EF-701M Date and Time Event date: Location 4-Wire Interface with Call Signal Event Types Products, Clear-Com Encore Analog Partyline Systems, Interfaces High-quality partyline to 4-wire audio conversion interface Maintains hybrid null with multiple units on a channel Converts call signals to RS-422 data with selectable baud rate Connects intercom with call signal over fiber Clear-Com and RTS compatible Built-in test tone and jack for nulling Multi-mode data status LED Powered by the intercom line