JPH09214600A - Public/private protocol converter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To receive a call from a communication network in the public mode by controlling a speech signal exchange section and sending/receiving a control signal between a private mode frame disassembly/assembly section and a public mode frame disassembly/assembly section. SOLUTION: A signal from a master set 4 or a PHS line 5 is disassembled by a private mode frame disassembly/assembly section 12 and a public mode frame disassembly/assembly section 14 and the result is sent to a control means 11 as control signals 16. A cross reference table between a private mode extension number being a telephone set of a PHS slave set to be supported and a telephone number of the public mode is stored in advance in a storage medium in the inside of the control means 11. Then a processor of the control means 11 extracts data corresponding to the telephone number from the received control signal 16 and converts the data with the cross reference table and assembles the control signal 16 again with other required data and sends the control signal 16. Thus, a call from the communication network of the public mode is received within an area of the master set in the private mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple portable telephone system (hereinafter referred to as PHS: Personal H) which is one form of telephone communication.
andy-Phone System)).

[0002]

2. Description of the Related Art Generally, as shown in FIG. 5, for example, a PHS connects a base station 3a, 3b equipped with a wireless transmitter / receiver to a PHS line 5 which is a wired communication network, and a slave unit 2a which is a mobile telephone. 2b and the base stations 3a and 3b are connected via radio waves to provide a wireless telephone service.
Here, the inside of the circle corresponding to each of the base stations 3a and 3b in FIG. 5 corresponds to this wireless service area. Even in such a PHS, both outgoing and incoming calls are possible as in the existing telephone system.

A calling operation in the PHS is activated by a calling operation of the slave units 2a and 2b by a user. That is, the slaves 2a and 2b transmit to the communication network connected by the PHS line 5 through the nearby base stations 3a and 3b.
This connection sequence is based on the existing ISDN communication network (INS6
4 etc.) is similar to the digital telephone call operation.

On the other hand, in the case of an incoming call, the PHS communication network has a function that the existing ISDN communication network does not have. That is, there is a database in the communication network in which the current positions of the slaves 2a and 2b are registered in order to give an incoming call to the slaves (mobile phones) 2a and 2b. The cordless handsets 2a and 2b recognize the area information transmitted from the nearby base stations 3a and 3b (for example, a zone in which a plurality of base stations are grouped together, and an incoming signal is handled in units of zones), and the slave units 2a and 2b themselves. Is compared with the area information held by. Then, if the compared results do not match, the child device 2a performs position registration in the database. After that, when an outgoing operation is performed from the network to the slave unit 2a, that is, when there is an incoming call request to the slave unit 2a, the position information of the slave unit 2a is searched from the position information in the database. , Send an incoming signal to the area.

In such a PHS communication network, the distance over which the base stations 3a, 3b and the slaves 2a, 2b can communicate is several hundred meters, and the base stations 3a, 3b.
Are usually installed outdoors. For this reason, it is difficult for radio waves to reach indoors, and it may be impossible to make a call depending on the location. In addition, since radio waves cannot enter from the outside in a closed space such as the inside of a certain facility, a call cannot be made unless the antennas of the base stations 3a and 3b are installed in such a space.

Further, as in the case of the handset 2c shown in FIG. 5, a call cannot be made outdoors even if there are no base stations 3a and 3b nearby. Since such base stations 3a and 3b are installed by a telecommunications carrier, a PHS user cannot make a call in an area or facility that is not included in the telecommunications carrier installation plan.

[0007]

By the way, PHS has two types of modes, a public mode and a self-employed mode.
The slave unit of S can select these two modes.
In the public mode, the base stations 3a, 3b and the slaves 2a, 2b installed by the communication company as described above wirelessly communicate with each other and the user talks. On the other hand, in the self-employed mode, the master unit 4 and the slave unit 2d installed by the user wirelessly communicate with each other, and the user talks. This base unit 4
Connected to a general subscriber line 6 (hereinafter referred to as a general line), the user of the cordless handset 2d is a cordless cordless handset 2d of the parent device 4.
As a result, a call is made using the general line 6.

Even in the case of such a self-employed mode,
Calling can be performed in the same manner as calling in public mode. However, the incoming call in the self-employed mode cannot be performed in the same way as the incoming call in the public mode. That is, in the case of the self-employed mode, the general line 6 is used, but since this general line 6 does not have the function of managing the position of the child device 2d, it is unknown whether or not the child device 2d exists at that position. . Further, since the incoming call is made to the telephone number corresponding to the base unit 4 on the general line 6, it is confirmed only to call regardless of whether or not the handset 2d exists in the area of the base unit 4. There was no means.

The present invention has been made in view of the above point, and an object of the present invention is to set a slave unit 2d existing at an arbitrary position in a public mode as long as it is in the area of the master unit 4 in the self-employed mode. It is to provide a public / private protocol conversion device capable of giving an incoming call from a communication network.

[0010]

In order to solve the above-mentioned problems, the present invention connects to the master unit 4 in the self-employed mode and decomposes the self-employed mode frame into the call signal 15 and the control signal 16 or controls the call signal 15 and the control signal 16. The private mode frame disassembling / assembling unit 12 that assembles from the signal 16 and the public mode frame that is connected to the PHS line 5 to the call signal 15 and the control signal 16
A public mode frame disassembly / assembly unit 14 for disassembling into or disassembling or assembling from the call signal 15 and the control signal 16.
A call signal exchanging unit 13 for adjusting the exchange of a call signal 15 between the self-employed mode frame disassembling / assembling unit 12 and the public mode frame disassembling / assembling unit 14, and controlling the call signal exchanging unit 13 and The control means 11 for exchanging the control signal 16 between the self-employed mode frame disassembly / assembly unit 12 and the public mode frame disassembly / assembly unit 14 is provided.

Further, when an incoming call is received from the PHS line 5 to the slave unit 2d, a slave unit number managing means for converting a public mode telephone number into an extension number in the self-employed mode, a protocol of the PHS line 5 and a main unit 4 side. And a protocol exchange means for terminating the respective line protocols and exchanging information extracted at the respective terminal parts with each other, and receiving a special number from the base unit 4 side or receiving a predetermined control signal, The position registration means for position registration with the PHS line 5 and the incoming signal from the PHS line 5 are used to receive the incoming signal from the PHS line 5 to the corresponding handset 2d via the base unit 4 using the handset number management means and the protocol conversion means. A call control means for giving an incoming call is provided.

[0012]

Next, an embodiment of the present invention will be described. FIG. 1 is a block diagram showing a basic configuration of a public / private protocol conversion device according to the present invention. In the figure, 1 is a public / self-employed conversion protocol device main body, 11 is control means, 12 is a self-employed mode frame disassembly / assembly unit, 13
Is a call signal exchange unit, and 14 is a public mode frame disassembly / assembly unit. Further, as shown in FIG. 2, the public / private protocol conversion device 1 is connected between the PHS line 5 and the master unit 4. Here, the parent device 4 is interpreted in a broad sense to include a key telephone device having a wireless function and a PBX in addition to the parent device used for general personal use.

The public mode frame disassembly / assembly unit 14
A signal from the PHS line 5 is received, and a call signal 15 which is a call voice signal and a control signal 16 for controlling the call
Decompose into and, or vice versa. Specifically, layer 1 (physical layer) of "T reference point" in ISDN
Devices are used.

The self-employed mode disassembling / assembling unit 12 receives the call signal 15 in which the channel is adjusted and the control signal 16 in which the protocol is converted, synthesizes these, assembles the frame, and then self-employs. It is sent to the master unit 4 in the mode or the reverse operation is performed. Specifically, the layer 1 device on the network side of the "S reference point" in ISDN is used.

The call signal exchange section 13 receives the call signal 15, adjusts the channel to an appropriate one by the channel control 17 from the control means 11, and then again calls signal 15
Is sent out. Specifically, the call signal for each channel multiplexed on the time axis (time division multiplexing) is taken out,
Alternatively, a time switch for writing is used.

The control means 11 receives the control signal 16 (L
Analysis of the APD protocol frame structure)
It is determined which channel of the call signal 15 received from the S line 5 side is to be sent as the call signal 15 of the master unit 4 side, and the channel control 17 is given to the call signal exchange unit 13. Also, P
The control signal 16 received from the HS line 5 side is protocol-converted and sent to the master unit 4 side. The signal received from the master unit 4 in the self-employed mode is processed in the same manner and sent to the PHS line 5. Specifically, since the control signal 16 has a frame structure of the LAPD protocol (layer 2) in ISDN, the layer 3 information extracted from the HDLC controller or the LAPD controller is processed by the processor and its peripheral devices (including program software). To analyze.

In this way, the PHS line 5 and the master unit 4 in the self-employed mode are connected, and the incoming call to the slave unit, that is, PH
The PHS simultaneous call by the S line 5 (within the registered area) can also be performed in the parent device 4. The call signal 15 is not limited to a voice signal and may be a communication signal for data transfer. In addition, base unit 4
The accommodating line on the side of the PHS or on the PHS line 5 does not necessarily have to be a single line, and may be a plurality of lines. In this case, each accommodation line is controlled by a well-known telephone exchange technique.

[0018]

Next, a more specific operation of the apparatus according to the present invention will be described. The device according to the present invention has a slave unit number management unit, a protocol conversion unit, a position registration unit, and a call control unit in order to connect the PHS line 5 in the public mode and the master unit 4 in the self-employed mode. The contents of each function will be described below.

(1) Slave unit number management means As shown in FIG. 3, between the master unit 4 side and the PHS line 5 side,
Performs mutual conversion between public mode telephone numbers and private mode extension numbers. This function is ensured by the self-employed mode frame disassembly / assembly unit 12, the control means 11, and the public mode frame disassembly / assembly unit 14 in the configuration shown in FIG. That is, the signal on the base unit 4 side or the PHS line 5 side is decomposed by the private mode frame disassembly / assembly unit 12 and the public mode frame disassembly / assembly unit 14, and the control signal 16 respectively.
Is sent to the control means 11. On the storage medium inside the control means 11, a correspondence table of the extension numbers in the private mode of the telephone numbers of the PHS slaves to be supported and the telephone numbers in the public mode is stored in advance. And the control means 11
The processor extracts the data corresponding to the telephone number from the transmitted control signal 16, converts the data according to the above correspondence table, and then synthesizes the control signal 16 together with other necessary data and transmits it.

(2) Protocol conversion means As shown in FIG. 4, the protocol of the line on the side of the base unit 4 and the PH
The protocol on the S line 5 side is terminated. In the self-employed mode protocol terminating unit and the public mode protocol terminating unit in FIG. 4, the protocol is terminated, and information is extracted and sent to the other protocol terminating unit. Upon receiving this information, the other protocol termination unit reorganizes the information into the other protocol and sends it. This function is ensured by the self-employed mode frame disassembly / assembly unit 12, the control means 11, and the public mode frame disassembly / assembly unit 14 in the configuration of FIG. That is, the termination of each protocol is performed by the self-employed mode frame disassembling / assembling unit 12, the public mode frame disassembling / assembling unit 14 and the control means 11, and the exchange of the extracted information is performed inside the control means 11.

(3) Location Registration Means When the presence of the child device 2d under the connected parent device 4 is confirmed, the location registration is performed on the PHS communication network. This position registration operation is started by sending a special number from the base unit 4 side to the public / private conversion device 1 or by inputting a predetermined control signal. A telephone number that does not exist in the communication network is used as this special number. In the configuration of FIG. 1, when a transmission signal is received from the base unit 4 side, the control signal 16 is extracted in the self-employed mode frame disassembly / assembly unit 12 and sent to the control means 11. The control means 11 analyzes the control signal 16 and activates the position registration operation if the control signal 16 is judged to be the special number.

At this time, the control means 11 analyzes the extension number of the slave unit 2d which is the transmission source (by the correspondence table with the special number or the analysis of the data extracted from the special number). Then, this extension number is converted into a public mode telephone number by the above-mentioned slave unit number management means. Further, the control means 11 activates an authentication process for determining whether or not this telephone number is valid (checks with a telephone number registered in advance or makes a determination based on the data format, etc.) and If so, the location is registered in the PHS communication network. That is, the control means 11 sends the telephone number and the data necessary for registration to the public mode frame disassembly / assembly section 14 as the control signal 16, and the public mode frame disassembly / assembly section 14 converts this into a predetermined protocol. Send out.

Although the position registration operation has been described here for the case of transmitting a special number, for example, the position registration control signal 18 is separately given from the external control device 19 to the control means 11 to perform the position registration. It is also possible to do so. This external control device 19 uses information necessary for location registration,
For example, it is a device having a data processing function of giving data such as an extension number in the self-employed mode of the child device 2d to the control means 11. The external control device 1 sends and receives such data.
9 and control means 11 for connecting communication means (eg RS2
32C, serial communication means such as RS422).

(4) Call control means When an incoming signal is received from the PHS line 5, the public mode telephone number is converted into an extension number in the self-employed mode, and the base unit 4 is controlled by this extension number, for example, dial-in or subaddress. The incoming call is made only to the corresponding child device 2d via the. Here, the sub-address is a supplementary number in addition to a general telephone number, and normally, when there are a plurality of terminals (slave units) under the same telephone number (slave unit), the sub-address is specified. Used to specify the terminal of.

[0025]

As described above, according to the present invention, with respect to a slave unit existing at an arbitrary position, even in an area where there is no base station in public mode, if it is in the area of the master unit in self-employed mode, It became possible to give an incoming call from the communication network of the mode.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a public / private protocol conversion device according to the present invention.

FIG. 2 is a system block diagram showing a state in which a public / private protocol conversion device according to the present invention is installed between a PHS line and a master unit in a private mode.

FIG. 3 is a block diagram showing the concept of slave unit number management means.

FIG. 4 is a block diagram showing the concept of protocol conversion means.

FIG. 5 is a system block diagram showing a relationship between a base station and a child device of a conventional PHS line, and a parent device and a child device.

[Explanation of symbols]

 1 Public / self-employed converter 2a, 2b, 2c, 2d Remote unit 3a, 3b Base station 4 Master unit 5 PHS line 6 General line 11 Control means 12 Self-employed mode frame disassembly / assembly unit 13 Speech signal exchange unit 14 Public mode frame disassembly / Assembly department 15 Call signal 16 Control signal 17 Channel control signal 18 Position registration control signal 19 External control device

Claims (2)

[Claims] 1. A self-employed mode frame disassembly / assembly unit for connecting to a self-employed mode master unit to disassemble the self-employed mode frame into a call signal and a control signal, or assembling from the call signal and the control signal, and a PHS line. A public mode frame disassembly / assembly unit for connecting and disassembling a public mode frame into a call signal and a control signal or assembling from the call signal and a control signal, and the self-employed mode frame disassembly / assembly unit and a public mode frame disassembly / A call signal exchanging unit for exchanging a call signal with the assembling unit and a control signal between the self mode mode frame disassembling / assembling unit and the public mode frame disassembling / assembling unit for controlling the call signal exchanging unit. A public / self-employed protocol conversion device comprising a control unit for transmitting and receiving data. 2. A cordless handset number management means for mutually converting a public mode telephone number and a private mode extension number, and a PHS.
Protocol exchanging means for terminating the line protocol and the line protocol on the master side and mutually exchanging information extracted at each terminal, and sending a special number or inputting a predetermined control signal from the master side Receive PHS
Call control for receiving the incoming signal from the location registration means for performing location registration for the line and the PHS line and for giving an incoming call to the corresponding handset via the base station using the handset number management means and protocol conversion means. A public / self-employed protocol conversion device comprising means.