ZyXEL Communications P-660H-T1 v3s, User Manual

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Chapter 6 WAN Setup
P-660H-T1v3s User’s Guide
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The following table describes the labels in this screen.
Table 12 Network > WAN > Internet Access Setup
LABEL DESCRIPTION
Line
ADSL Mode
Select the modulation supported by your ISP.
Use Auto Sync-Up if you are not sure which mode to choose from.
The P-660H-T1v3s dynamically diagnoses the mode supported by the
ISP and selects the best compatible one for your connection.
Other options are: ADSL2+, ADSL2, G.DMT, T1.413 and G.lite.
ADSL2+: This mode has a downstream rate of 24 Mbit/s and an
upstream rate of 1.0 Mbit/s.
ADSL2: This mode has a downstream rate of 12 Mbit/s and an
upstream rate of 1.0 Mbit/s.
G.DMT: This mode has a downstream rate of 12 Mbit/s and an
upstream rate of 1.3 Mbit/s.
T1.413: This mode has downstream rate of 8 Mbit/s and an upstream
rate of 1.0 Mbit/s.
G.lite: This mode has a downstream rate of 1.5 Mbit/s and an
upstream rate of 0.5 Mbit/s. This type of DSL does not use splitter.
Annex Type Select the annex type supported by your ISP. An annex defines how
ADSL works under certain conditions.
Options are:
Annex A - This is ADSL over POTS (Plain Old Telephone Service),
most commonly found in North America. It uses a frequency of 138
kHz.
Annex A/L - This is Reach Extended ADSL2 (READSL2), allowing an
ISP to extend the distance data can be transmitted over Annex A by
up to 7 kilometers. Because it has high power requirements that may
result in audible cross-talk over lines, it sees limited deployment.
Annex M - This is an optional modification of Annex A that doubles
the DSL device’s upstream bits. It also shifts the frequency of Annex A
up to 276 kHz.
Annex A/L/M-This is a combination of the A, L and M annexes.
General
Mode
Select Routing (default) from the drop-down list box if your ISP gives
you one IP address only and you want multiple computers to share an
Internet account.
Select Bridge when your ISP provides you more than one IP address
and you want the connected computers to get individual IP address
from ISP’s DHCP server directly. If you select Bridge, you cannot use
Firewall, DHCP server and NAT on the P-660H-T1v3s.