JP2010109496A - Dc power distributor and communication device wiring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a DC power distributer and a communication device wiring system wherein wire saving and workability can be improved by simultaneously supplying power to a plurality of communication devices through LAN cables. <P>SOLUTION: The communication device wiring system 1 includes: a plurality of communication devices (an ONU 11, a router 12, a VoIP adaptor 13, and a hub 14) for converting communication signals to be transmitted and received between communication terminal devices (a telephone set 21, and PCs 22a to 22n) configuring a LAN and a WAN; and a DC power supply distributer 2 configured by connecting power superposition circuits 3a to 3c on the ways of LAN cables for connecting the plurality of communication devices, respectively. The power superposition circuits 3a to 3c in the DC power distributer 2 receive the supply of DC power from a distribution panel 6 and superpose DC power to respective lAN cables to supply operation power to respective communication devices. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a DC power distributor and a communication device wiring system that distributes power to a plurality of communication devices via a LAN cable.

  In recent years, various Internet connection services such as CATV (cable television), xDSL, or optical fiber have been provided, and modems (line terminators) for connection to the Internet, such as cable modems, xDSL modems, or ONU (Optical Network Unit). ) Are installed in the house, and there are an increasing number of homes and stores that are always connected to the Internet.

  In addition, it is not uncommon for each home to have multiple PCs due to the price reduction of PCs (personal computers). When connecting to the Internet, a router is connected to the modem, and a repeater hub or switching is connected to the router.・ Hubs are often connected to connect multiple PCs to the Internet at the same time.

  In addition, the use of so-called IP telephones using VoIP technology is increasing due to the improvement in communication speed and the advance of VoIP (Voice over Internet Protocol) technology. When using IP telephones, a VoIP adapter is attached to the above-mentioned modem. Connect and make a call by connecting a general telephone to the VoIP adapter.

  There is also a multimedia wiring system in which communication devices such as routers, hubs, and VoIP adapters are housed in an information board together with the above-described modem (for example, Patent Document 1).

In this type of wiring system, each communication device (router, hub, VoIP adapter) including the above-mentioned modem is connected by a LAN cable such as category 5, and each device is placed on an Ethernet (registered trademark) frame. Communication is performed using a communication signal including an IP packet.
JP 2004-88379 A

  By the way, each communication device (modem, router, hub, VoIP adapter) is supplied with power from a commercial AC power source as an operating power source, and is converted into a DC power source by an AC-DC converter connected internally or externally. Convert and each is working. For this reason, wiring for supplying commercial AC power is required for each of these devices, and a number of cables need to be connected.

  In addition, each communication device and modem are required to guarantee power during a power outage, and even when using an uninterruptible power supply such as UPS, wiring is also required to supply power to each device. There were problems such as having to connect many cables.

  The present invention has been made in view of the above reasons, and the object of the present invention is to supply power to a plurality of communication devices via a LAN cable at the same time, thereby providing power wiring for each device. It is an object of the present invention to provide a DC power supply distributor and a communication device wiring system with a reduced number.

  In order to achieve the above object, according to the first aspect of the present invention, there are a plurality of conversions of communication signals that are connected between different networks and exchanged between a communication terminal device constituting one network and the other network. A DC power distributor used in a communication device wiring system including various types of communication devices, and is connected in the middle of a LAN cable that connects a plurality of communication devices, and the DC power is superimposed on the LAN cable. An electric power superimposing means is provided.

  Here, the communication signal conversion performed by the communication device is, for example, a signal conversion such as conversion of a physical condition of a transmission path such as conversion of an optical signal and an electric signal, or conversion of a voice call signal and an IP packet by VoIP technology. Includes format conversion and address conversion for converting a plurality of communication terminal devices constituting a LAN with a single global IP address (IP address in the WAN) by converting the IP address and port number in the IP packet. .

  According to the second aspect of the present invention, the communication signal of one network and the communication signal of the other network are mutually converted, and a line terminator for connecting networks having different communication methods, and the voice call signal is transmitted to the IP packet in the LAN. VoIP adapter that enables telephone calls, converts IP packets from a plurality of communication terminal devices and IP packets from the line termination device, and controls transmission and reception of IP packets between the communication terminal devices And a communication terminal device connected via a LAN cable, a hub for transmitting and receiving communication signals of each communication terminal device, and the line terminator, VoIP adapter, router, and hub are connected as communication devices. A direct-current power distributor according to claim 1, wherein the power superimposing means included in the direct-current power distributor connects each communication device. Each superimposed with a direct current power source to Buru, and supplying operating power to each of the communication devices.

  According to the first aspect of the present invention, since the power superimposing means can supply the operating power of each communication device by superimposing the power on the LAN cable connecting the communication devices, the power is supplied to each communication device. This eliminates the need for wiring, improves wiring saving and workability, and allows each communication device to be connected to the WAN.

  According to the invention of claim 2, the power superimposing means of the DC power supply distributor superimposes the power on the LAN cable connecting each of the line terminator, router, hub, and VoIP adapter, and the operating power of each communication device. Therefore, since power is supplied to each communication device, no wiring is required, and the communication device can be connected to the WAN with improved wiring and workability.

  Hereinafter, an embodiment of a communication device wiring system using a DC power distributor according to the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a communication device wiring system. The communication device wiring system 1 includes an ONU 11 (line terminator) as a communication device, a router 12, a VoIP adapter 13, a hub 14, a DC power supply distributor 2, and the like. It has. Each communication device is connected to the DC power supply distributor 2 via the LAN cable 5 (5a... 5f), and operates by receiving power supply from the DC power supply distributor 2. It is a communication device wiring system that converts communication signals exchanged between communication terminal devices such as PCs 22a... 22n and an optical network 8 (WAN) connected to the Internet.

  Here, the communication signal conversion performed by each communication device is the conversion of the physical condition of the transmission line such as the conversion of the optical signal in the optical network 8 and the electrical signal in the LAN, and the voice call signal by the VoIP technology. Conversion of signal formats such as conversion with IP packets, and conversion of IP addresses and port numbers in IP packets to configure a plurality of communication terminal devices constituting a LAN with a single global IP address (IP address in WAN) IP packet translation by an address translation function connected to the WAN is included.

  The distribution board 6 installed in the home is connected to the main breaker 61 to which the commercial AC power supply 7 is connected to the primary side, the branch breaker 62 connected to the secondary side of the main breaker 61, and the branch breaker 62. The DC power source is obtained by coordinating the AC / DC converter 63 for converting the input AC power source to DC, the output of the AC / DC converter 63, and the outputs from the solar cell 65, the secondary battery 66, and the fuel cell 67. A coordination control unit 64 that supplies DC power to the wiring L1 is housed, and power is supplied to the DC power distributor 2 described later via the DC power wiring L1.

  The DC power supply distributor 2 includes a plurality of power superimposing circuits 3 (3a, 3b, 3c) and a plurality of modular jacks 4 (4a... 4f) connected to each power superimposing circuit 3 as a set. It operates by receiving the supply of DC power from the distribution board 6 via the DC power supply wiring L1.

  The LAN cable 5 includes an 8-pole 8-core modular plug 51 standardized by ISO 8877 and a twisted pair cable 52 having an 8-pole 8-core modular plug 51 at both ends. The 51 contacts are connected. The LAN cable 5 may be any cable that can support PoE (Power over Ethernet (registered trademark)), and is generally TIA / EIA-568B. A cable of category 5e or the like conforming to the performance standard defined in 2-2001 is used.

  Each communication device is connected to the DC power distributor 2 by inserting one modular plug 51 of the LAN cable 5 into the modular jack 4 of the DC power distributor 2 and connecting the other modular plug 51 to each communication device. It is connected by being inserted into a modular jack (not shown).

  The power superimposing circuit 3a is provided in the middle of the electric path connecting the modular jacks 4a and 4b. The other modular plug 51 is connected to the LAN side port (not shown) of the ONU 11 in the modular jack 4a. The modular plug 51 of the LAN cable 5a is inserted. Further, the modular jack 51 of the LAN cable 5b in which the other modular plug 51 is connected to the WAN side port (not shown) of the router 12 is inserted into the modular jack 3b. That is, the ONU 11 and the router 12 are connected via the LAN cables 5a and 5b and the DC power supply distributor 2, and can exchange communication signals with each other.

  As shown in FIG. 2, the power superimposing circuit 3a includes one set of terminals P1... P8 to which the first to eighth pins 41 to 48 of the modular jacks 4a and 4b are respectively connected. The terminals P1 and P1 corresponding to each other are connected between the terminals P8 and P8 via the electric power superimposing unit 31 to form an electric circuit between the modular jacks 4a and 4b. Here, the power superimposing circuit 3a receives supply of DC power from the distribution board 6 connected through the DC power supply wiring L1, and superimposes DC power between the terminals P1 and P2 and between the terminals P3 and P6. The power is superimposed on the LAN cables 5a and 5b through the modular jacks 4a and 4b. Although IP packets are transmitted and received as communication signals between terminals P1 and P2 and between terminals P3 and P6, as standardized as IEEE 802.3af, there is no interference with transmission contents of IP packets. , Power can be superimposed.

  The power superimposing circuit 3b is provided in the middle of the electric circuit connecting the modular jacks 4c and 4d, and the other modular plug 51 is connected to the LAN side port (not shown) of the router 12 in the modular jack 4c. The modular plug 51 of the LAN cable 5c is inserted. Also, the modular plug 51 of the LAN cable 5d in which the other modular plug 51 is connected to the WAN side port (not shown) of the VoIP adapter 13 is inserted into the modular jack 3d. That is, the router 12 and the VoIP adapter 13 are connected via the LAN cables 5c and 5d and the DC power supply distributor 2, and can exchange communication signals with each other.

  The power superimposing circuit 3b has a circuit similar to the power superimposing circuit 3a, receives a supply of DC power from the distribution board 6 connected via the DC power supply wiring L1, and has a terminal P1 included in the power superimposing circuit 3b. , P2 and terminals P3 and P6, DC power is superimposed, and power is superimposed on LAN cables 5c and 5d via modular jacks 4c and 4d.

  The power superimposing circuit 3c is provided in the middle of the electrical path connecting the modular jacks 4e and 4f. The other modular plug 51 is connected to the LAN side port (not shown) of the VoIP adapter 13 in the modular jack 4e. A modular plug 51 of the connected LAN cable 5e is inserted. Further, the modular plug 51 of the LAN cable 5f in which the other modular plug 51 is connected to a connection port (not shown) of the hub 14 is inserted into the modular jack 3f. That is, the VoIP adapter 13 and the hub 14 are connected via the LAN cables 5e and 5f and the DC power supply distributor 2, and can exchange communication signals with each other.

  The power superimposing circuit 3c has a circuit similar to the power superimposing circuit 3a, receives a supply of DC power from the distribution board 6 connected via the DC power supply wiring L1, and has a terminal P1 included in the power superimposing circuit 3c. , P2 and terminals P3 and P6, DC power is superimposed, and power is superimposed on LAN cables 5e and 5f via modular jacks 4e and 4f.

  Thus, the ONU 11, the router 12, the VoIP adapter 13, and the hub 14 are sequentially connected as communication devices between the WAN and the LAN, and LAN cables 5 (5a... 5f) for connecting the communication devices are provided. It is connected to the DC power supply distributor 2. Further, power is superimposed on the LAN cables 5 (5a... 5f) connecting the communication devices by the power superimposing circuit 3 (3a... 3c) included in the DC power supply distributor 2.

  The ONU 11 has a PoE power reception function. If a DC signal is superimposed on a communication signal flowing through the LAN cable 5a connected to the LAN side, the ONU 11 separates the communication signal and the DC power source, and uses the separated DC power source. It operates as an operating power source for the ONU 11. The ONU 11 converts a communication signal input from the LAN cable 5 a connected to the LAN side into an optical signal used in the optical network 8 and transmits the optical signal to the optical network 8 and receives it from the optical network 8. The optical signal thus converted is converted into a communication signal used on the LAN side and transmitted to the LAN cable 5a.

  The router 12 has a PoE power receiving function, and a DC power source is superimposed on a communication signal flowing through the LAN cable 5b connected to the WAN side or a communication signal flowing through the LAN cable 5c connected to the LAN side. The communication signal and the power source are separated, and the router 12 operates as an operation power source. The router 12 has an authentication function based on PPPoE, and is connected to the optical line network 8 by transmitting the Ethernet (registered trademark) frame including PPP authentication data to the optical line network 8 for authentication. A service such as DNS or DHCP can be received from an ISP server (not shown), and at the same time, a so-called global IP can be acquired to communicate with a server or a communication terminal device connected to the optical network 8. .

  The router 12 has a routing function and an address conversion function. The router 12 confirms the destination address of the IP packet received via the LAN cable 5c connected to the LAN side, and the LAN cable 5b on the WAN side or the LAN side The LAN cable 5c is selected for transmission and transmitted. Here, when transmitting to the LAN cable 5b on the WAN side, the address is converted and transmitted to the optical network 8 as an IP packet transmitted from the global IP. The router 12 converts the address of the IP packet received via the LAN cable 5b connected to the WAN side, and the VoIP adapter 13 connected to the LAN side and the 22a to 22b connected via the hub 14 are connected. The packet is transmitted to the LAN cable 5c as an IP packet with any one of the destination addresses. As a result, communication by a plurality of communication terminal devices is possible only by acquiring one global IP in the optical network 8 from the ISP server.

  The VoIP adapter 13 has a PoE power receiving function, and a DC power supply is superimposed on a communication signal flowing through the LAN cable 5d connected to the WAN side or a communication signal flowing through the LAN cable 5e connected to the LAN side. For example, the communication signal and the power supply are separated and operate as an operating power supply for the VoIP adapter 13. Further, the telephone 21 is connected to the VoIP adapter 13 by any one of the 6-pole 6-core, 6-pole 4-core, and 6-pole 2-core telephone cables L2. The VoIP adapter 13 converts the analog telephone signal transmitted from the telephone 21 into a digital signal, further converts the digital signal into an IP packet and outputs the IP packet to the LAN cable 5d, and among the IP packets input from the LAN cable 5d If the destination address is a VoIP adapter, it is converted into a digital signal, and the digital signal is converted into an analog signal and transmitted to the telephone 21. Of the IP packets received from the LAN cable 5d, IP packets whose destination address is not the VoIP adapter are transmitted to the hub 14 via the LAN cable 5e connected to the LAN side and transmitted from the LAN cable 5e. The IP packet is transmitted to the LAN cable 5d.

  The hub 14 has a PoE power reception function, and a DC power source is superimposed on a communication signal flowing through the LAN cable 5f connected to any one of a plurality of connection ports (not shown) of the hub 14. Then, the communication signal and the power source are separated and the hub 14 operates as an operating power source. A plurality of PCs 22a... 22n are connected to the hub 14 via LAN cables L3a... L3n, and IP packets input via the LAN cable 5f are multicast to the PCs 22a. Also, when an IP packet transmitted from any of the PCs 22a... 22n is input, it is output to the LAN cable 5f and multicast to the LAN cable 5 connected to other than the PC that has input the IP packet.

  Here, a case where the PC 22a communicates with another server (not shown) connected to the optical network 8 will be described. When the PC 22a transmits an IP packet storing the address of a server connected to the optical network 8 as a destination address to the hub 14, the hub 14 transmits the IP packet to the PCs 22b to 22n, and the LAN cable 5f. And transmitted to the VoIP adapter 13 via the DC power supply distributor 2. The PC 22b to PC 22n discard the received IP packet because the destination IP address in the received IP packet is not its own address, but the VoIP adapter sends the received IP packet to the router 12 via the LAN cable 5d. Send. The router 12 confirms that the destination address of the received IP packet exists in the optical network 8, converts the IP packet into an address, and transmits it to the ONU 11 via the LAN cable 5b. The ONU 11 converts the received IP signal, which is a communication signal, into an optical signal and transmits it to a server connected to the optical network.

  On the other hand, when receiving a signal from the WAN side, a server connected to the optical network transmits an optical signal including an IP packet to the ONU 11 via the optical network. The ONU 11 converts the received optical signal into an IP packet as a communication signal, and transmits it to the router 12 via the LAN cable 5a. The router 12 performs address conversion on the received IP packet, and transmits the IP packet having the destination address as the PC 22a to the VoIP adapter 13 via the LAN cable 5c. The VoIP adapter 13 confirms that the destination address of the received IP packet is not the address of the VoIP adapter 13, and transmits it to the hub 14 via the LAN cable 5e. The hub 14 multicasts the received IP packet to the PCs 22a to 22n, and the PC 22a receiving the IP packet confirms that the destination address of the IP packet is its own address, and acquires information in the IP packet. . Further, the PCs 22b to 22n confirm that the destination address of the received IP packet is not the address of the own device, and discard the received IP packet.

  In this way, by exchanging signals between the PC 22a and an arbitrary server connected to the optical line network, communication between the PC 22a and the server or communication terminal device connected to the optical line network 8 is performed.

  At the same time, each modular jack 4 is connected to the LAN cable 5 (5a... 5f) connecting each communication device (ONU 11, router 12, VoIP adapter 13, hub 14) by the power superimposing circuit 3 (3a... 3c). Electric power is superimposed via (4a ... 4f). Since each communication device has the PoE power receiving function as described above, each communication device can operate by receiving power supply from the power superimposed on the LAN cable 5.

  As described above, each communication device (ONU 11, router 12, VoIP adapter 13, hub 14) receives DC power superimposed by the DC power distributor 2 via the LAN cable 5 (5 a... 5 f). While operating, the communication terminal devices connected to the LAN and WAN can communicate with each other via the LAN cable 5 (5a ... 5f), so that it is possible to eliminate the power cable for securing the operating power of each communication device. It is possible to provide a communication device wiring system with improved wiring saving and workability.

  In this system, as a power source for supplying DC power to the power superimposing circuit 3 (3a... 3f), an AC / DC converter 63 that converts AC current supplied from the commercial AC power source 7 into DC current, and the commercial AC power source 7 And a backup power source composed of a solar battery 65, a secondary battery 66, a fuel cell 67, etc. that supply DC power during a power failure. These backup power sources (solar cell 65, secondary battery 66, fuel cell 67) are provided during a power failure. ) Is supplied to the power superimposing circuit 3, so that the DC power is superimposed on the LAN cable 5 (5a... 5f) even during a power outage, and each communication device (ONU 11, router 12, VoIP adapter 13, hub 14). Can be operated.

  In this embodiment, the power superimposing unit 31 of each power superimposing circuit 3 superimposes a DC power source between terminals P1 and P2 and between terminals P3 and P6 used for transmission of communication signals. A DC power supply may be superimposed between terminals P4 and P5 that are not used for transmission of communication signals and between terminals P7 and P8. In this case, each communication device needs to acquire power from the twisted pair corresponding to the terminals P4 and P5 and the terminals P7 and P8. As standardized by IEEE 802.3af, each communication device must Since the devices are generally compatible with the power feeding method, the same communication device can be used.

  In this embodiment, a repeater hub that multicasts received IP packets to other devices is used as the hub 14. However, a layer 2 switch that determines a destination MAC address and limits a destination can be used. A switch may be used, and a device such as a router having a similar function may be used.

  In this embodiment, the ONU is used to connect to the optical network, but the case where the xDSL modem is used to connect to the xDSL network or the case where the cable modem is used to connect to the CATV network. Is the same.

  Furthermore, in this embodiment, a line terminator, a router, a VoIP adapter, and a hub are connected as communication devices, but any one of the communication devices is selectively connected to a DC power distributor. In addition, different communication devices having a plurality of functions corresponding to PoE may be connected. Further, the communication devices may be connected by changing the connection order of the communication devices.

1 is a system configuration diagram showing a communication device wiring system according to an embodiment of the present invention. It is a schematic circuit diagram which shows the principal part of DC power supply divider | distributor used with the communication apparatus wiring system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Communication equipment wiring system 2 DC power supply distributor 3a ... 3c Electric power superimposition circuit (electric power superimposition means)
4a ... 4f Modular jack 5a ... 5f LAN cable 6 Distribution board 11 ONU (Line termination unit)
12 router 13 VoIP adapter 14 hub 21 telephone (communication terminal equipment)
22a ... 22n PC (communication terminal equipment)

Claims (2)

DC used in a communication equipment wiring system that is connected between different networks and includes a plurality of types of communication equipment that converts communication signals exchanged between the communication terminal equipment constituting one network and the other network. A power distributor,
A DC power supply distributor comprising power superimposing means connected in the middle of a LAN cable for connecting a plurality of communication devices and superimposing a DC power supply on the LAN cable. A line terminator for mutually converting a communication signal of one network and a communication signal of the other network and connecting networks having different communication methods;
A VoIP adapter that converts voice call signals into IP packets in the LAN and enables telephone calls;
A router that converts IP packets from a plurality of communication terminal devices and IP packets from the line termination device, and controls transmission / reception of IP packets between the communication terminal devices;
A hub in which communication terminal devices are connected via a LAN cable and send and receive communication signals of each communication terminal device;
The line termination device, the VoIP adapter, the router, and the hub are connected to each other as a communication device.
A communication device wiring system, wherein the power superimposing means included in the DC power supply distributor supplies the operating power to each communication device by superimposing the DC power on each LAN cable connecting the communication devices.

Images