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INSTALLATION

2-14

2.5.6 ALARM: Alarm indication functions

This group is hot popping and triggered by occurrence of alarm. If no

active alarm presents, this group will become invisible from menu tree.

Objects shown in this group are active alarms. This group contains only

one user operational option as ‘Clear All Alarm’ which will clear all

alarms history and start display new alarm. Below are functional

descriptions for all alarm indication objects in ‘ALARM’ group. Some of

the alarm will only occur under CAS mode, and they will be mentioned in

the description.

Alarm indication objects:

Object name Description

Rx signaling All 1s

Receipt of All ‘1’s on time slot 16 under CAS mode.

This usually indicates transmission trouble.

Rx signaling All 0s

Receipt of All ‘0’s on time slot 16 under CAS mode.

This usually indicates transmission trouble.

Ext Clk Lost

Absence of EXT CLOCK signal.

Rx Dist MF Alarm

Remote SYNC LOSS indicator. This alarm will only

occur under CAS mode.

Rx unframed All 1s

Receipt of AIS on E1 interface.

Rx Remote Alarm

Remote alarm indicator. This alarm occurs when one

of following three condition presents on remote E1

equipment:

1. Can not synchronize with local ETx from received

frames.

2. Receipt of AIS on E1 interface. (all ‘1’s)

3. No signal detected on E1 interface.

Rx Carrier Loss Absence of Rx signal

Rx Lost of Sync

Local SYNC LOSS indicator.

System Error

ETx module failure indicator.

Clear All Alarm

Clear all alarm history.

Table 2-5 DACS SET group function

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