CN1354577A - Method and system for providing internet service - Google Patents

Abstract

The present invention comprises a system and method for creating and using a regional internet service network installed over an existing wired radio transmission network. The invention can provide broadband access of integrated telecommunication service for many users at high data rate. This internet solution guarantees high quality service for internet/intranet applications. Such applications include traditional data transmission, real-time control, multimedia and interactive collaboration supported by efficiently managing bandwidth and caching resources, multiple service classes (i.e., people accessing the network at different rates and bandwidths), admission control, flexible resource allocation, and explicit price performance control.

Description

Method and system for providing internet service

The present invention relates to the provision of Internet services, in particular to the provision of Internet services over a radio transmission network.

Most Russian cities share a wired radio transmission network established in the 1830s for broadcasting radio programs and as a means of secure communication between the government and its citizens in states of emergency and war. Since its initial installation, the radio transmission network has been continuously expanded and upgraded.

The radio transmission network of Russian cities consists of the infrastructure of telecommunication lines connected to every residential and commercial building in the city. In each such building, some twisted copper wires connect the telecommunication lines to each sub-unit (unit, office, etc.) in the building. Each subunit is equipped with one or more jacks/outlets for connection to a radio receiver. For example, there are more than 3.1 million radio jacks used in residential and commercial units in St. Petersburg and surrounding suburbs. To support this radio transmission network, more than 5,000 kilometers of telecommunication lines were laid in the region.

The radio transmission network is repeatedly upgraded to incorporate the latest applicable technology. Existing hardware used by the St. Petersburg Network allows radio transmission of three programmes. Among other services, the network provides speech transmission with little distortion using advanced and efficient amplification equipment. So far, this radio transmission network structure has only been used for radio. The network has never been used to provide Internet services.

Currently known Internet transmission networks have some deficiencies, including the following. Internet access networks based on dial-up technology (public telephone lines) cannot 1) connect all of their customers/users to Internet services simultaneously; 2) efficiently utilize bandwidth resources; or 3) provide just the right amount of data for different levels of users and services Rate.

An Internet access network using allocated communication channels entails additional operating costs due to the necessity of providing each potential user with a separate access channel, which leads to increased Internet usage costs.

Internet access networks using ADSL modems limit network systems due to the limitation that typical values cannot exceed the maximum available data rate of 8 Mbps. These networks also required the installation of additional equipment at the telephone exchange and at each customer, adding significantly to the cost of the service.

The use of power line telecommunications (PLT) technology as an Internet access solution is limited to "narrowband" applications such as telemetry. The technology is mainly only suitable for reducing the operating costs of electricity companies, and faces the problem of lack of standards and interoperability.

Wireless network technology has limited bandwidth (maximum 50Mbps), no mature telecommunication standards and infrastructure, and is more expensive than other Internet access technologies.

In summary, the present invention includes systems and methods for utilizing existing radio transmission lines to enable Internet access and related information technology (IT) services without interfering with the basic purpose of the radio transmission network - the broadcast of radio programs and the government's communication to its citizens in emergency situations Issue a special announcement.

The preferred embodiment allows splitting of the radio transmission network to allow multiple IT applications to be implemented using the same telecommunication lines. These applications include providing 1) standard (modem-based) Internet access, 2) high-speed Internet access, 3) Internet telephony, 4) real-time, uncompressed audio and video transmission, and 5) high-speed data transmission.

The preferred embodiment comprises a regional Internet service network installed on top of an existing wired radio transmission network. The preferred embodiment is capable of providing broadband access to integrated telecommunications services at high data rates to many users simultaneously. This Internet solution guarantees high quality service for a wide range of Internet/Intranet applications. Such applications include traditional data transmission; real-time control; multimedia and interactive collaboration supported by efficient management of bandwidth and buffering resources; multiple classes of service (i.e., people accessing the network at different rates and bandwidths); admission control; flexible resource allocation; and explicit price-performance controls. In practice, the preferred system includes an overall network structure with individual users and LANs, interconnected by local and regional backbones into a virtual network utilizing IP protocols for access to the global information superhighway.

Figure 1 is a block diagram of the basic components of a radio transmission network.

Figure 2 is a block diagram of network components of an embodiment of the invention.

Figure 3 is a block diagram of the basic components of the network showing the connections between the components in more detail.

4, 4A and 4B are more detailed block diagrams of certain components used to form the network of the present invention.

5, 6, and 7 are flowcharts generally depicting the operation of the network of the present invention.

Figure 8 depicts a network topology variant of the invention.

Figure 9 depicts components of a converter station between buildings.

A first preferred embodiment of the present invention comprises a method and system for providing Internet services over an existing radio transmission network.

Figure 1 depicts a conventional radio transmission network. The network includes a studio 100 as the source of all transmitted radio programs. The studio 100 is connected to an audio distribution center (ADC) 110 by dual copper wires 105 . Similarly, ADC 110 is connected to a plurality of base amplifier stations (BAS) 120 . Each BAS 120 is connected to ADC 110 through its own dual copper wire 115 .

ADC 110 includes a plurality of amplifiers for receiving radio signals from studio 100 (via copper wire 105 ) and sending the amplified signals to BAS 120 . Each BAS 120 also includes amplifiers that amplify received radio signals for further downstream retransmission. More specifically, each output of BAS 120 is connected to a converter station 130 between buildings.

Each inter-building switch station (ITS) 130 includes an input for receiving signals from the BAS 120 over copper wire 125 . Each ITS 130 includes an ingress/input filter 910, a switch 920, an egress/output filter 930, and a distribution switch 940 (see FIG. 9). Each ITS 130 also includes outputs connected to a plurality of individual building converter stations (STS) 140 .

Typically, each STS 140 is associated with a single building such as an apartment complex or office building. STS 140 includes an input for receiving radio transmission signals from ITS 130 . STS 140 also includes an output connected to copper wire pair 145 . Copper wire 145 runs throughout the building to a plurality of radio jacks 150, typically one for each unit or office in the building. Each radio jack 150 is connected to a radio speaker to produce an audio signal represented by a radio signal received over the copper wire 145 .

Using this network, studio 100 broadcasts radio signals by sending radio signals over copper wires 105 to ADC 110 . The ADC 110 amplifies the received radio signal and resends the amplified signal through each pair of copper wires 115 to the corresponding BAS 120 . Each BAS 120 amplifies received radio signals and resends the amplified signals to ITS 130 over each pair of copper wires 125 . Each ITS 130 converts the signal and sends the converted signal to a plurality of STS units 140 via copper wire 135 . Each receiving STS 140 converts the signal and sends the converted signal over copper wire 145 to a plurality of radio jacks 150 . Thus, the radio signal sent by studio 100 propagates through the entire radio network to every radio socket in the network. Typically this radio signal is in the 0-10 kHz range.

To simplify the explanation, we assume that each radio socket of the radio transmission network is located in a unit house, although in the above discussion such sockets could also be in offices, individual rooms, etc. Hereafter, the term "apartment" as used herein generally refers to any location having a radio socket connected to the radio transmission network.

A preferred embodiment of the present invention utilizes the existing radio transmission network described above to provide Internet-based services to units with radio outlets. In the preferred system (see FIG. 2 ), a central switching and routing unit (A-1) 220 is installed in the structure in which the ADC 110 is installed. Unit A-1 is preferably the main point of operation for the system and is connected to the Internet 210 by high speed fiber optic line 205 . It monitors, controls and manages the quality of service and security of the entire system. It also performs switching and routing for the system; supports IP telephony, IP TV, high-speed access, and other Internet/intranet applications; provides system access to the Internet 210; and provides database services for system users and administrators . Preferred components that make up the A-1 unit are listed in Table 1 below.

Preferably, unit A-1 is connected by underground fiber optic lines 215 to a plurality of area switching and routing units (A-2) 230, each area switching and routing unit (A-2) 230 installed in the structure housing the BAS 120 middle. Each A-2 unit is the main point of operation for an area network that typically includes 60-100 residential or commercial buildings. The A-2 unit performs switching and routing for the entire area network; supports IP telephony, IP TV, high-speed access, and other Internet/intranet applications; and provides access to the rest of the system. Since each unit typically serves 60-100 buildings, the number of A-2 units 230 depends on the number of buildings in the area. Preferred components that make up the A-2 unit are listed in Table 2 below.

Each A-2 unit is connected to one or more low speed modems (LSM) 170 as shown in FIGS. 2 and 3 . Each LSM is also connected to a copper wire pair of the radio transmission network, preferably on copper wire 125 between BAS 120 and ITS 130 . The LSM receives the Internet transmitted signal from the A-2 unit and resends it on the copper wire 125 . The term "low-speed modem" only means transmission over copper wire rather than higher-speed fiber-optic lines -- there is no requirement that the transmission rate be actually lower than that over high-speed fiber-optic lines. Similarly, the term "modem" is not intended to be unduly limiting. In fact, the LSM240 is preferably a 10Base-S switch conforming to the 10Base-S protocol, rather than a "modulator-demodulator" in the traditional sense. However, those skilled in the art will recognize that a variety of different modem types (eg, including ISDN and DSL-type "modems") and transmission protocols may be used.

Signals transmitted on line 125 by LSM 240 are forwarded by ITS 130 to a plurality of STS units 140 . Each STS unit then forwards the transmitted signal to its associated building by sending the signal over copper wire 145 .

As shown in FIG. 2 , some units may include an LSM 270 connected to the radio jack 150 of the unit for receiving Internet transmissions on line 145 . Each LSM 270 is connected to a personal computer 280 . In this way, computer 280 can receive Internet-transmitted information. Likewise, computer 280 can also send Internet-transmitted information through LSM 270 because modem signals are transmitted bi-directionally over the radio transmission network without interfering with existing radio signals. This transmitted information travels through building line 145 to STS 140 . STS 140 then forwards the transmitted information to ITS 130 via line 135 . Likewise, ITS 130 forwards transmitted information over line 125 to LSM 240 . LSM 240 receives such Internet-transmitted messages from line 125 and forwards them to A-2 unit 230, which then sends these signals upstream via optical fiber 215, A-1 unit 220, and optical fiber 205 to the Internet. In the preferred embodiment, each LSM 240 is a 10Base-S switch and router and each LSM 270 is a 10Base-S interface.

Other units may include a high speed interface card HSC 260 connected between the building line 145 and the personal computer 280 . Each HSC is a network interface card that communicates between the building line 145 and the personal computer 280 . To enable such HSC cards to communicate over the Internet, each A-2 unit 230 is connected by high speed fiber optic lines 255 to a plurality of A-3 units 250, each located in a single building. Each A-3 unit 250 is connected to line 145 within the building. The A-3 unit 250 uses these existing lines to form the building's local area network.

In a preferred embodiment, HSC 260 and LSM 270 are network interfaces using 10Base-S protocol. Each HSC/LSM unit is utilized to communicate with LSM 240 or A-3 unit 250 . Which type of unit the HSC/LSM unit communicates with depends on the subscriber subscription level: HSC/LSM for high speed subscribers communicates with A-3 unit 250 and HSC/LSM for low speed subscribers communicates with LSM 240 . The A-3 unit can communicate with high-speed interface cards using 10Base-S, 100Base-T, or 1000Base-T protocols.

Each A-3 unit 250 is preferably the main point of operation within the building of a high speed local area network formed by a personal computer 280 connected to the building copper wire 145 through a high speed subscriber's HSC 260 . A-3 unit 250 performs switching and routing for all computers that are part of its local network. A-3 unit 250 is preferably connected to A-2 unit 230 by fiber optic cable 255, which is an overhead line supported by a feeder located atop the building, although ground or non-fiber optic component cables could also be used. Preferred components that make up unit A-3 are listed in Table 3 below. Figures 3, 4 and 4A depict the A-1, A-2 and A-3 units and the physical connections between their components.

Thus, for an apartment unit including the HSC card 260, through the higher speed pathways formed by the A-3 unit 250, the A-2 unit 230, and the A-1 unit 220 and their associated fiber optic cables 205, 215, and 255, the personal computer 280 may communicate via the Internet. Yet, for the unit room that only comprises LSM interface card 270 (that is: this unit room is a low-speed user), by SST140, ITS130, LSM240, A-2 unit 230 and A-1 unit 220 and their connected lines and optical cables By forming another channel, the personal computer 280 can communicate with the Internet.

The LSM units 240 and 270 preferably use the 10Base-S ^™ system (available from OLENCOM Electronics Ltd., Yokneam Illit 20692, POB 196, Israel, PO Box 196, Israel). ), or similar systems, for transmission over copper wires. Likewise, A-3 unit 250 and HSC unit 260 communicate using the same 10Base-S protocol.

The 10Base-S system provides extensions to the 10BaseT Ethernet standard network conforming to IEEE802.3. It combines DSL modulation technology with Ethernet technology. The 10Base-S system provides a point-to-point link that can transmit half-duplex or full-duplex 10BaseT Ethernet at a full rate of 10Mbps. For telephony applications, it supports simultaneous transmission of POTS or ISDN or PBX signaling and data over standard telephone-grade line infrastructure.

The 10Base-S system uses quadrature amplitude modulation (QAM). QAM modulation defines each symbol with signal amplitude and phase. 10Base-S uses the most complex QAM technology with various QAM modulations (QAM256, QAM128, QAM64, QAM32, QAM16, QAM8 and QAM4). The specific modulation is chosen according to the line specification and data rate definition. In order to achieve the performance closest to the physical limit as far as possible, the designed 10Base-S should support multiple QAMs, and keep low cost and low energy consumption. When comparing capacity calculations (calculation of physical margins), 10Base-S has a larger capacity than DMT TDD and usual QAM.

10Base-S facilitates symmetrical bi-directional data transmission over unshielded twisted copper pairs. The 10Base-S system uses frequency division duplexing (FDD) to separate downstream channels, upstream channels, and POTS, ISDN, or PBX signaling services in the frequency domain. This enables service providers to overlay 10Base-S on top of existing POTS, ISDN, or PBX signaling services without disrupting them. Both 10Base-S and POTS/ISDN/PBX services can be transmitted on the same line without interfering with each other. Encapsulates Ethernet data in a continuous stream of cells using a proprietary scheme. The system applies a self-synchronizing scrambling mechanism to the continuous non-bursty data cell stream. The scrambler is initialized to a random value that provides better decorrelation of the transmitted signal and, therefore, better FEXT performance when transmitted over multiple copper pairs. An advanced Reed-Solomon (RS) error-correcting code is also applied to the data stream, providing strong error detection and recovery capabilities. On reception, Ethernet data is reassembled from error-free cell streams. 10Base-S technology operates at a continuous raw symmetrical bidirectional data rate of 11.25Mbps. This allows Ethernet data to be transmitted full duplex at the full standard line rate of 10Mbps. This transmission overhead does not reduce the Ethernet bandwidth, therefore, the system can be used completely transparently for 10Mbps Ethernet.

The 10Base-S system can be used as a substantially point-to-point communication system. The core data pump is a blind modem that supports point-to-multipoint transmission systems. Operation in the point-to-point case does not require the use of a collision detection scheme by frequency-separating downstream data from upstream data, while supporting full-duplex operation. The actual Ethernet interface is a standard RJ-45 socket. Users can connect standard 10BaseT devices (such as Ethernet switches or Ethernet NIC cards) to 10Base-S devices using standard Ethernet cables.

Because 10Base-S transmission power and frequency are fundamentally different from radio transmission power and frequency, 10Base-S transmission on line 145 and radio transmission on the same line will not interfere with each other. More specifically, radio signals have a very low frequency range (0-10 kHz) compared to 10Base-S transmission. Further, radio signals have very high power compared to 10Base-S transmission. Therefore, when a user turns on the radio unit connected to the radio jack 150 to listen to a radio program, the speaker of the radio unit largely filters out the 10Base-S signal due to the higher frequency of the 10Base-S signal. Further, for the case where the 10Base-S signal includes frequency components within the bandwidth of the loudspeaker, since their power is small, they are not perceptibly reproduced by the loudspeaker.

Figures 4, 4A and 4B show more detailed block diagrams of the components used to form the A-1, A-2 and A-3 units and how they are connected.

FIG. 5 generally depicts the operation of the network when a single user accesses the Internet through a low speed modem 270 . In the example shown, at step 510, A-1 unit 220 receives Internet data destined for the user. Then, at step 520, the A-1 unit 220 routes the received data to the A-2 unit 230 that provides service to the area network of which the user is a member. At step 530, A-2 unit 230 receives and routes the data to LSM unit 240, which serves the building (and often other buildings) in which the subscriber is located. At step 540, LSM unit 240 receives the data and transmits the data (preferably using 10Base-S protocol) via LSM 270 (preferably a 10Base-S end user unit) over a radio transmission line via STS 140 to the user's PC 280 .

FIG. 6 generally depicts the operation of the network when a single user accesses the Internet through HSC 260 . In the example shown, at step 610, the A-1 unit 220 receives Internet data destined for the user. At step 620, A-1 unit 220 routes the data to A-2 unit 230, which provides service to the area network of which the user is a member. At step 630, A-2 unit 230 receives and routes the data to A-3 unit 250, which serves the customer's building. At step 640, A-3 unit 250 receives the data and transmits the data over radio transmission line 145 via HSC 260 to user's PC 280 using 10Base-S protocol.

In one embodiment of the network, each A-2 unit 230 is connected to multiple LSMs 240 and multiple A-3 units 250 . High-speed subscribers are connected to A-2 unit 230 through A-3 unit 250 , and copper-based narrowband subscribers are connected to A-2 unit 230 through LSM 240 . Figure 7 generally depicts the operation of such a network.

At step 710, the A-1 unit 220 receives Internet data destined for a single user. At step 720, A-1 unit 220 routes the data to A-2 unit 230, which provides service to the area network of which the subscriber is a member. At step 730, A-2 unit 230 receives data. In step 740, the A-2 unit 230 determines the identity of the user to whom the data is assigned and checks the identity of the user against the user database.

If the subscriber is a high-speed service subscriber, and therefore, is located in a building with A-3 unit 250, then at step 755, A-2 unit 230 routes the data over high-speed line 255 to A-3 unit 250, which serves the subscriber. The building in which the service is provided. At step 760, A-3 unit 250 receives data. In steps 770 and 780, the A-3 unit routes the data to the subscriber's LSM 270 over the building's radio transmission link.

Returning to step 740, if the subscriber is not a high-speed service subscriber, then at step 745, A-2 unit 230 routes the data to LSM 240, which serves the building in which the subscriber is located. At step 750, the LSM 240 receives the data and transmits the data to the subscriber's LSM 270 via the radio transmission link.

In another embodiment, when a building (such as building 235) has high-speed users and low-speed users, all Internet signals are routed from A-2 unit 230 to A-3 unit 250 of the building. This includes those signals destined for low speed users in buildings. In this embodiment, the LSM units 270 are 10Base-S units, therefore, the A-3 units 250 send Internet signals destined for low speed users directly to their LSM units 270 .

In another alternative embodiment, the A-3 unit is connected to an LSM unit (not shown), which in turn is connected to the building interior copper wire network 145 . Then, if a packet is to be sent to a low speed user, the A-3 unit receives and routes the packet to the connected LSM, and then sends the packet to the LSM unit 270 of the user. In yet another embodiment, the LSM unit connected to the A-3 unit can receive signals from the LSM unit 240 and route those signals to the connected A-3 unit. This structure has the advantage of redundancy: if the optical fiber communication line to unit A-3 is broken, high-speed users can still use the low-speed system, and if the copper wire (or LSM240) is broken, low-speed users still pass through unit A-3 Receive Internet service.

Although the present invention has been particularly shown and described with reference to preferred embodiments of the systems and methods, those skilled in the art will recognize that the present invention may be susceptible to various improvements, changes and modifications in form, detail and implementation without reference to the present invention. beyond the spirit and scope of the invention as defined by the appended claims.

For example, although the A-1, A-2, A-3, LSM, and HSC units are described here with very specific part numbers and configurations, those skilled in the art know that the functionality of each of these units can actually be controlled by a different manufacturer's Many different configuration replications for different components.

In addition, although the above embodiments mainly describe their use in radio transmission networks, those skilled in the art will appreciate that the present invention can also be used in other ways. For example, normal telephone wires also form a copper wire network to which the present invention can be applied.

Table 1: Unit A-1 Components serial number classification number illustrate 2xCatalyst6500-L2 (20x1GB: 2xLX/LH-A2, 8xSX-Red6500, 1xSX-GSR, 9-empty; 48x10/100-empty)1 WS-C6509 Catalyst 6509 rack2 WS-CDC-1300W Catalyst 6000 1300W DC power supply3 WS-CDC-1300W/2 Catalyst 6000 second 1300W DC power supply 4 WS-X6K-SUP1A-PFC Catalyst 6000 supervisor engine 1-A, 2GE, plus PFC5 WS-X6408-GBIC Catalyst 6000 8-port Gigabit Ethernet module ( Require

                                                                                                                                                                  ,

Form) 7 WS-G5486 1000BASE-SX "short-wavelength" GBIC (only multi-mode) 8 WS-X6348-RJ-45 Catalyst 6000 48 port 10/100, enhanced QOS, enhanced QOS, enhanced QOS, enhanced QOS,

RJ-45CISCO12000 GSR (2X1GB; 1xsx-Cat6500, 1XSX-CISCO7200) 1 GSR8/40 CISCO12008 GSR 40Gbps; 1GRP, 1CSC-GSR8, 1CSC-GSR8, 1CSC-GSR8, 1CSC-GSR8,

3SFC-GSR8, 1DC2 GRP routing processor, 128MB3 MEM-DFT-GRP/LC-128 default 128MB GRP and L.C. program/routing memory

(1x128MB)4 MEM-GRP-FL20 20MB PCMCIA Flash 5 GRP/R GSR Route Processor, Redundancy Option 6 MEM-DFT-GRP/LC-128 G .RP/LC Memory Default 128MB.

(1x128MB)7 MEM-GRP-FL20 20MB PCMCIA Flash Memory8 PWR-GSR8-DC/2 Cisco12008GSR Redundant DC Power Supply (2 DC Power Supplies)9 S120Z-12.0.8S X Cisco 12008 H GE-S/L Series IOS Service Provider -SC= GSR 12008 single-port Gigabit Ethernet line card, backup

                                                                                                                                           

Standard Cisco7206 VXR (1x1GB/SX-GSR, 1xPOS-OC-3)1 Cisco7206 VXR/NSE-1 7206VXR with NSE-1 and I/O with FEE-1

Controller 2 PWR-7200-DC CISCO 7200 DC power supply, alternate 3 PWR-7200/2-DC CISCO 7200 dual DC power supply, sample 4 S72C-12101E CISCO 7200 series iOS IP5 FR-WPP72 CISCO iOS 7200 series WAN group WAN packet agreement / Netstream license 6 MEM-I/O-FLC20M Cisco 7200I/O PCMCIA flash memory, 20MB optional 7 MEM-SD-NPE-128MB for NPE-300/NPE-225/NPE- in 7200 series

                                                                                                         

Port Adapter 9 PA-MC-8E1/120 8-port multi-channel E1 port adapter with G.703

                                                                                                                           

CISCOAS5300 (60X Digital Talk) 1 AS5300 AS5300 Dialing Relief 2 AS53-DC-RPS = dual DC power supply, AS5300, spare parts 3 S53CVP-12.0.5T CISCO AS5300 series iOS IP speaker +4 AS53-E1-60VOXD 60 phonetic sound channels and 4 E1+ cards, upgradeable to 120

Channel 5 VC-SWA-4.10 Voice card SW, all codes include: G.711, G.729, G.726,

G.723.1 and Fax Console Server 1 AS2511-RJ Cisco Access Server 2511-RJ Ethernet/Serial/16, Iso

                                                                                                             Step 2 

CV5, TD5, CFM1, +Doc2 NFC-SOSU-3.0 Solaris Network Flow Collector, including Network Data Analyzer 3.03 CWVM-2.0-SOL CW2000 Voice Management 2.0 Solaris, including: SW and

Doc4 CNR-3.5 Cisco Network Registrar 3.5, base, 1250 nodes, all

Platform 5 J1255AA HP OV MNM6.0 2506 A23-ULD1-9L-512AQ 3D Generator for Solaris LTU, Series 3 Graphics, 18.2-GB 10K RPM

Internal Drive 7 X7124A 24" Color Display 8 Ultra60 and 80 Manual Controls Mounted in System Rack

Ejected Floppy Drive9 X6166A 32x Internal CD-ROM Drive 10 X6282A 12GB 4mm DDS-3 Internal Tape Drive 11 X3860A s English 6 SCS-2 Fast Narrow Cable for desktop connection to X Option and Ultra2 (2 9 ari 9 ID Version 12 SOLMS-26 media software

Package, Export Restricted Edition 13 @XRUSSIAN-CC International Type 5 Country Package, Russia Cache System 1 R28 GB7 NCE Cache RaQ2, 256MG, 12.7GB, European Cable Table 2 A-2 Unit Assembly serial number classification number illustrate Catalyst6500-L3 (2xLX/LH, 1GB-A1, 48x10/100-A3) 1 WS-C6509 Catalyst 6509 Rack 2 WS-CDC-1300W Catalyst 6000 1300W DC Power Supply 3 WS-CDC-1300W/2 Catalyst 6000 2nd 1300W DC Power Supply 4 WS-X6K-SUP1A-MSFC Catalyst 6000 Supervisor Engine 1-A, 2GE, plus MSFC&

PFC5 MEM-MSFC-128MB Catalyst 6000 MSFC memory, 128MB DRAM

                                                                                                       , 

Select 7 SC6MSFCC-12.0.7XE Catalyst 6000 MSFC iOS flash map-IP8 WS-X6K-S1A-MSFC/2 Catalyst 6000 redundancy management 1A, 2GE, W/MSFC &

PFC9 MEM-MSFC-128MB Catalyst 6000 MSFC memory, 128MB DRAM

MEM-C6K-FLC24M Catalyst 6000 management PCMCIA flash memory card, 24MB backup

Select 11 SC6MSFCC-12.0.7XE Catalyst 6000 MSFC iOS flash map-IP12 WS-G5486 1000BASE-LH "long-range" GBIC (single mode or multi-mode

Catalyst 6000 48 ports 10/100, enhanced QoS,

RJ-4514 NC316BU-16/DC has a 16-meter frame with a built-in 48 DC power supply 15 NC316-16RPSDC NC316BU-16 redundant power supply (-48V DC) 16 EM316nm SNMP management module with 1 10BASE-T port 17 EM316F/ S1 100Base-TX to 100Base-FX (SM: 1310nm; 0-

25km; DSC) Table 3 unit A-3 components serial number classification number illustrate Catalyst2924(23x10/100; 1X100-A-2)1 WS-C2924-XL-EN 24-port 10/100 switch (enterprise version)2 EM316F-S1 100Base-TX to 100Base-FX (SM: 1310nm; 0-

25km; DSC)3 NC316BU-1HP/AC Single-slot high-power machine with internal 90-240V AC power supply

shelf

Claims (23)

1. A method for providing Internet services, comprising the steps of: a) receive Internet data destined for end users; b) sending said data to said end user via a modem connected to a radio transmission network. 2. The method of claim 1, wherein said step of transmitting said data does not adversely affect radio signals transmitted over said radio transmission network. 3. A method for providing Internet-related services, comprising the steps of: a) receiving Internet data destined for the first end user; b) determining the level of network service authorized to said first end user; c) routing said data to said first end user over a high speed line if said first end user is entitled to a high speed network service; and d) routing said data to said first end user via modem-to-modem service if only low speed network service is authorized to said first end user. 4. The method of claim 3, wherein the modem-to-modem service is performed over a radio transmission line. 5. The method of claim 3, wherein said high-speed network service is performed partly through optical fiber lines and partly through radio transmission lines. 6. The method of claim 5, wherein the high-speed network service is performed in a frequency range that does not significantly interfere with radio broadcasts over the radio transmission line. 7. The method of claim 3, wherein if the first end user is not authorized for high speed network service, but within the building of the first end user, there is a second end user authorized for high speed network service service, the data is routed over a high-speed line to the first end user's building and then routed over modem-to-modem service to the first end user. 8. The method of claim 7, wherein the modem-to-modem service is performed over a radio transmission line. 9. The method of claim 8, wherein the modem-to-modem service is performed in a frequency range that does not significantly interfere with radio broadcasts over the radio transmission line. 10. A system for providing Internet-related services, comprising: a) one or more central switching and routing units; b) one or more regional switching and routing units, each of said regional switching and routing units being connected to at least one central switching and routing unit; c) a first group of low speed modem units, each of said low speed modem units in said first group being connected to at least one area switching and routing unit; d) a second set of low-speed modem units, each of said low-speed modem units in said second set being connected to one or more low-speed modem units in said first set of low-speed modem units via a copper wire network, and the Each of said low speed modem units in said second group is connected to an end user's computer. 11. The system of claim 10, wherein at least one of the one or more regional switching and routing units is connected to at least one central switching and routing unit by an optical fiber cable. 12. The system of claim 10, wherein the first set of low speed modem units comprises at least one 10Base-S switch. 13. The system of claim 10, wherein the second set of low speed modem units comprises at least one 10Base-S switch. 14. The system of claim 10, wherein the copper wire network is a radio transmission network. 15. A system for providing Internet-related services, comprising: a) one or more central switching and routing units; b) one or more regional switching and routing units, each of said regional switching and routing units being connected to at least one central switching and routing unit; c) one or more local switching and routing units, each of said local switching and routing units being connected to at least one regional switching and routing unit, wherein each local switching and routing unit is connected by a copper wire line to one or more end user computers. 16. The system of claim 15, wherein the copper wire line is a radio transmission line. 17. The system of claim 15, wherein at least one of the one or more regional switching and routing units is connected to at least one central switching and routing unit by a fiber optic cable. 18. The system of claim 15, wherein at least one of the one or more local switching and routing units is connected to at least one area switching and routing unit by a fiber optic cable. 19. The system of claim 15, wherein at least one of the one or more local switching and routing units communicates with one or more end user computers using 10Base-S protocol. 20. A system for providing Internet-related services, comprising: a) one or more central switching and routing units; b) one or more regional switching and routing units, each of said regional switching and routing units being connected to at least one central switching and routing unit; c) one or more local switching and routing units, each said local switching and routing unit being connected to at least one regional switching and routing unit; d) a first group of low speed modem units, each of said low speed modem units in said first group being connected to at least one area switching and routing unit; e) a second set of low speed modem units, each of said low speed modem units in said second set being connected to an end user's computer. f) A set of high speed interface card units, each of said set of high speed interface card units being connected to a local switching and routing unit and an end user's computer. 21. The system of claim 20, wherein said first set of low speed modem units comprises at least one 10Base-S switch. 22. The system of claim 20, wherein the second set of low speed modem units comprises at least one 10Base-S switch. 23. The system of claim 20, wherein the set of high-speed interface card units includes at least one 10Base-S switch.

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