Allied Telesis AT-MC606 VDSL Configuration DIP Switch Descriptions

AT-MC606 VDSL Network Extender Installation Guide

The front panel VDSL Configuration DIP switches are shown in Figure 4

Figure 4. VDSL Configuration DIP Switches

VDSLConfigurationDIP SwitchDescriptions

The SCBR/PROV (Left) switch defines the function of the AT-MC606 as

either a Subscriber or a Provider unit. The Subscriber (SCBR) position is

selected when the AT-MC606 is used at the end point of the coaxial VDSL

line where the Ethernet lines are distributed to the end-user. The Provider

(PROV) position is selected when the AT-MC606 is used as the source for

the coaxial VDSL line. Normally, two AT-MC606’s work together in tandem

- one as a Subscriber unit and the other as a Provider unit.

The FAST/INTL (Left Center) switch is used when noise compensation is

required. If the coaxial VDSL line is operating in a relatively low noise

environment, the data link and data transmission are usually reliable. The

FAST position is recommended in this case. This operating mode has the

advantage of short latency times - usually less than 1 ms.

You will want to select the INTL (Interleaved) position if you notice that the

VDSL link is being repeatedly dropped or data is being lost, excessive

noise bursts on the line may be the cause. With the Interleaved selection,

the transmitted data is combined or interleaved with data correction code.

This combination reduces the data errors, packet losses and loss of sync

caused by a noisy environment. However, because the additional data

correction code is added to the data stream, the overall transmission

latency will increase and is usually less than 6 ms. The overall effect of this

setting is more reliable data transmissions in a noisy environment.

ASYMFASTSCBR 6dB

SYM

INTL

PROV 9dB

VDSL CONFIG

1590A