• Call signaling is accomplished using an inaudible

(20kHz) signal to activate a call indicator LED.

• Remote talk-off (mic kill) active, unattended remote

station microphones may be deactivated by

momentarily injecting an inaudible (24 kHz) signal into

the corresponding intercom line. The MCE-325 can

send and receive talk-off (mic kill) signals.

• VOX circuit, the MCE-325 may be programmed for

voice activation of the microphone.

• Simple IFB program audio assigned to a channel is

interrupted during talk.

• The microphone preamplifier circuit contains a limiter,

which helps to equalize voice levels.

• Retains programming even when power is shut off.

• External devices, such as 2-way radios, speaker mute

relays, or paging systems may be activated through

key outputs at the auxiliary connector on the rear

panel. The key outputs may also be used to expand

the simple IFB function, allowing any one (1) of a

number of MCE-325 stations to interrupt the program

source and talk on the line.

Features