The NT1B-300TC is a compact ISDN Network Termination suitable for standalone or rack configurations. Terminal equipment (typically ISDN telephones) can be powered through the NT1.

Power is provided by an in-line desktop power supply or by the rack. Both point-to-point and multipoint ISDN terminal equipment configurations are supported. This unit may be used as a drop-in replacement in Lucent NT1B-300 applications, and is compatible with the Teo NT1B-300 Rack, Lucent NT1B-310 Rack, and SEI PoweRack PR300e.

Standalone NT1s can be locally or remotely powered.