JP2003087832A - Digital private branch exchange, digital exclusive telephone and digital private branch exchange system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital private branch exchange that eliminates the need for a wiring work in a new distributing board for building up a LAN for a Home PNA (Home Phone line Networking Alliance). SOLUTION: A main control board 20 has a system side Home PNA interface section 203, a packet switch section 202, extension telephone containing boards 18, 19, and an exchange control section 201. The extension phone containing boards 18, 19 have a plurality of extension ports 181a to 181h provided with an analog pone interface section 184 and a digital exclusive telephone interface section 185, a plurality of extension side Home PNA interface sections 186, a system side Home PNA interface section 183, a packet switch section 182, and a channel control section 181. A LAN interface board 21 has a system side Home PNA interface section 214, a LAN interface section 212, a packet switch section 213, and a LAN control section 211.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a digital private branch exchange, a digital private telephone housed in the digital private branch exchange, a digital private branch exchange and a digital private telephone, and a LAN (local area network).
The present invention relates to a digital private branch exchange system.

[0002]

2. Description of the Related Art In recent years, with the widespread use of personal computers and the Internet, there are increasing demands for building a LAN even at home, and HomePNA (H) is available as a low-cost and high-speed communication system using a telephone line at home.
home Phoneline Networking A
communication systems have been introduced. Examples of application of this system include Internet access not only in the home but also in the guest room of the hotel where the private branch exchange is installed.

FIG. 2 is a block diagram showing a conventional digital private branch exchange system, and shows an example to which HomePNA is applied.

In FIG. 2, 1 is a digital private branch exchange,
2 to 5 are analog telephones, 6 to 9 are terminal devices represented by personal computers, and 10 to 13 are terminal devices 6.
HomeP that converts LAN interface such as 10BASE-T installed in ~ 9 to HomePNA standard interface and shares line with analog telephone
NA adapter device, 14 is a wiring board, 15 is a router for connecting to the Internet, 16 is a router that pulls in each line branched on the wiring board 14 and converts the HomePNA standard interface into a LAN interface such as 10 / 100BASE-TX. 15 is a HomePNA aggregator connected to 15.

With respect to the digital private branch exchange system configured as described above, a connection and the like for constructing a LAN using HomePNA will be described.

When constructing a HomePNA LAN,
First, HomeP on the extension lines of the analog telephones 2 to 5.
After connecting the NA adapter devices 10 to 13, the analog telephones 2 to 5 and the terminal devices 6 to 9 are connected. Next, the wiring board 14 branches into a line connecting to the digital private branch exchange 1 and a line connecting to the HomePNA collecting apparatus 16. As described above, in order to realize the data communication between the terminal devices 6 to 9 and the Internet access from the terminal devices 6 to 9, the HomePNA aggregation device 16 that operates independently of the digital private branch exchange 1 is installed.

[0007] In such a digital private branch exchange system, when constructing a HomePNA LAN, it is required to use only existing telephone wiring and to keep the system price down by a simple construction.

[0008]

However, in the conventional digital private branch exchange system, a new HomePNA is newly added.
It is necessary to install the gathering device 16 and carry out the wiring work of the wiring board 14, and it is not possible to meet the demands that the work is simple and the system price is low, and the terminal device is connected. There is a limitation that the line that can be created is limited to an analog telephone line, and there is a problem that added value cannot be realized by the cooperation operation with the digital private branch exchange.

In this digital private branch exchange, HomePN on the star type wiring centering on the digital private branch exchange is used.
It is required to eliminate the need for wiring work on a new wiring board for A's LAN construction and the addition of new equipment independent of the digital private branch exchange. In addition, this digital-only telephone requires a terminal device with a HomePNA interface. Is required to be easily connected. Furthermore, in this digital private branch exchange system, communication between terminal devices, Internet access from the terminal devices, and communication between the exchange control unit of the digital private branch exchange and the terminal devices are required. It is required to enable communication between a digital dedicated telephone and a terminal device.

In order to meet these requirements, the present invention provides Ho on a star type wiring centering on a digital private branch exchange.
A digital private branch exchange that eliminates the need for wiring work on a new wiring board for the construction of a mePNA LAN and the addition of new equipment independent of the digital private branch exchange, and a terminal device with a built-in HomePNA interface can be easily digitalized. Digital dedicated telephone that can be connected to a private branch exchange, and communication between terminal devices, Internet access from the terminal devices, communication between the exchange control unit of the digital private branch exchange and the terminal devices, digital dedicated telephone and terminals It is an object to provide a digital private branch exchange system that enables communication with a device.

[0011]

In order to solve the above problems, a digital private branch exchange of the present invention comprises a plurality of extension telephone accommodation boards for accommodating extension telephones, a LAN interface board for connecting to a network, and an extension telephone. What is claimed is: 1. A digital private branch exchange having a main control board for controlling the accommodation board and the LAN interface board in an integrated manner, and a motherboard for connecting between the boards. The mother board is a HomePNA bus for connecting between the boards and the board for each board. The main control board has a control system bus for connecting the
The first system-side Hom connected to the HomePNA bus
ePNA interface section and first system side hom
It has a first packet switching unit that performs data communication via the ePNA interface unit, and a switching control unit that integrally controls the extension telephone accommodation board and the LAN interface board, and the extension telephone accommodation board is an analog standard telephone interface unit. A plurality of extension ports having a digital dedicated telephone interface unit, a plurality of extension-side HomePNA interface units connected to the analog standard telephone interface unit, a second system-side HomePNA interface unit connected to the HomePNA bus, and an extension line. Side H
omePNA interface unit and second system side Ho
a second packet exchange unit for transmitting and receiving data packets to and from the mePNA interface unit; and a plurality of extension ports under the control of the main control board and a line control unit for controlling the second packet exchange unit, The LAN interface board includes a third system-side HomePNA interface unit connected to the HomePNA bus, a LAN interface unit connected to the Internet via an external router, a third system-side HomePNA interface unit and a LAN interface unit. And a LAN control unit for controlling the third packet switching unit under the control of the main control board.

This eliminates the need for wiring work on a new wiring board for constructing the HomePNA LAN on the star type wiring centering on the digital private branch exchange and for adding new equipment independent of the digital private branch exchange. A digital private branch exchange can be obtained.

In order to solve the above problems, a digital private telephone of the present invention is a digital private telephone housed in an extension port of the digital private branch exchange, and is an analog standard telephone interface section and a digital private telephone interface of the digital private branch exchange. A first modular jack to which parts are connected, and second and third modular jacks for connecting only the analog standard telephone interface from the first modular jack, and the second modular jack has an analog telephone And a terminal device having a HomePNA interface built-in can be connected to the third modular jack.

As a result, it is possible to obtain a digital-only telephone in which the terminal device having the HomePNA interface can be easily connected to the digital private branch exchange.

In order to solve the above-mentioned problems, a digital private branch exchange system of the present invention comprises the digital private branch exchange and a plurality of digital telephones, and a star wiring type HomePNA L via the digital private branch exchange.
It has a configuration in which an AN is constructed.

This enables communication between the terminal devices, Internet access from the terminal devices, communication between the exchange control unit of the digital private branch exchange and the terminal devices, and communication between the digital dedicated telephone and the terminal devices. A digital private branch exchange system can be obtained.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A digital private branch exchange according to claim 1 of the present invention comprises a plurality of extension telephone accommodation boards for accommodating extension telephones, a LAN interface board for connecting to a network, and an extension telephone accommodation board. A digital private branch exchange having a main control board for controlling LAN interface boards and a motherboard for connecting the boards, the mother board connecting the boards with a HomePNA bus for connecting the boards. The main control board has a control system bus and a communication path bus that connects between extension telephone accommodation boards, and the main control board has a first system-side HomePNA interface unit that is connected to the HomePNA bus and a first system-side HomePNA interface unit. The first packet switching unit that performs data communication via the The extension telephone accommodation board has a plurality of extension ports having an analog standard telephone interface section and a digital dedicated telephone interface section, and an analog standard telephone interface section. A plurality of home PNA interface units on the extension side connected to the Home
Second system-side HomeP connected to ePNA bus
A second data packet transmission / reception between the NA interface unit, the extension HomePNA interface unit, and the second system HomePNA interface unit.
And a line control unit that controls a plurality of extension ports and a second packet switching unit under the control of the main control board. The LAN interface board is a HomeP
Third system-side HomePNA connected to NA bus
A third interface for transmitting and receiving data packets between the interface unit, the LAN interface unit connected to the Internet via an external router, and the third system-side HomePNA interface unit and the LAN interface unit.
And a LAN control unit for controlling the third packet switching unit under the control of the main control board.

With this configuration, the home of the motherboard
Since data packets can be exchanged among the main control board, the extension telephone accommodation board, and the LAN interface board via the PNA bus, a HomePNA LAN on a star type wiring centering on a digital private branch exchange is constructed. Therefore, it is possible to eliminate the need for wiring work in a new wiring board for constructing a LAN and the addition of new equipment independent of the digital private branch exchange.

According to a second aspect of the digital telephone,
A digital dedicated telephone housed in an extension port of the digital private branch exchange according to claim 1, wherein a first modular jack to which the analog standard telephone interface section and the digital dedicated telephone interface section of the digital private branch exchange are connected, It has a second and a third modular jack for taking out and connecting only the analog standard telephone interface from the one modular jack. An analog telephone can be connected to the second modular jack, and a third modular jack can be connected. The terminal device having the HomePNA interface is connectable.

With this configuration, the terminal device having the HomePNA interface and connected to the third modular jack can be easily connected to the extension port of the digital private branch exchange through the digital dedicated telephone.
It has an effect that the terminal device having the omePNA interface can be easily connected to the digital private branch exchange.

A digital private branch exchange system according to a third aspect comprises the digital private branch exchange according to the first aspect and a plurality of digital private telephones according to the second aspect, and star wiring is provided through the digital private branch exchange. HomePNA of type
It was decided to construct a LAN.

With this configuration, the terminal device having the HomePNA interface connected to the third modular jack can be connected to the extension port of the digital private branch exchange via the digital dedicated telephone, and each unit in the digital private branch exchange or an external unit. Since the above terminal devices can be connected to each device, communication between the terminal devices, internet access from the terminal devices, communication between the exchange control unit of the digital private branch exchange and the terminal device, digital dedicated telephone and terminal It has an effect of enabling communication with the device.

FIG. 1 shows an embodiment of the present invention.
Will be explained.

(First Embodiment) FIG. 1 is a block diagram showing a digital private branch exchange system having a digital private branch exchange and a digital private telephone according to a first embodiment of the present invention.

In FIG. 1, 17 is a digital private branch exchange, 23 and 24 are digital telephones accommodated in the digital private branch exchange 17, 25 and 26 are analog telephones connected to the digital telephones 23 and 24, and 27 and 28 are HomeP connected to digital telephones 23 and 24
The NA interface built-in terminal device 29 is a router for connecting to the Internet. Digital private branch exchange 17
Is an extension telephone accommodation board 18, 19 and a main control board 2
0, the LAN interface board 21, and the motherboard 22 are mounted.

The extension telephone accommodation board 18 is under the control of the main control board 20 and controls the entire extension telephone accommodation board 18, a line controller 181 and extension ports 181a to 181h for accommodating the digital telephones 23 and 24, and data. A packet-switching unit 182 that manages packet switching with a link-layer level signal, and a system-side HomePNA interface unit (second link) that converts a data-link layer-level signal and a physical-layer-level signal between the packet switching unit 182. System side HomePNA interface section 183 and analog standard telephone interface sections 184a to 184h
And digital dedicated telephone interface units 185a-18
5h and extension side HomePNA interface units 186a to 186h for converting a data link layer level signal and a physical layer level signal between the packet switching unit 182. The main control board 20 is a digital private branch exchange 1.
7. A switching control unit 201 that controls switching of the whole, a packet switching unit 202 that controls switching of packets by data link layer level signals under the control of the switching control unit 201, and a data link layer between the packet switching unit 202. System-side HomePNA that converts level signals and physical layer level signals
The interface unit (HomePNA interface unit on the first system side) 203. The LAN interface board 21 controls the entire LAN interface board 21 under the control of the main control board 20, a LAN interface section 212 for connecting to an external LAN of the digital private branch exchange 17, and a data link layer level. A system-side HomePNA interface unit (third system-side HomePNA interface) that performs conversion between a data link layer level signal and a physical layer level signal between the packet switching unit 213 that controls packet switching by signals and the packet switching unit 213. Part) 214. Although the internal configuration of the extension telephone accommodation board 19 is not shown, it is the same as that of the extension telephone accommodation board 18.

The digital dedicated telephones 23 and 24 have first modular jacks 231 and 241, respectively.
The second modular jacks 232 and 242 and the third modular jacks 233 and 243 are provided, and the first modular jacks 231 and 241 are connected to the extension telephone accommodation board 18 of the digital private branch exchange 17 to provide the second modular jack. Analog telephones 25 and 26 are connected to the jacks 232 and 242, respectively, and HomePNA interface built-in terminal devices 27 and 28 are connected to the third modular jacks 233 and 243, respectively. Here, there are two types of interfaces connected to the digital private branch exchange 17 by the first modular jacks 231 and 241: an analog standard telephone interface and a digital dedicated telephone interface, and signals on the digital dedicated telephone interface are digital dedicated telephones. Signals on the analog standard telephone interface, although terminated at 23 and 24, are bypass connected to the second modular jacks 232 and 242 and the third modular jacks 233 and 243.

The data communication operation of the digital private branch exchange system configured as described above will be described in detail by dividing it into first to fifth cases.

First, as the first case, HomePNA
Data communication between the terminal device 27 with a built-in interface and the terminal device 28 with a built-in HomePNA interface will be described.

The data packet transmitted from the Home PNA interface built-in terminal device 27 is transmitted on the analog standard telephone interface line via the third modular jack 233 and the first modular jack 231 of the digital telephone 23. Extension side Home
The signal arrives at the PNA interface unit 186 a, is converted from a physical layer level signal into a data link layer level signal, and is temporarily stored in the packet switching unit 182. When the line control unit 181 detects that this data packet is a data packet to be transmitted to the home PNA interface built-in terminal device 28, it controls the packet switching unit 182 to send this data packet to the extension HomePNA interface unit 186h. Via the digital dedicated telephone 24. The data packet transmitted on the analog standard telephone interface line is sent to the third modular jack 243 via the first modular jack 241 of the digital dedicated telephone 24, and the Hom
It is received by the terminal device 28 with a built-in ePNA interface.

The data packet transmission from the terminal device 27 with a built-in HomePNA interface to the terminal device 28 with a built-in HomePNA interface has been described above.
The same operation is performed in the opposite direction.

As a second case, the Internet access from the terminal device 27 with a built-in HomePNA interface will be described.

In the same operation as in the first case, HomeP
The data packet transmitted from the terminal device 27 with a built-in NA interface is temporarily stored in the packet switching unit 182. When the line control unit 181 detects that this data packet is a data packet to be transmitted to the Internet, the line control unit 181 controls the packet switching unit 182 to send this data packet to the motherboard 22 via the system-side HomePNA interface unit 183. To the HomePNA bus. The data packet sent to the motherboard 22 is received by the system-side HomePNA interface unit 214 of the LAN interface board 21,
The signal of the physical layer level is converted into the signal of the data link layer level and temporarily stored in the packet switching unit 213. L
When the AN control unit 211 detects that this data packet is a data packet to be sent to the Internet, the AN control unit 211 controls the packet switching unit 213 to send the data packet to the LAN interface unit 212. Then, this data packet is sent to the Internet via the router 29.

The case where data is sent from the HomePNA interface built-in terminal device 27 to the Internet has been described above. However, in the opposite direction (when data from the Internet is input to the HomePNA interface built-in terminal device 27). The same operation is performed.

As a third case, a terminal device 27 with a built-in HomePNA interface and a digital dedicated telephone 23
The data communication between and will be described.

The data packet sent from the home PNA interface built-in terminal device 27 is temporarily stored in the packet switching unit 182 as in the first case. When the line control unit 181 detects that the received data packet is a data packet to the digital dedicated telephone 23, the line control unit 181 transmits this data packet via the digital dedicated telephone interface unit 185a, and this data packet is sent to the digital dedicated telephone. It is received at 23.

The case where the data packet from the HomePNA interface built-in terminal device 27 is received by the digital telephone 23 has been described above, but the same operation is performed in the reverse direction.

As a fourth case, data communication between the home PNA interface built-in terminal device 27 and the exchange control unit 201 of the main control board 20 will be described.

The data packet sent from the home PNA interface built-in terminal device 27 is temporarily stored in the packet switching unit 182 as in the first case. When the line control unit 181 detects that the received data packet is a data packet to the exchange control unit 201,
This data packet is sent to the Home 22 of the motherboard 22 via the Home PNA interface 183 on the system side.
Output to PNA bus. Then this data packet
It is temporarily stored in the packet switching unit 202 via the system-side HomePNA interface unit 203 of the main control board 20, and is received by the switching control unit 201.

Although the above description has been made with respect to the case where the exchange control unit 201 receives the data packet transmitted from the terminal device 27 with a built-in HomePNA interface, the same operation is performed in the reverse direction.

As a fifth case, the Internet access from the exchange control unit 201 of the main control board 20 will be described.

The transmission data packet from the exchange control unit 201 is temporarily stored in the packet exchange unit 202 and then output to the HomePNA bus of the motherboard 22 via the system-side HomePNA interface unit 203.
After that, the packet is temporarily stored in the packet switching unit 213 via the system-side HomePNA interface unit 214 of the LAN interface board 21. LAN control unit 21
When detecting that the received data packet is a transmission data packet to the Internet, 1 controls the packet switching unit 213 and sends this data packet to the LAN interface unit 212. Then the router 29
This data packet is sent to the Internet via.

Although the above description has been made with respect to the case where the exchange control unit 201 transmits to the Internet, the same operation is performed in the reverse direction.

As described above, according to the present embodiment, a plurality of extension telephone accommodation boards 18, 19 for accommodating extension telephones.
LAN interface board 21 for connecting to the network, extension telephone accommodation boards 18, 19 and LA
A main control board 20 that controls the N interface board 21 in general, and a mother board 2 for connecting between the boards.
2 is a digital private branch exchange 17 having a HomePNA bus for connecting the boards, a control bus for connecting the boards, and a communication path for connecting the extension telephone accommodation boards 18, 19. The main control board 20 has a system bus, and the main control board 20 is connected to the HomePNA bus.
03, a first packet switching unit 202 that performs data communication via the first system-side HomePNA interface unit 203, extension telephone accommodation boards 18 and 19, and a LAN.
Exchange control unit 2 that controls the interface board 21
01, the extension telephone accommodating boards 18, 19 include a plurality of extension ports 181a to 181h having analog standard telephone interface sections 184a to 184h and digital dedicated telephone interface sections 185a to 185h, and an analog standard telephone interface section. A plurality of extension-side HomePNA interface units 186a to 186h connected to 184a to 184h and a second system-side HomePNA interface unit 1 connected to the HomePNA bus.
83 and an extension-side HomePNA interface unit 186
a to 186h and the second system side HomePNA interface unit 183, the second packet switching unit 182 for transmitting and receiving data packets to and from each other, and the main control board 20.
Under the control of a plurality of extension ports 181a-181h and a second
And a line control unit 181 for controlling the packet switching unit 182 of the LAN interface board 21.
Third system-side HomePN connected to PNA bus
A third interface for transmitting and receiving data packets between the A interface unit 214, the LAN interface unit 212 connected to the Internet via the external router 29, and the third system-side HomePNA interface unit 214 and the LAN interface unit 212. Packet switching unit 21
3 and a LAN control unit 211 that controls the third packet switching unit 213 under the control of the main control board 20, so that the main control board 20 and the extension telephone accommodation board 18 via the HomePNA bus of the motherboard 22 are provided. Since data packets can be exchanged between the LAN 19 and the LAN interface board 21, the digital private branch exchange 17
LA of HomePNA on star type wiring centered on
N can be built, and it is possible to eliminate the need for wiring work on a new wiring board for building a LAN and the addition of new equipment independent of the digital private branch exchange.

Digital private telephones 23 and 24 accommodated in the extension ports 181a to 181h of the digital private branch exchange 17, the analog standard telephone interface units 184a to 184h and the digital private telephone interface unit 185a to the digital private branch exchange 17. 185h
First modular jack 231, 241 to which is connected
And the second and third modular jacks 232, 242, 23 for connecting only the analog standard telephone interface from the first modular jacks 231, 241.
3 and 243, and the second modular jack 23
Analog telephones 25 and 26 can be connected to 2, 242, and H can be connected to the third modular jacks 233 and 243.
Since the terminal devices 27 and 28 with a built-in homePNA interface can be connected, the terminal devices 27 and 28 with a built-in HomePNA interface connected to the third modular jacks 233 and 243 are connected to the digital dedicated telephone 2
Since it is possible to easily connect to the extension ports 181a to 181h of the digital private branch exchange 17 via 3, 24, the terminal device 27 with a built-in HomePNA interface,
28 can be easily connected to the digital private branch exchange 17.

Further, the digital private branch exchange 17 and a plurality of digital telephones 23 and 24 are provided, and a star wiring type HomePNA via the digital private branch exchange 17 is provided.
Due to the construction of the LAN, the terminal devices 27 and 28 with a built-in HomePNA interface connected to the third modular jacks 233 and 243 are connected to the extension ports 181a to 181h of the digital private branch exchange 17 through the digital dedicated telephones 23 and 24. HomePN to each unit in the digital private branch exchange 17 and each external device.
Since the terminal devices 27 and 28 with a built-in A interface can be connected, communication between the terminal devices and HomeP
Internet access from the terminal devices 27 and 28 with a built-in NA interface, communication between the exchange control unit 201 of the digital private branch exchange 17 and the terminal devices 27 and 28 with a built-in HomePNA interface, a digital dedicated telephone 23,
24 and HomePNA interface built-in terminal device 2
The communication with 7, 28 becomes possible.

[0047]

As described above, according to the digital private branch exchange of claim 1 of the present invention, a plurality of extension telephone accommodation boards for accommodating extension telephones, a LAN interface board for connecting to a network, A digital private branch exchange having a main control board for integrally controlling an extension telephone accommodation board and a LAN interface board, and a motherboard for connecting between the boards, wherein the motherboard has a HomePNA bus for connecting between the boards,
It has a control system bus connecting between the boards and a communication path bus connecting between the extension telephone accommodation boards, and the main control board is the first system side H connected to the HomePNA bus.
omePNA interface unit and first system side H
A first packet switching unit that performs data communication via the omePNA interface unit, an extension telephone accommodation board, and an LA
The extension telephone accommodation board has a plurality of extension ports having an analog standard telephone interface section and a digital dedicated telephone interface section, and an analog standard telephone interface section. A plurality of extension-side HomePNA interface units, a second system-side HomePNA interface unit connected to the HomePNA bus, an extension-side HomePNA interface unit, and a second system-side H
a second packet switching unit for transmitting and receiving data packets to and from the omePNA interface unit; and a plurality of extension ports under the control of the main control board and a line control unit for controlling the second packet switching unit, The LAN interface board includes a third system-side HomePNA interface unit connected to the HomePNA bus, a LAN interface unit connected to the Internet via an external router, a third system-side HomePNA interface unit and a LAN interface unit. HomeP of the motherboard by having a third packet switching unit for transmitting and receiving data packets between the two and a LAN control unit for controlling the third packet switching unit under the control of the main control board.
Since data packets can be exchanged among the main control board, extension telephone board, and LAN interface board via the NA bus, a HomePNA LAN is constructed on a star type wiring centered on a digital private branch exchange. Therefore, it is possible to obtain an advantageous effect that it is possible to eliminate the need for wiring work in a new wiring board for constructing a LAN and the addition of new equipment independent of the digital private branch exchange.

According to a second aspect of the present invention, there is provided a digital private telephone which is housed in an extension port of the digital private branch exchange according to the first aspect of the present invention. It has a first modular jack to which a dedicated telephone interface section is connected, and second and third modular jacks for taking out and connecting only an analog standard telephone interface from the first modular jack. Is connected to an analog telephone, and a terminal device having a HomePNA interface can be connected to the third modular jack, so that the HomeP connected to the third modular jack can be connected.
Since the terminal device having the NA interface can be easily connected to the extension port of the digital private branch exchange via the digital private telephone, the advantageous effect that the terminal device having the HomePNA interface can be easily connected to the digital private branch exchange. Is obtained.

A digital private branch exchange system according to a third aspect includes the digital private branch exchange according to the first aspect and a plurality of digital private telephones according to the second aspect, and star wiring is provided through the digital private branch exchange. HomePNA of type
By constructing the LAN, the terminal device with a HomePNA interface connected to the third modular jack can be connected to the extension port of the digital private branch exchange via the digital dedicated telephone, and each section in the digital private branch exchange and the external Since the above terminal device can be connected to each device, communication between terminal devices, Internet access from the terminal devices, communication between the exchange control unit of the digital private branch exchange and the terminal devices, digital dedicated telephone, The advantageous effect that communication with the terminal device is possible is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a digital private branch exchange system having a digital private branch exchange and a digital private telephone according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a conventional digital private branch exchange system.

[Explanation of symbols]

17 Digital Private Branch Exchange 18, 19 Extension telephone accommodation board 20 Main control board 21 LAN interface board 22 Motherboard 23, 24 Digital dedicated telephone 25, 26 Analog telephone 27, 28 HomePNA interface built-in terminal device 29 Router 181 Line control unit 181a to 181h Extension Ports 182, 202, 213 Packet switching units 183, 203, 214 System side HomePNA interface units 184a to 184h Analog standard telephone interface units 185a to 185h Digital dedicated telephone interface units 186a to 186h Extension side HomePNA interface unit 201 Exchange control unit 211 LAN control Part 212 LAN interface part 231,241 First modular jack 232,242 Second modular Click 233 and 243 third modular jack

Claims (3)

[Claims] 1. A plurality of extension telephone accommodation boards for accommodating extension telephones, a LAN interface board for connecting to a network, the extension telephone accommodation board, and the LA.
A digital private branch exchange having a main control board that totally controls an N interface board and a motherboard for connecting the boards, wherein the motherboard is a Hom connecting the boards.
An ePNA bus, a control system bus connecting between the boards, and a communication path system bus connecting between the extension telephone accommodation boards, and the main control board is a first system connected to the HomePNA bus. And a first packet switching unit for performing data communication via the first system-side HomePNA interface unit, and a switching control unit for centrally controlling the extension telephone accommodation board and the LAN interface board. The extension telephone accommodation board includes a plurality of extension ports each having an analog standard telephone interface section and a digital dedicated telephone interface section, a plurality of extension-side HomePNA interface sections connected to the analog standard telephone interface section, and Second system side connected to HomePNA bus And omePNA interface unit,
The extension-side HomePNA interface unit and the second
Second packet switching unit for transmitting and receiving data packets to and from the system side HomePNA interface unit, and line control for controlling the plurality of extension ports and the second packet switching unit under the control of the main control board. The LAN interface board, the HomePN
A third system-side HomePNA interface unit connected to the A bus, a LAN interface unit connected to the Internet via an external router, the third system-side HomePNA interface unit, and the LA.
A digital packet switching unit for transmitting and receiving data packets to and from an N interface unit; and a LAN control unit for controlling the third packet switching unit under the control of the main control board. Private branch exchange. 2. A digital dedicated telephone set housed in an extension port of the digital private branch exchange according to claim 1, wherein an analog standard telephone interface section and a digital dedicated telephone interface section of the digital private branch exchange are connected. Modular jacks, and second and third modular jacks for extracting and connecting only an analog standard telephone interface from the first modular jack, and an analog telephone can be connected to the second modular jack. A digital dedicated telephone, wherein a terminal device having a HomePNA interface can be connected to the third modular jack. 3. A digital private branch exchange according to claim 1,
A plurality of digital dedicated telephones according to claim 2, and a star wiring type H via the digital private branch exchange.
A digital private branch exchange system characterized by constructing a LAN of omePNA.