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

 

 

 

TAP-102

 

 

 

Page 4 of 11

 

Table 102-1. DS1 Mon Type Descriptions, continued

 

 

 

 

 

MON TYPE

MEANING

LOCATION

DESCRIPTION

 

UASP

Unavailable Second

NEND

A count of second(s) in which the DS1 signal is not

 

 

Path

 

available. A signal becomes unavailable upon the

 

 

 

 

completion of ten consecutive SESPs. A signal

 

 

 

 

becomes available again at the completion of ten

 

 

 

 

consecutive seconds with no SESPs. When a path is

 

 

 

 

unavailable, no other PM counts are maintained.

 

 

 

 

 

 

FCP-FE

Failure Count Path

FEND

A count of Loss Of Frame (LOF) or Remote Alarm

 

 

 

 

Indication (RAI) failures within the interval. This is

 

 

 

 

also called a Yellow alarm. A failure is counted when

 

 

 

 

the failure condition transitions from OFF to ON.

 

 

 

 

Failure count is independent of the duration (in

 

 

 

 

seconds) of the failure condition.

 

 

 

 

 

 

ESL-FE

Errored Second Line

FEND

A second in which there occurred one or more BPVs, one

 

 

 

 

or more EXZs, or one or more LOS defects. Derived

 

 

 

 

from Line Code violation indicator in the PRM.

 

 

 

 

 

 

CVP-FE

Code Violation Path

FEND

Count of CRC errors in ESF format. Derived from

 

 

 

 

PRM GBIT (G1 – G6) indicators.

 

 

 

 

 

 

SEFSP-FE

Severely Errored

FEND

Derived from PRM Severely Errored Framing Event

 

 

Framing Second Path

 

(SE).

 

 

 

 

 

 

ESP-FE

Errored Second Path

FEND

This is a second in which there occurred one or more

 

 

 

 

CVP errors, one or more SEF defects, or one or more

 

 

 

 

AIS defects. Derived from PRM G1 - G6, SE, or Slip

 

 

 

 

Event (SL) indicator, or the occurrence of an RAI

 

 

 

 

failure.

 

 

 

 

 

 

SESP-FE

Severely Errored

FEND

This is a second in which there occurred more than

 

 

Second Path

 

some user-specified value of CVP errors, one or more

 

 

 

 

SEF defects, or one or more AIS defects.

 

 

 

 

 

 

CSSP-FE

Controlled Slip

FEND

A second in which one or more controlled frame slips

 

 

second Path

 

occurred. Derived from PRM SL indicator.

 

 

 

 

 

 

UASP-FE

Unavailable Second

FEND

A count of second(s) in which the DS1 signal is not

 

 

Path

 

available. A signal becomes unavailable upon the

 

 

 

 

completion of ten consecutive SESPs. A signal

 

 

 

 

becomes available again at the completion of ten

 

 

 

 

consecutive seconds with no SESPs. When a path is

 

 

 

 

unavailable, no other PM counts are maintained.

 

 

 

 

Derived from SESP-FEs.

 

Note: DS1 Path Parameters are collected at the HLXC for both directions, as shown in Figure 102-7.

Note: Far-end parameters are not derived from defects detected in the incoming signal but rather from the PRM (Performance Report Messages) embedded in the incoming signal from the far end. A Remote Alarm Indication condition disallows reception of a valid PRM. The framing format must be ESF for FEND information to be transmitted and displayed.

Note: For complete information on counts, refer to ANSI T1.231.

2-303

© 2000, ADC Telecommunications, Inc.