Specifications

Chapter 1 Introduction Installation and Operation Manual
1-8 Functional Description Optimux-108 Ver. 6.1
Response to Alarm Conditions
AIS is transmitted on each tributary output in the following cases:
• Loss of uplink input signal is detected
• Uplink frame synchronization is lost.
An AIS signal is sent on a tributary instead of the tributary data stream through
the uplink in the following cases:
• Loss of tributary input signal is detected
• AIS is received on the tributary input
• Local Loop Back is activated on the E1 input.
Rear Panel Alarm Connector
An optional dedicated rear panel connector is used to provide major and minor
alarm indications, by means of dry contacts.
The major alarm is activated in the following cases:
• Optimux-108 is not powered, or total power supply failure (e.g., when two
power supplies are installed, failure of both supplies)
• One of two power supplies is faulty (optional, in case both power supplies
are installed)
• Loss of uplink input signals, or loss of uplink frame synchronization
• Signal loss at backup link while Link Redundancy mode is Automatic/Manual
• Loss of tributary input signals
• Redundancy mode is Automatic/Manual, but backup link is not installed
• Unable to activate redundancy
• MNG-ETH link failed
• Missing DTR signal (relevant only for ISO 2110, masked for Telebras).
• Connection with the remote device is lost.
The minor alarm is activated in the following case:
• Reception of AIS signal on tributary inputs.
Events
Optimux-108 supports the following events, which are shown in the Event Log:
• Failure in processing software download
• Event log buffer has exceeded the maximum size and new events are written
over the old ones
• Login was performed to the unit
• Trying to log into the unit with wrong user name or password
• Read/write via SNMP with wrong community
• Unit is powered up
• Uplink is switched from A to B and vice versa.