100 Series Intercom Stations
Document IM- ICM-100-2.2
Page 5
Wire
Signal
Orange
Mic -
White
Mic +
Black
Speaker
Green
Speaker
Yellow
Switch 1
Yellow
Switch 1
Red
Switch 2
Red
Switch 2
The intercom talkback unit is connected to a station audio board the same as any other intercom station via the
MTA connector. The following table gives the pin configuration for the MTA connector.
MTA Pin
Signal
1
audio +
2
audio -
3
N/C
4
N/C