Solitine C+++ GPON OLT SFP Module – Build a Stronger Optical Access Network

A growing ISP network needs more than additional subscriber connections. Each PON port must deliver a suitable optical signal through splitters, connectors and long fiber routes while maintaining reliable communication with customer ONUs.

The Solitine C+++ GPON OLT SFP Transceiver Module is designed for this demanding part of FTTH infrastructure. Featuring Class C+++ optical performance, 20km rated transmission reach, SC/UPC connectivity and Digital Diagnostic Monitoring (DDM), it provides a compact optical interface for compatible GPON OLT equipment.

Unlike a standard Ethernet SFP transceiver, this module is specifically intended for GPON access networks, where multiple subscribers share one optical distribution infrastructure.

Plan Your PON Capacity Around the Optical Budget

A single GPON OLT port can serve multiple subscriber ONUs through passive optical splitters. However, every splitting stage introduces optical attenuation, and longer cable routes create additional transmission loss.

The Solitine C+++ module provides +5 to +7dBm optical transmit power with -32dBm receiver sensitivity, according to the manufacturer's published specifications.

Its high-power optical design is intended for GPON networks where appropriate signal margins and longer distribution paths are important.

Solitine advertises support for split ratios of up to 1:128 with an optical transmission distance of up to 20km under suitable conditions.

These are design capabilities rather than guaranteed results for every installation. An ISP should calculate the complete optical loss budget, including splitter insertion loss, fiber attenuation, splices, connectors and engineering margin before selecting a split ratio.

Supporting a 1:128 split also does not mean every subscriber receives a dedicated Gigabit connection. Actual service capacity depends on shared PON bandwidth, subscriber traffic and OLT configuration.

Understand the Downstream and Upstream Direction

The Solitine C+++ GPON OLT SFP Module operates using single-fiber bidirectional optical transmission.

From the OLT side, the module transmits downstream traffic at 1490nm towards subscriber ONUs and receives upstream traffic at 1310nm.

The optical interface supports the standard GPON transmission rates of approximately 2.488Gbps downstream and 1.244Gbps upstream.

These rates are shared across the GPON port rather than assigned individually to each connected subscriber.

The module uses single-mode optical fiber (SMF) and an SC/UPC connector, making the connector and fiber termination important considerations during deployment.

It must not be confused with an EPON OLT module or a conventional point-to-point Gigabit SFP. Although the physical SFP format may look similar, the underlying optical network protocols are different.

Optical Diagnostics During Deployment and Maintenance

When a fiber network begins experiencing registration failures or unstable optical connectivity, checking the transceiver's operating condition can help narrow down potential causes.

The Solitine C+++ supports DDM (Digital Diagnostic Monitoring), enabling compatible OLT hardware and management software to access supported transceiver diagnostic parameters.

Depending on the host OLT's implementation, diagnostic readings can assist technicians in examining optical signal levels and operating conditions.

This is particularly useful during GPON commissioning, maintenance and troubleshooting, where optical loss and transceiver behaviour can affect multiple subscribers.

DDM support does not guarantee identical monitoring features on every OLT platform. Available diagnostics depend on hardware and firmware compatibility.

Before Adding the Module to Your GPON OLT

The C+++ transceiver uses a compact, hot-pluggable SFP form factor, with dimensions of approximately 60 × 13.4 × 8.5mm and weight around 25g.

Its published operating temperature range is 0°C to 70°C, making appropriate OLT cooling and ventilation important.

The manufacturer lists compatibility with various GPON OLT platforms, but actual support should be checked against the OLT model, firmware version, supported optical class and transceiver identification requirements.

Before ordering, confirm that your equipment accepts a Class C+++ GPON OLT module and that the installed fiber distribution network uses the correct SC/UPC interface.

For a complete deployment, you can also explore Trende's SFP Module Collection, Networking Cables, Patch Cords, Networking Accessories and Network Switches.

Solitine C+++ GPON OLT SFP Module Price in Bangladesh

The Solitine C+++ GPON OLT SFP Transceiver Module price in Bangladesh is ৳2,517 at Trende Bangladesh, compared with the regular price of ৳2,750.

For ISP technicians and network operators comparing GPON Module price in BD, the Solitine C+++ offers Class C+++ optical transmission, 20km rated reach, SC/UPC connectivity and DDM support for compatible GPON infrastructure.

The manufacturer lists a package containing one C+++ GPON OLT SFP Module, one dust cap and a user guide.

Buy the Solitine C+++ GPON OLT SFP Transceiver Module from Trende Bangladesh with 1-year official warranty. Confirm OLT compatibility, optical power requirements and connector type before ordering.