Basic Rate ISDN & Analog Test Telephone

Argus 3U NT - Packet Data Systems Ltd. (PDS)

The Argus 3U NT is an all-round tester for basic rate ISDN (S/T and U) and POTS (analog). In addition to the features offered by the Argus 3U Plus, this model offers passive monitoring and simulation of the exchange plus support for testing permanent circuits.