What Is Adsl - ZyXEL Communications P630 User Manual

Adsl usb modem
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Prestige 630 ADSL USB Modem
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
Asymmetric Digital Subscriber Line (ADSL) technology provides high-speed data access across regular
phone wire (copper wires) by making use of previously unused bandwidth above the voice band frequency.
By placing the ADSL signal above the frequency of voice signals, ADSL service is able to coexist on the
same line with your telephone service. ADSL is asymmetric in the sense that it provides a higher downstream
data transfer rate (receive) than upstream data transfer rate (transmit). 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 transforms plain old telephone lines into a high-speed conduit for data, information,
entertainment and more while simultaneously allowing you to use your telephone - this provides
enormous advantages at home and at work.
2. ADSL provides affordable high-speed remote access to the Internet, corporate networks and on-line
services over ordinary phone lines.
! Over 100 times faster than 56 Kbps modems.
! 70 times faster than 128 Kbps ISDN modems.
3. ADSL enables the use of real-time, interactive multimedia and broadcast-quality video for services such
as collaborative computing, video conferencing, distance learning and video-on-demand.
4. ADSL provides a private, dedicated and secure channel of communications (unlike cable telephone and
modem services where the line is shared) between you and your service provider.
5. 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.
6. ADSL is "always on" (connected) - just like your telephone. This means that there is no time wasted
dialing up the service several times a day and waiting to be connected; ADSL service is always on
standby, ready for use whenever you need it.
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What is ADSL?

What is ADSL?

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