Smc-networks SMC7500A/VCP Manual de usuario descargar pdf (Pagina 15)

VDSL T

ECHNOLOGY

VDSL Technology

VDSL (Very High Bit-Rate Digital Subscriber Line) is at the high-end of

the DSL technologies, offering the best combination of fiber optics and

copper to provide high-speed broadband Internet access. VDSL’s primary

application is in providing a broadband data service to multi-tenant

residential or commercial buildings. In this implementation, fiber optic

cable carries data from a telephone company’s central office to the

building; then the installed telephone copper wires take the data and

deliver it to individual units within that building.

VDSL provides high-speed Internet access over existing phone lines by

making use of previously unused frequency bandwidth above the voice

band. By placing VDSL signals above the frequency of the voice signal, a

VDSL service can coexist on the same line with other telephone services.

VDSL can operate symmetrically, providing the same data rate in both

directions, or asymmetrically, providing a higher data rate in the

downstream (receive) direction than in the upstream (transmit) direction.

ISP

(Internet)

Central Office

(PSTN)

Punch Down

Blocks /

Patch Panels

PBX

Telephone/Fax

Telephone

VDSL CPE

VDSL

Concentrators

Ethernet

Switch

ES3526F

Telephone Line from Central Office

Fiber Optic Link to ISP

Local Servers

(Locally Hosted Services,

Video Servers, Billing)

Existing Phone

Lines to Clients

Multi-dwelling/Multi-tenant Building

Floor 2

Floor 1

Rooms/Clients

VDSL Lines

Phone Lines

Ethernet

Links to Switch

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 33 34

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Smc-networks SMC7500A/VCP Manual de usuario Pagina 15

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