Multiplexer Unit belongs to the 2-Mbit/s hierarchy. It is connected via. An internal alarm bus [SIBUS] to an alarm-signalling module which collects and displays fault signals and also forwards them to a central supervisory unit. HTL Ltd is an ISO 9001 awarded company that manufactures Multiplexer Unit.
HTL Ltd also manufactures wide range of telecom products. Multiplexer Unit has an in-built power supply. Up to 4 digital signals with a nominal bit rate of 2048 kbit/s are interleaved in time by transmit section to form a digital signal with a nominal bit rate of 8448 kbit/s. The receive section recovers the four 2-Mbit/s signals from the incoming 8-Mbit/s signal.
