Huawei / SFP / SFP+ Optical Transceivers

CLASS-B+ Equipment information & support

The Huawei CLASS-B+ is a high-performance optical transceiver module engineered for GPON OLT equipment in a standard SFP form factor.

Equipment information

Brand: Huawei
Equipment model: CLASS-B+
Equipment type: SFP / SFP+ Optical Transceivers
Controller / software version: Confirm against the installed equipment

View full product specifications

Huawei CLASS-B+ GPON OLT SFP Transceiver Module (1490/1310nm 20km 1:64 Split) - Official Front View

Information below comes from the current product catalogue. Confirm the controller, software version and configuration of the installed equipment separately.

Tx Wavelength: 1490nm
Rx Wavelength: 1310nm
Optical Interface: SC/UPC
Transmission Distance: 20km
Form Factor: SFP Hot-Pluggable Optical Transceiver (ITU-T G.984.2 Class B+)
Max Split Ratio: 1:64

Alarms & troubleshooting

OPT_LOS / RX_PWR_LOW (Loss of Optical Signal / Low RX Optical Power)

Optical module/board red LOS LED flashing or solid ON; NMS link state down.

Fiber cable rupture, contaminated fiber connector end-face, excessive optical splitter attenuation, or remote laser failure.

1. Measure incoming optical power with optical power meter (must be > -27dBm); 2. Clean LC/SC connector end-face and transceiver optical bore with fiber cleaner pen; 3. Locate fiber break using OTDR test; 4. Verify remote port TX laser operational status and wavelength matching; 5. If optical power is normal but LOS persists, replace module.

Access Complete Maintenance & Full Alarm Troubleshooting Manual

This page lists high-frequency critical alarm codes commonly encountered in field maintenance. Comprehensive manufacturer troubleshooting matrices, board-level repair guides, detailed electrical schematics, and firmware commissioning manuals are delivered alongside equipment upon formal project procurement, accompanied by dedicated FAE technical support.

Contact Account Manager for Full Manual

Share on-site information

01
Identify the exact model
Record the nameplate, system model and controller or module model.
02
Keep the alarm details
Record the full alarm text, indicator colour, timing and whether it persists.
03
Describe recent changes
Note recent replacements, software updates or configuration changes.

Record information visible in the existing interface. Electrical measurements, disassembly and replacement should follow the applicable manufacturer's manual and be performed by qualified personnel.