The TN420C Tone Detector detects and analyzes tones on the Time Division Multiplexing (TDM) bus and provides two Network Processing Elements (NPEs) with eight channels that provide four Dual Tone Multi-Frequency (DTMF) receiver ports, two general purpose tone detector ports, and two digital loop-around ports.

TN420C Tone Detector replaced by TN2182B and TN744D.

2 Year Warranty