JPH0243862A - Incoming call management priority system - Google Patents

Abstract

PURPOSE:To attain talking with a precedence over other subscribers by devising the system such that an incoming call is sent only to a specific number dial subscriber with priority by the dialing of a specific number. CONSTITUTION:An incoming information input means 111 to set incoming priority tentatively is provided to a pushbutton telephone set and also an incoming information management means 410 for the countermeasure with a pushbutton telephone line with incoming priority and a control means 411 to connect the pushbutton telephone set to an extension telephone set of an exchange are provided in the pushbutton telephone set 4. The control means 411 monitors the talking state of the extension telephone sets and detects it that the telephone set is idle from the busy state and sends a call signal only to the pushbutton telephone set having the incoming priority. Thus, the connection with a telephone set registered with an extension callback is ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an incoming call management priority system for a key telephone of a key telephone device connected to an extension of a private branch exchange.

(Prior art) Fig. 4 shows a private branch exchange (PBX) 3 in which a public (NTT) line 1 and a private line 2 are connected, and a group of extension telephones 201 to 201.
203 and the button telephone device 4 are connected via extensions 210 to 214, and the button telephone devices 10 to 203 are connected to the button telephone device 4 through extensions 210 to 214.
19 indicates a connected telephone switching system. Note that the key telephone device 4 also has a public (NTT) line 1' connected thereto, and has extension telephones 201 to 203 and key telephones 10 to 1.
9 to PBX 3 (or key telephone device 4) exchange control allows mutual calls to be made with an outside line through public line 1 (or 1') and private line 2, or between an extension telephone and a button telephone via an extension line. ing.

In this case, when the PBX 3's extension callback (reservation call) function, vacant dedicated line waiting function, etc. were set on the extension telephone or key telephone, the following problems occurred.

(Problem to be Solved by the Invention) In the above telephone exchange system, if Mr. 1 of the button telephone (extension number 10) of the key telephone device 4 dials Mr. A of the extension 201 of the PBX 3 to mutually exchange the extensions, A
Mr. 1 is busy on the phone, so Mr. 1 makes an extension callback to the PBX. When Mr. A ends the call, the PBX 3 calls all of the key telephones 10 to 19 via the key telephone device 4 based on the extension call back. As a result, even though the original purpose of the call was to call Mr. 1, the J.
- Either of Mr.-2 may respond.

At this time, everyone other than Mr. 1 did not wish to exchange extension calls with Mr. A, so they hung up their phones, causing a problem in which they were unable to call back Mr. 1 on their extensions.

The purpose of the system of the present invention is to eliminate such conventional problems and to manage incoming calls so that connection with a telephone set for extension callback can be reliably established.

(Structure and Operation) In order to achieve the above object, the present invention provides a telephone exchange system comprising an extension telephone connected to a private branch exchange and a button telephone connected via a button telephone device connected to the extension of the private branch exchange. The key telephone set is provided with a call information input means for temporarily setting a call priority, and a call information management means for matching the button telephone line and the key telephone set with the call priority, and both means. The button telephone device is characterized in that the button telephone device is equipped with a control means for controlling and connecting a key telephone that gives priority to incoming calls to an extension telephone of a private branch exchange.

The present invention allows a subscriber of a key telephone to use a private branch exchange (PB).
X) using the extension (external line from the key telephone device),
When a call is made to the extension subscriber to make a call, the subscriber using the button telephone dials a special number for callback, such as re OIJ, because the extension subscriber is busy. As a result, incoming call information for claiming incoming call priority is input to the key telephone device 4.

When the subscriber of the button telephone set returns the handset, the key telephone device 4 manages the incoming call information indicating that the outside line of the key telephone set has claimed incoming call priority (FIG. 2).

Next, the control device of the button telephone device 4 detects that the extension subscriber of the PBX is free, and sends a calling signal to only the button telephone to call. In this case, a calling signal is not sent to other key telephones based on the incoming call information management.

Therefore, the subscriber of the key telephone who receives a priority call (incoming call) due to the ringing signal picks up the handset, dials the extension telephone, and answers, thereby giving priority to the call over other subscribers. be able to.

(Example) The system of the present invention is applied to a private branch exchange (PBX) shown in FIG.
) 3 and extension telephones 201 to 203 housed in
The present invention is implemented in a telephone exchange system of key telephones 10 to 19 of the key telephone device 4 connected to terminals 10 to 214.

FIG. 1 shows a functional block diagram for implementing the system of the present invention. In the figure, reference numeral 111 denotes an incoming call information input means for claiming incoming call priority from the key telephones 10 to 19 to the key telephone device 4. For example, from the dial to the special number R 01
” will be sent out. Reference numeral 410 denotes incoming call information management means provided in the key telephone device 4. For example, as shown in FIG. (corresponds to line 1')
and a correspondence table of incoming call request extension number B. (1) in the figure shows a state in which incoming call information is not input from the input means 111;
Figures (2) and (3) show a state in which incoming call information is input from key telephones 10 and 12 to external line numbers 1 and 2, respectively, and incoming call priority management is performed.

411 is a control means provided in the button telephone device 4, which controls the incoming call information from the incoming call information input means 111 from the key telephone, and the incoming call information management (
It monitors the call status of the extension telephone from FIG. 2), detects when it becomes idle from a busy state, and sends a ringing signal only to the key telephone which has given priority to incoming calls.

The case where the method of the present invention is implemented in the telephone exchange system shown in FIG. 4 will be explained below using the operation flow shown in FIG. 3. Figure (1) shows the PB from key telephone 10 (Mr. 1).
X: When you dial Ml extension telephone 201 (Mr. A), it is busy, so you dial the special number R Umbrella 01j and call the number shown in Figure 2 (
The incoming call information management of 2) is carried out, and at the stage indicated by $a, the extension telephone 201 becomes idle and a priority call is made only to the key telephone 10. Detailed dial operation.

The operations shown in each stage, such as on-hook, are carried out, and when the call ends, the state returns to the original state shown in FIG. 2 (1), and preparations are made for the next incoming call priority.

In addition, Fig. 3 (2) shows that when extension 211 of PBX 3 and its dedicated line 2 are captured from button telephone 12 (Mr. K) in Fig. 4, all the dedicated lines are in use, so there is a waiting list Dial a special number, e.g., r umbrella 02, and then dial a special number for requesting an incoming call, e.g.
).

In the subsequent operation, priority incoming call processing is performed on the key telephone set 12 at stage ml) as shown in the figure.

(Effects of the Invention) As explained above, the system of the present invention allows incoming calls to be made preferentially by special number dialing in a telephone switching system that uses a combination of a PBX and a key telephone device. It is sent only to subscribers who dial the special number. Therefore, it is possible to make a call before other subscribers.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram for implementing the method of the present invention,
FIG. 2 is an example of the incoming call information management means shown in FIG. 1, and FIG. 3 is a flowchart showing an example of the operation of the method of the present invention. FIG. 4 is an example of a telephone exchange system in which the method of the present invention is implemented. 1.1'...Public (NTT) line, 2...
Dedicated line, 3...Private branch exchange (PBX). 4...Button telephone device, 201-203...PB
X extension telephone, 10-19... button telephone, 111
... Incoming call information input means, 41o... Incoming call information management means, 411... Control means 6 Fig. 1 Fig. 2

Claims (1)

[Claims] In a telephone exchange system consisting of an extension telephone connected to a private branch exchange and a button telephone connected via a button telephone device connected to the extension of the private branch exchange,
Incoming call information input means for temporarily setting incoming call priority on the key telephone set, and control means for controlling incoming call information management means for correspondence between the key telephone line and the key telephone set having incoming call priority, and both means. An incoming call management priority system, characterized in that the button telephone device is equipped with a control means for connecting the incoming call priority key telephone to an extension telephone of a private branch exchange.