Fiberplex FOM-5400-T5B is a 4 channel multiplexer that provides electrical-to-optical conversions and extension of T1 or E1 carrier communication signals. It has four RJ-48C ports and one fiber optic transceiver. The card passes all alternate mark inversion (AMI) signaling regardless of the specific line encoding, making it transparent to handshaking protocols or standards. Each channel is independent and can be operated at different data rates.
The card incorporates an auto-detect function on the RJ-48C, which determines the correct pin-outs for transmit and receive pairs when the cable is connected. This allows users to use either a straight or crossover cable to save time on network configurations and installations.
The FOM-5400 offers much longer transmission distances than traditional copper cabling. The distance limitations for both T1 and E1 as specified in ANSI T1.403 is 6200ft (1890m) for T1 and 4800ft (1460m) for E1. However, singlemode optics on the card can extend the distances up to 80km.
A typical link consists of two FOM-5400s, one at each end of the network with a fiber optic cable in between.