JP3082066B2 - Private communication control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can be used for a communication service of a simplified portable telephone system (hereinafter, referred to as a PHS), and particularly, a private communication control device for providing a service in which a public PHS network and a private network are linked. About.

[0002]

2. Description of the Related Art Terminals under a private network include the following three.
There are different types of terminals. (A) A terminal that has been subscribed to the public PHS network and has also been pre-registered in the private network, and the same terminal can move between the private network area and the public PHS network area to make and receive calls. PHS terminal (hereinafter referred to as member terminal),
(B) Subscribed to the public PHS network, which allows the user to move within the area of the public PHS network and make outgoing / incoming calls, but is not pre-registered in the local area network, and therefore cannot make / receive calls in the local area area. A PHS terminal (hereinafter referred to as a visitor terminal) and (C) a wired terminal (hereinafter referred to as a wired terminal) accommodated in a PBX and capable of connecting to an extension and an external line.

[0003] In order to enable a wired terminal, a member terminal, and a visitor terminal to make and receive calls in the area of a private network, a configuration as shown in FIG. 16 has been conventionally used. In the figure, reference numeral 161 denotes a private network area, 162 denotes a public network area, and 163 denotes a public PHS network area in the public network area 162. Private network PB
Wired terminal 168 and member terminal 166 under X164
And extend the wireless base station (CS) 165 provided in the public PHS network to the private network area 161,
A visitor terminal 167 is accommodated under the subordinate.

In such a conventional configuration, (1) transmission from a wire terminal or a member terminal to a visitor terminal;
To perform (2) a call from a visitor terminal to a wired terminal or a member terminal, (3) a call from a visitor terminal to another visitor terminal, and (4) a call from a member terminal to another member terminal, respectively: Connection processing is performed.

(1) Transmission from a Wired or Member Terminal to a Visitor Terminal When a call is made from a wired or member terminal of a private network to a visitor terminal, the public PHS network number of the visitor terminal is dialed from the wired or member terminal. This allows
The location registration database of the public PHS network is searched, and if a visitor terminal exists in the area of the local network, communication between the extended CS and the visitor terminal is started.

(2) Call from a visitor terminal to a wired terminal or member terminal When a call is made from a visitor terminal on a private network to a wired terminal or member terminal, the dial-in number of the wired terminal or member terminal is dialed from the visitor terminal. This allows
The visitor terminal is connected to the public PHS network through the extended CS, and then communication with the wired terminal or member terminal of the local area network is started. The destination member terminal is public P
When the user is located in the HS network area, a public PHS number is dialed.

(3) Transmission from a visitor terminal to another visitor terminal When a call is made from a visitor terminal on the private network to another visitor terminal, the public PHS network number of the destination visitor terminal is dialed from the caller side visitor terminal. As a result, the originating visitor terminal is connected to the public PHS network through the extended CS, the location registration database of the public PHS network is searched, and if the destination visitor terminal exists in the area of the local network, the extended CS terminal is used. Communication between the terminal and the visitor terminal is started.

(4) Call from a member terminal to another member terminal When a call is made from a member terminal on the private network to another member terminal, the dial-in number or extension number of the destination member terminal is dialed from the calling member terminal. . The originating member terminal communicates with the destination member terminal via the PBX. If the destination member terminal is located in the public PHS network area, dial the public PHS number.

[0009]

The above-mentioned (1),
In the connection processing of (2) and (3), even if the calling terminal and the receiving terminal exist in the same premises, the public P
The public P must be connected via the HS network.
It is necessary to bear the HS network usage fee. Also, in the connection processing of (2) and (4), when the destination member terminal is located in the area of the private network, a call is made from the calling side with a dial-in number or extension number. When you move to the area of the net, the public P
Must be called by HS number. Usually, the caller does not know whether the destination member terminal is in the area of the private network or in the area of the public PHS network, and must call back when there is no destination member terminal in the area dialed first.

Accordingly, an object of the present invention is to provide an extension in a private network when a calling terminal and a called terminal are present in the same premises in the connection processing of (1), (2) and (3) of the prior art. An object of the present invention is to provide a local communication control device capable of providing a low-cost communication service by performing a connection.

Another object of the present invention is to provide a connection between a private network area and a public P
It is an object of the present invention to provide a local communication control device which enables a follow-up connection to a member terminal moving in an area of an HS network.

[0012]

SUMMARY OF THE INVENTION The present invention provides a PHS in a private network connected to a public PHS network by a communication path.
The present invention relates to a local communication control device that includes a PBX for managing terminals and controls communication to and from terminals existing in a local network. The PBX refers to a local network location registration database for registering PHS terminals located in the local network managed by the PBX and a local network location registration database when a call from a terminal in the local network to the PHS terminal occurs. Determining means for determining whether the PHS terminal is located in the private network,
When the PHS terminal is located in the private network by the determination means, means for making a connection between the calling terminal and the PHS terminal in the private network, the extension number of the PHS terminal given the extension number and the PHS terminal Telephone number conversion means for mutually converting the public PHS number with the public PHS number. As a result, if the receiving terminal is located in the public PHS network, it is possible to make a chase connection in which the terminal is connected to the public PHS network.

[0013] The PBX preferably further comprises registration means for registering the PHS terminal in the local network location registration database when the PHS terminal enters the local network.

[0014] Preferably, the registration means is a terminal authentication means for confirming the PHS terminal subscription registration to the public PHS network.

[0015] The PBX may further include location registration notifying means for notifying the public PHS network that the PHS terminal has been registered in the local network location registration database.

A public PHS network side registration database for registering PHS terminals residing in the public PHS network, and a notification that the PHS terminals are residing in the public PHS network to the private network. Preferably, means are provided.

When the PBX receives a notification from the public PHS network that the PHS terminal is located in the public PHS network, the PBX instructs the above private network location registration database to delete the registration of the PHS terminal. Preferably, the method further comprises:

[0018]

It is preferable that the PBX further includes a charging means for independently charging the PHS terminal when a PHS terminal located in the private network transmits a signal to a terminal in the private network. As a result, the private network operator can freely set the charge for the facility usage fee of the private network.

[0020]

FIG. 1 is a diagram schematically showing a configuration in which a call is transmitted from a wired terminal or a member terminal existing in a private network to a visitor terminal as an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a private network area, reference numeral 2 denotes a public network area, and reference numeral 3 denotes a public PHS network area in a public network area 3. PBX is on the premises network
A (private branch exchange) 4 and a radio base station (CS) 5 of a PHS terminal connected to the PBX 4 are provided. As shown in the figure, a member terminal 6 and a visitor terminal 7 are located in the area 1 of the private network and the area 3 of the public PHS network, and a wired terminal 8 exists in the area 1 of the private network. I have. In the PBX 4 of the private network, in addition to various components provided in the ordinary PBX, a location registration database 9, a telephone number conversion means 10, a unique charging means 1 of the private network
1. Notification means 12 for notifying location registration to the public PHS network;
And a means 13 for inquiring the public PHS network. The public PHS network has a location registration database 14 in the public PHS network and a means 15 for notifying the private network.
Is provided. A communication path 16 is provided between the PBX 4 and the public network, and a control information transmission path 18 is provided between the notification means 12 and the inquiry means 13 of the PBX 4 and the notification means 15 of the public PHS network. .

Before describing the transmission operation from the wired terminal or the member terminal to the visitor terminal in this embodiment, first, the local network position registration processing and the local network position registration deletion processing operation of the visitor terminal will be described.

(Local Network Location Registration Process) When the visitor terminal 7 enters the private network area 1, the PBX 4 performs the local network location registration process of the visitor terminal 7. FIG. 2 shows this processing flow, and FIG. 3 explains the signal flow in that case.

When entering the private network area 1, the visitor terminal 7
Accesses the local network CS5 and first requests the location registration database 9 of the PBX 4 to register (step S2).
1). PBX 4 is a means 13 for inquiring the public PHS network
A terminal authentication method for confirming the PHS terminal registration and a method for collecting a fee for use in the private network are controlled by the control information transmission line 18.
To the public PHS network through
2).

If it can be confirmed through the control information transmission line 18 that the visitor terminal 7 is a legitimate terminal that is subscribed to the public PHS network and that the fee collection can be performed reliably (steps S23 and S24), the PBX 4 Performs local network location registration in the location registration database 9. At the same time, the location is notified to the public PHS network by means of the location register 12 and the public PHS network location registration database 14 is notified.
The location is also registered (step S25). If the visitor terminal 7 cannot be confirmed to be a legitimate terminal, the PB
X4 issues a location registration rejection notification to the terminal 7,
No position registration is performed (step S26).

(Private network location registration erasure processing) When the visitor terminal 7 moves to the area 3 of the public PHS network, the PBX 4
Then, a local network position registration erasure process of the visitor terminal 7 is performed.
FIG. 4 shows this processing flow, and FIG. 5 explains the signal flow in that case.

The visitor terminal 7 is located in the area 3 of the public PHS network.
When the public PHS network moves to the public PHS network, the public PHS network registers the fact in the location registration database 14 of the public PHS network and notifies the local network that has been located that the visitor terminal has been registered in the public PHS network. The notification is made by the means 15 through the control information transmission line 18 (step S41).
Upon receiving this notification, the PBX 4 deletes the location registration information of the visitor terminal 7 from the location registration database 9 of the PBX 4 (Step S42).

(Process for Outgoing Connection from Wired Terminal or Member Terminal to Visitor Terminal) FIG. 6 shows this processing flow. When a call is sent from the wired terminal 8 or the member terminal 6 of the private network to the visitor terminal 7, the public PHS number of the visitor terminal 7 is dialed from the wired terminal or the member terminal 6 (step S61). The PBX 4 searches the location registration database 9 of the PBX 4 to determine whether the public PHS number is a number existing in the private network (steps S62 and S6).
3). When the public PHS number exists in the location registration database 9 of the PBX 4, the destination visitor terminal 7 exists in the private network, and the PBX 4 does not pass through the public PHS network.
A connection is made by closing the private network (steps S64 and S64).
65). If it does not exist in the database, it connects to the public PHS network (step S66). Accordingly, when the visitor terminal 7 exists on the private network, it is not necessary to go through the public PHS network, so that a fee for using the public PHS network is unnecessary, and a low-cost communication service can be provided.

FIG. 7 is a diagram schematically showing a configuration in which a call is transmitted from a visitor terminal in a private network to a wired terminal or a member terminal in the private network as another embodiment of the present invention. is there. Each component in the figure is almost the same as that in FIG. 1, and therefore the same reference numeral is given and the description is omitted here.

Also, the local network location registration processing when the visitor terminal enters the private network and the local network location registration erasing processing operation when the visitor terminal leaves the private network and enters the public PHS network are the operations in the embodiment of FIG. The processing is exactly the same as the (local network location registration processing) and the (local network location registration erasing processing), and thus the description thereof is omitted.

(Process of Outgoing Connection from Visitor Terminal to Wired Terminal in Private Network) FIG. 8 shows a flow including the process in this case. When calling from the visitor terminal 7 on the private network to the wired terminal 8 on the private network, the dial-in number or extension number of the wired terminal 8 is dialed from the visitor terminal 7 (step S81). The visitor terminal 7 charges a fee according to the registered contents since the local network position registration processing has already been performed (step S82). The PBX 4 analyzes the dial-in number or the extension number (step S83) and confirms that the terminal is the wired terminal 8 of the private network (step S85).
If it is the wired terminal 8 of the private network, it is determined whether or not the dialed number is an extension number (step S8).
6) If it is an extension number, it is converted to an extension number by the telephone number conversion means 10 if it is a dial-in number (step S88), and the connection is made only within the private network (step S87). Thus, the wired terminal 8 of the private network is
To connect to the public PHS network without having to go through the public PHS network.
There is no need to use the HS network, and low-cost communication services can be provided.

(Process of Outgoing Connection from Visitor Terminal to Member Terminal of Private Network) This processing flow is also shown in FIG. When a call is made from the visitor terminal 7 on the private network to the member terminal 6 on the private network, the dial-in number, extension number or public PHS number of the member terminal 6 is dialed from the visitor terminal 7 (step S81). Visitor terminal 7
Is charged according to the registered contents because the local network position registration processing has already been performed (step S82). The PBX 4 analyzes the dial-in number, extension number or public PHS number (step S83) and searches the private network location registration database 9 (step S84) to determine that the member terminal 6 is located in the private network. Confirm (step S85). If the member terminal 6 is located in the private network, it is determined whether or not the dialed number is an extension number (step S86). If the dialed number is an extension number, the telephone number is converted. Means 1
After the dial-in number or the public PHS number is converted into an extension number by 0 (step S88), a closed connection is made in the private network (step S87). As described above, the connection with the member terminal of the private network does not need to be performed via the public PHS network, so that the use fee of the public PHS network becomes unnecessary, and a low-cost communication service can be provided.

(Process of Outgoing Connection from Visitor Terminal to Member Terminal of Public PHS Network) This processing flow is also shown in FIG. When the member terminal 6 is moving to the area 3 of the public PHS network, the PBX 4 recognizes from the local network location registration database 9 of the member terminal 6 that the member terminal 6 is moving to the public PHS network. . This is performed by a member terminal location registration change process described later.

When a call is made from the visitor terminal 7 on the private network to the member terminal 6 on the public PHS network, the dial-in number, extension number or public PHS number of the member terminal 6 is dialed from the visitor terminal 7 (step S81). The visitor terminal 7 charges a fee according to the registered contents since the local network position registration processing has already been performed (step S82). PB
X4 is the dial-in number, extension number or public PHS
The number is analyzed (step S83) and the local network location registration database 9 is searched (step S84) to confirm that the member terminal 6 is located in the public PHS network area 3 (step S85). Next, when the connection request from the visitor terminal 7 is requested by the dial-in number or extension number of the member terminal 6 (step S89), the telephone number conversion means 10 converts it into the public PHS number of the member terminal 6 ( Step S90),
Connect to the public PHS network (step S91). When the connection request from the visitor terminal 7 is requested by the public PHS number of the member terminal 6 (step S89), the connection is made to the public PHS network without performing the number conversion (step S91).
As a result, the local area network and public PHS
A chasing connection of a member terminal moving to and from a network can be provided.

(Member terminal location registration change processing) FIG. 9 shows a signal flow in this case. As can be understood from the figure, when the member terminal 6 moves to the area 3 of the public PHS network, the fact is registered in the location registration database 14 of the public PHS network, and the notification means 15 transmits the information through the control information transmission line 18 through the control information transmission path 18. The PBX 4 is notified that the position of the member terminal 6 has been registered in the public PHS network. In response to this notification, the location registration information of the member terminal 6 in the local network location registration database 9 of the PBX 4 is rewritten to the content indicating that the member terminal 6 is located in the public PHS network.

(Independent Charge Processing of Private Network) When a call is transmitted from the visitor terminal 7 on the private network to the wired terminal 8 or the member terminal 6 of the private network, the visitor terminal 7 uses and uses the facilities of the private network. At this time, the billing of the visitor terminal 7 connected to the private network can be performed by the private billing unit 11 by the operation of the unique billing means 11 (step S8).
2). For this reason, it is possible to charge a facility usage fee for the private network, which is different from the public PHS network usage fee and is set by the private network. This billing information is charged to the user according to the fee collection method of the public PHS network.

FIG. 10 is a diagram schematically showing a configuration in a case where a call is transmitted from a visitor terminal on a private network to another visitor terminal as still another embodiment of the present invention. Each component in the figure is almost the same as that in FIG. 1, and therefore the same reference numeral is given and the description is omitted here.

Also, the local network location registration processing when the visitor terminal enters the private network and the local network location registration erasing processing operation when the visitor terminal leaves the private network and enters the public PHS network are the operations in the embodiment of FIG. The processing is exactly the same as the (local network location registration processing) and the (local network location registration erasing processing), and thus the description thereof is omitted.

(Process for Outgoing Connection from a Visitor Terminal on the Private Network to Another Visitor Terminal) FIG. 11 shows a processing flow in this case. When a call is transmitted from the visitor terminal 7 on the private network to another visitor terminal 7, the public PHS number of the destination visitor terminal 7 is dialed from the caller-side visitor terminal 7 (step S111). After performing the same billing process as in the above-described embodiment as necessary (step S112), the PBX 4 analyzes the public PHS number (step S113), and searches the private network location registration database 9 (step S114). ) To determine whether the public PHS number is a number existing in the private network (step S115). When on the private network, PBX4 is public PH
The connection is made by closing the private network without passing through the S network (step S116). If it is not on the private network, it connects to the public PHS network (step S117). This enables communication with the destination visitor terminal. With this method, the originating visitor terminal can connect to the destination visitor terminal existing on the private network without passing through the public PHS network, and
There is no need to use the S network, and a low-cost communication service can be provided.

FIG. 12 is a diagram schematically showing a configuration in which a member terminal on a private network transmits to another member terminal as still another embodiment of the present invention.
Each component in the figure is almost the same as that in FIG. 1, and therefore the same reference numeral is given and the description is omitted here.

(Process for Outgoing Connection from Member Terminal on Private Network to Another Member Terminal) FIG. 13 shows a processing flow in this case. When a call is made from a member terminal 6 on the private network to another member terminal 6, the calling member terminal 6 dials the public PHS number or extension number of the destination member terminal 6 (step S131). PBX4
Analyzes the number (step S132) and searches the local network location registration database 9 (step S133).
Thus, it is determined whether the number is a number existing in the private network (step S134). When the PBX 4 is on the private network, the PBX 4 closes and connects to the private network without passing through the public PHS network (step S136). This enables communication with the destination member terminal 6. According to this method, the originating member terminal 6 does not need to connect to the member terminal 6 existing on the private network via the public PHS network, so that the use fee of the public PHS network is not required and the inexpensive communication service is provided. be able to.

If it is not on the private network, it connects to the public PHS network (step S140). When the destination member terminal 6 is moving to the area of the public PHS network, the PBX 4
Recognizes from the member terminal location registration database 9 that the member terminal 6 is moving to the public PHS network. This is performed by the above-described embodiment (position registration change processing of member terminals).

FIG. 14 shows that the destination member terminal is a public PH.
It shows the flow of signals when the connection request from the originating member terminal is in the area of the S network and is requested by the extension number of the destination member terminal. If it is determined that the destination member terminal is within the area of the public PHS network (step S134 in FIG. 13), it is determined whether the number dialed by the caller is an extension number (step S13).
8). When the request is made with the extension number, the telephone number is converted into the public PHS number of the destination member terminal by the telephone number converting means 10 (step S139), and the terminal is connected to the public PHS network (step S140). When the connection request from the calling member terminal is requested by the public PHS number of the destination member terminal, the terminal is connected to the public PHS network without performing the number conversion (step S140). As a result, it is possible to provide the originating member terminal with a chase connection of the destination member terminal moving on the private network and the public PHS network.

FIG. 15 shows a signal flow when the destination member terminal is in the private network and a connection request from the calling member terminal is requested by the public PHS number of the destination member terminal. If it is determined that the destination member terminal is in the private network (step S134), it is determined whether the number dialed by the caller is an extension number (step S135). When requested by the public PHS number, the telephone number is converted into the extension number of the destination member terminal by the telephone number conversion means 10 (step S137),
Connection is made within the private network (step S136). When the connection request from the originating member terminal is requested by the extension number of the destination member terminal, the connection is made within the private network without performing the number conversion (step S136).

Also in this embodiment, the PBX 4 can operate the unique charging means 11 and perform the same charging processing as in the above-described embodiment if necessary.

The above-described embodiments are all illustrative of the present invention and are not intended to limit the present invention, and the present invention can be embodied in various other modified forms and modified forms. Therefore, the scope of the present invention is defined only by the appended claims and their equivalents.

[0047]

As described above in detail, according to the present invention, the PBX is a private network location registration database for registering PHS terminals located in the private network managed by the PBX, and a terminal in the private network. Means for determining whether or not the PHS terminal is located in the private network by referring to the private network location registration database when a call is made from the PHS terminal to the PHS terminal. Means for establishing a connection between the calling terminal and the PHS terminal within the private network when the service area is covered. Therefore, if the receiving terminal is in the same local area network, the caller does not need to use the public PHS network, and can provide an inexpensive communication service. In particular, according to the present invention, the PBX comprises the extension number of the PHS terminal given the extension number and the public PH of the PHS terminal.
Telephone number conversion means for mutually converting between S numbers. As a result, if the receiving terminal is located in the public PHS network, it is possible to make a chase connection in which the terminal is connected to the public PHS network.

Further, the private communication control apparatus of the present invention
By further providing means for notifying location registration to the HS network, independent charging means for the private network, inquiry means for the public PHS network, telephone number conversion means, and notification means for the public PHS network, even if visitor terminals are mixed. To realize private communication that does not require connection via the public PHS network but can be provided only in the private network, that enables member terminal chasing connection service, and that allows independent charging on the private network. Can be.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a configuration in a case where a call is transmitted from a wired terminal or a member terminal existing in a private network to a visitor terminal as one embodiment of the present invention.

FIG. 2 is a flowchart showing processing of a private network when a visitor terminal enters a private network area in the embodiment of FIG. 1;

FIG. 3 is a diagram showing a signal flow when a visitor terminal enters a private network area in the embodiment of FIG. 1;

FIG. 4 is a diagram showing an embodiment in which the visitor terminal is a public P
It is a flowchart which shows the process of the private network when it enters the area of the HS network.

FIG. 5 is a diagram showing an embodiment in which the visitor terminal is a public P
FIG. 3 is a diagram showing a signal flow when entering an area of an HS network.

FIG. 6 is a flowchart showing a call connection process from a wired terminal or a member terminal of a private network to a visitor terminal in the embodiment of FIG. 1;

FIG. 7 is a diagram schematically showing a configuration in a case where a call is transmitted from a visitor terminal on a private network to a wired terminal or a member terminal as another embodiment of the present invention.

FIG. 8 is a flowchart showing an outgoing connection process from a visitor terminal on a private network to a wired terminal or a member terminal in the embodiment of FIG. 7;

FIG. 9 is a diagram showing an embodiment in which the member terminal is a public P
FIG. 3 is a diagram showing a signal flow when entering an area of an HS network.

FIG. 10 is a diagram schematically showing a configuration in a case where a call is transmitted from a visitor terminal on a private network to another visitor terminal as still another embodiment of the present invention.

FIG. 11 is a flowchart showing an outgoing connection process from a visitor terminal on a private network to another visitor terminal in the embodiment of FIG. 10;

FIG. 12 is a diagram schematically showing a configuration in a case where a call is transmitted from a member terminal on a private network to another member terminal as still another embodiment of the present invention.

FIG. 13 is a flowchart showing an outgoing connection process from a member terminal on the private network to another member terminal in the embodiment of FIG.

FIG. 14 is a diagram showing a signal flow when the extension number of a member terminal in the public PHS network is dialed in the embodiment of FIG.

FIG. 15 is a diagram showing a signal flow when a public PHS number of a member terminal in a private network is dialed in the embodiment of FIG.

FIG. 16 is a diagram schematically showing a configuration example in a conventional technique.

[Explanation of symbols]

 Reference Signs List 1 area of private network 2 area of public network 3 area of public PHS network 4 PBX 5 wireless base station device (CS) 6 member terminal 7 visitor terminal 8 wired terminal 9 private network location registration database 10 telephone number conversion means 11 private network Original billing means 12 Notification means for notifying location registration to the public PHS network 13 Means for inquiring to the public PHS network 14 Location registration database in the public PHS network 15 Notification means for the local network 16 Communication path 18 Control information transmission path

Continuation of the front page (56) References JP-A-63-36625 (JP, A) JP-A-6-133358 (JP, A) JP-A-2-222222 (JP, A) JP-A-5-103369 (JP) , A) JP-A-7-177562 (JP, A) JP-A-6-152745 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04B ⁷ /24-7/26 H04Q 7/06-7/38

Claims (7)

(57) [Claims] 1. A private communication control device comprising a PBX for managing PHS terminals in a private network connected to a public PHS network via a communication path, and controlling communication to and from a terminal existing in the private network. A private network location registration database for registering PHS terminals located in a private network managed by the PBX;
When a call originates from a terminal in the private network to the PHS terminal, the terminal refers to the private network location registration database and
Determining means for determining whether or not the S terminal is located in the private network; and, if the PHS terminal is located in the private network by the determining means, between the originating terminal and the PHS terminal in the private network And a PHS with an extension number
A private communication control device comprising: telephone number conversion means for mutually converting the extension number of the terminal and the public PHS number of the PHS terminal. 2. When the PHS terminal enters its private network, the PBX stores the PH in the private network location registration database.
The apparatus according to claim 1, further comprising a registration unit for registering the S terminal. 3. The apparatus according to claim 2, wherein said registration means includes a terminal authentication means for confirming subscription registration of said PHS terminal to said public PHS network. 4. The PBX informs the public PH that a PHS terminal has been registered in the local area network location registration database.
4. The apparatus according to claim 2, further comprising a location registration notifying unit for notifying the S network. 5. A public PHS network location registration database for registering a PHS terminal residing in the public PHS network on the public PHS network side, and a message indicating that the PHS terminal is residing in the public PHS network. The apparatus according to any one of claims 1 to 4, further comprising: notification means for notifying the user. 6. The PBX, wherein a PHS terminal is provided for the public P
Means for instructing the local network location registration database to delete the registration of the PHS terminal when the public PHS network is notified that the PHS terminal is located in the HS network. The apparatus according to claim 5, wherein: 7. The PBX, when a PHS terminal located in the local area network transmits a call to a terminal in the local area network,
The apparatus according to any one of claims 1 to 6, further comprising a billing means for billing the S terminal independently.