JPS62139492A - Dial-in termination connecting system - Google Patents

Abstract

PURPOSE:To execute efficient service by dialing the 2nd called extension number continuously without recalling when an objective extension is not connected because an idle line number is received or the objective extension is busy. CONSTITUTION:When a dial-in local line is terminated, a called dial number is received by a pushbutton signal receiving device 5. If a idle line number is detected, a guide device 7 is connected to an upward path and a command for redialing a caller is guided. When a callee is busy, by caller is connected to a guide device 8 and a message indicating 'Dial another extension number of a guide board '9' if necessary because of busy' is guided. The caller can connect to the 2nd required extension or section by redialing by oneself on the basis of the guide information.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a dial-in incoming call connection method in an additional number system, and particularly relates to a dial-in incoming call connection method suitable for reducing the burden of telephone transfer on a private branch exchange. 0 [Background of the Invention] In the conventional dial-in incoming call connection method, which allows direct calling from a central office line to an extension of a private branch exchange, once a call is received at the private branch exchange and dial reception is performed, the call is not received or received. If the extension is busy and the target extension cannot be connected, the caller is forcibly connected to a third party other than the target extension, and from the point of view of the caller, the caller is forced to make a useless call. However, from the perspective of the third party on the called side, the result is that the caller is forced to carry out unnecessary telephone calls. Incidentally, as related to this kind of conventional products, for example, Japanese Patent Application Laid-open No. 5
9-140762 is mentioned.

[Purpose of the invention]

The purpose of the present invention is to respond to incoming dial-in calls from central office lines.
To provide a dial-in incoming call connection system that reduces the burden of telephone transfer when an air extension number is received or connection cannot be made because the intended called extension is busy.

[Summary of the invention]

In order to achieve the above object, the present invention provides a system in which, when a connection cannot be made to the target called extension, the caller is informed of the called status and can be connected to the second or fifth extension without having to make the call again. ζ Rub.

Therefore, the PB receiver for receiving dialed numeric information, which is once captured and connected to an incoming dial-in call from a central office line, is not released unless the target called extension is idle, and the called extension status is not communicated to the telephone. This allows the caller to connect to the desired second or third extension by making additional dials to other extension numbers accommodated by the private branch exchange without requiring the caller to call again.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a connection diagram of a private branch exchange. In Figure 1,
A network (NW) 1 constituting a private branch exchange includes a central processing unit (CC) 3 having a main memory (MM) 2, and is connected to a central office line trunk (coT) 4 for dial-in termination. This network 1 includes a button/signal receiving device (PBREC) 5 and a tone generator f.
Agency (TG) 6 and guidance device (ANMO, ANML) 7
．． 8 and a number of called common-line subscribers (only one is shown) 9 are housed.

Next, the procedure for connecting the dial-in M communication will be explained without referring to the flowchart shown in FIG.

When an incoming call is received on the dial-in office line, the PBREC 5 for the office line is captured and connected, as shown in connection a in FIG. This content is stored in the main storage device 2 via the central processing unit 5 as a dial-in incoming call connection. ,PBR
When gC5 is captured, b is formed as the called extension is ready to receive and a dial tone is sent from the tone generator 6 to the calling party. When the calling party dials the number of the called extension subscriber 9 of the private branch exchange, the tone generator 6 is released and the called dialed number is received at the PBREC 5;
It is stored in the main storage device 3 via the central processing unit 6.

Here, when the air extension number is detected, conventionally a third party connection is made as shown by the dotted line in diagram W12, but in this embodiment, the central processing unit d5 At the same time as connection a is made to the direction path, the guide device 7 is connected to the upper nine direction path (c). The guidance device 7 includes, for example, information such as "Dial again to receive an air extension number," and guides the caller to this.

From the guidance, the caller dials the extension number of the 35-station machine again without hanging up the handset and calling again.
The called information can be received directly at PBREC5.

On the other hand, when the central processing unit ts detects normal called extension information, the PBREC 5 is not released yet and verifies the jammed state of the called extension. Then, if the called party is empty, the PBREC 5 is opened for the first time and the called party is called. At this time, if the called party is busy, conventionally a 6th party connection is made as shown by the dotted line in FIG. 2, but in this embodiment, the PBREC5
is connected as is (a), and in the same way as described above, connection d is made to the guide device 8 this time. For example, the guide device λ8 includes [
When the corresponding extension is busy, a message to the effect that if necessary, dial the number of another extension or an information desk such as 19 is recorded and the caller is informed of this. Based on this guide information, the caller can connect to the second extension or department desired by the caller by dialing again while the corresponding called extension is busy.

〔Effect of the invention〕

According to the present invention, when an internal telephone number is received or the corresponding called extension is busy, and the target internal dispute cannot be connected, the system connects once to the guidance device and guides the called state, and then the second called extension is connected. Ba,! 3- Even if you do not make a call, the system continues to dial the called extension information and connects you to the desired called extension, allowing you to provide better service to the caller on the station side, as well as providing better service to the caller on the called side's premises. In addition, when the switching machine cannot connect to the first intended called extension, the need for a third party to take over the call is reduced, and efficient service can be provided.

[Brief explanation of drawings]

FIG. 1 is a connection diagram of a private branch exchange to which an embodiment of the present invention is applied, and FIG. 2 is a flow chart. 1... Private branch exchange network 2... Main storage device t 6... Central processing unit 4.
...Dial receiving station line trunk 5...Push button signal receiving device 6...Tone generator 7, 8...Guidance device 9...
・Called extension subscriber), 1, , 5.゛

Claims (1)

[Claims] In a storage program control type private branch exchange, a PB receiver that receives a push button (PB) signal for an incoming call from a central office line is connected in the memory area of the main memory of the exchange after receiving dialed information. When the called extension line is busy or an empty number is detected, the guidance device is connected to the upstream path at the same time as the PB receiver is connected to the downstream path of the terminating office line trunk, and the call is made. A dial-in incoming connection method characterized by receiving additional dials from the subscriber.