IF4W4 Date and Time Event date: Location 4-Channel 4-Wire to Partyline Interface Event Types Products, Clear-Com Encore Analog Partyline Systems, Interfaces Interfaces TV cameras, 2-way radios, fiber circuits and other 4-wire devices to Clear-Com partyline Individual Transmit Receive and Null controls Transmit output switchable between mic and line level Built-in test jack and oscillator for quick nulling Selective partyline capability Accepts balanced or unbalanced 4-wire input Transformer isolated Terminal block and XLR connectors for each interface Powered by the intercom line