Getting To Know Your Zyxel Device; Introducing The Zyxel Device; Table 1 Adsl Standards - ZyXEL Communications P-661H Series User Manual

C
H A P T E R
Getting To Know Your ZyXEL
This chapter describes the key features and applications of your ZyXEL Device

1.1 Introducing the ZyXEL Device

The ZyXEL Device is an ADSL2+ gateway that allows super-fast, secure Internet access over
analog (POTS) or digital (ISDN) telephone lines (depending on your model).
The ZyXEL Device is compatible with the ADSL/ADSL2/ADSL2+ standards. Maximum data
rates attainable for each standard are shown in the next table.

Table 1 ADSL Standards

DATA RATE STANDARD
ADSL
ADSL2
ADSL2+
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.
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.
P-661H/HW Series User's Guide
UPSTREAM DOWNSTREAM
832 kbps 8Mbps
3.5Mbps 12Mbps
3.5Mbps 24Mbps
1
Device
.
33