JP4194209B2 - Semi-public system for mobile communication - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a semi-public system for mobile communication that connects a mobile communication network and a private communication network.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a technique using PBX (private branch exchange) is known as a technique for connecting a public communication network such as a general public communication line or an ISDN (Integrated Service Digital Network) line and a private communication network. By using PBX, voice communication, data communication, and the like can be performed between a communication terminal (for example, an extension telephone or a personal computer) connected to a local communication network and a communication terminal connected to a public communication network. it can.
[0003]
The applicant of the present application has developed a technology for directly connecting a local communication network and a PHS (Personal Handyphone System) network and has already filed an application (see Japanese Patent Application No. 10-194045).
[0004]
FIG. 13 is a conceptual diagram of a communication system employing the technology according to the above application. As shown in FIG. 13, the PBX 1311 of the local communication network 1310 and the public communication network 1320 are connected by a general public line 1321 and an ISDN line 1322. The PBX 1311 and the PHS network 1330 are connected via a communication line 1331 and a semi-public adapter 1340. The public communication network 1320 and the PHS network 1330 are connected by a communication line (not shown).
[0005]
The PBX 1311 is connected to the wired communication terminals 1312, 1312,... Of the local communication network, and is also connected to the mobile terminal (PS; Personal Station) 1314, 1314,. Connected to The public communication network 1320 is directly connected to the wired communication terminal 1323 and the like. On the other hand, the PHS network 1330 is connected to a mobile terminal 1332 via a public base station (CS) 1331.
[0006]
According to this technique, since the semi-public adapter 1340 is provided, communication connection between the PBX 1311 and the PHS network 1330 can be performed directly without using the public communication network 1320. Accordingly, since the PHS operator does not need to pay a connection fee to the operator of the public communication network 1320, the operation cost of the PHS network 1330 can be reduced. As a result, the PHS operator can reduce the communication fee charged to the local network operator, and the local network operator can reduce the communication cost.
[0007]
[Problems to be solved by the invention]
However, in the technology according to the above application, the local communication network 1310 and the PHS network 1330 can be directly connected only in the case of communication between the mobile terminal 1314 of the local communication network 1310 and the mobile terminal 1332 of the PHS network 1330. It is. That is, when the wired communication terminal 1312 of the local communication network 1310 is used, the local communication network 1310 and the PHS network 1330 cannot be directly connected. Accordingly, in this case, since the public communication network 1320 must be interposed, the local communication network operator needs to conclude a use contract for the public communication network 1320 and bear the use contract fee.
[0008]
Furthermore, in the system of FIG. 13, when the wired communication terminal 1312 performs high-speed data communication (for example, 64 Kbps) with the public communication network 1320 or the PHS network 1330, it is necessary to use the ISDN line 1322. Therefore, in order to perform high-speed data communication using the wired communication terminal 1312, the local network operator has to make a use contract for the ISDN line 1322 with the operator of the public communication network 1320. However, at present, high-speed data communication such as 32 Kbps and 64 Kbps is also possible in the PHS network 1330. Therefore, if the local communication network 1310 and the PHS network 1330 can be directly connected even when the wired communication terminal 1312 is used, the local communication network operator does not need to make a contract for using the ISDN line 1322. In the current general fee system, when high-speed data communication is frequently performed, communication costs can be reduced by using the ISDN line 1322 rather than using the PHS network 1330. However, when the use of high-speed data communication is less than a predetermined frequency, it is possible to reduce the communication cost by performing all high-speed data communication via the PHS network 1330 without making a contract for using the ISDN line 1322. it can.
[0009]
In addition, if the local communication network 1310 and the PHS network 1330 can be directly connected when the wired communication terminal 1312 is used, the local communication network 1310 and the public communication network 1320 can also be connected via the PHS network 1330. it can. In this case, the local network operator does not need to make any contract with the operator of the public communication network 1320. In the case where the connection frequency between the local communication network 1310 and the PHS network 1330 is very high but the connection between the local communication network 1310 and the public communication network 1320 is small, a contract with the operator of the public communication network 1320 is made at all. In addition, the communication cost is lower if all external communication is performed via the PHS network 1330.
[0010]
For the above reasons, a technique for enabling direct connection between the local communication network and the PHS network even when a wired communication terminal in the local communication network is used has been desired.
[0011]
[Means for Solving the Problems]
The present invention relates to a semi-public system for mobile communication that connects a mobile communication network and a private communication network.
[0012]
  The present invention is a semi-public system for mobile communication that connects a mobile communication network and a private communication network, and is actually accommodated in a mobile communication telephone number assigned to a virtual mobile communication terminal and the private communication network. A virtual terminal number converting means for converting the private communication telephone number assigned to the non-mobile communication terminal being operated, and information indicating that the virtual mobile communication terminal is within a communicable range of the private communication network Virtual terminal location registration means for transmitting to the mobile communication network, and the virtual terminal number conversion means,MultipleFor each of the number groups consisting of the local communication telephone numbers, all the local communication telephone numbers in the number group are used for outgoing calls to the mobile communication network and are representative numbers in the number group. It is characterized by having a conversion table in which one of the local communication telephone numbers is assigned to each of the mobile communication telephone numbers used for receiving an incoming call from the mobile communication network.
[0013]
  The mobile communication semi-public system connects a mobile communication network and a private communication network, and includes a mobile communication telephone number assigned to a virtual mobile communication terminal and a non-accommodation actually accommodated in the private communication network. Virtual terminal number conversion means for converting the telephone number for private communication assigned to the mobile communication terminal, and information indicating that the virtual mobile communication terminal is within a communicable range of the private communication network Virtual terminal location registration means for transmitting to the mobile communication network, when the virtual terminal number conversion means makes a call to the mobile communication network, the local communication telephone number assigned to the mobile communication telephone number When receiving an incoming call from the mobile communication network, all of the mobile communication telephone numbers assigned for incoming calls are converted.Convert to a representative numberAnd a conversion table.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the size, shape, and arrangement relationship of each component are shown only schematically to the extent that the present invention can be understood, and the numerical conditions described below are merely examples. .
[0015]
First embodiment
A first embodiment of the present invention will be described with reference to FIGS.
[0016]
FIG. 1 is a conceptual diagram showing an overall configuration of a system according to the first embodiment. As shown in FIG. 1, the PBX 111 and the PHS network 120 of the local communication network 110 are connected via a semi-public adapter 130. The PHS network 120 and the public communication network 140 are connected by a communication line (not shown).
[0017]
The PBX 111 is connected by wire to telephones 151, 152,..., 156 and data terminals 161, 162, and 163 in the local communication network. Further, the PBX 111 is wirelessly connected to the mobile terminals 181, 182, and 183 via the local base stations 171, 172, and 173.
[0018]
The PHS network 120 is wirelessly connected to the mobile terminal 122 via the public base station 121.
[0019]
The public communication network 140 is wired to communication terminals (telephones, data terminals, etc.) 141, 142, 143, and the like.
[0020]
In the system according to this embodiment, the local communication network 110 and the public communication network 140 may be directly connected or may not be connected. That is, in the local area communication network 110 according to this embodiment, whether or not to connect a public communication line or an ISDN line is arbitrary.
[0021]
FIG. 2 is an internal configuration diagram of the semi-public adapter according to this embodiment.
[0022]
As shown in FIG. 2, the semi-public adapter 140 includes a communication path control unit 201, three I line termination units 202a, 202b, 202c, three I ′ line termination units 203a, 203b, 203c, call control, and the like. Unit 204 and storage unit 211. The call control unit 204 includes a number conversion function unit 205, a location registration function unit 206, an authentication function unit 207, a virtual terminal number conversion function unit 208, a virtual terminal location registration function unit 209, and a virtual terminal authentication function unit 210. However, it is constructed by software, for example.
[0023]
The speech path control unit 201 sets a speech path between the I line termination units 202a to 202c and the I ′ line termination units 203 to 203c.
[0024]
The I line termination units 202a, 202b, and 202c are connected to the PHS network 120, respectively.
[0025]
The I ′ line termination units 203a, 203b, and 203c are connected to the PBX 111, respectively.
[0026]
The call control unit 204 mediates transmission processing, release processing, and the like performed between the local communication network 110 and the PHS network 120.
[0027]
When the mobile terminals 181 to 183 of the local area communication network 110 communicate with the outside via the PHS network 120, the number conversion function unit 205 is used for PHS telephone numbers (hereinafter referred to as “PS numbers”) and local area communication. Conversion to a telephone number (hereinafter referred to as "extension number") is performed. That is, when the external mobile terminal 122 transmits to the mobile terminals 181 to 183 via the PHS network 120, the number conversion function unit 205 converts the called party number transmitted from the PHS network 120 from the PS number to the extension number. To do. Conversely, when the mobile terminals 181 to 183 make a call to the external mobile terminal 122 via the PHS network 120, the number conversion function unit 205 changes the caller number transmitted from the local communication network 110 from the extension number to the PS number. Convert to
[0028]
The location registration function unit 206 can communicate with the mobile terminals 181 to 183 when the mobile terminals 181 to 183 are within the communicable range of the local communication network 110, that is, within the communicable range of the local base stations 171 to 173. Information indicating this is transmitted to the PHS network 120.
[0029]
The authentication function unit 207 executes a process for authenticating the validity of the mobile terminals 181 to 183 in response to a request from the PHS network 120. In this process, authentication data is transmitted from the authentication function unit 207 to the mobile terminals 181 to 183. The mobile terminals 181 to 183 perform a predetermined calculation using the authentication data, and transmit the calculation result to the authentication function unit 207. The authentication function unit 207 compares the calculation results received from the mobile terminals 181 to 183 with the calculation results stored in advance. The authentication function unit 207 determines that the mobile terminals 181 to 183 are valid when these values match, and determines that the mobile terminals 181 to 183 are illegal when they do not match. The determination result is sent from the authentication function unit 207 to the PHS network 120.
[0030]
The virtual terminal number conversion function unit 208 is a virtual terminal assigned to each wired communication terminal when the wired communication terminals 151 to 156 and 161 to 163 of the local communication network 110 communicate with the outside via the PHS network 120. Conversion is performed between the PS numbers of the communication terminals and the extension numbers of these wired communication terminals. That is, when the external terminals 122 and 141 to 143 transmit to the wired communication terminals 151 to 156 and 161 to 163 via the PHS network 120, the virtual terminal number conversion function unit 208 receives the PS transmitted from the PHS network 120. Convert numbers to extension numbers. Conversely, when the wired communication terminals 151 to 156 and 161 to 163 transmit to the external terminals 122 and 141 to 143 via the PHS network 120, the virtual terminal number conversion function unit 208 is transmitted from the local area communication network 110. The extension number is converted into a PS number.
[0031]
The virtual terminal location registration function unit 209 transmits to the PHS network 120 information indicating that the virtual mobile terminal is within the communicable area of the local area communication network 110. Since the virtual communication terminals are actually the wired communication terminals 151 to 156 and 161 to 163, they are always within the communicable area of the local area communication network 110. Therefore, the virtual location registration function unit 209 always sends information indicating that communication is possible to the PHS network 120. By providing the virtual position registration function unit 209, the PHS network 120 can perform position recognition control for the semi-public adapter 130 (that is, position recognition control for a virtual communication terminal) in exactly the same sequence as the position recognition control for the public base station 121. )It can be performed.
[0032]
In response to a request from the PHS network 120, the virtual terminal authentication function unit 210 executes a process for authenticating the validity of the virtual mobile terminal. Actually, when there is an authentication request from the PHS network 120, the virtual terminal authentication function unit 210 does not issue an authentication request to the wired communication terminals 151 to 156 and 161 to 163, but the wired communication terminals 151 to 156, The authentication calculation is performed on behalf of 161 to 163, and the calculation result is returned. This is because the virtual communication terminals are actually the wired communication terminals 151 to 156 and 161 to 163, and therefore it is difficult to consider unauthorized use due to alteration of the terminals. By providing the virtual terminal authentication function unit 210, the PHS network 120 can control the quasi-public adapter 130 in exactly the same sequence as the control for the public base station 121.
[0033]
The storage unit 211 stores programs, data, and the like of the function units 205 to 210. The conversion table used by the number conversion function unit 205, the authentication data and calculation results used by the authentication function unit 207, the conversion table used by the virtual terminal number conversion function unit 208, and the like are stored in the storage unit 211.
[0034]
FIG. 3 is a conceptual diagram showing a conversion table used by the virtual terminal number conversion function unit 208.
[0035]
In the conversion table of FIG. 3, the extension numbers of the wired communication terminals 151 to 156 and 161 to 163 and the mobile terminals 181 to 183 are stored in the extension number column. In FIG. 3, in order to simplify the description, reference numerals 151 to 156, 161 to 163, and 181 to 183 assigned to these terminals are used as extension numbers of the respective terminals as they are. In the conversion table of FIG. 3, PS numbers corresponding to these extension numbers are stored in the PS number column. As can be seen from FIG. 3, in this embodiment, a different PS number is assigned to each extension number.
[0036]
Next, the operation of the system shown in FIGS. 1 to 3 will be described with reference to FIGS. However, the sequence shown in FIG. 4 and FIG. 5 is an example when the wired communication terminal uses an ISDN-compatible telephone. When a telephone other than an ISDN-compatible telephone is used, the sequence between the PBX and the telephone is in accordance with the function of the telephone.
[0037]
In FIG. 4, a call is transmitted from any of the wired communication terminals 151 to 156 and 161 to 163 (hereinafter referred to as the telephone set 151) to any of the communication terminals 122 and 141 to 143 on the PHS network 120 side. It is operation | movement explanatory drawing in the case.
[0038]
First, the operator of the telephone 151 performs a dialing operation to an external terminal. Thereby, the telephone set 151 transmits setup information to the PBX 111. This setup information includes a calling number, a calling subaddress, a called number, and a called subaddress.
[0039]
The calling number is the telephone number of the communication terminal that makes a call, that is, the telephone 151. Whether the telephone 151 stores the calling party number in the setup information is arbitrary.
[0040]
The calling subaddress is a subaddress of the communication terminal that performs outgoing call, that is, the telephone set 151. This subaddress is used to distinguish these terminals or functions when a plurality of terminals or functions share one telephone number. Whether the telephone 151 stores the calling subaddress in the setup information is arbitrary.
[0041]
The called number is the telephone number of the communication terminal that is the connection destination. In the example of FIG. 4, since the outside line is transmitted, “0” is added to the beginning of the called number.
[0042]
The destination subaddress is the subaddress of the communication terminal that is the connection destination. Whether or not the telephone 151 stores the destination subaddress in the setup information is arbitrary.
[0043]
When the PBX 111 receives the setup information, the PBX 111 returns a response signal to the telephone set 151. The PBX 111 stores the extension number of the telephone 151 in the calling subaddress column and removes “0” at the head of the called number column. Then, this setup information is transferred to the semi-public adapter 130.
[0044]
When the semi-public adapter 130 receives the setup information, it returns a response signal to the PBX 111. The received setup information is sent to the virtual terminal number conversion function unit 208. The virtual terminal number conversion function unit 208 reads the extension number from the setup information, and further reads the PS number corresponding to the extension number from the conversion table (see FIG. 3) stored in the storage unit 211. Then, the virtual terminal number conversion function unit 208 stores this PS number in the calling number column of the setup information. The semi-public adapter 130 transmits this setup information to the PHS network 120.
[0045]
When receiving the setup information, the PHS network 120 returns a response signal to the semi-public adapter 130. Further, the PHS network 120 transmits an authentication request to the semi-public adapter 130.
[0046]
The semi-public adapter 130 sends the received authentication request to the virtual terminal authentication function unit 210. The virtual terminal authentication function unit 210 returns the determination result about the validity of the mobile terminal to the PHS network 120 as an authentication response. As described above, the virtual terminal authentication function unit 210 may not perform an actual authentication calculation.
[0047]
When the PHS network 120 receives the authentication response, the PHS network 120 performs a calling process for the communication terminal on the PHS network 120 side, and then transmits a connection notification to the semi-public adapter 130. The semi-public adapter 130 transfers this connection notification to the PBX 111. Further, the PBX 111 transfers this connection notification to the telephone set 151. Thereby, the connection between the telephone set 151 and the PHS network 120 is established.
[0048]
FIG. 5 is an operation explanatory diagram when a call is sent from the PHS network 120 to the wired telephone set 151.
[0049]
First, the PHS network 120 transmits setup information to the semi-public adapter 130. This setup information includes a calling number, a calling subaddress, a called number, and a called subaddress as in the case of FIG. In this setup information, the caller's telephone number is stored in the calling number column, and the connected PS number is stored in the called number column. Whether or not the source subaddress and the destination subaddress are stored in the setup information is arbitrary.
[0050]
The semi-public adapter 130 sends the received setup information to the virtual terminal number conversion function unit 208. The virtual terminal number conversion function unit 208 reads the PS number from the setup information, and further reads the extension number corresponding to the PS number from the conversion table (see FIG. 3) stored in the storage unit 211. Then, the virtual terminal number conversion function unit 208 stores the extension number in the destination subaddress column of the setup information. The semi-public adapter 130 transmits this setup information to the PBX 111.
[0051]
When the PBX 111 receives the setup information, the PBX 111 returns a response signal to the semi-public adapter 130. Then, the PBX 111 reads the extension number from the called subaddress, and transfers the setup information to the telephone set 151 corresponding to the extension number.
[0052]
When the telephone set 151 receives this setup information, it returns a response signal to the PBX 111.
[0053]
When the semi-public adapter 130 receives the response signal from the PBX 111, the semi-public adapter 130 transmits the response signal to the PHS network 120. When receiving the response signal, the PHS network 120 transmits an authentication request to the semi-public adapter 130. The semi-public adapter 130 sends the received authentication request to the virtual terminal authentication function unit 210. The virtual terminal authentication function unit 210 returns the determination result that the mobile terminal is valid to the PHS network 120 as an authentication response without performing the authentication work.
[0054]
Thereafter, the telephone set 151 transmits a connection notification to the PBX 111. The PBX 111 transfers this connection notification to the semi-public adapter 130. Further, the semi-public adapter 130 transfers this connection notification to the PHS network 120. Thereby, the connection between the PHS network 120 and the telephone set 151 is established.
[0055]
Note that the communication procedure between the mobile terminals 181 to 183 in the local communication network 110 and the PHS network 120 is the same as that in the examples of FIGS. In this case, the number conversion function unit 205 and the authentication function unit 207 perform number conversion and authentication.
[0056]
As described above, according to this embodiment, the local area communication network 110 and the PHS network 120 are used even when the wired communication terminals 151 to 156 and 161 to 163 perform communication by using the PS number of the virtual communication terminal. Can be connected directly. Therefore, communication with the PHS network 120 and the public communication network 140 can be performed without using a general public line or an ISDN line.
[0057]
Second embodiment
Next, a second embodiment of the present invention will be described with reference to FIG.
[0058]
The overall configuration of the system according to this embodiment and the internal configuration of the semi-public adapter are the same as those in the case of the first embodiment described above (see FIGS. 1 and 2), and thus description thereof is omitted.
[0059]
This embodiment is different from the first embodiment in the conversion table used by the virtual terminal number conversion function unit 208.
[0060]
FIG. 6 is a conceptual diagram showing the contents of the conversion table used by the virtual terminal number conversion function unit 208 of this embodiment. In FIG. 6, (A) is a conversion table for converting extension numbers into PS numbers (hereinafter referred to as “transmission conversion table”), and (B) is a conversion for converting PS numbers into extension numbers. Table (hereinafter referred to as “incoming conversion table”). As shown in FIG. 6, in this embodiment, the number of PS numbers does not match the number of extension numbers.
[0061]
In the outgoing call conversion table of FIG. 6A, the extension number column stores the extension numbers of the wired communication terminals 151 to 156 and 161 to 163 and the mobile terminals 181 to 183 of FIG. In the outgoing conversion table, the PS number corresponding to each extension number is stored in the PS number column. In the example of FIG. 6A, the same PS number is assigned to the wired communication terminals 151 to 153, the same PS number is assigned to the wired communication terminals 154 to 156, and the wired communication terminals 161 to 163 are assigned. The same PS number is assigned to each of the mobile communication terminals 181 to 183.
[0062]
In the incoming call conversion table of FIG. 6B, the PS number of each virtual communication terminal is stored in the PS number column. The PS number used is the same as the outgoing conversion table. In the incoming conversion table, only the extension numbers of the wired communication terminals 151, 154, 161 and the mobile communication terminal 181 are stored in the extension number column. That is, in the example of FIG. 6B, the other communication terminals 152, 153, 155, 156, 162, and 163 cannot make incoming calls.
[0063]
Since the operation of the system according to this embodiment is almost the same as that of the first embodiment, description thereof is omitted.
[0064]
As described above, according to this embodiment, the local area communication network 110 and the PHS network 120 are used even when the wired communication terminals 151 to 156 and 161 to 163 communicate by using the PS number of the virtual communication terminal. Can be connected directly. Therefore, communication with the PHS network 120 and the public communication network 140 can be performed without using a general public line or an ISDN line.
[0065]
Furthermore, in the system of this embodiment, the number of virtual mobile communication terminals (and hence the number of PS numbers) can be made smaller than the number of wired communication terminals connected to the local area communication network 110. In a normal fee structure, the operator of the local communication network 110 needs to pay a basic fee corresponding to the contracted number of mobile communication terminals to the operator of the PHS network 120. Therefore, the operator of the local area network 110 can reduce the communication cost by reducing the number of virtual mobile communication terminals with which the contract is made.
[0066]
Moreover, since the service provider of the PHS network 120 can provide a service with a small number of PS numbers, it is possible to suppress a shortage of PS numbers due to an increase in users.
[0067]
Third embodiment
Next, a third embodiment of the present invention will be described with reference to FIG.
[0068]
The overall configuration of the system according to this embodiment and the internal configuration of the semi-public adapter are the same as those in the case of the first embodiment described above (see FIGS. 1 and 2), and thus description thereof is omitted.
[0069]
In this embodiment, the operation of the virtual terminal number conversion function unit 208 and the configuration of the conversion table are different from those of the above-described embodiments.
[0070]
FIG. 7 is a conceptual diagram showing the contents of the conversion table used by the virtual number conversion function unit of this embodiment. 7, (A) is a conversion table (translation table for outgoing call) for converting an extension number into a PS number, and (B) is a conversion table (conversion table for incoming call) when converting a PS number to an extension number. ). As shown in FIG. 7, in this embodiment, the number of PS numbers does not match the number of extension numbers.
[0071]
In the conversion table for outgoing call in FIG. 7A, the extension numbers of the wired communication terminals 151 to 156 and 161 to 163 and the mobile terminals 181 to 183 in FIG. Also, in this outgoing call conversion table, the PS number of each virtual communication terminal is stored in the PS number column. As will be described later, in this embodiment, a PS number that is not in use is assigned to each extension number as needed, but a PS number that is not in use is assigned whenever a call is made.
[0072]
In the incoming call conversion table of FIG. 7B, the PS number of each virtual communication terminal is stored in the PS number column. The PS number used is the same as the outgoing conversion table. That is, the incoming call conversion table in FIG. 7B uses the same virtual communication terminal as the outgoing call conversion table in FIG. In the incoming call conversion table, the representative telephone number set in the PBX 111 is stored in the representative number column. The PBX 111 is configured to send a guidance (for example, voice guidance) for transmitting an extension number to the caller when a communication line is connected to the representative number. When the PBX 111 is connected to a general public line or ISDN line, the representative number assigned by the public communication network 140 may be stored as it is in the incoming conversion table as a representative number. On the other hand, even when the PBX 111 is connected to a general public line or ISDN line, an appropriate representative number may be set in the PBX 111 and stored in the incoming conversion table.
[0073]
Next, the operation of the system according to this embodiment will be described.
[0074]
When making a call from any one of the wired communication terminals 151 to 156 and 161 to 163 (hereinafter referred to as the telephone set 151) to any of the communication terminals 122 and 141 to 143 on the PHS network 120 side, The process is performed according to the following procedure.
[0075]
First, the operator of the telephone 151 performs a dialing operation to an external terminal. In this dial operation, “0” which is a number indicating an outside line transmission and a telephone number of a connection destination are input. The telephone 151 transmits setup information similar to that in the first embodiment to the PBX 111.
[0076]
When the PBX 111 receives the setup information, the PBX 111 returns a response signal to the telephone set 151. The PBX 111 stores the extension number of the telephone 151 in the calling subaddress column and removes “0” at the head of the called number column. Then, this setup information is transferred to the semi-public adapter 130.
[0077]
When the semi-public adapter 130 receives the setup information, it returns a response signal to the PBX 111. The received setup information is sent to the virtual terminal number conversion function unit 208. The virtual terminal number conversion function unit 208 reads the extension number from the setup information, and further reads the PS number that is not in use from the conversion table (see FIG. 7A) stored in the storage unit 211. Then, the virtual terminal number conversion function unit 208 stores this PS number in the calling number column of the setup information. The semi-public adapter 130 transmits this setup information to the PHS network 120.
[0078]
When receiving the setup information, the PHS network 120 returns a response signal and transmits an authentication request to the semi-public adapter 130.
[0079]
The semi-public adapter 130 returns an authentication response to the PHS network 120 in the same manner as in the first embodiment.
[0080]
Thereafter, similarly to the first embodiment, connection notifications are sequentially transferred from the PHS network 120 to the telephone set 151, and the connection between the telephone set 151 and the PHS network 120 is established.
[0081]
On the other hand, when an incoming call is made from the PHS network 120 to any of the wired communication terminals 151 to 156 and 161 to 163, processing is performed according to the following procedure.
[0082]
First, the PHS network 120 transmits setup information similar to that in the first embodiment to the semi-public adapter 130.
[0083]
The semi-public adapter 130 sends the received setup information to the virtual terminal number conversion function unit 208. The virtual terminal number conversion function unit 208 reads the PS number from the setup information, and further reads the representative number corresponding to the PS number from the conversion table (see FIG. 7B) stored in the storage unit 211. In the example of FIG. 7B, since one representative number corresponds to all PS numbers, this representative number is always read. Then, the virtual terminal number conversion function unit 208 stores the representative number in the destination subaddress column of the setup information. The semi-public adapter 130 transmits this setup information to the PBX 111.
[0084]
When the PBX 111 receives the setup information, the PBX 111 returns a response signal to the semi-public adapter 130. Then, the PBX 111 reads the representative number from the destination subaddress. When the PBX 111 recognizes that this number is the representative number, the PBX 111 sends guidance such as voice to the PHS network 120 via the semi-public adapter 130. This guidance requests the caller to send the extension number of the callee. When the caller operates the communication terminal and returns the extension number, the PBX 111 performs processing for connecting the communication terminal (for example, the telephone 151) corresponding to the received extension number to the PHS network 120. Since this process is the same as the process performed by the conventional PBX for an incoming call from a general public line or ISDN line, a detailed description is omitted.
[0085]
As described above, according to this embodiment, the local area communication network 110 and the PHS network 120 are used even when the wired communication terminals 151 to 156 and 161 to 163 communicate by using the PS number of the virtual communication terminal. Can be connected directly.
[0086]
Furthermore, in the system of this embodiment, the number of virtual mobile communication terminals (and hence the number of PS numbers) can be made smaller than the number of wired communication terminals connected to the local area communication network 110, so that the communication cost can be reduced. And PS number shortage can be suppressed.
[0087]
In addition, since the PS number used by each wired communication terminal is not specified in the system according to this embodiment, there is an advantage that the communication is not easily busy.
[0088]
Fourth embodiment
Next, a fourth embodiment of the present invention will be described with reference to FIG.
[0089]
The overall configuration of the system according to this embodiment and the internal configuration of the semi-public adapter are the same as those in the case of the first embodiment described above (see FIGS. 1 and 2), and thus description thereof is omitted.
[0090]
This embodiment is different from the first embodiment in the conversion table used by the virtual terminal number conversion function unit 208.
[0091]
FIG. 8 is a conceptual diagram showing the contents of the conversion table used by the virtual terminal number conversion function unit of this embodiment. 8, (A) is a conversion table (translation table for outgoing call) for converting an extension number into a PS number, and (B) is a conversion table (conversion table for incoming call) when converting a PS number into an extension number. ). As shown in FIGS. 8A and 8B, in this embodiment, different PS numbers are used for outgoing and incoming calls.
[0092]
In the outgoing call conversion table of FIG. 8A, the extension number column stores the extension numbers of the wired communication terminals 151 to 156 and 161 to 163 and the mobile terminals 181 to 183 of FIG. In the outgoing conversion table, the PS number of each virtual communication terminal is stored in the PS number column. As in the third embodiment described above, PS numbers are not fixedly assigned to each extension number, but PS numbers that are not being used are assigned at any time for each outgoing call process.
[0093]
In the incoming call conversion table of FIG. 8B, the extension number column stores the extension numbers of the wired communication terminals 151-156, 161-163 and the mobile terminals 181-183. Also, in this incoming call conversion table, the PS numbers assigned to these extension numbers are stored in the PS number column. As can be seen from FIG. 8B, in this embodiment, a different PS number is assigned to each extension number. As described above, numbers that are not used as outgoing PS numbers are assigned as incoming PS numbers.
[0094]
Each of the communication terminals 151 to 156, 161 to 163, and 181 to 183 can transfer incoming calls from the PHS network 120 to other communication terminals in the local communication network 110. When the incoming call is transferred, the virtual mobile communication terminal corresponding to the communication terminal that has received the call first is in a busy state until the communication between the transfer destination communication terminal and the PHS network 120 is completed. Therefore, when the same PS number is used for outgoing and incoming calls, the communication terminal that first receives a call may make a call to the PHS network 120 until communication between the transfer destination communication terminal and the PHS network 120 is completed. Can not. On the other hand, since the system of this embodiment uses different PS numbers for outgoing and incoming calls, even if the transfer destination communication terminal and the PHS network 120 are still communicating, outgoing calls to the PHS network 120 are made. It can be performed.
[0095]
In the system according to this embodiment, the procedure of the outgoing call process is substantially the same as in the case of the third embodiment described above. Further, the procedure of the incoming call processing is almost the same as that in the first embodiment described above.
[0096]
As described above, according to this embodiment, the local communication network 110 and the PHS network 120 can be directly connected, and the communication terminal that forwards the incoming call can be transmitted.
[0097]
Fifth embodiment
Next, a fifth embodiment of the present invention will be described with reference to FIGS. However, the sequence shown in FIG. 10 and FIG. 11 is an example when the wired communication terminal uses an ISDN-compatible telephone. When a telephone other than an ISDN-compatible telephone is used, the sequence between the PBX and the telephone is in accordance with the function of the telephone.
[0098]
FIG. 9 is a conceptual diagram showing the overall configuration of the system according to this embodiment. In FIG. 9, the components given the same reference numerals as in FIG. 1 are the same as those in FIG.
[0099]
The communication system according to this embodiment includes a service control point (SCP) 910. The service control apparatus 910 includes a virtual terminal authentication function unit 911.
[0100]
On the other hand, the semi-public adapter 920 according to the present invention is different from the semi-public adapter 130 of FIG. 1 in that it does not include an authentication function unit and a virtual terminal authentication function unit.
[0101]
That is, in this embodiment, the service control apparatus 910 executes processing for authenticating the validity of the communication terminals 151 to 156, 161 to 163, and 181 to 183 provided in the local area communication network 110.
[0102]
The operation of the system according to this embodiment will be described with reference to FIGS.
[0103]
A procedure for making a call from any of the wired communication terminals 151 to 156 and 161 to 163 (hereinafter referred to as the telephone set 151) to any of the communication terminals 122 and 141 to 143 on the PHS network 120 side is illustrated in FIG. 10 will be used for explanation.
[0104]
First, the operator of the telephone 151 performs a dialing operation to an external terminal. In this dial operation, “0” which is a number indicating an outside line transmission and a telephone number of a connection destination are input. The telephone 151 transmits setup information similar to that in the first embodiment to the PBX 111.
[0105]
When the PBX 111 receives the setup information, the PBX 111 returns a response signal to the telephone set 151. The PBX 111 stores the extension number of the telephone 151 in the calling subaddress column and removes “0” at the head of the called number column. Then, this setup information is transferred to the semi-public adapter 920.
[0106]
When the semi-public adapter 920 receives the setup information, it returns a response signal to the PBX 111. The received setup information is sent to the virtual terminal number conversion function unit 208. The virtual terminal number conversion function unit 208 reads the extension number from the setup information, and further reads the PS number corresponding to the extension number from the conversion table (see FIG. 3) stored in the storage unit 211. Then, the virtual terminal number conversion function unit 208 stores this PS number in the calling number column of the setup information. The semi-public adapter 920 transmits this setup information to the PHS network 120.
[0107]
When receiving the setup information, the PHS network 120 returns a response signal and transmits an authentication request to the semi-public adapter 920.
[0108]
When the semi-public adapter 920 receives the authentication request from the PHS network 120, the semi-public adapter 920 transmits an authentication calculation request to the service control device 910. In this authentication calculation request, a calling number and an authentication random number are stored. The semi-public adapter 920 stores the PS number assigned to the telephone set 151 as the calling number in this authentication calculation request, and stores the numerical value designated by the PHS network 120 as the authentication random number. This authentication calculation request is received by the service control apparatus 910 via the PHS network 120.
[0109]
The service control apparatus 910 sends the received authentication calculation request to the virtual other terminal authentication function unit 911. The virtual terminal authentication function unit 911 reads the calling number and the authentication random number from the authentication calculation request, and performs the authentication calculation using the calculation formula corresponding to the calling number. The calculation result is stored in the authentication calculation response. The authentication calculation response also stores a PS number corresponding to authentication as a calling number. The authentication calculation response is sent to the semi-public adapter 920 via the PHS network 120.
[0110]
The semi-public adapter 920 determines the validity of the telephone set 151 using the received authentication calculation response. The semi-public adapter 920 returns the determination result to the PHS network 120 as an authentication response.
[0111]
As in the first embodiment, since the possibility that the wired terminal is illegal is very low, such an authentication operation does not necessarily have to be performed. However, by performing the authentication operation, the PHS network 120 can control the semi-public adapter 920 in exactly the same sequence as the control for the public base station 121.
[0112]
Thereafter, similarly to the first embodiment, connection notifications are sequentially transferred from the PHS network 120 to the telephone set 151, and the connection between the telephone set 151 and the PHS network 120 is established.
[0113]
Next, a procedure for receiving an incoming call from the PHS network 120 to any of the wired communication terminals 151 to 156 and 161 to 163 will be described with reference to FIG.
[0114]
First, the PHS network 120 transmits setup information similar to that in the first embodiment to the semi-public adapter 920.
[0115]
The semi-public adapter 920 sends the received setup information to the virtual terminal number conversion function unit 208. The virtual terminal number conversion function unit 208 reads the PS number from the setup information, and further reads the extension number corresponding to the PS number from the conversion table (see FIG. 3) stored in the storage unit 211. Then, the virtual terminal number conversion function unit 208 stores the extension number in the destination subaddress column of the setup information. The semi-public adapter 920 transmits this setup information to the PBX 111.
[0116]
When the PBX 111 receives the setup information, the PBX 111 returns a response signal to the semi-public adapter 920. Then, the PBX 111 reads the extension number from the called subaddress, and transfers the setup information to the telephone set 151 corresponding to the extension number.
[0117]
When the telephone set 151 receives this setup information, it returns a response signal to the PBX 111.
[0118]
When the semi-public adapter 920 receives the response signal from the PBX 111, the semi-public adapter 920 transmits the response signal to the PHS network 120. When receiving this response signal, the PHS network 120 transmits an authentication request to the semi-public adapter 920.
[0119]
When the semi-public adapter 920 receives the authentication request from the PHS network 120, the semi-public adapter 920 transmits an authentication calculation request similar to the case of FIG. 10 to the service control device 910. This authentication calculation request is received by the service control apparatus 910 via the PHS network 120.
[0120]
The service control apparatus 910 sends the received authentication calculation request to the virtual terminal authentication function unit 911. The virtual terminal authentication function unit 911 performs an authentication calculation in the same manner as in FIG. 10, and sends an authentication calculation response storing the calculation result to the semi-public adapter 920.
[0121]
The semi-public adapter 920 determines the validity of the telephone set 151 using the received authentication calculation response. The semi-public adapter 920 returns the determination result to the PHS network 120 as an authentication response.
[0122]
Thereafter, the telephone set 151 transmits a connection notification to the PBX 111. The PBX 111 transfers this connection notification to the semi-public adapter 920. Further, the semi-public adapter 920 transfers this connection notification to the PHS network 120. Thereby, the connection between the PHS network 120 and the telephone set 151 is established.
[0123]
Note that the communication procedure between the mobile terminals 181 to 183 in the local communication network 110 and the PHS network 120 is also the same as in the examples of FIGS. That is, the authentication operation is performed by the virtual terminal authentication function unit 911 as in FIGS. However, the number conversion function unit 205 performs number conversion.
[0124]
As described above, according to this embodiment, the local area communication network 110 and the PHS network 120 are used even when the wired communication terminals 151 to 156 and 161 to 163 communicate by using the PS number of the virtual communication terminal. Can be connected directly. Therefore, communication with the PHS network 120 and the public communication network 140 can be performed without using a general public line or an ISDN line.
[0125]
Further, according to this embodiment, since the authentication function is executed by the service control device 910, the processing load of the semi-public adapter 920 can be reduced.
[0126]
Sixth embodiment
Next, a sixth embodiment of the present invention will be described with reference to FIG.
[0127]
FIG. 12 is a conceptual diagram showing the overall configuration of the system according to this embodiment. In FIG. 12, the constituent elements having the same reference numerals as those in FIG. 1 are the same as those in FIG.
[0128]
The system according to this embodiment includes a service control device 1210. The service control device 1210 is a device that determines an allowable range of service using subscriber information managed internally. Further, the service control apparatus 1210 includes a representative list management unit 1211. The representative list management unit 1211 stores the PS number of each virtual mobile terminal of the semi-public adapter 130. Of these PS numbers, one is a representative number and the other is a child number. Normally, the PS number starts from “0” (for example, 050-xxxxxxx-xxx), but the representative number is a special number such as a number starting from “1” or a number starting from “#”. It may be a number.
[0129]
The public base station 121 first accesses the service control device 1210 when the mobile terminal 122 makes a call. At this time, the service control apparatus 1210 determines a service allowable range or the like. If the destination PS number received from the public base station 1220 is the above representative number, the representative list management unit 1211 of the service control device 1210 selects a free child number from the representative list. To do. This child number is sent to the public base station 121.
[0130]
The public base station 121 performs a transmission process to the semi-public adapter 130 using the child number received from the service control apparatus 1210 as the transmission destination PS number. The semi-public adapter 130 executes the incoming call processing in the same manner as in the first embodiment (see FIG. 5). As in the third embodiment, the PBX 111 is configured to send a guidance (for example, voice guidance) for transmitting an extension number to the caller when a communication line is connected to this representative number. May be.
[0131]
Further, the semi-public adapter 130 makes a busy setting request to the service control apparatus 1210 after, for example, executing an incoming call process. Upon receiving the busy setting request, the service control device 1210 recognizes that the virtual mobile terminal corresponding to this child number is busy. The semi-public adapter 130 requests the service control device 1210 to cancel the busy setting after the call is finished. The service control device 1210 recognizes that this child number has returned to the idle state by receiving the busy setting release request.
[0132]
As described above, according to this embodiment, the local area communication network 110 and the PHS network 120 are used even when the wired communication terminals 151 to 156 and 161 to 163 communicate by using the PS number of the virtual communication terminal. Can be connected directly. Therefore, communication with the PHS network 120 and the public communication network 140 can be performed without using a general public line or an ISDN line.
[0133]
Further, according to this embodiment, since the representative list management unit 1211 is provided in the service control device 1210, it is possible to make a call using the representative number from the PHS network 120 side to the local communication network 110. Communication is unlikely to be busy.
[0134]
【The invention's effect】
  As described above in detail, according to the present invention, the non-mobile communication terminal connected to the local communication network and the mobile communication network can be connected without going through the public communication network.In addition, communication costs can be reduced and number shortage can be suppressed.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing an overall configuration of a communication system according to a first embodiment.
FIG. 2 is a block diagram schematically showing an internal configuration of the semi-public adapter shown in FIG. 1;
FIG. 3 is a conceptual diagram showing a conversion table of a virtual number conversion function unit shown in FIG. 2;
FIG. 4 is an operation explanatory diagram of the communication system according to the first embodiment.
FIG. 5 is an operation explanatory diagram of the communication system according to the first embodiment.
FIG. 6 is a conceptual diagram showing an overall configuration of a communication system according to a second embodiment.
FIG. 7 is a conceptual diagram showing an overall configuration of a communication system according to a third embodiment.
FIG. 8 is a conceptual diagram showing an overall configuration of a communication system according to a fourth embodiment.
FIG. 9 is a conceptual diagram showing an overall configuration of a communication system according to a fifth embodiment.
FIG. 10 is an operation explanatory diagram of a communication system according to a fifth embodiment.
FIG. 11 is an operation explanatory diagram of a communication system according to a fifth embodiment.
FIG. 12 is a conceptual diagram showing an overall configuration of a communication system according to a sixth embodiment.
FIG. 13 is a conceptual diagram showing a schematic configuration of a conventional communication system.
[Explanation of symbols]
110 Local communication network
111 PBX
120 PHS network
121 Public base station
122 Public mobile communication terminal
130 Semi-public adapter
140 Public communication network
141-143 communication terminal
151-156 Telephone
161-163 Data communication terminal
171 to 173 On-premise base stations
181 to 183 mobile communication terminals
201 Communication path control unit
202a to 202c I line termination unit
203a to 203c I 'line termination unit
204 Call control unit
205 Number conversion function
206 Location registration function part
207 Authentication function part
208 Number conversion function part for virtual terminal
209 Virtual terminal location registration function part
210 Virtual Terminal Authentication Function Unit
211 storage unit

Claims (3)

A semi-public system for mobile communication that connects a mobile communication network and a private network,
Virtual terminal number conversion means for converting a mobile communication telephone number assigned to a virtual mobile communication terminal and a private communication telephone number assigned to a non-mobile communication terminal actually accommodated in the private communication network When,
Virtual terminal location registration means for transmitting to the mobile communication network information indicating that the virtual mobile communication terminal is within a communicable range of the local communication network;
The virtual terminal number conversion means uses, for each of the number groups consisting of a plurality of local communication telephone numbers, all the local communication telephone numbers in the number group for calling to the mobile communication network. In addition, a conversion table is provided in which each of the mobile communication telephone numbers used for receiving a call from the mobile communication network is assigned to each of the local communication telephone numbers that are representative numbers in the number group. A semi-public system for mobile communications. A semi-public system for mobile communication that connects a mobile communication network and a private network,
Virtual terminal number conversion means for converting a mobile communication telephone number assigned to a virtual mobile communication terminal and a private communication telephone number assigned to a non-mobile communication terminal actually accommodated in the private communication network When,
Virtual terminal location registration means for transmitting to the mobile communication network information indicating that the virtual mobile communication terminal is within a communicable range of the local communication network;
The virtual terminal number converting means converts the local communication telephone number into one of the mobile communication telephone numbers assigned for outgoing call when calling to the mobile communication network, and from the mobile communication network A semi-public system for mobile communication, comprising a conversion table for converting all of the mobile communication telephone numbers assigned for incoming calls into representative numbers when receiving an incoming call.   3. The semi-public system for mobile communication according to claim 1, further comprising virtual terminal authentication means for transmitting authentication information of the virtual mobile communication terminal to the mobile communication network.

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