JPS63102449A - Automatic transfer system from office-side caller - Google Patents

Abstract

PURPOSE:To connect a call to an optional extension through the operation of the office-side caller without giving any trouble to the caller extension, by keeping the extension indicated by the selecting signal of PB dial signals when a PB signal receiver receives the PB signals. CONSTITUTION:Private automatic exchanges 1 and 2 are connected with each other by means of a private line. When a telephone set EXTA is off-hooked and a telephone number is dialed, an incoming-in trunk ICT1 is connected with the telephone set EXTA by the exchange-connection of the exchange 3 of a central office. On the private exchange 1 side, if an incoming call arrives from the central office, a CPU1 connects the trunk ICT1 and a PB signal receiver PSREC with each other. As a result, a connecting route is formed and, upon receiving a dial tone from the exchange 1, the telephone set EXTA dials an identification number, access code of the exchange 2, and extension number, which are required for determining whether further connection is required or not. When a PB dial from the central office is received by the receiver PBREC, the CPU1 which receives the information makes the telephone section EXTB connectable through the exchange 2 by using the PB dial signal if the identification number coincides with a set number.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic transfer system in a private branch exchange EPABX, and more particularly to a transfer connection system for incoming calls from a central office.

((2! Future technology) When a call is received from a central office in a private branch exchange @EPABX, the conventional transfer method is to connect the caller with the extension subscriber accommodated in the receiving private branch exchange EPABX, that is, the calling party on the 5th office side. The call can only be transferred to another extension subscriber from the called party side of the private branch exchange EPABX.

(The problem to be solved by the invention) Therefore, in the conventional transfer format, there is a drawback that the caller cannot transfer based on his or her intention or operation.

An object of the present invention is to provide an automatic transfer system by which a caller on the central office side can transfer to any extension subscriber accommodated in another private branch exchange connected by a dedicated line by operation of the calling party on the central office side. It is in.

(Means for Solving the Problems) In order to achieve all of the above objects, the automatic transfer method by the caller on the central office side according to the present invention is such that when a call is received from the central office exchange and a special number is sent, The incoming trunk where the call was received is connected to a PB signal receiver, and the PB signal receiver receives the PIN number for determining whether or not to proceed with the connection, the access code of the private automatic branch exchange to be connected, and its extension number. When the PIN number is a preset number or not, and if they match, the route to the private automatic branch exchange to be connected is selected, and the incoming trunk is connected to the route. , followed by sending the extension number to the route and transferring the call of the calling subscriber accommodated in the central office exchange to the extension telephone of the private branch exchange to be connected.

(Embodiment 9 The present invention will be explained in more detail below with reference to the drawings and the like. Fig. 1 shows a private automatic branch exchange to which the automatic transfer method by a caller on the central office side according to the present invention is applied, and a relay system of a central office or switchboard. It is a figure showing an example of.

In the figure, private automatic branch exchanges 1 and 2 are connected by a dedicated line. These private branch exchanges are separated by large distances; for example, Enouchi Automatic Exchange Machine 1 is located in Fukuoka City, Fukuoka Prefecture (hereinafter referred to as “A
It is assumed that the Wt automatic branch exchange is installed at a business office in Abiko City, Chiba Prefecture (hereinafter referred to as rB City).

The central office exchange 3 is an exchange in the city where the private automatic branch exchange 1 is located.

Let's assume a situation where a company employee who has traveled to City A for business makes a phone call to the company's office in City B.

First, the telephone EXTA calls the private automatic branch exchange in City A. In this case, the telephone number is not the usual representative number that is used for all exchanges, but a different number is assigned. However, for ease of use, the area code is the same as the main office number, and the following four digits are the same nationwide so that it is easy to remember.

When the telephone EXTA is off-hook and the above-mentioned telephone number is dialed for a calling connection, the central control unit of the exchange 3 of the central office (not shown) captures the local trunk IOT, controls the network, and connects the telephone EXTA and the local trunk IOT. and connects the incoming incoming trunk ICTl of the private automatic branch exchange 1 and the trunk IOT within its own office.

Incoming incoming trunk 10 due to exchange connection of exchange 3 of the above station
A connection is made between Tl and 'telephone EXTA.

On the private branch exchange 1 side, when there is an incoming call from the office on the incoming trunk l0Tz, the N-biased trunk IOT is sent.

notifies the central control unit 0PU1 of the incoming call display.

The central control unit CPU1 instructs the incoming trunk IOTl to return all response information to the station side, captures the PB signal receiver PBREO2, and controls the network NW1 to transmit the incoming trunk ICTl and the PB signal receiver PB.
Connect between REOO.

As a result, the connection route is: telephone EXTA - network NWs of the office - trunk within the local office l0T - network NWs of the office - incoming trunk of private automatic branch exchange Iso 1 l0Tl -
It is formed by a route from network NW 1 of private automatic branch exchange 1 to PB signal receiver PBREC.

When the central office telephone EXTA receives the dial tone from the private automatic branch exchange 1, it dials the personal identification number, the access code of the private automatic branch exchange 2 in city A, and the extension number to determine whether or not subsequent connection is possible.

PB dial iPB signal receiver FBI-LEC from station
When the dial signal is received, the dial signal is sent to the central control unit CPU1.
Notify.

If the personal identification number matches the preset number, the central control unit 0PUI connects the extension according to the selection signal by the PB dial signal, as will be explained later.

If there is a mismatch, a disconnection signal is sent to the station.

After that, the normal disconnection process will be performed in which a busy tone will be sent to the station's Toguchi Daija.

If they match, the router to the private automatic branch exchange 2 in city B captures the originating office line trunk 0GTi, connects the incoming trunk ICTt and the originating office line trunk OGT'ji to the network N The extension number is sent to the private automatic branch exchange 2 of .

The central control unit 0PU2 of the private automatic branch exchange 2 controls the network NWZ based on the transmitted extension number and monitors the area between the extension telephone EXTB and the incoming trunk 10T2. Then, an instruction is given to the extension telephone EXTB to send out a ringing signal, and to the office subscriber EXTA to send out a ringing tone.

The connection route is subscriber EXT-station network NWs-
Local office trunk l0T - Office network NW 3 - Incoming incoming trunk of private automatic branch exchange 1 l0Tl - Network NWt - Rougoo network NWr - Originating office line trunk (JGT - Dedicated line 4 - Incoming incoming trunk ICTz - Network N W z - The extension line becomes telephone EXTB.

The following is the same as a normal incoming connection.

(Effects of the Invention) As explained above, the present invention allows the caller to transfer to any extension in the private branch exchange by PB dialing by the caller on the central office side, so that the caller does not have to deal with the called extension as in the past. This system has the advantage that it is possible to connect to any extension by the operation of the caller on the central office side without having to use the system.Furthermore, it is possible to connect to any extension without the need for a night exchange operator.

Furthermore, by adding full outgoing call functions to the final receiving station of the private branch exchange, for example, an employee who is on a business trip to a faraway place and his or her family can use all of the exclusive lines of the private branch exchange at night to communicate at low cost. Can the utilization rate of private branch exchanges? It has the effect of increasing

[Brief explanation of the drawing]

FIG. 1 is a relay system diagram showing an embodiment of the automatic transfer system by the station-side caller according to the present invention. NW...Network IOT...Incoming call trunk OGT...Originating station line trunk IOT...Trunk within own office CPU...Central processing unit PBREO...PB signal receiver EXT...Extension telephone patent application Person NEC Co., Ltd. agent Patent attorney Inoro Jusai Figure 1

Claims (1)

[Claims] When an incoming call is received from the central office exchange and a special number is sent, the incoming trunk from which the call was received from the central office exchange is connected to a PB signal receiver, and the PB signal receiver determines whether or not subsequent connection is possible. When you receive the PIN number to connect, the access code of the private branch exchange to be connected, and its extension number,
Determine whether the PIN number is a preset number, and if they match, select a route to the private automatic branch exchange to be connected, connect the incoming trunk to the route, and continue. An automatic transfer system by a caller on the central office side, characterized in that the call of the calling subscriber accommodated in the central office exchange is transferred to the extension telephone of the private automatic branch exchange to be connected by sending the same line number to the route.