Speeds up to 38.4 kbps. Distances up to 12 miles (19.3 km). Async or sync operation, point-to-point or multipoint. 规格： Nonpowered, so you can install it where it's most convenient. Supports RJ-45, RJ-11, and terminal block connections. Internal, external, or receive loopback clocking in sync mode. V.54 loopback and V.52 BERT pattern generator. Built-in LEDs enable you to monitor test mode operation. Transformer isolation and surge protection guard against data loss. Automatic line equalization.
