JPH0255459A - Extension telephone set call device - Google Patents

Abstract

PURPOSE:To simply and surely call plural extension telephone sets simultaneously by hooking off any of plural extension telephone sets rung simultaneously so as to form a channel. CONSTITUTION:When a caller uses a caller extension telephone set 1A to dial an extension telephone number (i), a dial count circuit 23A in an extension circuit 3A receives the dial signal and informs it to a common control section 13. When the common control section 13 receives the extension number (i), a table 30 is referenced to call telephone sets 1B to 1D corresponding to the extension number (i) and to confirm the information such as allocated position or idle/busy state. Then the called party hooks off the extension telephone set IC, then a reply detection circuit 25C of the extension telephone set 3C informs the reply to the common control section 13. The common control section 13 receives the reply notice to form a channel 27 with speech circuits 22A, 22C via a channel network 20.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is used in a private telephone exchange system, etc. to locate a person whose destination is unknown within the same premises and to inform them of the business.
This invention relates to a private telephone calling device that simultaneously calls a plurality of telephones and connects the telephone that quickly answers to the caller's telephone.

BACKGROUND OF THE INVENTION Generally, subscriber telephone switching systems are used that utilize subscriber telephones, central office lines, and local exchanges. In contrast to this subscriber system, in recent years, companies, factories, and other business establishments with many employees have been using extension telephones, extension lines, and private telephone exchanges to conduct calls between extension telephones within the business office, as well as between extension telephones and telephone exchanges. Private branch telephone exchange (Private Branch Exc.
hange-PBX-) system is widely used.

In the above-mentioned PBX system, an extension telephone calling device as shown in FIG. 4 has conventionally been used, particularly for calls between extension telephones. FIG. 4 shows an example of a conventional extension telephone calling device applied to, for example, a crossbar one-way switching system.

In the figure, the PBX system includes a plurality of extension telephones 1 as system terminals, a communication path system device 2 equipped with an extension circuit corresponding to each of the extension telephones 1, and a plurality of extension telephones 1 and 2, respectively. It is generally constructed of a common control system device 10- which stores and converts selected numbers and controls the connection of incoming and outgoing lines.

The communication path system device 2 includes an extension circuit 3 provided corresponding to each of the telephones 1, and various trunks and the extension circuits 3, which will be described later, for monitoring and controlling communication paths. A crossbar switch frame 4 is provided between the crossbar switch frame 4 and the crossbar switch frame 4, which switches vertical and horizontal intersections according to selected numbers, and a subscriber station line (
A plurality of central office line trunks 5 are provided to supply and control communication current from external lines) to extension telephones 1.
, a plurality of mutual extension trunks 6 for controlling extension calls between the extension telephones 1, and various trunks 7 for performing various other functions such as signal transmission and billing.
. . . and a transmission register 8 for transmitting a dial tone from the calling telephone to the called telephone.

The mutual extension trunks 6 are used for calls between extensions related to the present invention. This extension mutual trunk 6 includes a ringing tone sending circuit 6a and a ringing signal sending circuit 6.
b, and a response monitoring circuit 6c.

The common control circuit 10 includes a connection circuit 11 that connects the crossbar switch frame 4 and a common control circuit (hereinafter referred to as a marker) 13 which is the main circuit of the common control system device 10, and the communication path system The device 20 is composed of a connection circuit 12 that connects the various trunks 5 to 8 and the marker 13, and the marker 13. This marker 13
a crossbar switch control unit 5 to 7 14 for controlling the switching operation of the crossbar switch frame in order to connect a call from the outside line or from the calling extension telephone to the called extension telephone; and the connection circuit 12. a called party route identification circuit 15 that receives an extension calling signal supplied from the extension mutual trunk 6 via the telephone line 6 and identifies and selects the route of the extension line to any of the extension telephones 1 as the called party; The called party location identification circuit 16 identifies and selects the accommodation location of the called party number, and the called party route identification circuit 15 selects an empty trunk between extensions to select the calling party and the called party. It is constituted by an extension mutual selection circuit 17 that connects two extension telephones l.

Problems to be Solved by the Invention However, according to the conventional extension telephone calling device having the above configuration, when it is definitely known that the person to be called (specific called party) is near one of the extension telephones, There is no problem with this, but if the caller does not know the location of the specific called party, restore the telephone extension number of the department where the specific called party is likely to be located. Extension calls must be made by sequentially connecting the extension circuit of the calling telephone and the extension circuits of multiple called telephones until the person answers.6
``-'' First, there was a problem in that the calling operation of an extension telephone was complicated.

This invention makes a call by simultaneously ringing a plurality of extension telephones to the extension circuits of the plurality of extension telephones using a specific extension number dialed by the caller, and picking up any one of the plurality of extension telephones ringing at the same time. It is an object of the present invention to provide an extension telephone calling device that can easily and reliably perform a simultaneous ringing operation on a plurality of extension telephones by forming a telephone line.

Means for Solving the Problem In order to achieve the above object, a table is stored in advance in which an extension number and a plurality of extension telephones to be called by the extension number are stored in correspondence with each other, and a table in which the extension number is dialed by the extension telephone and the corresponding When the dial counting circuit of the extension circuit counts the extension number, it controls the extension telephones corresponding to the extension numbers to be called by referring to this table, and when the called extension telephone detects a response. Then, a communication path is formed between the extension telephone that answered and the calling party's extension 7/telephone, and the response of the extension telephone that did not respond is stopped.

Effect: With the above configuration, the present invention allows a caller to call multiple extension telephones with one dial operation.
The calling party can make a conversation with the extension telephone that answers.

Embodiment FIG. 1 is a functional block diagram showing a schematic configuration of the present invention, and the same reference numerals as in FIG. 4, which shows a conventional extension telephone calling device, indicate the same or corresponding parts. ing.

In the figure, the PB where this extension telephone calling device is installed
The extension circuits 3 of the multiple extension telephones 1 provided in the X system are connected to a common control device 13 and a telephone network 20.
, and a calling signal generating means 21 such as a calling signal trunk.

The extension circuit 3 includes a call control means 22 that connects the corresponding extension telephone 1 to the telephone network 20 to control extension and outside calls of the extension telephone 1, and the corresponding extension telephone 1 serves as a calling telephone. Sometimes another extension phone 1.
.
, a ring control means 24 that controls the ringing operation of the extension telephone when the corresponding extension telephone 1 becomes the extension telephone of the called party, and a plurality of extension telephones 1 of the called party simultaneously ring. When the called party picks up the handset of one of the extension telephones 1 while the callee is calling, the response detection means 25 detects that the telephone has responded to the extension call.

The common control device 13 includes a plurality of extension telephones 1...
・When a caller dials a specific extension number from the calling extension when using one of the extensions to call a called party who is in the vicinity of one of the other extensions. A plurality of telephone simultaneous ring processing means 26 is provided for ringing a plurality of extension telephones at the same time.

The simultaneous call processing means 26 is equipped with a processing operation table 30 as shown in FIG. That is, specific 9'・-
Extension number conversion table 31 for simultaneously ringing a plurality of other extension telephones such as telephones IB, IC, and ID via dial counting means 23 when extension number i of 7 is dialed from extension telephone IA on the caller's side. and a telephone status table 32 for managing the status of each extension telephone in order to perform call control and response detection for telephones IB, IC, and ID on the called party side. This status table 32
stores various types of information 33 such as accommodation location information, service class, blockage information, and status number for each telephone.

Next, one embodiment of the present invention will be described using FIG. 3. In the figure, IA is the caller's extension telephone, IB
3B to 3D are the extensions of the called party that are simultaneously ringing multiple telephones, 3A is the extension circuit corresponding to the calling telephone IA, and 3B to 3D are the individual extensions of the called party corresponding to the called telephones IB to ID, respectively. An extension circuit, 13 is a common control unit as a common control device, 20 is a call network, 21 is a calling signal trunk as a calling signal generating means, and 22A to 22D are provided in each of the extension circuits 3A to 3D. 23A is a dial counting circuit as a dial counting means; 24B to 24D are call control circuits as call control means provided in extension circuits 3B to 3D on the called party side; 25D is the extension circuit 3B on the called party side.
3D is a response detection circuit as a response detection means provided in 3D, and 30 is a table provided in the common control unit 13.

The internal line circuits 3A to 3D are controlled by the common control section 13, and the telephone network 20 forms communication paths between the individual extension telephones under the control of the common control section 13. For example, a communication path 27 is formed between the calling party's extension telephone IA and the called party's extension telephone IC.

Next, the operation of the embodiment having the above configuration will be explained using FIG. 2 again. The caller uses the calling extension telephone IA
When the extension number i is dialed using , the dial counting circuit 23A in the extension circuit 3A receives this and notifies the common control unit 13. When the common control unit 13 receives the extension number i, it refers to the table 30 and first confirms that the extension telephone corresponding to the extension number 1 is the one that calls the three called telephones IB to ID. At the same time, the common control unit 13 checks the information such as the accommodation position and idle status of the called telephones IB to ID from the telephone status table 32, and determines whether the called telephone is currently talking to another extension line or external line. In this case, it is determined that the telephone is not suitable for simultaneous ringing, so that the telephone is not called, and other called telephones are simultaneously called.

For example, if all three called telephones IB to ID are idle and can be called, the respective extension circuits 3B to 3D
By outputting a command signal to the calling control circuits 24B to 24D, a calling signal is sent from the calling signal trunk 21, and the three called telephones IB to ID are simultaneously ringed.

In response to this call, when the called party, for example, takes off-hook the extension telephone IC, the response detection circuit 25C of the corresponding extension circuit 3C detects this response and notifies the common control unit 13 of the response. The common control unit 13 receives this response notification and instructs to form a communication path 27 between the communication circuits 22A and 22C via the communication network 2o. This communication path 27, the calling telephone IA, and the called telephone 1
The calling party and the called party can communicate via the telephone number c.

Further, the common control unit 13 forms the communication path 27, and at the same time controls the respective call control circuits 24A and 24C of the extension circuits 3A and 3C where the call has been started, to stop the ringing of all extension telephones. .

As described above, according to the above embodiment, by dialing one extension number i, the caller can control the ringing of three extension telephones at the same time, and can make a call to the extension telephone that answers first. It has the advantage of being able to perform

In the above-described embodiment, for convenience, the calling party's extension circuit 3A includes a telephone call circuit 22A that controls the telephone call function;
Only the dial counting circuit 23A that controls the calling function is provided, and the extension circuits 3B to 3D on the called party's side are provided with communication circuits 22B to 22D and call control circuits 24B to 24 that control the called function.
D and response detection circuits 25B to 25D have been described, but the present invention is not limited to this, and as shown in the basic configuration block diagram of FIG. It may be configured to have both a calling function and a called function.

Furthermore, the number of telephone extensions that should be called at the same time is not limited to three, and may be two or four or more. Furthermore, by providing various extension number settings, it is possible to It may also be configured to perform arbitrary call control such as m units.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, the present invention includes a table in which an extension number and a plurality of inner line filling machines called by the extension number are stored in correspondence with each other, and a table in which the extension number is dialed by an extension telephone. When the dial counting circuit of the extension circuit counts the extension number, it controls the extension telephones corresponding to the extension numbers to be called by referring to this table, and the called extension telephone detects a response. In this case, a communication path is formed between the extension telephone that answered and the calling party 14, and the answering of the extension telephone that did not answer is stopped. Since a plurality of extension telephones can be called by the caller, the caller can make a telephone conversation with the extension telephone that answers.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram showing the basic concept of an extension telephone calling device according to the present invention, FIG. 2 is a schematic configuration diagram showing a table of a common control device for the extension telephone calling device according to the present invention, and FIG. FIG. 4 is a block diagram showing an extension telephone calling device according to an embodiment of the invention. FIG. 4 is a block diagram showing a conventional extension telephone calling device. DESCRIPTION OF SYMBOLS 1... Extension telephone, 3... Extension circuit, 13... Common control device, 20... Call network, 21...
Calling signal generating means, 22... Call control means, 23...
- Dial counting means, 24... Calling control means, 25.
. . . Response detection means, 26 . . . Multiple telephone simultaneous call processing means, 3o . . . Call processing table, 31 .

Claims (1)

[Claims] A plurality of dial counting circuits that count the extension numbers dialed by the extension telephone, a call control circuit that calls the extension telephone, and a response detection circuit that detects a response of the extension telephone to the call by the call control circuit. An extension circuit, an extension number, and a table in which a plurality of extension telephones called by the extension number are stored in correspondence with each other, and the extension number is dialed by the extension telephone, and the dial counting circuit of the extension circuit calculates the extension number. is counted, each call control circuit is controlled to call the extension telephone corresponding to the extension number by referring to the table, and when the response detection circuit of the called extension telephone detects a response. , form a communication path between the answering extension telephone and the calling extension telephone,
An extension telephone calling device having a common control circuit that controls the calling control circuit so as to stop an extension telephone that has not responded from responding.