Lucent Technologies 7820-0657-001 User Manual

Page 24

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Viewing configuration information

3-4

DSLPipe DSU (SDSL) User’s Guide

V35

Indicates

OFF_line

or

ON_line

Data Bit Polarity

Indicates

Norm

(Normal) or

Rev

(Reverse). The default is

Rev.

This means that the transmitter inverts the data polarity

before sending data.

Sign/Magn Bit Seq

Indicates

Norm

(Normal) or

Rev

(Reverse). The default is

Rev

. This means that the magnitude bit is followed by the sign

bit.

Noise Margin

Shows the noise margin value (in dB). If the noise margin is
less than -5dB, the SDSL line is terminated.

Data Rate

Shows the current transmission rate

DSL ch Data

Encode/Decode

Shows one of the following:

NRZ

,

NRZI

,

FMO

,

FM1

, or

Manchester

. The default is NRZ. This means that signal

transmissions go from positive to negative without ever
assuming a zero value (Non-Return to Zero).

V.35 ch Data

Encode/Decode

Shows one of the following:

NRZ

,

NRZI

,

FMO

,

FM1

, or

Manchester

. The default is NRZ. This means that signal

transmissions go from positive to negative without ever
assuming a zero value (Non-Return to Zero).

DSL ch Rx CRC

Shows either

Enable

or

Disable

. The default is

Enable

.

This means that the receiver will check for CRC over the SDSL
line.

DSL ch Tx CRC

Shows either

Enable

or

Disable

. The default is

Enable

.

This means that the CRC is appended to the end of the frame
when data is sent over the SDSL line

.

V.35 ch Rx CRC

Shows either

Enable

or

Disable

. The default is

Enable

.

This means that the receiver will check for CRC over the V.35
line.

Table 3-1. Fields in the DSLPipe status window (Continued)

Fields

Description

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