ZyXEL Communications VES-1000 Series, User Manual, Page: 51 / 227

VES-1000 Series Ethernet Switch
Port Setup 6-1
Chapter 6
Port Setup
This chapter explains how to configure individual ports on the various line cards.
6.1 Port Setup Overview
The web configurator allows you to configure settings for individual ports on the card.
6.2 Flow Control
IEEE 802.3x flow control manages the sending of traffic so the sending device does not transmit more than the
receiving device can process. This helps prevent traffic from being dropped and having to be resent.
6.3 VDSL Mode
Each VDSL mode operates in a different frequency band allocation, resulting in different upstream and downstream
speeds. The following table summarizes transmission speeds and frequency ranges for each VDSL mode supported
by the VES-1000 Series switch.
Table 6-1 VDSL Mode, Frequency Ranges and Speeds
VDSL
MODE
FREQ.
RANGE (HZ)
LINE SPEED (MBPS)
10 BASE-S
Upstream 4.0M 7.9M 1.56 6.25 9.38 12.50 18.75
Downstream 900K 3.0M 4.17 6.25 8.33 12.50 16.67
ANSI/ETSI
PLAN 998
Upstream 4.0M 5.0M 1.56 3.13 6.25
Downstream 900K 3.0M 4.17 6.25 8.33 12.50 16.67
ETSI PLAN
997
Upstream 4.0M 5.0M 1.56 3.13 6.25
Downstream 900K 2.7M 4.17 6.25 9.38 12.50
SPECIAL
MODE
Upstream 4.0M 7.9M 0.78 1.04 1.17 1.56 2.08 3.12 4.16 4.68 6.25 8.33 9.37 12.5 18.75
Downstream 900K 3.0M 0.78 1.04 1.17 1.56 2.08 3.12 4.16 4.68 6.25 8.33 9.37 12.5 16.66