KR19990071442A - Apparatus and method for improving network operation - Google Patents

Abstract

A network architecture called DTTC (Digital Subscriber Line) -To-The-Curb (DSL Connection to the Building Edge) / DTTB (DSL-To-The-Building) It uses a combination of DSL and full Ethernet operating standards to provide a network architecture for high-speed Internet access at low cost. The DTTC / DTTB network includes a DSL transceiver device of a central station that is connected to a DSL transceiver device of a remote terminal via a DSL, and the DSL transceiver device of the remote terminal may or may not be stored inside the integrated EtherDSL unit. . The DSL transceiver device of the remote terminal is connected to a control processor connected to a plurality of first 10BaseT interfaces each connected to an Ethernet line. A plurality of second 10BaseT interfaces are connected to at least one of the Ethernet lines. The control processor may also be connected to an Ethernet hub interface, which is directly connected to an existing CATV cable network in the building. The CATV network is connected to a plurality of impedance transformers, each connected to a respective network interface card (NIC) of the personal computer. The DSL line may be an ADSL (asymmetric DSL), an SDSL (symmetric DSL), a DSL of a high communication speed, or a DSL of an ultra high speed communication speed.

Description

Apparatus and method for improving network operation

Summary of the Invention The present invention relates to a broadband communication network architecture, in particular an apparatus for improving the operation of broadband networks to support the transmission of voice and data over digital subscriber lines by combining xDSL and Ethernet technologies in a way to significantly reduce data transmission costs. And to a method thereof.

Recently, various various technologies have been used to provide high-speed Internet access to telecommuting users who do small businesses. However, these techniques each have undesirable inherent limitations in pursuing low cost and high speed access.

Currently, analog modems dominate the retail market as a preferred means of access for telecommuting consumers. This is also a technique of choice for small business owners. However, such modems are currently limited in bandwidth by about 56K bps with technology, and in some countries by 53K bps. Although the related technology is improved, there is little room for access speed improvement as long as noise conditions prevail on most telephone lines. Such a modem also paralyzes the telephone service of the telephone exchange offices and limits the amount of other calls that may be provided as passages on the mobile communication network.

The Integrated Service Digital Network (ISDN) provides the total bandwidth of 144K bps resulting from adding two voice / data channels of 64K bps to one signal channel of 16K bps. However, these technologies are not widely available in North America because of the cost and technical complexity required. Moreover, the bandwidth provided is not sufficient for a large number of users attempting to access the network.

FTTC / FTTB (Fiber-To-The-Curb and Fiber-To-Building) is originally Switched for Video-On-Demand and Switching Digital Video Broadcasting. As provided by Digital Video Broadcast, it is designed to provide broadband multimedia access with real-time video data transmission. This technology uses fiber optics to transfer data directly to the edge of the building or to the building, and uses high-speed modem technology to provide downstream communications at 51M bps and upstream at 1.6M bps. Internet access bandwidth is sufficient for these technologies, but it is quite expensive. The technology may ultimately be cost-effective in the future, but it is not simply competing with current cable companies' data transfer capabilities and other technologies.

Hybrid fiber / coaxial cable, or HFC, relates to the construction of optical fiber and coaxial cables used to distribute local broadband communications such as voice, video and data. Existing cable facilities owned by cable operators are attempting to use such technology to provide two-way communications for video imaging and Internet access. However, this technique has some serious technical barriers. This technical barrier is represented by the fact that most cable facilities in recent years have not been built for two-way communication, and that the apparently large frequency band provided by the HFC is shared by hundreds or thousands of consumers at the same time. . Thus, the actual frequency bandwidth available to one consumer is smaller than expected. Moreover, shared media connections do not provide a high level of confidentiality security among users.

Finally, Asymmetrical Digital Subscriber Line (ADSL) or its high speed variant (collectively known as xDSL) offers the most promising prospect for high speed internet access at this point. However, even this technique is too expensive for the average consumer, and the link cost per station is approximately £ 800 to £ 1,200 depending on the equipment chosen to connect to the ADSL line. The available bandwidth that can be achieved through common telephone line infrastructure with recently available copper wire is 6M bps downstream and 640K bps upstream.

Asynchronous Transfer Mode (ATM), a high-speed connection-oriented switching and multiplexing technique that uses 53 byte cells to transmit different types of simultaneous network traffic, including voice, data and video, is intended for use with the xDSL technique. In order to be ideal. However, the cost of achieving ATM is a barrier to its use. The advantages of ATM include virtual paths and virtual channel connections, which can be used to separate network traffic, and many types of traffic management capabilities.

Ethernet provides high-speed network access in a cost-effective manner within a LAN environment. This is a standardized and completed technology with hardware and software widely available for consumers. However, it is designed for LAN applications and may only be used over a distance of 100m without a relay device element.

Accordingly, in order to solve the above disadvantages of the prior art, the main object of the present invention is to provide a cost effective and high-speed Internet access to telecommuters working in small businesses. To provide an apparatus and method for improving network operation combining the best elements.

It is yet another object of the present invention to provide a novel network architecture that accommodates the frequency bandwidth requirements of thousands of telecommuters while simultaneously providing the confidential security anticipated by each individual user.

1 is a block diagram illustrating a DTTC / DTTB network in accordance with the present invention.

2 is a block diagram illustrating an alternative DTTC / DTTB network in accordance with the present invention.

In order to achieve the above object, according to an aspect of the present invention, DTTC (DSL (digital subscriber line) -To-The-Curb: DSL connection to the edge of the building) / DTTB (DSL-To-The- Building (DSL connection to the building) network is provided, the DTTC / DTTB network,

A DSL having a first end and a second end;

A DSL transceiver of a central station connected to said first end of said DSL;

A DSL transceiver of a remote terminal coupled to the second end of the DSL;

A control processor coupled to the DSL transceiver of the remote terminal, and a plurality of first 10BaseT interfaces each coupled to an Ethernet line;

And a plurality of second 10BaseT interfaces each connected to at least one of the Ethernet lines.

According to another aspect of the invention, the DSL having a first end and a second end;

A DSL transceiver of a central station connected to said first end of said DSL;

A DSL transceiver of a remote terminal coupled to the second end of the DSL;

An Ethernet hub interface connected to a CATV cable network having a control processor coupled to the DSL transceiver of the remote terminal and a plurality of first termination points respectively coupled to an impedance transformer;

A DTTC / DTTB network is provided comprising a plurality of second Ethernet network interface cards each connected to at least one of the impedance transformers.

The DTTC / DTTB network may use asymmetric DSL (ADSL), symmetric DSL (SDSL), high speed DSL (HDSL) or ultra high speed DSL (VDSL). The DTTC / DTTB may also use ATM (asynchronous transmission scheme) to transmit information.

In addition, the DTTC / DTTB network may operate as a DSL transceiver of a central station connected to a Digital Subscriber Line Access Multiplexer (DSLAM). In addition, the DSL transceiver of the remote terminal, the control processor, and the plurality of first 10BaseT interfaces (or Ethernet hubs) may be configured as an integrated EtherDSL device.

According to yet another aspect of the present invention, there is provided a method of operating a DTTC / DTTB network, the method comprising:

Transmitting the first data stream from the DSL transceiver of the central station to the DSL transceiver of the remote terminal via the DSL;

Sending a first data stream from a DSL transceiver of the remote terminal to a control processor;

Separating the first data stream into one or more first information packets at the control processor;

Sending the one or more first information packets from the control processor to at least one first 10BaseT interface;

Transmitting the at least one first information packet from the at least one first 10BaseT interface to at least one second 10BaseT interface;

Sending one or more second information packets from the at least one second 10BaseT interface to the at least one first 10BaseT interface;

Sending the one or more second information packets from the at least one first 10BaseT interface to the control processor;

Buffering the at least one second information packet into a second data stream at the control processor;

Sending the second data stream from the control processor to a DSL transceiver of the remote terminal;

And transmitting the second data stream from the DSL transceiver of the remote terminal to the DSL transceiver of the central station via the DSL.

The operation method of the DTTC / DTTB network may use an asymmetric DSL (ADSL), a symmetric DSL (SDSL), a high-speed DSL (HDSL) or ultra-fast DSL (VDSL). The method may also use ATM technology to transmit information via the DSL.

According to yet another aspect of the present invention, there is provided a method of operating a DTTC / DTTB network, the method comprising:

Transmitting the first data stream from the DSL transceiver of the central station to the DSL transceiver of the remote terminal via the DSL;

Sending the first data stream from a DSL transceiver of the remote terminal to a control processor;

Separating the first data stream into one or more first information packets at the control processor;

Sending the one or more first information packets from the control processor to at least one Ethernet hub interface;

Sending the at least one first information packet from the Ethernet hub interface to at least one network interface card;

Sending one or more second information packets from the at least one network interface card to the Ethernet hub;

Sending the at least one second information packet from the Ethernet hub to the control processor;

Buffering the at least one second information packet into a second data stream at the control processor;

Sending the second data stream from the control processor to a DSL transceiver of the remote terminal;

And transmitting the second data stream from the DSL transceiver of the remote terminal to the DSL transceiver of the central station via the DSL.

The method of operation of the DTTC / DTTB network may also be used when the DSL transceiver of the central station is connected to a DSLAM (Digital Subscriber Line Access Multiplexer). Moreover, the methods may be used in situations where the DSL transceiver of the remote terminal, the control processor, and the plurality of first 10BaseT interfaces (or Ethernet hubs) are typically configured as EtherDSL devices.

The first advantage of the present invention is that the DTTC / DTTB network is much more cost effective than a network using only ADSL or FTTC technology. In fact, it is anticipated that the DTTC / DTTB network of the present invention may be implemented at a cost of less than one quarter of the cost required for recent high speed network access technology.

A second advantage of the present invention is that the DTTC / DTTB network has recently provided a higher frequency bandwidth available for analog modems, ISDN and cable company modems.

A third advantage of the present invention is that the DTTC / DTTB network provides the same level of confidentiality security as is favored by users using modems of the latest ADSL, FTTC, ISDN and cable companies.

A fourth advantage of the present invention is that the DTTC / DTTB network can use ATM technology to transmit information via DSL.

The fifth advantage of the present invention is that the DTTC / DTTB network allows individual users to use the highest DSL line speed as a practical problem even if the DSL line is shared with other users.

A sixth advantage of the present invention is the availability of complete and low cost Ethernet technology. In addition, the use of Ethernet makes software and hardware readily available and inexpensive. Finally, Ethernet hardware is generally compatible, and individual users are free to purchase Ethernet 10BaseT interface cards from various manufacturers, while ensuring sufficient interoperability.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and like reference numerals refer to like parts throughout the drawings.

Asymmetric Digital Subscriber Line (ADSL) technology uses traditional telephone lines consisting of traditional copper wire to provide subscribers with high-speed Internet access, local area network (LAN) interconnections for telecommuters, and broadband services such as video on demand. do. Combining ADSL with ATM technology provides the ability to transport multimedia data that guarantees a unique quality of service for various kinds of traffic.

While ADSL provides high frequency bandwidth communications over long distances, including those required for most local transmissions, from long distance telephone lines and central offices to homes requiring high-speed Internet access, they are quite expensive.

Ethernet provides high-speed network access in a cost-effective manner within a LAN environment. It is a standardized, complete technology with hardware and software that is widely available for consumers. However, it is designed for LAN applications and can only be used over a distance of 100m without a repeater element.

The DTTC / DTTB architecture of the present invention combines the strength of ADSL and Ethernet technology, while eliminating the inherent disadvantages of ADSL and Ethernet technology. As shown in the figure, the DTTC / DTTB solution utilizes Ethernet to provide network access to the final hectometer network at significantly reduced cost, while still providing high frequency bandwidth. Ethernet access is combined with ADSL through an integrated EtherDSL device that acts as a multiplexer for traffic coming in and out of small-business workers. The integrated EtherDSL device is expected to provide buffering, security, and traffic management capabilities.

The ADSL side of the network provides long-range, high-speed capability for Internet access over existing telephone lines. In addition, ADSL provides many types of network traffic management capabilities through the use of ATM.

1, the physical layout for the DTTC / DTTB network 10 of the present invention is shown. The central station's DSL transceiver, or ATU-C 30, is connected to the DSL circuit 100 using almost ATM technology with virtual channel capability for transmitting information over the network side 110. The ATU-C 30 is a type of Remote Loop Station (DLC) or ADSL DSLAM that is a type of remote central station equipment that allows efficient transmission of voice traffic through multiplexing and high-speed trunk interfaces to and from the switch. digital subscriber line access multiplexer (20). Local access to the network is through a line card of the DLC that converts analog voice traffic into digital traffic for network transmission. The DSL line 100 is connected to a remote terminal DSL transceiver or ATU-R 50, which may be located 15,000 feet above the ATU-C 30. Standard telephony lines may be used to implement the DSL line 100.

The ATU-R 50 is coupled to a control processor 130 that receives the data stream provided by the ATU-R 50 over the DSL line 100. In addition, the control processor 130 sends the buffered data stream to the ATU-C 30 through the ATU-R 50 and DSL line 100. The control processor 130 also transmits and receives information from the first 10BaseT interface 60 in the plurality of 10BaseT interface 65. The ATU-R 50, the control processor 130 and the plurality of first 10BaseT interfaces 65 are housed together as an integrated EtherDSL device 40, embedded and / or interconnected together.

Finally, each 10BaseT interface 60 of the plurality of first 10BaseT interfaces 65 is connected to an Ethernet line 70, and the Ethernet line 70 is again connected to a second 10BaseT interface 90 of the plurality of second 10BaseT interfaces 95. Connected. The plurality of second 10BaseT interface 95 may be arranged over a series of houses 80 or small businesses. The user side 120 consisting of the plurality of first and second 10BaseT interfaces 65 and 95 and the Ethernet line 70 may extend about 270 feet apart for each Ethernet line 70.

The DTTC / DTTB network 10 of the present invention provides a user side 120 occupying the final hetometer of the network, and the network side 110 has an ATM virtual channel capability via the DSL line 100, preferably ADSL (Asynchronous DSL). To provide. For each house 80, the DTTC / DTTB network 10 establishes one or more ATM virtual channels over the DSL circuit 100. Each time a user residing in a house 80 attempts to send a packet to the DTTC / DTTB network 10, each of the second 10BaseT interfaces 90 of the plurality of second 10BaseT interfaces 95 is connected via the appropriate Ethernet line 70. It is used to send a packet to each of the first 10BaseT interfaces 60 of the plurality of first 10BaseT interfaces 65. The packet just received by the integrated Ethernet device 40 is buffered by the control processor 130 along with another packet if necessary, and the second 10BaseT interface 90 used for the transmission of the packet is identified by the control processor 130. . The buffered packet is then changed to an ATM cell data structure, and a properly formatted ATM cell or plurality of cells are sent to the ATU-R 50 to send the DSL circuit 100 over an ATM virtual channel dedicated to a second 10BaseT interface 90. Is sent via. If multiple virtual channels are configured in each housing 80, the destination MAC (Media Access Control) address of the packet is used to determine which virtual channel should be used to transmit the packet data. Will be checked by processor 130. The ATU-C 130 is used to receive the suitably formatted ATM cell or a plurality of cells.

When transmitting data in the opposite direction, an ATM cell received at the ATU-R 50 via the DSL line is assembled into a packet at the EtherDLS by the control processor 130. The virtual channel identity of the incoming packet is used to determine the destination Ethernet 10BaseT interface 90 so that an appropriate housing 80 can be selected to receive the segmented packet. Then, the packet is sent from the control processor 130 to the appropriate 10BaseT interface 60 of the plurality of first 10BaseT interfaces 65 connected to the destination 10BaseT interface 90 in the plurality of second 10BaseT interfaces 95 by the Ethernet line 70. Is sent to.

The integrated EtherDLS unit 40 will generally include a control processor 130, an ATM / DSL up-link card (eg, the ATU-R 50) and the plurality of first 10BaseT interfaces 65; In general, 16 Ethernets will be provided. The integrated EtherDLS unit 40 is expected to have at least four modes of operation: ATM dedicated access mode, Ethernet dedicated access mode, ATM uplink mode to act as a LAN hub, and DSL uplink mode to act as a LAN hub. do. In the ATM dedicated access mode, the Ethernet packet of the individual user is changed into a format required by the ATM, and is transmitted through a dedicated virtual channel using the DSL line 100. Individual users connected to the same integrated EtherDSL 40 will not be able to access each other's packets, and the mapping between each Ethernet port and ATM virtual channel will be used to switch network traffic.

In the case of Ethernet only access mode, Ethernet data frames are sent directly to the DSL circuit 100 without any change to the ATM protocol. Each individual user's access is still dedicated for confidential security, and users connected to the same integrated EtherDSL unit 40 cannot access each other's packets without proper network protocol. In this case, the MAC address is used to switch network traffic. When operating in an ATM uplink mode in which the DTTC / DTTB network acts as a LAN hub, the EtherDSL unit 40 becomes a CPE (Customer Premise Equipment), which is a telecommunication facility installed in a subscriber's home or business. Such telecommunications facilities are generally owned by a customer (subscriber) in contrast to network facilities owned by telecommunications carriers. The EtherDSL unit 40 no longer operates in the DTTC / DTTB environment.

The EtherDSL unit 40 performs the role of LAN in a user environment having an ATM / DSL uplink. Packets originally generated from the user on the second 10BaseT interface 90 will be sent by the EtherDSL 40 to all other second 10BaseT interface 90 connected to the EtherDSL unit 40. In addition, the EtherDSL unit 40 checks the destination MAC address to determine whether the frame being transmitted is a broadcast frame or a frame not intended for any other local MAC.

As a result, if the frame being transmitted is a broadcast frame, the packet will be sent to the ATM / DSL uplink using a virtual channel shared by all the second 10BaseT interfaces 90. If the integrated EtherDSL unit 40 is connected to multiple destinations using different virtual channels, the destination MAC address can be used to select the appropriate virtual channel for data transmission.

In the case of a packet originally generated in the ATM / DSL uplink, the integrated EtherDSL unit 40 will send the packet to each second 10BaseT interface 90 via the first 10BaseT interface 60. Each second 10BaseT interface 90 is responsible for removing those packets that are not explicitly addressed for certain packets.

When operating in a DSL uplink mode that allows the network to act as a LAN hub, the data transfer process is very similar to ATM uplink, except that no ATM protocol is used on the DSL line 100. In this case, the central station or digital loop carrier must be configured to handle ATM adaptation of the received data.

For DTTC applications, the integrated EtherDSL unit 40 is expected to be in the outdoor neighborhood of a telecommuting neighborhood. The integrated EtherDSL unit 40 provides stable access to the Internet for residential customers (subscribers) and home offices. In addition, the integrated EtherDSL unit 40 provides stable access to a corporate network for telecommuters. As mentioned above, either of these modes may be used for these applications, particularly an ATM only access mode, with an ATM only access mode being preferred. This particular implementation allows for better data traffic isolation, as well as multiple virtual channels per house. In order for a user to access the Internet and a public network, an ether or either-or virtual channel control scheme is used, while providing stable separation between each network. For DTTC applications, the integrated EtherDSL unit 40 must be environmentally protected underground and typically includes four quad-port Ethernet interface cards, an ADSL uplink card, and a control processor card in configuration. do.

For DTTB applications, the integrated EtherDSL unit 40 will typically be installed in a utility room in a building. The same application and mode of operation discussed in relation to DTTC applies to DTTB as well. However, the environmental requirements of the integrated EtherDSL unit 40 are more tolerant than the environmental requirements of DTTC applications, thereby significantly reducing packaging costs. In the case of DTTB, a 32-port Ethernet interface can generally be used. Also in this case, VDSL may be used. However, due to the more limited transmission range of the VDSL unit, ATU-C 30 in the Digital Loop Carrier (DLC) location should be used.

LAN hubs with ATM uplink mode and LAN hubs with DSL uplink mode are ideal for both small businesses and areas with offices. The integrated EtherDSL unit 40 operating in these modes provides not only basic LAN functionality, but also uplinks to private (private) networks and / or public networks. For example, a public library may use the integrated EtherDSL unit 40 to access its local PC database using personal computer and Ethernet technology, and the ATM / DSL uplink may use a branch library. Access the main library and the internet. Thus, individual users operating personal computers can retrieve information from local branch databases, databases stored in the main library, and over the Internet. Public schools, bank branches, government offices, and other places that use LANs will also have similar applications. In this case too, the ATM uplink mode is preferred. In this case, there is no need to environmentally protect the integrated EtherDSL unit 40 underground.

FIG. 2 is a block diagram illustrating an alternative embodiment of the present invention utilizing cable TV (CATV) wiring disposed within many buildings. Instead of installing the integrated EtherDSL unit 40 outside the building, the integrated EtherDSL unit 40 may be placed directly inside or outside the building 150 housing the CATV cable network 160. In the figure, the integrated EtherDSL unit 40 is disposed directly inside the building 150, and instead of using multiple 10BaseT interfaces, the integrated EtherDSL unit 40 has one or more Ethernet hub interfaces 170 and the one or more Ethernets. The hub interface 170 is connected to a plurality of Ethernet network interface cards (NICs) each installed in a single user personal computer (PC) 190. In this case, the hardwire link has a 75 ohm CATV cable 200, the CATV cable 200 starting at the integrated EtherDSL unit 40 for each user and starting at the 75-50 ohm transformer 210. It ends. Each transformer 210 is connected to a 50 ohm Ethernet cable 220 connected to a single NIC 180.

As discussed herein, in all cases, xDSL may be used for the DSL circuit 100, including, but not limited to, ADSL, VDS, and SDSL.

While the present invention has been illustrated and described with reference to specific embodiments, the foregoing disclosure is merely an application of the present invention, and specific embodiments disclosed herein as best mode for carrying out the present invention. It is not limited to.

In addition, those skilled in the art can readily understand that the present invention may be variously modified and changed without departing from the spirit or scope of the present invention provided by the following claims. Could be.

As mentioned above, according to the DTTC / DTTB network according to the present invention, it is much more cost effective than a network using only ADSL or FTTC technology, and the higher frequency bandwidth available for analog modems, ISDN and cable company modems. Is provided, provides the same level of confidentiality security as is favored by users of modems in recent ADSL, FTTC, ISDN and cable companies, and can use ATM technology to transmit information over DSL, Although individual users can use the highest DSL line speed as a practical matter, even if the DSL line is shared with other users, full and low cost Ethernet technology is available, and Ethernet hardware is generally incompatible. Individual users have created Ethernet 10BaseT interface cards from a variety of manufacturers. This can be purchased freely in hand, sufficient interoperability is guaranteed.

Claims (32)

A DSL having a first end and a second end; A DSL transceiver of a central station connected to said first end of said DSL; A DSL transceiver of a remote terminal coupled to the second end of the DSL; A control processor coupled to the DSL transceiver of the remote terminal, and a plurality of first 10BaseT interfaces each coupled to an Ethernet line; And a plurality of second 10BaseT interfaces each connected to at least one of said Ethernet lines. The DTTC / DTTB network of claim 1, wherein the DSL is an asymmetric DSL (ADSL). The DTTC / DTTB network of claim 1, wherein the DSL is a symmetric DSL (SDSL). The DTTC / DTTB network of claim 1, wherein the DSL is a high speed communication DSL (HDSL). The DTTC / DTTB network of claim 1, wherein the DSL is a DSL (VDSL) of a very high communication speed. The DTTC / DTTB network of claim 1, wherein ATM (asynchronous transmission scheme) is used to transmit information via the DSL. The DTTC / DTTB network of claim 1, wherein the DSL transceiver of the central station is connected to a DSLAM (Digital Subscriber Line Multiplexer). The DTTC / DTTB network of claim 1, wherein the DSL transceiver of the remote terminal, the control processor, and the plurality of first 10BaseT interfaces are configured as an integrated EtherDSL device. In a method of operating a DTTC / DTTB network, Transmitting the first data stream from the DSL transceiver of the central station to the DSL transceiver of the remote terminal via the DSL; Sending a first data stream from a DSL transceiver of the remote terminal to a control processor; Separating the first data stream into one or more first information packets at the control processor; Sending the one or more first information packets from the control processor to at least one first 10BaseT interface; Transmitting the at least one first information packet from the at least one first 10BaseT interface to at least one second 10BaseT interface; Sending one or more second information packets from the at least one second 10BaseT interface to the at least one first 10BaseT interface; Sending the one or more second information packets from the at least one first 10BaseT interface to the control processor; Buffering the at least one second information packet into a second data stream at the control processor; Sending the second data stream from the control processor to a DSL transceiver of the remote terminal; Transmitting the second data stream from the DSL transceiver of the remote terminal to the DSL transceiver of the central station via the DSL. 10. The method of claim 9, wherein the DSL is an asymmetric DSL (ADSL). 10. The method of claim 9, wherein the DSL is a symmetric DSL (SDSL). 10. The method of claim 9, wherein the DSL is a high speed DSL (HDSL). 10. The method of claim 9, wherein the DSL is a DSL (VDSL) of a very high communication rate. 10. The method of claim 9, wherein asynchronous transmission scheme (ATM) is used to transmit information via the DSL. 10. The method of claim 9, wherein the DSL transceiver of the central station is connected to a DSLAM (Digital Subscriber Line Multiplexer). 10. The method of claim 9, wherein the DSL transceiver of the remote terminal, the control processor, and the plurality of first 10BaseT interfaces are configured as an integrated EtherDSL device. A DSL having a first end and a second end; A DSL transceiver of a central station connected to said first end of said DSL; A DSL transceiver of a remote terminal coupled to the second end of the DSL; An Ethernet hub interface connected to a CATV cable network having a control processor coupled to the DSL transceiver of the remote terminal and a plurality of first endpoints each coupled to an impedance transformer; And a plurality of second Ethernet network interface cards each connected to at least one of said impedance transformers. 18. The DTTC / DTTB network of claim 17, wherein the DSL is an asymmetric DSL (ADSL). 18. The DTTC / DTTB network of claim 17, wherein the DSL is a symmetric DSL (SDSL). 18. The DTTC / DTTB network of claim 17, wherein the DSL is a high speed communication DSL (HDSL). 18. The DTTC / DTTB network of claim 17, wherein the DSL is a DSL (VDSL) of a very high communication speed. 18. The DTTC / DTTB network of claim 17, wherein ATM (asynchronous transmission scheme) is used to transmit information via the DSL. 18. The DTTC / DTTB network of claim 17, wherein the DSL transceiver of the central station is connected to a DSLAM (Digital Subscriber Line Multiplexer). 18. The DTTC / DTTB network of claim 17, wherein the DSL transceiver, the control processor, and the Ethernet hub of the remote terminal are configured as an integrated EtherDSL device. In a method of operating a DTTC / DTTB network, Transmitting the first data stream from the DSL transceiver of the central station to the DSL transceiver of the remote terminal via the DSL; Sending the first data stream from a DSL transceiver of the remote terminal to a control processor; Separating the first data stream into one or more first information packets at the control processor; Sending the one or more first information packets from the control processor to at least one Ethernet hub interface; Sending the at least one first information packet from the Ethernet hub interface to at least one network interface card; Sending one or more second information packets from the at least one network interface card to the Ethernet hub; Sending the at least one second information packet from the Ethernet hub to the control processor; Buffering the at least one second information packet into a second data stream at the control processor; Sending the second data stream from the control processor to a DSL transceiver of the remote terminal; Transmitting the second data stream from the DSL transceiver of the remote terminal to the DSL transceiver of the central station via the DSL. 27. The method of claim 25, wherein the DSL is an asymmetric DSL (ADSL). 27. The method of claim 25, wherein the DSL is a symmetric DSL (SDSL). 27. The method of claim 25, wherein the DSL is a high speed communication DSL (HDSL). 27. The method of claim 25, wherein the DSL is a DSL (VDSL) of very high communication speed. 27. The method of claim 25, wherein asynchronous transmission scheme (ATM) is used to transmit information via the DSL. 27. The method of claim 25, wherein the DSL transceiver of the central station is connected to a DSLAM (Digital Subscriber Line Multiplexer). 27. The method of claim 25, wherein the DSL transceiver, the control processor, and the Ethernet hub of the remote terminal are configured as an integrated EtherDSL device.