscriber terminal 3, the call setup failure from the call control message and the interface information. Information for determining the audible sound to be output, such as a reason display (hereinafter referred to as “cause”) indicating the cause and a signal indicating the instruction to generate a ringing sound (hereinafter referred to as “signal”) is stored and read. It is sent to the audible sound control device 5 as a control instruction.

In response to this, the audible sound control device 5 receives the service contract information and bearer capability in the audible sound control instruction, and the subscriber corresponding to the subscriber terminal 3 read from the main storage device (not shown). Based on the management information (audible sound transmission priority order, etc.), whether or not to connect the audible sound circuit to the subscriber terminal 3 and the type of audible sound to be connected (tone / talkie, etc.) are determined, and in the audible sound control instruction cause
The type of the audible sound circuit 8 to be connected is determined based on e, signal and the type of the interface message with the protocol control device 2. Thereby, the audible sound to be connected and its contents are selected in detail, for example, depending on whether or not the subscriber terminal 3 is provided with the talkie service, or whether the talkie service is in Japanese or English. It

FIG. 2 is a block diagram of a reference table used to determine the audible sound circuit 8 in the audible sound control device 5. In the figure, 21 is an audible sound type (tone / talkie, etc.)
First table indexed by, 22 is cause
A second table group consisting of a plurality of tables indexed by the value of, a third table group consisting of a plurality of tables indexed by the value of signal,
Reference numeral 24 denotes a fourth table group composed of a plurality of tables indexed by the type of interface message. Each table other than the fourth table group stores the start address of the table to be referred to next. A hierarchical structure is configured by.

Now, when the audible sound control device 5 determines an appropriate type of the audible sound circuit 8 corresponding to the audible sound control instruction received from the protocol control device 2, first, the first table 2 is used.
The second table group 22 to be referred to next based on the audible sound type already determined based on the audible sound control instruction with reference to FIG.
The corresponding top address of the table 222 is read. Next, referring to this table 222, the head address of the corresponding table 232 of the third table group 23 is read based on the value of cause in the interface information.

Further, referring to the third table group 23, the corresponding table 2 of the fourth table group 24 is also based on the value of signal in the interface information.
The leading address of 41 is read. Finally, by referring to this table 241, by reading the type of the audible sound circuit 8 based on the type of the interface message with the protocol control device 2, it is possible to appropriately respond to the audible sound control instruction received from the protocol control device 2. The type of the audible sound circuit 8 is determined.

Subsequently, the audible sound control device 5 causes the audible sound circuit 8 determined by the audible sound circuit type determination processing as described above.
Based on the type, the resource management apparatus 4 is requested to capture the audible sound circuit 8, and in response to this request, the resource management apparatus 4 selects and captures the audible sound circuit 8 that matches the audible circuit type. After that, the audible sound control device 5 outputs a connection request including the accommodation position information of the audible sound circuit 8 selectively captured by the resource management device 4 and the accommodation position information of the subscriber terminal 3 to the switch control circuit 7, and After the connection control processing of the communication path switch (not shown) by the switch control circuit 7 based on the connection, the audible sound circuit 8 for the subscriber terminal 3 is connected to the audible sound connection control storage device 6 in the audible sound control device 5. Remember the situation.

When the audible sound control instruction from the protocol control device 2 indicates a disconnection request of the audible sound, the audible sound control device 5 refers to the audible sound connection control storage device 6 and corresponds to the subscriber terminal. 3 is searched for the audible sound circuit 8 currently connected, and based on this, a request for disconnecting the communication path switch is output to the switch control circuit 7, and the resource management device 4 releases the resource for the audible sound circuit 8. After outputting the request, the stored content of the audible sound connection control storage device 6 corresponding to the subscriber terminal 3 is set to the disconnected state.

[0018]

As described above, according to the present invention, the audible sound circuit to be controlled according to the audible sound control instruction output from the protocol control device based on the protocol control information indicating the processing state transition in the self device. The call control device controls the transmission of audible tones to the subscriber terminal by sending a connection / disconnection request to the switch control circuit based on this determination. No separate audible sound transmission control is required for different subscriber terminals. Therefore, in the audible sound control method in the electronic exchange, the communication protocol can be completely virtualized for the call control, and the call control to the audible sound control processing for the switching supplementary service that requires complicated audible sound control. It is possible to eliminate the above, and it is possible to realize a reliable exchange processing operation with a high response speed, and further it is possible to improve the development efficiency of various exchange supplementary services.

[Brief description of drawings]

FIG. 1 is a block diagram of an ISDN digital exchange according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a reference table used for determining an audible sound circuit.

[Explanation of symbols]

 1 call control device 2 protocol control device 3 subscriber terminal 4 resource management device 5 audible sound control device 6 audible sound connection state storage device 7 switch control circuit 8 audible sound circuit 21 first table 22 second table group 23 third table group 24 Fourth Table Group

Claims (1)

(57) [Claims] 1. A call control message from each subscriber terminal accommodated.
Has a call control device that controls subscriber call according to the sage
In the ISDN digital exchange that is provided, each subscriber terminal is provided between the call control device and an individual subscriber.
Various types that depend on any communication protocol that the entrance terminal has
Exchange between call control messages and call control equipment
Interface information that does not depend on the communication protocol
Mutually converting protocol control part, and sending various audible sounds and responding to possible audible sounds
A plurality of audible sound circuits that have been classified by type, and a predetermined audible sound circuit and a predetermined audible sound circuit according to a predetermined audible sound control instruction.
And an audible sound control device for controlling connection with an intruder terminal, wherein the protocol control unit is a protocol control information indicating a current processing state transition in the own device.
Any subscription based on the report and the interface information
Able to instruct sending / stopping of predetermined audible sound to the user terminal
An audible sound control instruction is output to the audible sound control device, and the audible sound control device responds to the audible sound control instruction to instruct audible sound transmission.
While determining the type of audible sound circuit that has a hearing sound,
Capture and activate any audible circuit that belongs to
Connect the communication path connecting the audible sound circuit and the subscriber terminal
While transmitting the audible sound to the subscriber terminal,
The connection state between the audible sound circuit and the subscriber terminal is stored, and the addition is performed in response to an audible sound control instruction for instructing to stop the audible sound.
Based on the memory contents related to the connection status of the entrance terminal,
A call path connecting the audible circuit connected to the subscriber terminal
While disconnecting and stopping the audible sound being sent,
An audible sound control method characterized in that a connection state of a subscriber terminal is initialized .