JP2001224054A - Private branch of exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a PHS terminal to be called with one telephone number even when the terminal is in a public mode zone or a private mode zone. SOLUTION: The private branch of exchange 14 houses a telephone line (general line) 2 and a PHS digital line 1 and uses a PHS terminal 13 for an extension slave unit. The private branch of exchange is provided with a position registration database where extension numbers as extension slave units and public telephone numbers of PHS terminals are made to correspond to each other and registered, retrieves the position registration database on the basis of an extension number of a PHS terminal when receiving a position registration request from the PHS terminal to obtain a public telephone number as a retrieved telephone number and registers the position registration request and the retrieved public telephone number to a position registration unit served by a PHS company through a PHS digital channel. Receiving an incoming call from the PHS digital channel, the private branch of exchange retrieves the position registration database on the basis of the incoming public telephone number to obtain the extension number as the retrieved extension number, makes an extension call to the PHS terminal and starts a speech.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a telephone line and a telephone line.
The present invention relates to a private branch exchange that is connected to an S digital line and can use a PHS terminal as a slave unit of a self-operated system.

[0002]

2. Description of the Related Art Generally, a privately owned system is provided with a private branch exchange (PBX), and this private branch exchange accommodates a telephone line. When a PHS terminal is used as a slave unit of such a self-managed system, the slave unit (PHS terminal) is in a standby state only in the self-management mode or in both the self-management mode and the public mode (mode for receiving radio waves from a public base station). Is available. In other words, the PHS terminal can be set not only in the self-operating mode (mode used as an extension phone (slave)) and the public mode (mode used as a general outside phone (PHS terminal)) but also in both modes. Mode can be set to be in standby mode.

[0003]

In the conventional private branch exchange, the incoming line differs depending on the mode. For this reason, even when the slave unit waits for both the self-service mode and the public mode, it is not possible for the private unit such as an office. In a place where radio waves for use are difficult to reach, there is a problem in that only the self-service mode results, and it becomes impossible to receive a call in the public mode.

For this reason, if the user of the slave unit is the caller, it is necessary to call back to the telephone number in the self-employed mode, and if the user of the slave unit is the callee, it is necessary to use a transfer telephone service, etc. It costs money.

[0005] It is an object of the present invention to provide a private branch exchange in which a called party can be called with one telephone number in either the public mode or the private mode.

[0006]

According to the present invention, there is provided a private branch exchange accommodating a telephone line and a PHS digital line and used when a PHS terminal is used as an extension unit. A location registration database in which an extension number and a public telephone number as the PHS terminal are associated with each other, and when a location registration request is issued from the PHS terminal, the location registration database is searched based on the extension number of the PHS terminal First means for obtaining the corresponding public telephone number as a search public telephone number, and registering the position registration request and the search public telephone number in a position registration device 15 provided by a PHS operator through the PHS digital line. A private branch exchange having a second means and a third means for reporting the registration completion to the PHS terminal when the registration is completed. It is.

In this exchange, when an incoming call is received from the PHS digital line, the location registration database is searched based on the incoming public telephone number obtained by the incoming call to obtain an extension number as a search extension number. Means, and the fifth means for starting a call when the PHS terminal responds by making an extension call to the PHS terminal when the search extension number is obtained, further from the PHS terminal When there is an outgoing call request, it checks whether or not the telephone line is occupied, and if the telephone line is occupied, if the PHS digital line has a free space, the other party's telephone number is transmitted to the PHS digital line to make a call. A sixth means for starting is provided. The sixth means is that when the transmission request includes a flag requesting transmission from the PHS digital line, the PHS digital line has a free space regardless of whether or not the telephone line is occupied. In such a case, the telephone number of the other party is transmitted to the PHS digital line to start a telephone call.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

Referring to FIG. 1, private branch exchange 14 has a PH
An S digital line 1 and a general line 2 are accommodated.
The private branch exchange 14 is connected to the extension telephone 12 and the input device (data registration device) 3, and the PHS terminal (slave unit) 13 communicates with the private branch exchange 14 by radio.

[0010] In order to receive a call from the PHS digital line 1 to the PHS terminal 13 registered as a slave unit in the private branch exchange 14, it is necessary to perform position registration with the position registration device 15 on the PHS network. The public telephone number information of the PHS terminal 13 is required for the position registration to the position registration device 15. In addition, extension number information is required for making and receiving private wireless communication. For this reason, the location registration database shown in FIG.

When updating the database, the input device 3 is connected to the external interface 11 and data is directly input. The update data from the external interface 11 is recognized by the control device 5, and the control device 5 updates the database based on the update data. The input device 3 is, for example, a dedicated input terminal, a general-purpose personal computer, or a key telephone with a screen. The external interface 11 includes a serial port, a parallel port, a data bus port, and the like.

Referring to FIG. 3, when performing location registration,
When the slave unit 13 is within the range of the private radio, the PHS terminal 1
A position registration request is made by a manual operation such as a power-on reset or a key operation in step 3 (step S1). On the other hand, when the PHS terminal 13 has moved from the private radio service area to the PHS service area, a position registration request is automatically made (step S).
1).

When there is a location registration request, the extension exchange device 9 detects this request via the radio controller 10, and transmits the location registration request and the extension number from the extension exchange device 9 to the control device 5. The control device 5 searches the location registration database in the memory 4 for the public telephone number of the PHS terminal 13 based on the extension number (step S2).

As a result of the search, if the corresponding public telephone number is registered (step S3), the control device 5
Exchange control to the digital line controller 2 for use to transfer the location registration message. PHS digital circuit switching equipment 6
To send a location registration request and a public telephone number. The PHS digital circuit switching device 6 starts a no-response monitoring timer (step S4). The PHS digital circuit switching device 6 creates a location registration completion message in accordance with the location registration request and the public telephone number, and
A call is sent to the location registration device 15 provided by the HS operator (step S5). If the corresponding public telephone number is not registered in step S3, control device 5 notifies extension switching device 9 of the extension number and the error.
Then, the extension switching device 9 sends the P
An error is notified to the HS terminal 13.

When the PHS digital circuit switching device 6 receives the location registration completion message from the location registration device 15 (step S6), the PHS digital circuit switching device 6 notifies the control device 5 of the location registration completion and the public telephone number. . When the PHS digital circuit switching device 6 fails in location registration, the control device 5 is notified of the error and the public telephone number.

To obtain the extension number, the control device 5 searches a location registration database in the memory 4 based on the public telephone number. As a result of this search, if there is a corresponding extension number, the control device 5 clears the no-response monitoring timer (step S7), and then notifies the extension exchange device 9 of the completion of the location registration and the corresponding extension number. If the relevant extension number is not found as a result of the search, the control device 5 discards the message and waits until the non-response monitoring timer times out. When the non-response monitoring timer times out (step S8), the control device 5 notifies the extension switching device 9 of the error and the extension number.

The extension switching device 9 notifies the PHS terminal 13 of the completion of location registration or an error via the radio control device 10 (step S9). In the case of an error, retransmission of the position registration request is performed.

Referring to FIGS. 4 and 5, when an incoming call is received from PHS digital line 1, the public telephone number obtained by the incoming call is transmitted from PHS digital circuit switching device 6 to control device 5. The control device 5 searches the location registration database in the memory 4 for the extension number corresponding to the public telephone number (step A1). In this search, when the extension number is searched (step A2), the control device 5 responds to the PHS digital circuit switching device 6 and notifies the PHS digital circuit switching device 8 to connect to the communication path switch circuit 8, and then the extension switching device. 9 to give the extension number and make an extension call request (step A
3). As a result of the above search, if the extension number cannot be detected, the control device 5 ignores the incoming call.

When there is a request for an extension call, the extension switching device 9 makes an extension call regardless of whether the slave unit 13 is out of the service area. At this time, an extension call may be made only when the child device is within the service area using the child device state table shown in FIG. In any case, if the service is out of the service area, the extension switching device 9 informs the control device 5 that the slave unit is out of service and disconnects the incoming call.

When the PHS terminal 13 responds to the extension call (step A4), the extension switching device 9 connects the extension to the communication path switch circuit 8, and then transmits a response to the control device 5 (step A5). The control device 5 includes a communication path switch circuit 8
To connect the call of the PHS digital circuit switching device 6 and the call of the extension switching device 9 to start the call.

Referring to FIG. 7, when there is a disconnection from PHS terminal 13, an end of call is notified to control device 5 via radio control device 10 and extension switching device 9. The control device 5 controls the PH
After instructing the S digital circuit switching apparatus 6 to disconnect the call, the connection of the communication path switch circuit 8 is released to end the call.

On the other hand, when there is a disconnection from the PHS digital line 1, the end of the call is notified to the control device 5 via the PHS digital line switching device 6. After instructing the extension switching device 9 to disconnect the call, the control device 5 disconnects the communication path switch circuit 8 and ends the call.

Referring to FIG. 8, when a call is originated, even from PHS terminal 13, the call is transmitted to a general line via extension exchange device 9, communication line switch circuit 8, and general line exchange device 7. Is performed. If you want to make a call using the PHS digital line 1 and the general line 2 is busy,
A call is made to the PHS digital line 1 via the PHS digital line switching device 6.

When dialing is performed from the PHS terminal 13 or the extension telephone 12, an outgoing call request is transmitted to the control device 5 via the extension switching device 9. At this time, if the general line 2 is completely occupied, or a manual operation is performed by pressing down a dedicated key or an arbitrary key combination before dialing, and a flag for making a call from the PHS digital line 1 is included in the call request (step P1) It is checked whether or not the PHS digital line 1 has a vacancy (step P2). If there is a vacancy, the control device 5 informs the PHS digital circuit switching device 6 of the telephone number of the other party and makes a call. It is instructed to do so (step P3).

When there is a response from the PHS digital circuit 1 (step P4), the PHS digital circuit switching device 6 notifies the control device 5 to that effect. The control device 5 instructs the communication line switch circuit 8 to connect the extension switching device 9 and the PHS digital line 1 (line switching: step P5), and starts a telephone conversation.

[0026]

As described above, according to the present invention, PH
There is an effect that the S terminal can be called with one telephone number regardless of whether it is in the public mode or the private mode.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a private branch exchange according to the present invention.

FIG. 2 is a diagram showing an example of a location registration database provided in the private branch exchange shown in FIG.

FIG. 3 is a flowchart for explaining location registration processing in the private branch exchange shown in FIG.

FIG. 4 is an incoming call sequence diagram for explaining an incoming call process in the private branch exchange shown in FIG. 1;

FIG. 5 is a flowchart for explaining an incoming call process in the private branch exchange shown in FIG.

FIG. 6 is a diagram showing a child device state indicating a current position of the child device.

FIG. 7 is a call termination sequence diagram for explaining a call termination process in the private branch exchange shown in FIG. 1;

FIG. 8 is a flowchart for explaining a calling process in the private branch exchange shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Digital line for PHS 2 General line 3 Input device 4 Memory 5 Control device 6 Digital line switching device for PHS 7 General line switching device 8 Communication line switch circuit 9 Extension switching device 10 Radio control device (base unit) 11 External interface 12 Extension Telephone 13 PHS terminal (slave unit) 14 Private branch exchange 15 Location registration device

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) KK15

Claims (4)

[Claims] 1. A private branch exchange accommodating a telephone line and a PHS digital line and used when a PHS terminal is used as an extension unit, wherein an extension number as the extension unit and a public telephone as the PHS terminal are provided. The PHS terminal has a location registration database associated with a number, and when a location registration request is received from the PHS terminal, the location registration database is searched based on the extension number of the PHS terminal to search for the corresponding public telephone number. First means for obtaining the location registration request and the search public telephone number as the PHS.
Having a second means for registering with the location registration device 15 provided by the PHS operator through a digital line for use, and a third means for reporting the completion of registration to the PHS terminal when the registration is completed. switch. 2. The private branch exchange according to claim 1, wherein when there is an incoming call from said PHS digital line, said location registration database is searched based on the incoming public telephone number obtained by said incoming call, and an extension number is retrieved. A fourth means for obtaining the extension as a search extension;
Fifth means for making an extension call to the HS terminal and starting a call when the PHS terminal answers. 3. The private branch exchange according to claim 1, wherein when a call request is issued from the PHS terminal, it is checked whether or not the telephone line is occupied. When there is P
A private branch exchange having sixth means for starting a telephone call by transmitting a telephone number of the other party to an HS digital line. 4. The private branch exchange according to claim 3, wherein the sixth means is configured such that, when the transmission request includes a flag requesting transmission from the PHS digital line, the telephone line is blocked. Regardless of whether or not there is a vacancy in the PHS digital line,
A private branch exchange wherein a telephone number is transmitted to a digital line for S to start a telephone call.