ZyXEL Communications Prestige 630-C series Guía de usuario descargar pdf (Pagina 12)

Prestige 630 ADSL USB Modem

xii About ADSL

About ADSL

Your Prestige 630 ADSL USB Modem

Congratulations on the purchase of your new modem! Your modem combines the super-fast speed of state-

of-the-art ADSL (Asynchronous Digital Subscriber Line) technology with the ease of setup and operation

facilitated by a Plug and Play USB (Universal Serial Bus) interface.

About ADSL

(ADSL) technology provides high-speed data access across regular telephone or ISDN lines by making use

of previously unused high-frequency bandwidth. ADSL is asymmetric in the sense that it provides a higher

downstream data rate transfer (up to 8Mbps), than in the upstream transfer (up to 832 Kbps). Asymmetric

operation is ideal for typical home and small office use where files and information are downloaded more

frequently than uploaded.

Advantages of ADSL

1. ADSL provides a private (unlike cable telephone and modem services where the line is shared),

dedicated and secure channel of communications between you and your service provider.

2. Because your line is dedicated (not shared), transmission speeds are not affected by other users. With

cable modems, transmission speeds drop significantly as more users go on-line because the line is

shared.

3. ADSL is "always on" (connected). This means that there is no time wasted dialing up the service several

times a day and waiting to be connected; ADSL is on standby, ready for use whenever you need it.

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ZyXEL Communications Prestige 630-C series Guía de usuario Pagina 12