Clear-Com EF-701M

The EF-701M interface converts a single channel of standard or TW partyline intercom to four-wire audio, while also converting call signals to RS-422 data (and back). The resulting four-wire audio plus RS-422 data can then be sent to a Clear-Com Matrix port, fiber-optic converter (modem) or connected to another EF-701M over twisted-pair cable such as CAT-5E.

• 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