Red Alarm Inquiry Test (#140) - Avaya G350 Maintenance Manual

Red Alarm Inquiry Test (#140)

A MG-DS1 Interface Media Module raises a Red alarm when the framing pattern of the incoming DS1
bit stream has been lost. The Red Alarm Inquiry Test checks the framing status of a MG-DS1 Interface
Media Module. A MG-DS1 Interface Media Module takes 3 seconds to recognize and report a Red alarm
and 10 seconds to recognize and report the resolution of a Red alarm.
When the MG-DS1 Interface Media Module detects a Red alarm, the Media Module transmits a Yellow
alarm to the remote DS1 endpoint and sends a RED ALARM message to the maintenance software. After
the Red alarm is confirmed, the maintenance software places all trunks or ports of the Media Module into
the out-of-service state. The inquiry test runs every 10 minutes until the Red alarm is cleared.
When the Red alarm is cleared, the MG-DS1 Interface Media Module stops transmitting the Yellow
alarm to the remote DS1 endpoint. The maintenance software restores all trunks or ports of the MG-DS1
Interface Media Module to the service state it was in before the Red alarm occurred.
Loss of Multiframe Alarm
If the MG-DS1 Interface Media Module is administered using DMI-BOS signaling, the MG-DS1
Interface Media Module raises a Loss of Multiframe Alarm (LMA) when it cannot interpret the incoming
signaling bits to synchronize to the multiframe pattern received in the 24th channel. Once the MG-DS1
Interface Media Module detects an LMA, the Media Module transmits a Remote Multiframe Alarm
(RMA) to the remote DS1 endpoint. Maintenance software handles both Red alarm and LMA alarm(s)
using the same mechanism.
Maintenance of the Avaya G350 Media Gateway
June 2004
Avaya Communication Manager controlled maintenance
MG-DS1 (DS1 Interface Media Module)
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