ZyXEL Communications Prestige 642R Series - Manual (Page 24)

Prestige 642R Series ADSL Router
xxiv What is DSL?
6. ADSL provides telcos with the ability to offer a private, secure channel of communications between
the consumer and the service provider.
7. Data travels along the customers own line, unlike cable telephone and modem services where the line is
shared with others
8. Because it is one customer's dedicated line, transmission speeds are not affected by other users going
on-line. With cable modems, transmission speeds drop significantly as more users go on-line
9. ADSL is "always on" and connected, just like a standard telephone. There is no time wasted dialing up
the service several times a day and waiting to be connected; ADSL is on standby, waiting ready for use
whenever your customer is ready.
10. Every major service provider has conducted trials and proven that the technology works. Today,
service providers are rolling out ADSL services worldwide, with widespread deployment expected. In
support of this market, a large number of major equipment vendors are shipping second and third-
generation products offering higher performance and lower costs.
11. ADSL-based networks are well suited for carrying ATM traffic, thus guaranteeing ADSL technology
for decades to come.
12. ADSL provides the communication bridge into the next century without adding new infrastructure,
costly outside plant additions and reinvestment.
Advantages to the End User
1. ADSL transforms plain old telephone lines into a high speed conduit for data, information,
entertainment and more. And while it is doing that, you can use your telephone for normal
conversations at the same time. This provides enormous advantages whether at home or at work.
2. ADSL provides affordable high-speed remote access to the Internet, corporate networks and on-line
services over ordinary phone lines.
¾
Nearly 300 times faster than 24.4 Kbps modems
¾ Over 100 times faster than 56 Kbps modems
¾ 70 times faster than 128 Kbps ISDN
For example, if there were no constraints of the Internet backbone or if fast servers were located in every
telephone central office, an ADSL modem could download the entire Encyclopedia Britannica to a user's
laptop in 16.6 minutes, compared to 6.4 days using a typical modem speed of 14,400 bps.
3. ADSL enables the use of real-time, interactive multimedia and broadcast-quality video for such new
services as collaborative computing, video conferencing, distance learning and video-on-demand.
4. ADSL gives you the ability to have both voice and data services in use simultaneously and all over one
phone line. Both residential and business properties around the world are already running out of spare
lines on existing installed telephone cables so effectively doubling your capacity in this way is a real
benefit.
5. ADSL provides a private, secure channel of communications between you and the service provider.
6. Your data travels along you own line, unlike cable telephone and modem services where the line is
shared with others.
7. Because it is your own dedicated line, transmission speeds are not affected by other users going on-
line. With cable modems, transmission speeds drop significantly as more users go on-line.