E3, T3 Fiber Optic Modem

RAD’s FOM-E3 fiber optic modem and FOM-T3 fiber optic modem are fiber optic modems designed for long distance transport of E3 or T3 signals. Working opposite RAD’s Optimux, ACE and DXC family of products, these modems enable low cost extension and conversion of E3/T3 fiber interfaces to standard electrical interfaces. The FOM-E3 fiber optic modem and FOM-T3 fiber optic modem support a wide range of fiber optic interfaces, including long haul and Wave Division Multiplexing (WDM), and can operate over different wavelengths.

• Works opposite Optimux, ACE and DXC products to extend the range of equipment with electrical E3 orT3 up to 110 km (68 miles)

• Wave Division Multiplexing (WDM) module for operation over a single-strand fiber optic link, thereby reducing the costs of fiber optic lines

• Wide range of modular optical interfaces

The high speed FOM-E3 and FOM-T3 fiber optic modems extend transmission range of electrical E3 or T3 signals over fiber optic cables up to 110 km (68 miles).

Two models are available:

- FOM-E3 for E3 rates (34.368 Mbps)

- FOM-T3 for T3 rates (44.736 Mbps)

The FOM-E3 and FOM-T3 support a wide range of fiber optic interfaces including long haul laser for extended ranges and WDM laser for transmission over a single fiber.

Transparent to E3/T3 framing, the FOM-E3 and FOM-T3 modems operate opposite RAD’s DXC cross connect, Optimux-34 multiplexer (FOM-E3) and Optimux-45 multiplexer (FOM-T3). Similarly, they can operate opposite an ACE ATM access device, enabling E3/T3 ATM traffic to be transported over long distances on fiber and connect to an ATM or SDH network device with an electrical E3/T3 port.

FOM-E3 and FOM-T3 operation complies with ITU G.703, G.921 and G.956 standards. In addition, the modems support activation of local and remote loopbacks in compliance with the ITU V.54 standard.

The FOM-E3 and FOM-T3 modems include a dry contact alarm port for relay of alarm conditions to external alert equipment.