Digital Diagnostics Monitoring (DDM) of SFPs

Overview

This section provides information on 1643 Access Multiplexer AM/1643 Access Multiplexer Small AMS features related to Digital Diagnostics Monitoring (DDM) of SFPs.

SFP module information

The user can view the performance parameters information of an SFP optical interface module. This data known as “digital diagnostics” depends on the manufacturer and type of SFP module in use.

The “digital diagnostics” feature provides the following information:

• optical input power in dBm (± 3 dB accuracy). This number is displayed as an average value (AVG) or as an optical modulation amplitude (OMA) value. The lowest value reported is −40 dBm

• optical transmit power in dBm (± 3 dB accuracy). The lowest value reported is −40 dBm.

• Laser bias current in mA (± 10% accuracy)

• internal temperature of the module in °C (± 3°C accuracy)

• supply voltage of the module in V (± 3% accuracy)

For each parameter, four thresholds are displayed in the same units. A flag appearing against a parameter indicates deviation from the upper and lower warning and alarm threshold values specified by the manufacturer of the SFP.

The system does not monitor the SFP parameters and no alarms are raised if the SFP thresholds deviate from the specified values.

Note:

The system generates an “unavailable” response if:

• digital diagnostics is not supported by the SFP module

• the administrative state of the module is not in the "ACCEPTED" state

• the data in the SFP contains checksum errors

Alcatel-Lucent – Proprietary

Use pursuant to applicable agreements