JPS63180253A - Private electronic branch exchange - Google Patents

Abstract

PURPOSE:To reduce the load on a central control unit, to smoothen a connection processing even if telephone terminals increase in number, and to improve the operability by providing a peripheral controller and exclusively execute the dial analysis processing. CONSTITUTION:Extension circuits 4-1-4-n detect a dial from a telephone termi nal by their loop monitoring circuit 4, generate dial pulses 100, and output them to the peripheral control circuit 10. The circuit 10 analyzes the read dial pulses in accordance with a dial pulse analyzing program stored in a memory circuit 11, and thus convert the inputted dial pulses into a numerical data, then transmit it to the central control unit 6. The unit 6, based on the inputted numerical data, controls an exchange circuit 1 in order to executes the processing of such as channel formation, etc. Therefore, since the central control unit does not executes the dial pulse analysis, it can smoothly execute a connec tion processing even if terminals increase in number, also, the dial analysis for initializing a function can be executed even without a hooking operation at a terminal during a speech. And thus the operability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to electronic private branch exchanges, and more particularly to analysis of dial pulses generated from a plurality of telephone terminals.

(Prior Art) FIG. 3 is a block diagram showing an example of a conventional electronic private branch exchange. Extension circuits 4-1 to 4-n are connected to exchange circuit 1. Outside lines 3-1 to 3-1 are each central office line circuit 2.
-1 to 2-n, and is connected to the office line circuits 2-1 to 2-n.
n is connected to the switching circuit 1.

The exchange circuit 1 connects the telephone terminals 5-1 to 5-n via extension circuits 4-1 to 4-n, and also connects the telephone terminals 5-1 to 5-n via extension circuits 4-1 to 4-n.
The outside lines 3-1 to 3-n are connected via -n. Further, the switching circuit 1 is connected to a central control unit 6 via a data highway 8, and this central control unit 6 is connected to the office line circuits 2-1 to 2-n and the extension line circuit 4-1 via the data highway 8.
~4-n are connected.

Dial pulses generated by the telephone terminals 5-1 to 5-n are detected by loop monitoring circuits built into each extension circuit 4-1 to 4-n, and are passed to the central controller 6 via the data highway 8. It will be done. The central controller 6 analyzes the input dial pulses according to the program stored in the memory circuit 7, converts them into numbers, controls the exchange circuit 1 according to this number information, and connects the outside lines 3-1 to 3- Forming a communication path between n and the telephone terminals 5-1 to 5-n, or forming a communication path between the telephone terminal 5 and the telephone terminal 5-n.
-1 to 5-n communication paths are formed.

FIG. 4 is a block diagram showing a detailed example of the extension circuit shown in FIG. 3. Each extension circuit includes a calling signal sending circuit 41 that sends a calling signal to the connected telephone terminal, a loop monitoring circuit 42 that detects dial pulses from the connected telephone terminal and sends them to the buffer circuit 9, and a connection circuit. A talking current supply circuit 43 that supplies talking current to the telephone terminal that is connected to the telephone terminal, a hybrid circuit 44 that separates a sending signal and a receiving signal, and a codec circuit that converts the signal from the hybrid circuit 44 into exchange circuit data and encodes it. It consists of 45. The dial pulses detected by the loop monitoring circuit 42 are sent via the buffer circuit 9 to the central control unit 6 of FIG.

By the way, as mentioned above, in the conventional electronic private branch exchange, all dial pulses from each telephone terminal 5-1 to 5-n are analyzed by the central controller 6, so as the number of telephone terminals increases, the dial pulse There is a possibility that analysis processing cannot be performed, and other processing in the central control device 6 is overwhelmed, resulting in inconveniences such as difficulty in getting through on the phone. In addition, the telephone terminals 5-1 to 5-5 dial to activate functions such as hold and transfer during a call to a central office line or extension.
In order to perform the analysis, it is necessary to follow the procedure of starting dial analysis processing by a hooking operation from the telephone terminal, which has the disadvantage of poor operability.

(Problems to be Solved by the Invention) In the above-mentioned conventional electronic private branch exchange, since the central control unit analyzes dial pulses from multiple telephone terminals,
When the number of telephone terminals increases, the processing is taken up by the dial pulse analysis and other processing cannot be performed, making it difficult to make calls to both internal and external lines, and in some cases, the dial pulse analysis cannot be performed at all. Further, when the telephone terminal performs dialing to activate a function during a call to an extension or outside line, dial analysis processing of the central control device 6 must be activated by a hooking operation from the telephone terminal, It had the disadvantage of poor operability. Therefore, the present invention eliminates the above-mentioned drawbacks. Even if the number of telephone terminals increases, the telephone exchange process can be carried out smoothly and quickly, and there is no need to perform hooking operations on each telephone terminal during a call. The aim is also to provide an electronic private branch exchange that can analyze dials for functional activation.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a switching circuit that connects a plurality of terminals to each other via an extension circuit and also connects a plurality of office lines to each other via an office line circuit. in an electronic private branch exchange which forms a communication path by controlling this exchange circuit with a central control unit, dial signal analysis means for analyzing a dial signal input from the terminal and converting it into numerical data; and side means for causing the central controller to perform various control operations based on the numerical data.

(11FI) In the electronic private branch exchange of the present invention, the dial pulse input analysis means inputs the dial pulse generated from the telephone terminal, analyzes it, converts it into numeric data, and sends this numeric data to the central controller. give. The control means causes the central control unit to perform various controls such as forming a communication path and activating functions based on the given numerical data.

(Example) An example of the present invention will be described below with reference to the drawings, in which the same parts as those of the conventional example are denoted by the same reference numerals. FIG. 1 is a block diagram showing an embodiment of an electronic private branch exchange according to the present invention. 1 is a switching circuit that forms a communication path between extensions or between an extension and an outside line, 2-1 to 2-n are central office line circuits, and 3-1 to 3-n are
is an outside line, 4-1 to 4-n are extension circuits, a calling signal sending circuit 41, a loop monitoring circuit 42, a call current supply circuit 43,
It has a hybrid circuit (2-wire, 4-wire conversion circuit) 44 and a codec circuit 45. Note that the loop monitoring circuit 4
2 is connected to a connection point between the calling signal sending circuit 41 and the talking current supplying circuit 43. Reference numeral 6 denotes a central control unit that performs processes such as forming communication channels, 7 a memory circuit that stores programs running on the central control unit 6, 10 a peripheral control unit that performs dial pulse analysis processing, and 11 a dial pulse analysis program. This is a memory circuit that stores.

In addition, each of the above parts is a data highway (only one part is shown)
are combined at.

Next, the operation of this embodiment will be explained. Extension circuit 4-1
~A-n detect dials from telephone terminals (not shown) connected to each by monitoring the on/off of a loop including the telephone terminals in the loop monitoring circuit 42, and detect the dial pulses. 100 and outputs it to the peripheral control device @10. The peripheral control device 10 scans the outputs of the loop monitoring circuits 42 of each of the extension circuits 4-1 to 4-n at regular intervals and reads dial pulses 100 from the loop monitoring circuits 42. FIG. 2 shows a scanning operation for the loop monitoring circuit 42 of the peripheral control device 10. Note that circuits 1 to n in the figure correspond to loop monitoring circuits 42 of extension circuits 4-1 to 4-n. As shown in the figure, when a dial pulse is generated from the loop monitoring circuits 1 to n, the peripheral control device 10 stores in the memory circuit 11, for example, the number of scans indicated by arrow A for the pulse indicated by A of circuit n. The dial pulses output from each circuit are read by performing the following on each of the circuits according to the dial pulse analysis program that has been prepared. Peripheral control device 1
0 analyzes the read dial pulse according to the dial pulse analysis program, converts the input dial pulse into numerical data, and sends this to the central m device 6. The central control unit 6 controls the exchange circuit 1 based on the input numerical data and performs processes such as forming a communication path.

According to this embodiment, the dial analysis process is performed by the peripheral control device 1.
Since dial pulse analysis is carried out by a specialist, even as the number of telephone terminals increases, dial pulse analysis can be performed quickly and smoothly, and centrally controlled! ! Since the equipment 6 does not perform dial pulse analysis, it can perform processes such as channel selection and the like, and even if the number of telephone terminals increases, telephones etc. can be connected quickly and smoothly. Furthermore, since dial pulse analysis is always performed by the peripheral control device 10, it is possible to have the peripheral control device 10 immediately perform dial analysis processing for activating functions, etc., without having to perform a hooking operation during a call on the telephone terminal. , operability can be improved.

[Effects of the Invention] As described above, according to the electronic private branch exchange of the present invention, even if the number of telephone terminals increases, telephone exchange processing can be carried out smoothly and quickly, and during a call, each telephone terminal can This has the effect of being able to analyze the dial for activating the function without performing a hooking operation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an electronic private branch exchange according to the present invention, FIG. 2 is a diagram explaining the dial pulse monitoring and scanning operation of the peripheral control device 10 shown in FIG. 1, and FIG. 3 is a diagram showing a conventional electronic private branch exchange. FIG. 4 is a block diagram showing a detailed example of the extension circuit shown in FIG. 3. FIG. 1... Exchange circuit 4-1 to 4-n... Extension circuit 6... Central control device 7, 11... Memory circuit 10... Peripheral control device 42... Loop monitoring circuit agent Patent Attorney Nori Ken Yudo Sanno - 4z Figure 1 + tllll 1 Figure 2

Claims (1)

[Claims] It has a switching circuit that connects a plurality of terminals to each other via an extension circuit and a plurality of office lines to each other via an office line circuit, and this switching circuit is controlled by a central control unit to control the communication path. In an electronic private branch exchange forming an electronic private branch exchange, a dial signal analysis means for analyzing a dial signal input from the terminal and converting it into numerical data, and a control means for causing the central control unit to perform various control operations based on the numerical data. An electronic private branch exchange characterized by comprising: