JPH1188956A - Automatic transfer device for personal handy phone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer an incoming call to a subscriber terminal as a personal handy phone system to a subscriber terminal as a stationary network telephone set automatically when the subscriber terminal as the personal handy phone system is resident at the outside of a service area of a base station. SOLUTION: It is identified that no subscriber terminal 11a is resident in a service area by detecting it that after transmission of an incoming call signal from a radio system controller 13 is sent to pluralities of radio base stations 121-123 and no reply signal is received within a prescribed period, and the identification result is informed to an ISDN exchange 14 via the radio system controller 13 by the provision of a terminal detection section 12a. The ISDN exchange 14 is provided with a transfer device having a conversion table memory 14a that transfers the notice automatically to a stationary network subscriber number corresponding to the personal handy phone system subscriber number being a destination when the ISDN exchange 14 receives the notice from the terminal detection section 12a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a PHS (Personal
More particularly, the present invention relates to an automatic transfer device for transferring an incoming call when a PHS subscriber terminal is out of a service area to a fixed network subscriber number.

[0002]

2. Description of the Related Art As is well known, in a PHS system, a PHS subscriber terminal is used as a simple portable telephone outdoors and as a cordless telephone handset indoors.
Further, in this system, a wireless base station peculiar to a wireless system is scattered, and when a PHS subscriber terminal is used outdoors, if it is within an area covered by each base station (a radio wave reach: service area). Make calls wherever you are.

[0003] Conventionally, as an example of an automatic transfer device in a telephone system, Japanese Patent Application Laid-Open No. 2-312494 has been proposed.
Japanese Unexamined Patent Publication (Kokai) No. H11-125702 discloses a private branch exchange accommodating a mobile telephone and a wired telephone having different telephone numbers. In this private branch exchange, when the installation state of the mobile phone changes,
In order to set a transfer destination, the status is notified via a radio base station and a radio system controller.

[0004] For example, when a portable telephone is installed or removed from a charger, incoming calls can be switched to a wired telephone or a portable telephone. That is, when the called party is at the seat (the mobile phone is installed in the charger), the incoming call is sent to the wired phone, and the subscriber leaves the seat with the mobile phone (the mobile phone is charged). Incoming call can be automatically sent to the mobile phone.

In this case, as shown in FIG. 4, when the mobile phone 1 is installed in a charger (not shown), the wireless system controller 3 is connected to the mobile phone 1 via the wireless base station 2.
Notify to. The wireless control device 3 having received the notification prompts the private branch exchange 4 to transfer and set the telephone number of the wired telephone 5 to the portable telephone 1, and upon receiving this, the private branch exchange 4 performs the specified process.

[0006] Conversely, when the mobile phone 1 is removed from the charger, a notification is sent from the mobile phone 1 to the radio system controller 3 via the radio base station 2 as in the case of installation. Upon receiving the notification, the wireless system control device 3 prompts the private branch exchange 4 to transfer the telephone number of the mobile phone 1 to the wired telephone 5, and the private branch exchange 4 receiving the notification performs the instructed process.

[0007] With the above arrangement, when the portable telephone 1 is installed in the charger, the incoming call to the portable telephone 1 is transferred to the wired telephone. An incoming call can be forwarded to a mobile phone.

[0008] However, the above-mentioned conventional example is used within a limited area of the premises, and if this technique is applied to a PHS system, when the PHS subscriber terminal is out of the service area of the base station, There is a problem that the transfer to the PHS subscriber terminal cannot be performed and the call with the caller cannot be performed.

[0009]

As described above, in the conventional PHS system, when the PHS subscriber terminal is out of the service area of the base station, it cannot be transferred to the PHS subscriber terminal and the call originates. There is a problem that it becomes impossible to talk with the person.

[0010] The object of the present invention is to solve the above-mentioned problems,
If the HS subscriber terminal is out of the service area of the base station, the incoming call to the PHS subscriber terminal as a simple portable telephone is automatically cordless without causing the caller to repeat the call with the fixed network subscriber number. An object of the present invention is to provide an automatic transfer device for a simple portable telephone system that can transfer a call to a PHS subscriber terminal as a telephone.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a method of transmitting and receiving data to and from a subscriber terminal as a simple portable telephone in a service area. Wireless base station and the plurality of wireless base stations are collectively managed, an incoming signal is transmitted into each service area through the plurality of wireless base stations, and an outgoing signal or response signal received by each wireless base station. A digital exchange that sends an incoming signal from a digital public line to the wireless system controller and sends an outgoing signal or a response signal from the wireless system controller to the digital public line; A fixed network switch that connects a public line to a fixed network and transmits and receives data to and from a subscriber terminal as a cordless telephone connected to the fixed network; In a simplified portable telephone system to which a simplified portable telephone subscriber number and a fixed network subscriber number are assigned, provided in each of the plurality of radio base stations, and within a predetermined period after transmitting an incoming signal from the radio system controller. A subscriber terminal detector that detects that there is no response signal in the service area by detecting that there is no response signal, and notifies the digital exchange of the identification result through the radio system controller; and And a transfer device provided in the digital exchange and automatically transferring, when receiving a report from the subscriber terminal detector, a fixed network subscriber number corresponding to a destination mobile phone subscriber number. It is.

[0012] In particular, the transfer device is characterized in that it has a notifying means for notifying the destination at the time of transfer that the subscriber terminal is out of the service area and transferring to the fixed network subscriber number.

Further, the transfer device is provided with a number conversion table memory in which fixed network subscriber telephone numbers corresponding to simple cellular telephone subscriber numbers are tabulated, and this memory is referred to at the time of transfer. I do.

That is, according to the present invention, when a caller makes a call to a subscriber terminal with a simplified cellular phone subscriber number and the subscriber terminal cannot make a call outside the service area, an announcement is made to the caller. In such a case, a notification to that effect is made, the call is automatically transferred to the fixed network subscriber number, and the call is sent to the corresponding fixed network subscriber terminal. As a result, it is possible to provide a service that allows a caller to make a call without knowing the two numbers assigned to the subscriber terminal.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 shows a schematic configuration of a PHS system according to the present invention.
HS subscriber terminal, 11b is P as a cordless telephone
HS subscriber terminal. Radio base stations 121, 122, 1
23,... Provide a service area in which incoming and outgoing calls can be made to the PHS subscriber terminal 11a as a simple portable terminal, and include a terminal detecting unit 12a for detecting the presence of the PHS subscriber terminal 11a. .

These radio base stations 121, 122, 12
Are controlled by the wireless system controller 13 as a whole. This radio system controller 13 receives an incoming signal from the ISDN exchange 14 into each of the radio base stations 121, 122, 123,.
To one of the radio base stations 1
, And sends a response signal or an outgoing signal from the ISDN exchange 14.

The ISDN exchange 14 has a conversion table memory 14a for incoming call transfer, and is connected to a fixed network exchange 15 through a public line. As its terminal, a PHS subscriber terminal 11b as a cordless telephone is connected. I have.

The operation of the above configuration will be described below in accordance with the schematic sequence shown in FIG.

First, when the caller makes a call to the PHS subscriber terminal 11a with the telephone number A of the portable cellular phone, the IS
, Through the DN network exchange 14 and the radio network controller 13, to transmit an incoming signal to the PHS subscriber terminal 11a. At this time, PH
S subscriber terminal 11a is a wireless base station 121, 122, 12
When the user is out of the service area of 3, ..., the response signal is naturally not received by the radio base station.

Since the radio base stations 121, 122, 123,... Do not receive a response signal within a predetermined time in the detection unit 12a, it is determined that the PHS subscriber terminal 11a is out of the service area.

Thereafter, the radio base stations 121, 122, 12
Are the ISDN exchanges 1 through the radio system controller 13
4 PHS subscriber terminal 11b as a cordless telephone
A transfer instruction is sent to transfer the call to the telephone number B.

In the ISDN exchange 14, as shown in FIG. 2, the telephone number conversion table memory 14a uses the telephone number A of the PHS subscriber terminal 11a as a simple portable telephone as an index for the telephone of the PHS subscriber terminal 11b as a cordless telephone. Search for number B. The numbers A, C, D,... Shown by * in FIG. 2 are registered numbers registered by other PHS terminal subscribers as cordless telephones.

After the search is completed, the ISDN exchange 14 forwards the call to the telephone number B, and receives a call via the fixed network exchange 15 to the PHS subscriber terminal 11b as a cordless telephone to enable a telephone call.

As is apparent from the above description, according to the configuration of the above-described embodiment, when the PHS subscriber terminal 11a used as a portable cellular phone by the caller cannot communicate outside the service area, the cordless The call is automatically transferred to the PHS subscriber terminal 11b used as a telephone to enable a telephone call.

This eliminates the need for the caller to dial the telephone number of the PHS subscriber terminal 11b as a cordless telephone again. In addition, the subscriber can make a call without notifying the caller of both the two telephone numbers (the telephone numbers of the portable cellular phone and the cordless telephone) assigned to the PHS subscriber terminal.

According to the present invention, the mobile phone determines whether or not to perform the transfer by determining whether or not the mobile phone has responded / not responded to the incoming call, instead of determining the transfer destination to which the mobile phone performs the transfer by installing / removing the charger as in the prior art. Is to make a judgment. Therefore, when the PHS subscriber terminal as a simple portable telephone is out of the service area with the wireless base station, it has a function of determining that there is no response and transferring the response to the fixed network subscriber terminal.

That is, in the prior art, the transfer is determined based on whether the portable telephone is installed or removed from the charger. In the present invention, however, the PHS subscriber terminal as a simple portable telephone is a radio base station. From the service area or out of the service area to determine whether or not to transfer.

As described above, the difference between the prior art and the present invention is the difference in the detection method for determining that the transfer is performed. The detection method according to the prior art determines whether the mobile phone is installed or removed from the charger and performs transfer. However, the detection method according to the present invention is based on the base station with the PHS subscriber terminal as a simple mobile phone. The station identifies whether it is within the service area or outside the service area, and performs transfer. Therefore, at the time of an incoming call, if there is no response when the PHS subscriber terminal as a simple portable telephone is out of the service area with the wireless base station, the call is transferred to the PHS subscriber terminal as a cordless telephone to enable a telephone call.

[0030]

As described above, according to the present invention, PH
When the S subscriber terminal is out of the service area of the base station, the incoming call to the PHS subscriber terminal as a simple portable telephone is automatically cordless without causing the caller to repeat the call with the fixed network subscriber number. It is possible to provide an automatic transfer device of a simple portable telephone system that can transfer a call to a PHS subscriber terminal as a telephone.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an automatic transfer device of a simplified cellular phone system according to the present invention.

FIG. 2 is an exemplary view showing a usage example of a conversion table memory provided in the ISDN exchange according to the embodiment;

FIG. 3 is an exemplary view showing a schematic sequence from an outgoing call to an incoming call according to the embodiment;

FIG. 4 is a block diagram showing a configuration of an automatic transfer device in a telephone system as a conventional technology example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Mobile telephone 2 ... Radio base station 3 ... Radio system controller 4 ... Private branch exchange 5 ... Wired telephone 11a ... PHS subscriber terminal as a simple portable telephone 11b ... PHS subscriber terminal as a cordless telephone 121, 122, 123 ... Radio base station 12a Terminal detection unit 13 Radio system controller 14 ISDN exchange 14a Conversion table memory 15 Fixed network exchange

Claims (3)

[Claims] 1. A plurality of radio base stations scattered at a plurality of points and each transmitting and receiving to and from a subscriber terminal as a simple portable telephone in a service area; A radio system controller for managing and transmitting an incoming signal to each service area through the plurality of radio base stations, and collecting a transmission signal or a response signal received by each radio base station; A digital exchange for transmitting an incoming signal from the public line and transmitting an outgoing signal or a response signal from the radio system controller to the digital public line, connecting the digital public line to the fixed network, and being connected to the fixed network; A fixed network exchange for transmitting and receiving to and from a subscriber terminal as a cordless telephone is provided, and each subscriber terminal is assigned a simple mobile telephone subscriber number and a fixed network subscriber number. In the simple mobile phone system to be applied, provided in each of the plurality of wireless base stations, within the service area by detecting that there is no response signal within a certain period after transmitting the incoming signal from the wireless system control device A subscriber terminal detector that identifies that there is no subscriber terminal, and notifies the digital exchange of the identification result through the radio system controller, and is provided in the digital exchange, and is provided from the subscriber terminal detector. A transfer device for automatically transferring, when a notification is received, to a fixed network subscriber number corresponding to the destination simple mobile phone subscriber number. 2. The transfer device according to claim 1, further comprising a notifying unit for notifying the destination that the subscriber terminal is outside the service area and transferring the call to the fixed network subscriber number when the transfer is performed. Item 1. An automatic transfer device for a simple portable telephone system according to Item 1. 3. The transfer device according to claim 1, further comprising a number conversion table memory storing a fixed network subscriber telephone number corresponding to the simplified mobile telephone subscriber number in a table, and referencing this memory during transfer. The automatic transfer device for a simplified portable telephone system according to claim 1.