JPS60200667A - Call control method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (al) Technical Field of the Invention The present invention relates to an automatic private branch exchange, and more particularly to an improvement in a new call control method for calling any two terminals based on instructions from another terminal.

(bl) Prior Art and Problems FIG. 1 is a diagram showing an example of a conventional call control system in an automatic private branch exchange, and FIG. 2 is a diagram illustrating the processing process of the call processing section in FIG. 1. In FIGS. 1 and 2, when extension A accommodated in network NW makes a call to call extension B, call processing unit CP■ in central control unit CC detects the call from extension A, and Storage device M
Extension A is set to a blocked state on the blockage management information BIT provided in M, and information regarding extension A is set as caller information in the call management information CDB corresponding to the generated call (step 31). Next, when extension A dials the telephone number Nb of extension B, the call processing unit cpi calls the signal reception distribution device SRD.
In step S2), the telephone number Nb is received via the telephone number Nb, and the blockage status of extension B is identified using the blockage management information BIT in the main memory device MM. information about extension B is set in the call management information CDB as destination information, and the signal reception distribution device S
Control RD to call inner &ilB (step S3
and S4). When the internal wAB responds, the call processing unit CPI
controls the signal reception distribution device SRD and connects the network NW.
Inside inside & 9! A communication path between A and B is set (step S5). Thereafter, extensions A and B make calls via the communication path. After the call ends, when extension A is restored, the call processing unit CPI opens the communication path between extensions A and B using the corresponding call management information CDH, disconnects the call, and transfers the call management information BI.
Set 1 and B free on T.

As is clear from the above explanation, in some conventional call control systems, it is necessary for the calling extension A to dial the telephone number Nb of the called extension B.
It was not possible to call extensions A and B to make a call.

(C1 Purpose of the Invention The purpose of the present invention is to eliminate the drawbacks of the conventional call control system as described above, and to enable two arbitrary terminals housed in an automatic private branch exchange to call and interact with each other based on an instruction from another terminal. The goal is to realize a means to enable connection.

(d) Structure of the Invention The object of this invention is to receive the numbers of two arbitrary terminals housed in an automatic private branch exchange, call the two terminals sequentially, and after the two terminals respond, establish a communication path between the two terminals. This is achieved by setting .

That is, according to the present invention, by inputting the numbers of two terminals from another terminal, the two terminals are called and communication between the two terminals becomes possible.

tel　Embodiments of the invention An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is a diagram showing a call control system according to an embodiment of the present invention, and FIG. 4 is a diagram illustrating the processing process of the two-terminal call processing adding section in FIG. 3.

Note that the same reference numerals indicate the same objects throughout the figures.

In Fig. 3, in addition to extensions A and B, data terminal C
is accommodated in the data communication control device DCC via the modulation/demodulation device MD, and a two-terminal call processing addition section CP2 is provided within the central control device CC.

It is assumed that data terminal C is installed adjacent to extension A. In Figures 3 and 4, in order to set up a call path between extensions A and B, the user of extension A calls the telephone numbers of extensions A and B from data terminal C instead of calling from extension A. Suppose that Na and Nb are input. The data communication controller DCC receives telephone numbers Na and Nb from the data terminal C via the modem MD and transmits them to the central controller CC. In the central controller CC,
The two-terminal call processing addition unit CP2 is the data communication control device DC.
Activated by input notification from C, data communication control device D
Based on the telephone numbers Na and Nb transmitted from the CC, the idle state of extensions A and B is identified by the idle management information BIT (Step Sll and 512), and if the extensions A and B are idle, the idle status of extensions A and B is identified by the idle management information BIT. Extensions A and B are placed in a blocked state on the BIT, and information regarding extensions A and B is set in the call management information CDB corresponding to the generated call (step 513). Subsequently, the two-terminal call processing addition unit CP2 controls the signal reception and distribution device SRD to call extension A (step 514), and when extension A responds, activates the call processing unit CP1 (steps S15 and 516). Thereafter, the call processing unit CPI calls extension B according to the process shown in FIG. 2, and when extension B answers, a communication path is established between extensions A and 8.

As is clear from the above description, according to this embodiment, extensions A and B can be called by inputting telephone numbers Na and Nb from another data terminal C, and can be interconnected.

Note that FIGS. 3 and 4 are only one embodiment of the present invention, and for example, the data terminal C is connected to the data communication control device DC.
The present invention is not limited to being connected to C, and may be accommodated in the network NW, but the effects of the present invention remain the same even in such a case. In such a case, after making a call, data terminal C dials a predetermined special number and telephone numbers Na and Nb of extensions A and B in order to activate the two-terminal call processing addition section CP2. The process described above remains unchanged. Furthermore, extensions A and B are not limited to telephones, and the effects of the present invention remain the same even in the case of non-telephone terminals. Furthermore, it goes without saying that the configuration of the automatic private branch exchange to which the present invention is applied is not limited to that shown in the drawings.

(``) Effects of the Invention According to the present invention, any two terminals housed in an automatic private branch exchange can be called and interconnected by instructions from another terminal, such as dialing from a telephone. This eliminates the need for awareness and is effective in expanding services to complex systems that accommodate data terminals and telephone terminals.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of a conventional call control method in an automatic private branch exchange, FIG. 2 is a diagram illustrating the processing process of the call processing section in FIG. 1, and FIG. 3 is a diagram according to an embodiment of the present invention. FIG. 4', which is a diagram showing the call control system, is a diagram illustrating the processing process of the two-terminal call processing adding section in FIG. 3. In the figure, A and B are extensions, BIT is block management information, C is a data terminal, CC is a central control unit, CDB is call management information, CPI is a call processing unit, CF2 is a two-terminal call processing addition unit, and DCC is a Data communication control device, MD is a modem, NW is a network, Sl to S16 are steps, S
RD indicates a signal reception distribution device. Grass 71g #2 Bi

Claims (1)

[Claims] A call control characterized by receiving the numbers of two arbitrary terminals housed in an automatic private branch exchange, calling the two terminals sequentially, and setting up a communication path between the two terminals after the two terminals have responded. method.