JPH11266311A - Simultaneous calling control system for plural telephone sets - Google Patents

Abstract

PROBLEM TO BE SOLVED: To call a telephone set in the vicinity of a person desirably to be called even when plural telephone sets are in existence and it is not known at which telephone set the person to be called is present. SOLUTION: On a request of connection to a specific line circuit 14 by a specific telephone number, connection positions on a time division switch 11 that makes simultaneous calling are extracted based on an extension simultaneous calling management list stored in a storage device 3 and a call signal is sent to all telephone sets 2 of a group connecting to the connection positions under the control of a central processing unit 12. Thus, it is possible to ring a group of the telephone sets simultaneously without installation of special telephone sets such as key telephone sets and a called party can reply to the call by using a nearby telephone set. Since the other telephone sets in the group are used for other calls after the called party replies to the call, this system is very convenient for the users.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for simultaneously calling a plurality of telephones in an automatic exchange.

[0002]

2. Description of the Related Art Conventionally, as a service for calling a plurality of telephones from one telephone, there have been a representative number call and a general command call. The former is a service in which one empty telephone in a group of telephones is selected and called. In the latter case, all the telephones in a group are called, and all the telephones are answered and a simultaneous command is issued.

[0003] A similar effect can be obtained by using a key telephone apparatus, but there is a disadvantage that the apparatus becomes expensive.

[0004]

However, in the above-mentioned conventional system, a plurality of telephones are installed in one limited area such as a hotel room or a conference room, and any telephone can answer a call. In such a case, the caller does not know which phone is near the person, and thus does not know which phone is most convenient to call.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and does not use an expensive device such as a key telephone device. For example, if you decide one telephone number of the conference room and call these numbers, all telephones in the room or conference room will ring, and if you answer with the nearest telephone, you will have a one-to-one call with the caller Is to be able to

[0006]

According to a first aspect of the present invention, there is provided an automatic exchange apparatus comprising: a first memory table for retrieving a connection position on a telephone exchange apparatus from a telephone number; And a second memory table for retrieving a group of a plurality of telephone connection positions to be simultaneously called from the retrieved telephone connection positions, and the central processing unit uses the two memory tables to call the called telephone number. The connection position of a group of a plurality of telephones to be called is searched for, a calling signal is sent to the plurality of telephones at the same time, and a response of one of the plurality of telephones is used to connect a calling telephone or a calling line to a telephone which has responded. In addition, transmission of a call signal to a telephone that does not answer among the group of telephones is stopped.

According to the present invention, dialing one telephone number causes all the telephones in the hotel room or the telephones in the conference room to ring. , And a one-to-one call with the caller becomes possible.

[0008]

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

In the drawing, 1 is an automatic exchange device, 2-1 to 2-1.
2-3 indicates a telephone.

Reference numerals 11 to 17 denote components of the automatic exchange apparatus 1, 11 denotes a time-division switch TSW, 12 denotes a central processing unit CPU for controlling the entire automatic exchange apparatus 1, and 13 denotes a central processing unit 12 which controls the automatic exchange apparatus 1. Storage device ME for storing control programs, control data, and management data for control
M.

14-1 to 14-3 are telephone sets 2-1 to 2-
3 by a time-division switch (TS
W) 11.

Reference numeral 15 denotes a central office trunk (COT), which is connected to the time division switch (TSW) 11, and the other is connected to an office line.

Reference numeral 16 denotes a maintenance terminal device which inputs and outputs station data and the like necessary for the exchange operation.

Reference numeral 17 denotes a bus for exchanging information among the time division switch (TSW) 11, the central processing unit (CPU) 12, and the storage device (MEM) 13.

In the embodiment of the present invention, simultaneous calling of a plurality of telephones means, for example, that telephones 2-2 and 2-3 are installed in a bedroom and a washroom of the same guest room of a hotel, respectively. In the case where the guest room is called from 2-1. In another example, the telephones 2-1 to 2-3 are installed in the same conference room, and the call arriving at the central office trunk (COT) 15 is transmitted to the conference room. This is the case when connecting to the telephone in the room.

FIG. 2 shows an extension information management list stored in the storage device (MEM) 13, and includes telephones 2-1 to 2-3,
That is, for each connection position (NEN-) where the line circuits 14-1 to 14-3 are connected to the time division switch (TSW) 11, the telephone number (DN-) and extension data (EXTDATA-) such as a service class are stored. ing.

FIG. 1 shows an extension simultaneous call management list stored in the storage device (MEM) 13, and shows a connection position (CALLEDN) of a called telephone that simultaneously calls each connection position (NEN-).
EN ~) are listed.

Since the number of simultaneously called telephones differs depending on the number to be called, a stopper (0) is written at the end of the list for each connection position (NEN-).

In the case of a telephone that does not perform simultaneous ringing, the corresponding connection position (NEN-) in the extension simultaneous ringing management list
Nothing is written to.

FIG. 4 is a flowchart of an extension calling operation of the automatic exchange according to the embodiment of the present invention. The outline of the operation will be described below according to this flowchart.

The operation will be described with reference to the example of the above-mentioned hotel.
Dial n (step S1).

The central processing unit (CPU) 12 searches the extension information management list of FIG. 2 according to the control program of the storage device (MEM) 13 (step S2).

It is determined whether or not the extension number DNn exists in the search result list (step S3).

If the number DNn is in the list, the connection position N
ENn, the corresponding extension data (E
XTDATAn).

When the connection position NENn is obtained, the extension simultaneous call management list of FIG. 3 is searched (step S4), and the connection position NEN of the simultaneous call telephone at the connection position NENn is included in the list.
Is registered or not (step S
5).

For the sake of simplicity, the connection position number N
Assuming that EN matches the sign of the line circuit, NENn is 14-2 in the example of the hotel guest room, and CALLEDNENa in FIG. 3 is 14-3. And C
There is no ALLEDNENb to CALLEDNENi, and it immediately becomes the stopper (0).

In this way, the registered called telephone connection position 14
-3 is extracted (step S6).

In the case of this example, the connection position of the registered called telephone is 1
Next, the stopper (0) is extracted, and the process proceeds to the next step (step S7).

If the number of the registered called telephone connection points is two or more, the determination in step S7 becomes NO. Therefore, the next registered called telephone telephone connection position is extracted, and this operation is repeated until the stopper (0) is extracted. . Therefore, there is no theoretical limit on the number of simultaneous calls.

When the stopper (0) is extracted in step S7, the process proceeds to step S8, in which a calling tone is transmitted to the calling telephone 2-1 and a calling signal is transmitted to the called telephones 2-2 and 2-3. Therefore, both the telephones 2-2 and 2-3 ring.

When the called party answers, for example, with telephone 2-3.
(Step S9), the central processing unit (CPU) 12 stops the ringing sound to the calling telephone 2-1 and stops the calling signal to the answering telephone 2-3, and the calling telephone 2-1 and the answering telephone 2 ―
3 is connected via the time-division switch 11, and the call signal to the other telephone set 2-2 not used for answering is stopped (step S10).

As a result, the telephone sets 2-1 and 2-3 are connected, and the telephone set 2-2 is in an idle state, so that it can be used for making and receiving other calls. Thereby, the simultaneous call control operation of the plurality of telephones ends.

If the dialed number is equal to the value of step S in FIG.
If the extension number does not match the extension number in the list in FIG. 2, the busy tone is transmitted to the caller because it is an empty number. If there is a talkie device, it is also possible to notify that it is an empty number by a talkie (step S11).

If the connection position corresponding to the dialed number is not registered in the list of FIG. 3 in the judgment in step S5, the call is made solely, so that the calling telephone is connected to the calling telephone in the same manner as in the normal connection. A ringing tone is transmitted, and a calling signal is transmitted to the called telephone (step S12).

When the called party answers (step S13),
The ringing sound to the calling telephone is stopped, and the calling signal to the called telephone is also stopped, and the calling telephone and the called telephone are connected.

In this way, by registering in the extension simultaneous call management list of FIG. 3, it is possible to control individual calls and simultaneous calls, and also to control the number of simultaneous calls.

In this embodiment, the private branch exchange has been described as an example. However, it is obvious that the present invention can be extended to an automatic exchange. Therefore, although only the central office trunk (COT) 15 is shown in FIG. 1, it goes without saying that the trunk can be extended to general trunks. Although the description has been made with reference to a telephone, the present invention is also applicable to communication terminal devices in general.

[0038]

According to the present invention, it is possible to simultaneously ring a group of telephones without installing a special telephone, such as a key telephone, so that a nearby telephone can answer the call. After that, other telephones in the same group can be used for another call, which is very convenient for the user.

In the above description, a plurality of telephones in a hotel room and a plurality of telephones in a conference room have been described as an example. This is effective.

In addition to the numbers that call a group of telephones simultaneously,
Since numbers can be assigned to individual telephones, simultaneous calling and individual calling can coexist, and the application range of the present invention is further expanded.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram according to an embodiment of the present invention.

FIG. 2 is an extension information management list for extracting a connection position to an automatic exchange from a telephone number.

FIG. 3 is an extension simultaneous call management list for determining a simultaneous call group;

FIG. 4 is a flowchart of a simultaneous call and an individual call of an extension.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic exchange apparatus 11 Time division switch (TSW) 12 Central processing unit (CPU) 13 Storage device (MEM) 14-1 Line circuit (LIN) 1 14-2 Line circuit (LIN) 2 14-3 Line circuit (LIN) 3 15 Office trunk (COT) 16 Maintenance terminal device 17 Bus 2-1 Telephone 1 2-2 Telephone 2 2-3 Telephone 3

Claims (1)

[Claims] A first memory table for retrieving a connection position of a telephone on a telephone exchange from a telephone number, and a group of a plurality of telephone connections to be simultaneously called from the retrieved telephone connection position. A second memory table for retrieving a location, wherein the central processing unit uses the two memory tables to retrieve a connection position of a group of a plurality of telephones to be called by a called telephone number, and to the plurality of telephones; At the same time, a calling signal is transmitted to connect a calling telephone or a calling line to a calling telephone by a response of the plurality of telephones.
A simultaneous call control method for a plurality of telephones, wherein the transmission of a call signal to a telephone which is not responding is stopped.