JPH0654993B2 - Exchange control method - Google Patents

Description

The present invention relates to a switching control of a time-division switch that accommodates and connects at least one of a terminal line and a relay line and connects communication lines via a time switch. Regarding the scheme.

[Conventional technology]

In the conventional exchange control system, a time division exchange has a time slot that serves as a connection means of a time switch at a control terminal (physical accommodating position) which is indicated by a communication position of a terminal line or a relay line and is used for connection control. It has a connection control device that specifies a direct connection. A conventional example will be described with reference to FIG. FIG. 4 is a block diagram showing a conventional example. In FIG. 4, the exchange has a line package 11, a time switch 12, a connection control device 94 and a storage device 95.

The line package 11 accommodates and connects a terminal line and a relay line. For example, in a private branch exchange, the terminal line is an extension line, the line package 11 corresponds to a subscriber circuit, the relay line is a station line, and the line package 11 corresponds to a station line trunk. Further, for example, when there are four designated line buttons for one physical terminal for one line to the key telephone, the number of control terminals of the line package 11 is four. The number or position of the control terminal can be obtained from the operation information of the button for which the connection control device 94 is notified from the key telephone via the line package 11. The time switch 12 assigns the control terminals of the line package 11 to one time slot and interconnects them. The connection control device 94 controls the time switch 12 based on the information of the control terminal (for example, dial information from the terminal) received from the line package 11 to execute the exchange connection control of the control terminals. Storage device 9
Reference numeral 5 stores a program and data necessary for the connection control device 94 to operate and has a control terminal table 96. The control terminal table 96 has a storage area in which control terminal information, line status and time slot information (number or position information) are written.

In the control terminal information storage area, if the terminal to be accommodated is a terminal line such as a single-function telephone that has a physical line terminal, the extension number assigned to that line terminal is used as it is for one line like a key telephone. When the physical terminal is one terminal line, a plurality of control terminals (physical accommodation position information) corresponding to the designated line button of the button telephone, and a plurality of heterogeneous terminals are gathered together by the network controller. In the case of a terminal line, each control terminal (accommodation position information) including an additional number given to each terminal is prewritten from the console as part of the station data when accommodating the terminal and the line. For example, when one line 22 has four data terminals 221 to 224 as shown in FIG. 2, terminal numbers 22-1 to 22.4 are given as control terminals and written in the control terminal table 96. Therefore, for example, when a call request is issued from the data terminal 22 (see FIG. 2), the connection control device 94 receives the call information of the control terminal 22.2 from the line package 11, so that the corresponding line state storage area is stored. Record "calling". Further, with respect to one line of the conventional single-function telephone, the extension number given to the terminal for each line is used as it is as one code of the control terminal.

Next, when the connection control device 94 receives the notification of the connection destination from the caller via the line package 11, it selects one of the empty time slots and selects it as the call control terminal and the connection control terminal. The assigned time slot,
The number of the selected time slot is written in the time slot information storage area of the two allocated control terminal columns. The time division switch (time switch) 12 does not matter whether it is a random writing / serial reading method or a serial writing / random reading method. The operation is also known.

Thus, in the conventional exchange control method, when the line is accommodated and connected, the control terminal information corresponding to the line is written in the control terminal storage area of the control terminal table in advance, and in the connection control, the line state storage area of the control terminal table is written. The line status and the time slot information assigned to the time slot storage area are written or erased depending on the event.

[Problems to be solved by the invention]

As described above, the conventional exchange control system is configured such that when a line is accommodated and connected, a control terminal, which is a physical accommodation position for the line, is pre-registered by writing, and a time slot is directly assigned to each of these control terminals. ing. Therefore, the exchange processing program of the connection control device and the information of the storage device that supports its execution are configured based on the control terminal information. Therefore, it is inconvenient because it is necessary to change (rewrite) the exchange program or the control terminal (physical accommodation position) in the control terminal table when installing or expanding the terminal accommodated in the line or the type of line. was there. Further, when one terminal line is provided with a plurality of numbers, the switching control becomes complicated.

The object of the present invention is to solve the above problems and to change the combination of the logic terminal and the control terminal in the logic terminal table without changing the exchange processing program even when the terminal or the trunk line connected to the line is changed. An object of the present invention is to provide an exchange control method capable of executing the exchange process.

[Means for explaining problems]

A switching control system of the present invention is a switching control system for accommodating and connecting at least one of a terminal line to which a terminal is connected and a relay line to which a central line is connected as a line, and performing switching connection processing; A line package which, when an event including a call origination and a call reception is detected, outputs control terminal information indicating a connection terminal position of the line and a physical accommodation position and line state information indicating a state change of the line; A time switch which has at least one data bus, allocates and connects the line that has detected the event to each time slot on the data bus, and a recording device which has a logical terminal table for managing the state of a call; A logic indicating a logical accommodating position of the control terminal information, the number information of the assigned one time slot, and the line state information. Connection for allocating corresponding to each terminal, storing in the logical terminal table of the storage device, and reading the physical accommodation position into the logical accommodation position based on the logical terminal table to control the time switch And a control device.

〔Example〕

Next, the exchange control system of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, the exchange has a line package 11, a time switch 12, a logic terminal 13, a connection control device 14, and a storage device 15, and the storage device 15 has a storage area of a logic terminal table 16. The line package 11 corresponds to a subscriber circuit that accommodates a terminal line connected to a terminal and a station line trunk that accommodates a trunk line. The line package 11 monitors changes in the state of the line and the station line, and monitors the state of the terminal and the line. A change (for example, an event such as a call, an incoming call, communication, a call end) and control terminal information including a physical accommodation position of the line or an extension number is output. The logical terminal 13 is a logical accommodating position on software for allocating the corresponding terminal and line to the time switch when the time switch 12 connects and exchanges in response to the change in the terminal and line states detected by the line package 11. It is a number, for example, a serial number (0 to 255). When the connection control device 14 identifies, for example, the "call request" of the terminal from the control terminal information received from the line package 11, the time slot number and its event type (call origination) are associated with the physical accommodation position number. ) Is stored in the logical terminal table 16 included in the storage device 15. The logical terminal table 16 has storage areas for control terminals, line states, and time slots corresponding to the logical terminal numbers. In the control terminal storage area, the physical accommodation positions of terminals and lines are logical terminal numbers. The number of the time slot assigned when the exchange control is performed on the time switch is stored in the time slot storage area in advance, and the line status storage area stores the event (state Change) is stored. The time switch 12 has at least one bus (not shown), and this bus is divided into, for example, every 8 bits, and a terminal and a line are assigned to each of the divided 8 bits. The connection control device 14 refers to the logical terminal table 16 by the call processing program, converts the control terminal into a logical terminal, and executes a predetermined call processing at the logical terminal.

For example, when calling from an extension accommodated in a subscriber circuit (A) capable of accommodating four terminal lines to an extension accommodated by another subscriber circuit (B) capable of accommodating four lines, the subscriber circuit (A) Detects the state change of this terminal line and notifies the dial information sent by the calling extension to the connection control unit, and the connection control unit determines the calling extension number and the called extension number and their physical accommodation positions in the call processing program. The call origination is stored in the line state storage area corresponding to the control terminal of the logic terminal table 16 identified by. Subsequently, a time slot control circuit (not shown) selects an empty time slot on the data bus, inserts the voice signal (for example, 64 Kbps) of the calling extension A / D converted by the subscriber circuit (A), and controls connection. Device 14
Notify the time slot number inserted in. The connection control device 14 extracts the voice signal of the calling extension from the notified time slot number, connects it to the subscriber circuit (B), and corresponds to the control terminal which is the physical accommodation position of the calling extension in the logical terminal table 16. The time slot number is stored in the time slot storage area. The subscriber circuit (B) D / A converts the received voice signal from the calling extension and connects it to the called extension. Similarly, the voice signal from the called extension is selectively inserted into an empty time slot different from the time slot number in which the voice signal of the calling extension is inserted, and at the physical accommodation position of the called extension of the logical terminal table 16. "Incoming call" is recorded in the corresponding line state storage area, and the connection control device 14 that has received the notification of the time slot number extracts the voice signal of the called extension inserted on the data bus and the subscriber circuit (A). And the time slot number is stored in the time slot storage area corresponding to the physical accommodation position of the called extension in the logical terminal table 16. Note that the caller voice and the callee voice are inserted on the data bus alternately every half cycle of a predetermined clock, and the extraction of the caller voice and the callee voice is synchronized with the inserted clock. Insertion is performed in the first half and extraction is performed in the second half.

If the data bus is composed of two data buses, an up data bus and a down data bus, the voice signal from the calling extension and the voice signal from the called extension have the same time respectively. It is inserted at the position of the slot number, and the connection control device 14 extracts each voice signal from the time slot number and sends it to each subscriber circuit. Therefore, the same time slot position is recorded in the time slot storage area corresponding to the control terminals, which are the physical accommodation positions of the calling extension and the called extension of the logical terminal table 16, and the line state storage area stores " “Communicating” is recorded, and the connection control device prepares a call processing program (for example, hold, call end) to be executed next. In the control terminal storage area of the logical terminal table 16 which is the physical accommodation position of the calling extension, the package number (eg “0”) of the subscriber circuit package (A) and its accommodation position number (eg “1”).
Are registered as "0" and "1", and the package number (for example, "1") of the subscriber circuit package (B) and its accommodation position number are stored in the control terminal storage area which is the physical accommodation position of the called extension. (For example, "3") is entered as "1" / "3". As described above, in the control terminal storage area of the logic terminal table 16 when the subscriber circuit having the four-circuit configuration is used, "0" / "0" -corresponding to the logic terminal numbers "0"-"255".
"0" / "3", "1" / "0" to "1" / "3" ...
The subscriber circuit is registered as
In the circuit configuration, the control terminal storage area of the logic terminal table 16 is set to "0", "0" to "0", "7", "1" corresponding to the logic terminal numbers "0" to "255".・ “0” ～
By simply changing the registration to "1", "7", etc., it is possible to deal with the relocation and change of hardware without changing the call processing program.

FIG. 2 is a block diagram showing an example of a connection system for transmitting control terminal information via the line package of FIG. In FIG. 2, the same components as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. In FIG. 2, the line package 11 connects the key telephone 21 and the network control device 22 via the terminal line 20. The key telephone 21 has line buttons 1 to 4. The network control device 22 includes data terminals 221-
224 is connected. The line package 11 has a line circuit 111 connected to the key telephone 21, and a line circuit 112 connected to the network controller 22. The line circuits 111 and 112 monitor the key telephone 21 and the data terminals 221 to 224, respectively. When a change in the status of the terminal line 20 is detected, an event (for example, a call request) together with the physical accommodation position information of the terminal or the line as control terminal information
The information is transferred to the connection control device 14. Connection control device 14
Identifies the terminal or line from these control terminal information, identifies the physical accommodation position in which the terminal or line is accommodated, and sets the same control terminal (physical accommodation position) as the identified accommodation position to the logical Search from the control terminals registered in advance in the terminal table 16 corresponding to the logical terminal numbers,
The line status storage area corresponding to the searched control terminal stores the event status (calling), and the time slot storage area stores the number of the time slot to which the calling event is assigned. For example, when the line button 1 is operated on the key telephone 21, the call information indicating that "call by the line button 1" is output from the key telephone 21.
The line circuit 111 of the line package 11 accommodates the key telephone 21 via one line of the terminal line 20, detects a change in the state of the key telephone 21, and detects the physical accommodation position information of the key telephone 21 (for example, 22.1) and its event information (call origination) are output to the connection control device 14. Similarly, when the data terminal 222 makes a call, the physical accommodation position information 22.2 and its event information (calling) are output to the connection control device 14.

FIG. 3 is a block diagram showing an example in which information is recorded in the storage area of the logic terminal table of FIG. The recorded contents will be described with reference to FIG. 3 and FIG. FIG. 3 shows a logic terminal table in the case where the above-mentioned data bus is composed of two data buses, an up data bus and a down data bus. Control terminal information 22.1, 21 ... 1, ..., On-line talking, on-hold, ... And time slot information 131, 123 ,. Since the logical terminal 1 uses the same time slot 131 as the recording of the storage area column of the logical terminal 5, communication is being performed between the control terminal 22.1 and the control terminal 24.1 from the recording of the control terminal storage area. Indicates that there is. Logic terminal 2 indicates that the button telephone 21 of FIG. 2 is holding the line button 1 with the allocation of the time slot 123. The logic terminal 3 indicates that the line button 2 of the key telephone 21 is calling and the line button 1 of another key telephone 26 (not shown) is ringing through the time slot 241. The logic terminal 6 shows the state in which the connection is released and the record is erased. The logic terminal 7 has a time slot 15 regardless of whether the line buttons 1 and 2 of the key telephone 21 are on hold or calling.
It shows that the incoming call was made via 6. The logic terminal 8 indicates a state where a call is made from the control terminal 22.2 but the connection destination information is not yet received.

Control terminals can be assigned to the logic terminals for both incoming and outgoing calls. Further, since a plurality of logic terminals can be assigned to the same control terminal, it is possible to diversify the exchange service.

In the above embodiment, the logical terminal is illustrated between the line package and the time switch in FIG. 1 so that the connection control device controls the connection. However, in reality, the logical terminal number (logical terminal) on the software is described. Corresponding to, the storage device is provided with a logical terminal table for recording physical accommodation position information (control terminal) notified from the line package and time slot information allocated when performing exchange control on the time switch,
Since the connection control device executes the call connection processing by designating the logical terminal number of the logical terminal table by the call processing program, the hardware of the logical terminal 13 does not exist.

As described above, according to the present invention, the control terminal (physical accommodation position) is not directly connected and controlled by the call processing program in the call processing, but the physical accommodation position is changed to the logical accommodation position by using the logical terminal table. The connection data is converted to and controlled for connection, so the combination data of the logical terminals and control terminals in the logical terminal table can be changed from an external console without changing the call processing program even when adding or changing the line configuration or heterogeneous terminals. It can be easily dealt with. Normally, in the connection control device according to the above-described embodiment, for example, a microcomputer executes control operation processing by making full use of programs and data in a main storage device, and a storage area for logical terminal information and a program making full use of this storage information. With the above, the above function can be realized. Therefore, the description of the above embodiments is not intended to limit the present invention.

〔The invention's effect〕

As described above, the exchange control system of the present invention creates a logical terminal table that stores physical accommodation positions of terminals and lines and time slots to be connected, corresponding to logical control terminals (logical terminals). In preparation for the storage device, the logical terminals are interposed between the physical accommodation position and the time slot allocation, so there is no need to change the exchange processing program or control terminal table as in the past even if the types of terminals and lines are added or changed. In addition, since a plurality of logical control terminals can be assigned to the same physical control terminal, various service function processes can be easily performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the exchange control system of the present invention, FIGS. 2 and 3 are block diagrams showing an example of partial details of FIG. 1, and FIG. 4 is a block showing an example of a conventional technique. It is a figure. 11 ... Line package (control terminal), 12 ... Time switch (time slot), 13 ... Logic terminal, 14
...... Connection control device, 15 ...... Storage device, 16 ...... Logical terminal table, 20 ...... Terminal line, 21 ...... Button telephone, 22
...... Network controller, 111, 112 ...... Line circuit, 141
...... Control terminal identification means.

Claims (1)

[Claims] 1. A switching control system for accommodating and connecting as a line at least one of a terminal line to which a terminal is connected and a relay line to which an office line is connected; A line package which, when an event including an incoming call is detected, outputs control terminal information indicating a physical accommodation position of a connection terminal position of the line and line state information indicating a state change of the line; A time switch having a data bus, allocating and connecting the line in which the event is detected to each time slot on the data bus; a storage device having a logical terminal table for managing a call state; and the control terminal The information, the number information of the assigned one time slot, and the line state information are paired to each logical terminal indicating a logical accommodation position. And a connection control device that controls the time switch by allocating and storing in the logical terminal table of the storage device and reading the physical accommodation position into the logical accommodation position based on the logical terminal table. An exchange control method comprising: