152-388-100-02, Issue 2

Appendix E - Abbreviations

 

 

APPENDIX E - ABBREVIATIONS

A

ACO:

Alarm Cutoff

AIS:

Alarm Indication Signal

ALM:

Alarm

AMI:

Alternate Mark Inversion

AWG:

American Wire Gauge

B

B8ZS: Bipolar with 8-Zero Substitution

B8ZSS: B8ZS Monitored Seconds

BER: Bit Error Rate

BPV: Bipolar Violation

BPVT: Bipolar Violation Transparency

C

CI: Customer Installation

CLEI: Common Language Equipment Identifier

CLOC: Customer Local Loopback

CO: Central Office

CPE: Customer Premises Equipment

CRC: Cyclical Redundancy Check

CREM: Customer Remote Loopback

CSA: Carrier Service Area

CV: Code Violation

D

DBER: DS1 Bit Error Rate

DDS: Digital Data Service

DLC: Digital Loop Carrier

DS1: Digital Signal, level 1

DSX-1:DS1 Cross-Connect Frame

E

ECI:

Equipment Catalog Item ,

ES:

Errored Seconds ,

ESD:

Electrostatic Discharge

ESF:

Extended SuperFrame

ES-L:

Errored Seconds - Line

ES-P:

Errored Seconds - Path

G

GNLB: Generic Loopback

H

H2TU-R:HiGain Remote Unit

HBER: HDSL2 Bit Error Rate

HCDS: High Capacity Digital Service

HCS: HiGain Card Shelf

HDSL2: High-bit-rate Digital Subscriber Line 2

HMS: HiGain Management Shelf

HMU: HiGain Management Unit

I

ID:

Identification

ILR:

Intelligent Line Repeater

IN:

Transmit

IOR:

Intelligent Office Repeater

IR:

Intelligent Repeater

L

LA: Loop Attenuation ,

LED: Light Emitting Diode

LOS: Loss of Signal

LOSW: Loss of Sync Word

LOSWS: Loss of Sync Word Second

LPF: Line Power Feed

M

MSEC: Monitored Seconds

N

NI: Network Interface

NID: Network Interface Device

NLOC: Network Local Loopback

NMA: Network Management and Administration

NREM: Network Remote Loopback

NVRAM: Non-Volatile Random Access Memory

O

OPTIS: Overlapped PAM Transmission with Interlocking Spectra

OUT: Receive

P

PAM: Pulse Amplitude Modulation

PRM-FE:Performance Report Messaging - Far End

PRM-NE:Performance Report Messaging - Near End

PWRF: Power Feed

R

RDA: Remote Disconnect Alarm

RLOS: Remote Loss of Signal

S

SES: Severely Errored Seconds ,

SES-L:Severely Errored Seconds - Line

H2TU-C-388 List 1

June 6, 2000

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