JPH04179394A - Incoming system - Google Patents

Abstract

PURPOSE:To designate an incoming side only by dialing a subscriber's number at the incoming side by a caller by comparing the combination of a caller's number and a calling subaddress with that registered in a calling subaddress storing means, and reading an extension number corresponding to the combination of the caller's number and the calling subaddress when they are coincident. CONSTITUTION:The caller's number information and the calling subaddress information is received by a central control unit 6, and the received caller's number information and calling subaddress information one compared with the caller's number and the subaddress preliminarily registered in a memory circuit 5. Then, when the pertinent caller's number and the subaddress are registered, the extension number corresponding to the caller's number and the subaddress is read out, and for example, allowed to be incoming through a digital line circuit 4-1 to a pertinent terminal equipment 7-1. When the terminal equipment 7-1 answers, the central control unit 6 controls a time division switch 3, and sets a speech pulse. Thus, the caller can operate the incoming to the objective terminal equipment 7-1 or the like only by dialing the subscriber's number of the incoming other party.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a private branch exchange having an interface for connecting to an I5DN network, and particularly relates to a call termination method.

[Prior art]

Conventionally, with this type of call termination method, when the called party uses one line on multiple terminals, the caller dials the other party's subscriber number and called subaddress to have the call terminated on one specified terminal. I can do it.

[Problem to be solved by the invention]

In the above-mentioned conventional call termination method, when the called party uses one line with multiple terminals, when the incoming call is to be received on one designated terminal of the line, the subscriber number of the called party is used. The native subaddress had to be dialed, which required the caller to know the called party's subscriber number and the called subaddress.

Also, if you dial only the subscriber number of the called party, since multiple terminals are connected to one line, all of the terminals will be called, and therefore someone other than the intended recipient will answer. This has the disadvantage that the responder has to carry out a tedious process.

SUMMARY OF THE INVENTION An object of the present invention is to provide a call receiving system that allows the caller to specify the called party by simply dialing only the subscriber number of the called party.

[Means to solve the problem]

The incoming call method of the present invention allows a specific combination of a calling number and calling sub-address, and an extension number corresponding to this combination of calling number and calling sub-address, to be transmitted in a private branch exchange having an interface for connecting to an ISDN network. A caller number/caller subaddress storage means to be registered, and the IS
The combination of the calling number and calling sub-address of an incoming call received from the DN network is compared with the combination of the calling number and calling sub-address registered in the calling number/calling sub-address storage means, and if they match, the calling number and the calling sub-address are compared. Incoming call connecting means reads an extension number corresponding to a combination of calling sub-addresses and connects the incoming call to a terminal having the extension number.

〔Example〕 Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

The incoming call method shown in FIG. 1 is l5DNW! 4-connection interface circuit 2, time division switch 3, digital line circuit 4-1.4-2.4-3.4-n, calling number, calling sub-address, and extension number assigned to each terminal. A private branch exchange Ill consisting of a memory circuit 5 for registering, a central control unit 6, and a terminal 7-1.7-2.7-3.7-n
and a digital service unit 8. l5
DN1N4 is connected to the private branch exchange w&l through an ISDN line, digital service unit 8.

A specific caller number and subaddress are sent from the terminal 7-1.7-2.7-3.7-n in advance, and the terminal 7-1.
The extension numbers 7-2.7-3.7-n are registered in the memory circuit 5 using a predetermined method.

When an incoming signal arrives from the ISDN network through the digital service unit 8, line connection processing is performed between the ISDN network connection interface circuit 2 and the ISDN network. At this time, the central control unit W6 inputs the caller number information and Receive calling subaddress information. The central control device 6 compares the received caller number information and caller sub-address information with the caller number and sub-address registered in advance in the memory circuit 5, and if the corresponding caller number and sub-address are registered, Read out the caller number and extension number corresponding to the subaddress, for example, the digital line circuit 4-
1 to the corresponding terminal 7-1. When the terminal 7-1 responds, the central controller 6 controls the time division switch 3 and sets a call path. If the incoming caller number and subaddress are not registered, the terminal connected to that line, for example 7-1.7-2.7-3.7
-N Allow all calls to arrive.

〔Effect of the invention〕

As explained above, the present invention enables a specific caller number single sub-address to be registered in advance in each terminal connected to the same line in correspondence with each extension number in an exchange connected to an ISDN network. , for incoming calls using caller ID information service, incoming calls from pre-registered parties are routed to the specified terminal, so even if multiple terminals are connected to one line, the call can be made. This has the effect that a person can receive a call to the desired terminal by simply dialing the subscriber number of the called party.

In addition, all incoming calls from a specific caller (for example, a customer) can be received on the terminal of the designated person in charge, so there is no need to bother responding or bothering the person handling the other terminal using the same line. It has the effect of making you feel better.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1...Private branch exchange, 2...ISDNm connection interface circuit, 3...Time division switch, 4-1 to 4-n
...Digital line circuit, 5...Memory circuit, 6.
・・Central control unit, 7-1 to 7-n-・・Terminal, 8・
...Digital service unit.

Claims (1)

[Claims] A calling number/calling sub-address that registers a combination of a specific calling number and calling sub-address and an extension number corresponding to this combination of calling number and calling sub-address in a private branch exchange having an interface for connecting to an ISDN network. The storage means compares the combination of the calling number and calling sub-address of an incoming call from the ISDN network with the combination of the calling number and calling sub-address registered in the calling number/calling sub-address storage means, and when they match. A method for receiving a call, comprising: a call connecting means for reading an extension number corresponding to the combination of the caller number and the caller sub-address, and connecting the call to a terminal having the extension number.