Q: What are the interface types, pin/port definitions, and communication specifications of the Huawei GPON OLT Class C++ module and integrated system?

According to Huawei official technical documentation, the interface and communication specifications are as follows: 1. Interface and Fiber Specifications: Optical connector type is SC/UPC, using single-mode optical fiber with a maximum transmission distance of 20 km (up to 40 km under specific link conditions). 2. Data Rates: GPON transmission rates are 1.244 Gbit/s (TX) and 2.488 Gbit/s (RX). 3. Service and Auxiliary Interfaces (e.g., PC500 integrated module): Equipped with 2 x SFP (GE o, GPON), 4/6 x GE (PoE / PoE+ / PoE++), 1 x GE (e), plus 1 NMS port and a WLAN module. 4. Communication and Network Management: Supports Digital Diagnostic Monitoring (DDM). Remote and local management are supported via eSight unified NMS, onboard Web NMS, and IEEE 802.1x access authentication.

Question 1

Which Huawei OLT line cards support the HW-OPT-GPON-OLT-C-PLUS, and does it allow mixed deployment with Class B+/C+?

Accepted Answer

The HW-OPT-GPON-OLT-C-PLUS is fully compatible with Huawei SmartAX and OptiXaccess GPON service boards including GPFD, GPBD, GPUF, H901GPLF, and H902GPLF, deployed in MA5608T, MA5683T, MA5680T, and MA5800 series (X2/X7/X15/X17). It supports port-by-port hot-plug co-existence with legacy Class B+ and Class C+ optics on the same line card without slot-wide reconfiguration. Embedded with SFF-8472 compliant DDM, the module reports real-time Tx/Rx power, bias current, and temperature directly to the Huawei VRP/OptiX OS. Its burst-mode dynamic range prevents near-end ONT receiver saturation even when high split and low split branches operate in parallel.

Question 2

How does this Class C++ module perform regarding power consumption, heat dissipation, and ruggedized environmental reliability?

Accepted Answer

Powered by a standard 3.3V supply, the HW-OPT-GPON-OLT-C-PLUS limits its maximum power consumption to < 1.5W, minimizing thermal dissipation challenges in fully-loaded 16-port GPON service blades. It features a ruggedized zinc-alloy die-cast housing compliant with Telcordia GR-468-CORE and EN 55032 class B for EMI/RFI mitigation. Designed for standard (0°C to +70°C) and demanding outdoor shelter conditions, it integrates surge protection (IEC 61000-4-5 compliant), self-healing overcurrent limiters, and dynamic APD high-voltage bias stabilization, ensuring zero bit-error-rate (BER) operation under continuous thermal and electrical stresses.

Question 3

What are the interface types, pin/port definitions, and communication specifications of the Huawei GPON OLT Class C++ module and integrated system?

Accepted Answer

According to Huawei official technical documentation, the interface and communication specifications are as follows:
1. Interface and Fiber Specifications: Optical connector type is SC/UPC, using single-mode optical fiber with a maximum transmission distance of 20 km (up to 40 km under specific link conditions).
2. Data Rates: GPON transmission rates are 1.244 Gbit/s (TX) and 2.488 Gbit/s (RX).
3. Service and Auxiliary Interfaces (e.g., PC500 integrated module): Equipped with 2 x SFP (GE o, GPON), 4/6 x GE (PoE / PoE+ / PoE++), 1 x GE (e), plus 1 NMS port and a WLAN module.
4. Communication and Network Management: Supports Digital Diagnostic Monitoring (DDM). Remote and local management are supported via eSight unified NMS, onboard Web NMS, and IEEE 802.1x access authentication.

Key specifications	Value
Physical Form Factor	SFP (Class C++ ultra-high optical power)
Data Rate	Downlink 2.488Gbps / uplink 1.244Gbps (asymmetric)
Central Wavelength	Tx 1490nm / Rx 1310nm (single-fiber bidirectional BOSA)
Maximum Distance	20 (supports a high 1:128 split ratio) km
Fiber Type	Single-mode single-fiber (BiDi)
Optical Connector	SC/UPC single optical receptacle
Typical Power Consumption	< 1.8 W
Operating Temperature	0°C ~ +70°C
Transmitter Power	+4.5 ~ +10.0 (Ultra-High Optical Launch Power) dBm
Receiver Sensitivity	< -32.0 (Ultra-High Receiver Sensitivity) dBm

Huawei GPON OLT Class C++ High-Power BiDi Optical Transceiver Module (SC/UPC)

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What this product is

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FTTH residential broadband distribution

Rural extended-reach fiber deployments

Gigabit Passive Optical Network (ODN) builds

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