JPH03106257A - Telephone exchange system - Google Patents

Abstract

PURPOSE:To apply busy display of an extension telephone set of a group without any special operation and to select the display automatically by having only to dial an extension telephone set so as to read the information of busy/idle state of extension telephone sets of the group belonging to the dialed extension telephone set and displaying the information onto a display device of the extension terminal. CONSTITUTION:A storage management means 102 detects whether extension telephone set 2-1 to 2-n are idle or busy via a call processing means 101 and stores the information of busy/idle state of the extension telephone sets 2-1 to 2-n in a storage means 103. A display control means 104 reads the information in the storage means 103 in the unit of groups while the extension telephone sets 2-1 to 2-n are grouped into plural groups. Then an extension telephone set has only to dial an extension telephone set to read the information of the idle/busy state of the group to which the extension telephone set belongs and display controlled on a display device of the extension terminal provided with the display devices displaying the busy/idle state fewer than the number of the entire extension telephone sets. Thus, the display is switched automatically to the busy state display as to the group to which the extension telephone set belongs by having only to dial the extension telephone set and no special operation is required.

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial Application Field) This invention relates to a telephone switching system using a private branch exchange or the like, and in particular to a system for calling each extension telephone to perform line connection operations. At extension terminals such as relay boards,
This invention relates to a telephone exchange system that makes it easy to check whether a necessary extension telephone is busy or not.

(Prior Art) In a relay stand provided in a conventional private branch exchange, the number of LEDs for indicating that extension telephones are busy is provided in a number smaller than the total number of extension telephones. The LEDs on the relay stand displayed a busy message for each group. for example,
If 100 LEDs are installed, extension numbers 100 to 199 are group E, numbers 200 to 299 are group 2, and extensions 300 to 399.
The telephone numbers up to and including the telephone number are classified as the third group, and when the operator at the relay stand performs a special operation such as pressing a predetermined key, the extension telephones of the desired group are displayed as busy.

Therefore, when the operator at the relay stand calls the extension telephone, he or she must perform the above-mentioned special operation to check whether the call is busy or not before dialing, which poses a problem of poor operability.

(Problems to be Solved by the Invention) As described above, in the conventional telephone switching system, in the extension terminal for making a call to each extension telephone and performing a line connection operation, the LED indicates the number of all extension telephones. A smaller number of telephones were installed, and by performing a special operation, a busy display was displayed on the extension telephone for one of the groups, so when making a call, the above special operation was required. Otherwise, it would be impossible to tell whether the target extension telephone was busy or not, resulting in poor operability.

The present invention was made to solve the problems of the conventional telephone exchange system as described above, and its purpose is to display a busy display for the group to which this extension belongs by simply making a call to the target extension. To provide a telephone exchange system that automatically switches to the telephone and does not require any special operation.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes a plurality of extension telephones, an extension terminal equipped with a display device that displays a busy/vacant status in a smaller number than the extension telephones, and this extension terminal. call processing means for processing a call in response to a call from the telephone; storage means for storing information on the busy/empty state of the extension telephone; detecting the busy/empty state of the extension telephone and taking appropriate action. a storage management means for storing information in the storage means; a storage management means for dividing the extension telephones into a plurality of groups and reading out the information in the storage means for each group; and a call originating from the extension terminal to the call processing means to the extension telephone. display control means that reads out busy/empty state information of the group to which the called party's extension belongs from the storage means and causes the display device to display information corresponding to the busy/empty status information of the group to which the extension telephone of the called party belongs; A telephone exchange system was constructed by equipping the

(Function) According to the above structure, simply by making a call from an extension terminal to an extension telephone, the busy/idle status information of the extension telephones in the group to which this extension telephone belongs is read out, and the number of calls is less than that of all extension telephones. Since it is used to control the display on the above-mentioned display of an extension terminal equipped with a display device for displaying the busy/vacant status, the busy/vacant status of the group including the above-mentioned extension telephone can be displayed without requiring any special operation. will be done.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a block diagram of an embodiment of the present invention. In the figure, 2-1 to 2-n are extensions. Showing the telephone, 21-1~
21-m indicates a line such as a central office line. Further, 10 indicates a relay stand which is an extension terminal. The number of extension telephones 2 on the relay console 10 is n.
Fewer LED IIs are provided. In addition, a numeric keypad 12, a call button 13, and a disconnect button 14 are provided,
Other function keys are also provided, but they are omitted here. 15 is a headset. Call processing means 101 accepts calls from relay stand 10 and extension telephones 2-1 to 2-n, processes calls between them or to line 21, and enables communication. The storage management means 102 is the extension telephone 2
-4 to 2-n are busy or idle is detected via the call processing stage 101, and each extension telephone 2-1 to 2-n is stored in the storage means 103.
2-n busy/idle status information is stored. Display control means 104 stores information in storage means 103 on extension telephones 2-1 to 2-2.
-n is divided into multiple groups and read out in groups. That is, the storage area of the storage means 103 is divided, and each area #0
~#K has l groups of extension phones busy/
An empty state is stored, and information is read out for each group. This reading is performed from the relay console 10 to the extension telephones 2-1 to 2-n.
When a call is made to the callee, the display control means 104 displays the callee's extension telephones 2-1 to 2- through the call processing stage 101.
Detects group n and selects extension telephone 2 of this group.
This is done by reading the busy/idle status information for the The display control means 104 provides the busy/vacant status information read above to the relay stand 10 and causes the LED 11 to display the corresponding information.

FIG. 2 shows a system using a private branch exchange to which the present invention is applied. Extension circuits 3-1 to 3-n, office line circuits 5-1 to 5-n, and dedicated line circuits 7-1 to 7-n are connected to the switching circuit 1 in the figure, and a relay board 10 is also connected to the switching circuit 1. It is connected. The switching circuit 1 is switched by the control unit 8 and establishes communication paths between each circuit and with the relay stand 10.

The control section 8 is constituted by a microcomputer, and controls the switching circuit 1 and transmits and receives data to and from each circuit. A storage section 9 is connected to the control section 8 , and the storage section 9 functions as a storage means 103 .

The storage unit 9 has a group "00" as shown in FIG.
A memory table M stores the extension numbers of the extension telephones 2 grouped from 99 to 99, and a memory table (not shown) stores the busy/empty state information of the extension telephones for each extension number. It is provided.

The control unit 8 executes the program shown in the flowchart shown in FIG. 4 in call processing when receiving a call from the relay console 10 to the extension telephone 2.

This program is included in the control section 8.

Below, we will explain based on this flowchart. First,
When a call is made from the relay console 10 to the extension telephone 2, the control unit 8
receives the dial number information sent from the relay stand 10 and detects whether the dial number has reached two digits (401). Here,
The reason for using two digits is that grouping is done by the upper two digits of the extension number; depending on the system, it may be one digit or three or more digits. That is, in this embodiment, the group identification number is part of the group extension number.

In step 401 above, when a two-digit dial number is received, the memory table M shown in FIG. 3 is searched to determine whether an extension number is stored corresponding to the corresponding two-digit group number. If detected (402 is stored, the busy/empty state information of the extension telephone 2 of this extension number is read from a memory table (not shown) and a control command for turning on/off the busy indicator lamp (LED II) is created. admonish (4)
03).

Next, the control unit 8 sends the control command created in step 403 to the relay stand 10 (404). The relay console 10 controls the lighting/extinguishing of the LED II based on this control command to display a busy display.

In this embodiment, in the case of a four-digit extension number, when the upper two digits of the extension number are input from the relay console 10, the extension telephones of the group divided by the upper two digit extension numbers are selected. A busy display will be displayed. Therefore, when an incoming call is received from the central office line and the call is transferred to the extension telephone 2, when the number of the predetermined group is dialed, the extension telephone of the group is displayed as busy.
It becomes possible to select and input the remaining last two digits of the four-digit extension number from an empty extension telephone.

Specifically, for example, if you dial up to "O○",
rooo1, 0002, 0003, 0080,
Extensions 008B and 0099J will be displayed as busy, so if you find one of these extensions and enter the last two digits of this extension number, the call will not be busy and the call will be forwarded quickly. It becomes possible.

Incidentally, the extension telephones of each group are usually installed in the same "department" or "department" so that the purpose can be achieved no matter which extension telephone is used.

In the above, the control unit 8 functions as a memory management means 102 that constantly detects the busy/empty state of the extension telephone 2 and manages information in the memory 103.

Note that the present invention may be used in combination with switching the busy display by a special operation.

[Effects of the Invention] As explained above, according to the present invention, simply by making a call to an extension telephone, the busy/empty state information of the extension telephones in the group to which this extension telephone belongs is read out, and all extension telephones are Since this function is used to control the display of the above-mentioned display of an extension terminal equipped with a smaller number of busy/empty state indicators, the extension telephones of the group, including the above-mentioned extension telephone, can be displayed without any special operation. There is an advantage that the busy display is displayed and the display is automatically switched.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a block diagram of a telephone switching system using a private branch exchange to which the present invention is applied, and FIG. 3 is a diagram showing extension numbers of extension telephones divided into groups. FIG. 4 is a flow chart for explaining the operation of one embodiment of the present invention. 1... Switching circuit 2-1 to 2-n... Extension telephone 3-1 to 3-n... Extension circuit 5-1 to 5-n... Office line circuit

Claims (1)

[Scope of Claims] A plurality of extension telephones, an extension terminal equipped with a display device for displaying a busy/vacant status in a smaller number than the extension telephones, and processing a call upon receiving a call from the extension terminal. call processing means; storage means for storing information on the busy/empty state of the extension telephone; and storage management means for detecting the busy/empty state of the extension telephone and storing corresponding information in the storage means. Then, the information in the storage means is divided into a plurality of groups and read out for each group, and when it is detected that a call has been made from the extension terminal to the extension telephone to the call processing means, the called A telephone exchange system characterized by comprising display control means for reading out busy/empty state information of a group to which a side extension telephone belongs from the storage means and causing the display to display a corresponding display. .