FiberHome Fonsweaver 780B O2500-4 Optical Line Unit

Overview

The FiberHome Fonsweaver 780B O2500-4 Optical Line Unit is an optical line unit for the Fonsweaver 780B optical transport platform, supplied as a single FSP (service processing unit) configuration with 1 port and without the SFP module. The unit is manufactured by FiberHome in China and ships with firmware version 2.170.701. For telecom operators and industrial networks operating Fonsweaver 780B transport equipment, this Fonsweaver 780B O2500-4 unit is a genuine line-side spare that keeps the optical network carrying traffic when a line unit must be replaced.

Engineering Design

The Fonsweaver 780B is an optical transport platform, and the Fonsweaver 780B O2500-4 unit provides the optical line interface within that platform. This unit is configured as a single FSP with 1 port, meaning it carries one optical line port on a single service processing unit. The SFP module is not included and must be ordered separately, so the port can be fitted with the SFP type that matches the network fiber and reach requirements. The firmware version 2.170.701 is supplied with the unit, and the board is built by FiberHome in mainland China to the platform specification.

Compatibility & Integration

The Fonsweaver 780B O2500-4 line unit is designed for the FiberHome Fonsweaver 780B optical transport platform, so it is fitted into an existing Fonsweaver 780B shelf as a direct line-side replacement. Because the SFP module is not included, the network team selects the SFP type according to the fiber interface and the reach of the link, which keeps the unit flexible across different optical network segments.

When a line unit is replaced, the platform restores the port configuration from the network management system, and the unit is put into service following the standard Fonsweaver 780B commissioning procedure. Keeping a tested O2500-4 spare on the shelf protects the transport network against a failed line port and shortens the outage window for the services carried on that link.

Key Features

• Fonsweaver 780B optical line unit for the FiberHome transport platform
• O2500-4 unit type with 1 optical port
• Single FSP (service processing unit) configuration
• Without SFP module – SFP ordered separately to match network needs
• Firmware version 2.170.701
• Manufacturer: FiberHome, country of origin: China mainland

Industrial Applications

• FiberHome Fonsweaver 780B optical transport networks
• Telecom operator and utility backbone networks
• Spares for installed Fonsweaver 780B platforms in the GCC
• Network expansion projects using O2500-4 line ports

Technical Specifications

Why Seven Star LLC

Seven Star LLC supplies telecom transport spares to network operators and industrial customers across Oman and the wider GCC region. Every Fonsweaver 780B O2500-4 unit we supply is checked against the platform configuration before dispatch, and our team confirms the SFP requirements with you so the port can be populated correctly on site.

Confirming the Right Board

Line units for transport platforms look alike, so identify the spare from the board label and the network management system rather than from the front panel alone. Before ordering, check:

• The board type printed on the label and shown in the NMS inventory (O2500-4)
• The configuration: single FSP with one optical port
• The firmware release running on the other boards of the same shelf
• The SFP type, wavelength and reach currently fitted in the failed port

If your installed boards run a firmware release different from 2.170.701, tell us before dispatch. The network team can then plan whether the new board needs an upgrade or downgrade to match the shelf and the NMS version.

Installation and Commissioning

Replacement of a line unit is normally done inside a planned maintenance window, even where the platform supports hot swapping. A typical sequence is:

• Confirm traffic protection or reroute services carried on the affected port.
• Wear an ESD wrist strap and remove the fibres and the SFP from the failed unit.
• Insert the new board firmly into the same slot and let the shelf detect it.
• Fit the correct SFP, clean both fibre end faces with a proper cleaning tool, and reconnect.
• Check received optical power against the link budget and clear alarms in the NMS.

Record the board serial number, firmware and SFP details in the site records so the next replacement is straightforward.

Maintenance and Troubleshooting

Many line-port alarms are caused by the optics rather than the board. Dirty connectors, a damaged patch cord or an SFP near the end of its life all show up as low received power or bit errors. Clean and inspect connectors first, then swap in a known good SFP, and only then replace the Fonsweaver 780B O2500-4 board itself. Keep the dust caps on unused ports, and keep shelves free of dust, as filter blockage raises board temperature.

Applications in Oman and the GCC

FiberHome transport equipment is used in operator backbones, utility networks and industrial communication rings in the region. Pipeline, power and water networks with remote stations benefit most from a local spare, as a board failure at a remote node can otherwise mean a long outage while parts are shipped.

Sourcing from Seven Star LLC

Seven Star LLC supplies FiberHome transport spares and matching SFP modules. Share the board label, shelf type and firmware details and our team will confirm the correct part before the order is placed.

Ordering Information

To order the FiberHome Fonsweaver 780B O2500-4 from Seven Star LLC, quote the unit type and the SFP modules you need. Our team confirms availability, firmware and delivery to your location in Oman or anywhere in the GCC.

FAQ

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