LevelOne RJ45 na SC Managed Fast Ethernet media konvertor, singlemódové vlákno, 20 km

The LevelOne FVM-1220 is a managed media converter that converts 10/100Base-TX Ethernet over RJ45 to 100Base-FX single-mode fiber via an SC connector for link distances up to 20 km. It supports half- and full-duplex operation, IEEE 802.3ah OAM for remote management, and provides a web-based user interface and SNMP for local and remote configuration. The unit includes LED indicators for activity, full-duplex and link status and is powered from a 100–240 V input with a 5 V/2 A output.

Advantages

The FVM-1220 offers managed fiber conversion with OAM compliance, allowing centralized monitoring and configuration of remotely connected converters and compatible IEEE 802.3ah switches. It supports flow control (IEEE 802.3x) to reduce packet loss, VLAN tagging including Q-in-Q, and Link Fault Pass-through (LFP) to propagate link failures. Management via web interface and SNMP simplifies administration and maintenance.

Suitable for

• Extending Ethernet networks over single-mode fiber up to 20 km
• Connecting copper-based switches or routers to fiber backbones
• Environments requiring remote management and OAM features
• Deployments needing VLAN tagging and traffic control

Key specifications

• Ethernet port: 1 × RJ45 (10/100Base-TX)
• Fiber port: 1 × SC (100Base-FX), single-mode, dual-fiber
• Maximum transfer distance: 20,000 m (20 km)
• Wavelength: 1310 nm
• Power input/output: 100–240 V input, 5 V ⎓ 2 A output
• Management: Web-based UI, SNMP, IEEE 802.3ah OAM
• Flow control: IEEE 802.3x
• Weight: 0.72 kg
• Colour: Black

How to use

Install the FVM-1220 in a suitable location with proper ventilation and connect the RJ45 Ethernet cable to the copper port and an SC single-mode fiber cable to the fiber port using the correct transmit/receive orientation for dual-fiber links. Apply mains power to the device and observe the LED indicators to confirm link and activity status. Access the web-based management interface or SNMP to configure duplex, speed, VLANs, OAM, and bandwidth controls according to your network plan. When integrating with OAM-capable switches, use IEEE 802.3ah features to manage remote converters.

Recommendations

For reliable operation, ensure fiber connectors are clean and properly aligned, use single-mode fiber for the specified 20 km reach, and enable flow control and LFP where network devices support these features. Keep firmware up to date and secure management access with appropriate credentials and network policies.