ZyXEL Communications ALC1224, User Manual

Page: 45 / 136

ALC1224 User’s Guide
ADSL Port Setup 3-7
Table 3-4 Edit Profile
LABEL DESCRIPTION
Max SNR (db) Type the maximum upstream signal to noise margin (0-31 dB).
Min SNR (db) Type the minimum upstream signal to noise margin (0-31 dB). Configure the minimum
upstream signal to noise margin to be less than or equal to the maximum upstream signal
to noise margin.
Target SNR (db) Type the target upstream signal to noise margin (0-31 dB). Configure the target upstream
signal to noise margin to be greater than or equal to the minimum upstream signal to noise
margin and less than or equal to the maximum upstream signal to noise margin.
Downstream The following parameters relate to downstream transmissions.
Max Rate (Kbps) Type a maximum downstream transfer rate (32 to 25000 Kbps) bps for this port. Configure
the maximum downstream transfer rate to be greater than the maximum upstream transfer
rate.
Min Rate (Kbps) Type the minimum downstream transfer rate (32 to 25000 Kbps) for this port. Configure the
minimum downstream transfer rate to be less than the maximum downstream transfer rate.
Latency Delay(ms) Configure this field when you set the Latency Mode field to interleave . Type the number
of milliseconds (1-255) of interleave delay to use for upstream transfers. It is
recommended that you configure the same latency delay for both upstream and
downstream.
Max SNR (db) Type the maximum downstream signal to noise margin (0-31 dB).
Min SNR (db) Type the minimum downstream signal to noise margin (0-31 dB). Configure the minimum
downstream signal to noise margin to be less than or equal to the maximum downstream
signal to noise margin.
Target SNR (db) Type the target downstream signal to noise margin (0-31 dB). Configure the target
downstream signal to noise margin to be greater than or equal to the minimum
downstream signal to noise margin and less than or equal to the maximum downstream
signal to noise margin.
Apply Click Apply to save your changes.
Reset Click Reset to begin configuring this screen afresh.
3.9 IEEE 802.1x Authentication Introduction
IEEE 802.1x is an extended authentication protocol
3
that allows support of RADIUS (Remote Authentication Dial
In User Service, RFC 2138, 2139) for centralized user profile and accounting
4
management on a network RADIUS
server. Specify the RADIUS server on the management switch card.
3
At the time of writing, only Windows XP and Windows 2000 with service pack four of the Microsoft operating systems
supports it. See the Microsoft web site for information on other Windows operating system support. For other operating
systems, see its documentation. If your operating system does not support IEEE 802.1x, then you may need to install IEEE
802.1x client software.