JDSU EST-120 Overview
The Acterna EST-120 is a multipurpose field service tester designed for commissioning, maintenance, and troubleshooting on E1 PCM circuits. It can perform a wide variety of tests, including: framed and unframed monitoring, framed and unframed end-to-end testing, drop and insert, channel associated signaling monitoring, Round Trip Delay measurement and repeated BERT.