Chapter 1 Introducing the ZyXEL Device
P-660HW-Tx v3 User’s Guide
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• Back up the configuration (and make sure you know how to restore it). Restoring an
earlier working configuration may be useful if the device becomes unstable or even
crashes. If you forget your password, you will have to reset the ZyXEL Device to its
factory default settings. If you backed up an earlier configuration file, you would not have
to totally re-configure the ZyXEL Device. You could simply restore your last
configuration.
1.5 Features
High Speed Internet Access
The ZyXEL Device is compatible with the ADSL/ADSL2/ADSL2+ standards. Maximum data
rates attainable for each standard are shown in the next table.
" If your ZyXEL Device does not support Annex M, the maximum ADSL2/2+
upstream data rate is 1.2 Mbps. ZyXEL Devices which work over ISDN do not
support Annex M.
" The standard your ISP supports determines the maximum upstream and
downstream speeds attainable. Actual speeds attained also depend on the
distance from your ISP, line quality, etc.
Triple Play Service
The ZyXEL Device is a Triple Play Gateway, capable of simultaneously transferring data,
voice and video over the Internet. The Gateway possesses advanced Quality of Service (QoS)
features to provide a high standard of Triple Play delivery.
Zero Configuration Internet Access
Once you connect and turn on the ZyXEL Device, it automatically detects the Internet
connection settings (such as the VCI/VPI numbers and the encapsulation method) from the
ISP and makes the necessary configuration changes. In cases where additional account
information (such as an Internet account user name and password) is required or the ZyXEL
Device cannot connect to the ISP, you will be redirected to web screen(s) for information input
or troubleshooting.
Table 2 ADSL Standards
DATA RATE STANDARD UPSTREAM DOWNSTREAM
ADSL
832 kbps 8Mbps
ADSL2
3.5Mbps 12Mbps
ADSL2+
3.5Mbps 24Mbps
