ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance

DLP-531

Page 4 of 7

Table 531-1. HLXC Configuration Fields, continued

FIELD

TYPE

OPTIONS

DESCRIPTION

DEFAULT

HLXR T1 Line Code

Toggle

AMI

Alternate Mark Inversion

AMI

 

 

 

 

 

 

 

B8ZS

Bipolar Eight-Zero Substitution

 

 

 

 

 

 

 

 

AUTO

Specifies that the T1 line code transmitted by the

 

 

 

 

HLXR will match the line code received by the

 

 

 

 

HLXR.

 

 

 

 

 

 

HLXR LBO Setting*

Toggle

UNIT SWITCH

Defaults to the Line Buildout hardware

Version C HLXC:

 

 

 

configuration settings on the HLXR.

UNIT SWITCH

 

 

 

 

 

 

 

0.0 dB, 7.5 dB, 15.0

Sets the LBO in decibels for the HLXR.

Version E and

 

 

dB, or 22.5 dB

 

Version D HLXC:

 

 

 

 

0.0 dB

 

 

 

 

 

Loop Power Setting*

Toggle

UNIT SWITCH

Defaults to the Loop Power hardware

Version C HLXC:

 

 

 

configuration settings on the Version C HLXC

UNIT SWITCH

 

 

 

only. Refer to DLP 516 for more information

Version E and

 

 

 

about the Version C HLXC’s unit switch.

Version D HLXC:

 

 

 

 

ENABLED

 

 

 

 

 

 

 

ENABLED

When loop powering is on and an HRX is not

 

 

 

 

connected to the HLXC, –130 VDC span power is

 

 

 

 

supplied over the HDSL loops by the HLXC.

 

 

 

 

When loop powering is on and an HRX is

 

 

 

 

connected to the HLXC, ±130 VDC power is

 

 

 

 

supplied over the HDSL loops. ENABLED must

 

 

 

 

be selected if an HRX is used.

 

 

 

 

 

 

 

 

DISABLED

No loop power is supplied. A D1 HLXR is the

 

 

 

 

only HLXR with a local powering option. All

 

 

 

 

other HLXR modules must be loop powered.

 

 

 

 

 

 

Loop 2 Operation‡*

Toggle

UNIT SWITCH

Defaults to the Loop 2 hardware configuration

Version C HLXC:

 

 

 

settings on the Version C HLXC.

UNIT SWITCH

 

 

 

 

 

 

 

ENABLED

Channels 1 - 12 are transmitted on Loop 1 and

Version E and

 

 

 

channels 13 - 24 are transmitted on Loop 2.

Version D HLXC:

 

 

 

 

ENABLED

 

 

 

 

 

 

 

DISABLED

Single-loop operation is enabled by blocking 12 of

 

 

 

 

the 24 DS0 channels (13 - 24) within the DS1

 

 

 

 

signal. Single-loop operation is used primarily

 

 

 

 

when only one loop is available to provide service.

 

 

 

 

 

 

*Note: HLXC and HLXR Switch Settings (HLXC DSX-1 EQ, HLXR LBO, Loop Power, Loop 2 Operation, and HLXR Simplex Power) of the module being configured are displayed at the bottom of the screen.

‡Note: The Version D and later HLXC module can be provisioned to provide fractional T1 service by deactivating one of the HDSL loops (Loop 2) or by selectively blocking specified channels. See the DS0 Channel and Blocked Channel Pattern fields.

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© 2000, ADC Telecommunications, Inc.