FlexPoint OC3FF

Single-mode to Multimode Fiber Converters for OC-3 and STM-1


The FlexPoint OC3FF is a single-mode to multimode protocol-independent fiber converter

  • Supports all OC-3 standards over ATM and SONET
  • Plug-and-play installation requires no manual configuration
  • Operates with a constant rate signal from 1Mbps to 155Mbps
  • Supports auto-negotiation of duplex mode
  • Extends network distances up to 120km
  • Supports most network interfaces with a variety of cable and connector types
  • Labeled status LEDs for quick and easy installation
  • Wall-mount or rack-mount on a 5-Module shelf or in a 14-Module power-redundant FlexPoint Powered Chassis
  • Completely software independent with no installation of drivers required
  • Peace-of mind reliability backed by a lifetime warranty and free 24/7 technical support


The FlexPoint OC3FF is a protocol-independent fiber converter that provides reliable and cost-effective extension of network distances by connecting multimode fiber networks or devices over single-mode fiber cabling.

No manual configuration is required with the plug-and-play FlexPoint OC3FF. Connect the fiber cables to the appropriate interface and the installation is complete.

The FlexPoint OC3FF is designed to operate with a constant rate signal between 1Mbps to 155Mbps allowing the converter to be used in ATM networks as well as other fiber-to-fiber protocol applications.

The fiber port operates at 850nm, 1310nm or 1550nm and features SC or ST connectors. Multimode fiber models support distances up to 5km, single-mode fiber models support distances up to 120km, and single-mode single-fiber models support distances up to 20km.

The FlexPoint OC3FF features descriptions of the LED indicators on the label for easy in-the-field installation and maintenance. The LEDs report the availability of power and the detection of devices attached to the fiber ports.

FlexPoint modules can be mounted utilizing optional wallmounting hardware or with DIN-rail mounting brackets. They can also be rack-mounted in a 5-Module shelf or in a high-density 14-Module, power-redundant Powered Chassis.

FlexPoint modules installed in the 5-Module shelf or used as standalone devices can be powered by an external AC to DC power adapter, or through the 5VDC chassis connector. Standalone modules can also be powered by attaching an external DC power supply (18-60VDC). When used in the 14-Module power-redundant Powered Chassis with any combination of AC and DC power supplies, the installed modules are powered via the 5VDC chassis connector.

The wide variety of FlexPoint mounting and power options provide flexible upgrade paths as network requirements change and grow.

FlexPoint unmanaged media converters are easy to use and provide dependable fiber connectivity in Enterprise and Government networks around the world.

The FlexPoint OC3FF fiber converter can extend the network across single-mode fiber with distances up to 120km. In this application, the customer's router is connected to an Add Drop Multiplexer (ADM) providing access to the SONET ring using a pair of FlexPoint OC3FF fiber converters. The converters provide the multimode to single-mode conversion.

Model Type OC3FF
Protocols OC-3
Fiber Cables Multimode: 50/125, 62.5/125, 100/140μm
Single-mode: 9/125μm
Fiber Connectors SC, ST
LED Displays Power, Fiber Link/Activity
Dimensions W: 3.0" x D: 4.0" x H: 1.0"
Weight 6 oz. (without power adapter)
Compliance UL, CE, FCC Class A
Power Requirments   Barrel Connector Molex
Nominal Voltage: 9VDC 5VDC
Voltage Range: 6.0 to 15.0VDC 4.75 to 5.25VDC
Power Nominal: 0.2A @ 9VDC 0.5A @ 5VDC
Maximum Power: 1A @ 9VDC 0.75A @ 5VDC
Temperature 0 to 50º C
Humidity 5 to 95% (non-condensing)
Altitude -100m to 4000m
MTBF (hrs) Module without Power Adapter: 2,600,000
Module with Power Adapter -1: 250,000
Module with Power Adapter -2: 100,000
PortFiber TypeDistanceConnector Typeλ (nm)Min.
Tx Power (dBm)
Tx Power (dBm)
Rx Sense (dBm)
Rx Power (dBm)
Link Budget
Port 1 MM 5km 4450-x 4451-X 1310 -24 -14 -31 -14 7
Port 2 SM 30km 1310 -15 -8 -31 -8 16
Port 1 MM 5km 4452-x 4453-x 1310 -24 -14 -31 -14 7
Port 2 SM 60km 1310 -5 0 -31 -3* 26
Port 1 MM 5km - 4458-x 1310 -24 -14 -31 -14 7
Port 2 SM 120km 1550 -5 0 -31 -3* 26
Port 1 SM 30km - 4459-x 1310 -15 -8 -31 -8 16
Port 2 SM 120km 1550 -5 0 -31 -3* 26
Port 1 MM 5km - 4650-x 1310 -24 -14 -31 -14 7
Port 2 SM / SF 20km Tx 1310
Rx 1550
-15 -5 -30 -3 15
Port 1 MM 5km - 4651-x 1310 -24 -14 -31 -14 7
Port 2 SM / SF 20km Tx 1550
Rx 1310
-15 -5 -30 -3 15

Power Adapter Kits (-x):
-0 = No power adapter included, -1 = 110-120 VAC/60 Hz (US plug), -2 = 100-240 VAC/50-60 Hz (IEC plug, no power cord).
Contact Omnitron for other fiber options and operational temperature ranges.
*When using these models in pairs, a minimum attenuation of 3dB is required.

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