JPH03151752A - Private branch of exchange system - Google Patents

Abstract

PURPOSE:To allow the system to cope with the case of revision of a job location or leaving its seat by using a pager receiver having an identification code relevant to a specific telephone number so as to reply a call thereby dialing its own telephone number from a nearby telephone set. CONSTITUTION:A specific identification code is assigned to each of pager receivers 111, 112,..., 11M, and each identification code corresponds one to one to each telephone number whose total number is also M. Then the relation of corresponding is stored in a memory 9. When a pager receiver 111 is called, a possessor of the pager receiver 111 dials its own telephone number from a nearby telephone set. A control circuit 8 receives the dial information gives a command of connecting a called trunk line and an extension connecting to a telephone set 101 to a channel circuit 6.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a private telephone system used in government offices, companies, etc. that allows calls to be made between a central office line and an extension line or between extension lines. .

(Prior Art) Conventionally, regarding this type of private telephone system, the electronic information communication Hyde Book, Ohmsha, March 30, 1988,
It is described on pages 2647-2657.

FIG. 2 is a diagram showing an example of the configuration of a conventional private telephone system. In FIG. 2, 2 is a central office line group, 3 is an extension group, 5 is a central office line circuit, 6 is a telephone line circuit, 7 is an extension circuit, 12 is a private branch exchange, 13 is a control circuit, 14 is a memory, 151, 15
2. ..., 15N is a telephone.

In FIG. 2, each telephone 151, 152 . ...15
A unique telephone number is assigned to each telephone 151, 152 . ..., 15N phone number and extension group 3
The correspondence relationship with each extension within is stored in the memory 14. When a call is input to the central office line circuit 5 from any central office line in the central office line group 2, this call information is sent to the central office line circuit 5 via the communication path circuit 6.
The signal is sent to circuit 13. Here, as an example, it is assumed that the telephone 151 is called by this call. Control circuit 1
3, based on the information stored in the memory 14 previously,
Select the extension corresponding to the telephone number of telephone 151, that is, the extension to which telephone 151 is connected. Based on this extension selection information, the telephone line circuit 6 connects the extension to which the telephone 151 is connected to the called central office line. As a result, the office line into which the call has been input is connected to the desired telephone set 151 via the extension circuit 7, and a telephone call is started.

The above is a case where a call is made from a central office line, but when a call is made from any extension, call information is sent to the control circuit 13 via the extension circuit 7 and the communication path circuit 6. Connections between extension lines are made in the same manner as in the above case. In addition, in the case of a call to a central office line, the control circuit 13 selects any open central office line, thereby connecting the extension to which the call was made and the central office line.

Note that the office line circuit 5 is a circuit for connection with the public network, and although it is shown as one large block in Fig. 2, it is basically a circuit for each office line, and is used for exchange between office lines. It has no function. Further, the extension circuit 7 is a circuit for connection with a telephone set, and in FIG.
Although shown as two blocks, it is basically a circuit for each extension and does not have a switching function between extensions.

(Problem to be Solved by the Invention) However, in the conventional private telephone system shown in FIG. 2, each telephone 151, 152 . ...Since a telephone number is assigned to 15N, if the place where the person normally works changes due to a change in affiliation, etc.,
There was a problem in that it was necessary to change the nearest telephone number or, conversely, to change the nearest telephone number, making it time-consuming to change the workplace. Further, when leaving the seat, it is necessary to display the destination on a display board or the like and transfer the telephone call, which is a time-consuming process.

Therefore, the purpose of the present invention is to
The purpose is to provide a private telephone system that can be used when changing the place of work or leaving the desk.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a private branch exchange having a function of connecting a central office line and an extension line or between extension lines, and a private branch exchange having a function of connecting a central office line and an extension line or between extension lines, and a A plurality of telephones connected in a one-to-one manner, a plurality of pager receivers that respond when receiving a unique identification code, and one that transmits a desired identification code.
In a private branch telephone system having one or more pager transmitters, the private branch exchange has a function of storing each telephone number in a one-to-one correspondence with each of the above identification codes, and a telephone number from a central office line or extension. a function of transmitting an identification code corresponding to said telephone number to said one or more pager transmitters in response to a call from said telephone number, and when said telephone number is dialed from any one of said plurality of telephones; The private telephone system is configured to have a function of connecting the extension line to which the telephone is connected to the central office line or extension line from which the above-mentioned call was made.

(Function) According to the present invention, since the local telephone system is configured as described above, each telephone that is fixed at a location does not have a telephone number, and all telephones receive and make calls in exactly the same way. Calls can be made.

Therefore, the above-mentioned problems can be solved.

(Example) FIG. 1 is a diagram showing a first example of the present invention. 1st
In the figure, 1 is a private branch exchange, 4 is a pager transmitter, and 8 is a private branch exchange.
is a control circuit, 9 is a memory, 101°102,..., 1
ON is a telephone, 111, 112°, . . . , 11M is a pager receiver. Identical elements in FIG. 2 are labeled with the same reference numerals.

In FIG. 1, each pager receiver 111, 112, .
..., 11M are assigned unique identification codes, and each identification code corresponds one-to-one with each telephone number having the same total number M. This correspondence relationship is stored in the memory 9. Each person working on the premises has a pager receiver 111, 112 . ..., 11
Assume that each user has one M. When a call is input to the office line circuit 5 from any office line in the office line group 2, this call information is sent to the control circuit 8 via the communication path circuit 6. - As an example, this call causes pager receiver 1 to
11 is called. The control circuit 8 selects the pager receiver 1 from the telephone number corresponding to the pager receiver 111 of the calling information based on the previously stored information in the memory 9.
11 is selected and given to the pager transmitter 4. The pager transmitter 4 modulates the identification code unique to the pager receiver 111 and then transmits it. Each pager receiver 111, 112. ...11M receives this transmitted radio wave, but only the pager receiver 111 that has determined that it is an identification code unique to itself responds. Upon receiving this response, the owner of the pager receiver 111 dials his or her telephone number from the nearest telephone. Here, it is assumed that dialing is performed from telephone 101. The dial information is sent to the control circuit 8 via the extension circuit 7 and the telephone call circuit 6. Upon receiving this dial information, the control circuit 8 instructs the call path circuit 6 to connect the office line from which the call was made and the extension line to which the telephone set 101 is connected.

When the call path circuit 6 executes this, the office line to which the call is input is connected via the extension circuit 7 to the telephone set 101 dialed by the owner of the desired telephone number, and a telephone call is started.

The above is a case where a call is made from a central office line, but when a call is made from any extension, call information is sent to the control circuit 8 via the extension circuit 7 and the communication path circuit 6. Connections between extension lines are made in the same manner as in the above case. Furthermore, in the case of a call to a central office line, the control circuit 8 selects any open central office line, thereby connecting the extension to which the call was made and the central office line.

Note that the office line circuit 5 is a circuit for connection to the public network, and although it is shown as one large block in Fig. 1, it is basically a circuit for each office line, and is used for exchange between office lines. It has no function. Further, the extension circuit 7 is a circuit for connection with a telephone set, and in FIG.
Although shown as two blocks, it is basically a circuit for each extension and does not have a switching function between extensions.

FIG. 3 is a diagram showing a second embodiment of the present invention. Third
In the figure, 41, 42. ..., 4L is a pager transmitter. Elements that are the same as in FIGS. 1 and 2 are given the same reference numerals.

The difference between FIG. 3 and FIG. 1 is that not only one pager transmitter but a plurality of pager transmitters are connected. Due to the nature of radio waves in buildings, it is difficult to provide radio waves with sufficient electric field strength to all floors from one transmitter. FIG. 3 is used in such a case. Each pager transmitter 4
1,42. ...4L is installed on each floor and transmits the same information. Other operations are the same as in the case of FIG.

(Effects of the Invention) As described in detail above, according to the present invention, each telephone that is fixed in location does not have a unique telephone number. Instead, a pager receiver with an identification code corresponding to a unique telephone number is used to answer the call. Then, by dialing your own phone number from the nearest phone, you can receive a call using that phone. Therefore, it is possible to realize a private telephone system that can accommodate changes in work location or absence from work without any effort.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a first configuration example of a private telephone system according to the present invention, FIG. 2 is a diagram showing a configuration example of a conventional private telephone system, and FIG. 3 is a diagram showing a second configuration example of a private telephone system according to the present invention. It is a figure showing an example of composition. 1... Private branch exchange, 2... Office line group, 3... Extension line group, 4°41.42. ..., 4L... Pager transmitter, 5... Office line circuit, 6... Call path circuit, 7... Extension circuit, 8... Control circuit, 9... Memory, 101,
102. ...ION...Telephone, 111,112.
...IIM...pager receiver.

Claims (1)

[Scope of Claims] A private branch exchange having a function of connecting a central office line and an extension line or between extension lines, a plurality of telephones connected one-to-one to each extension line of this private branch exchange, and receiving a unique identification code. In a private branch telephone system having a plurality of pager receivers that respond when a call is made, and one or more pager transmitters that transmit a desired identification code, the private branch exchange transmits each telephone number and each of the identification codes. a function of storing a one-to-one correspondence; a function of transmitting an identification code corresponding to a telephone number to the one or more pager transmitters in response to a call to the telephone number from a central office line or an extension; A premises characterized by having a function that, when this telephone number is dialed from any one of a plurality of telephones, connects the extension to which this telephone is connected and the central office line or extension that made the call. telephone system.