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D-5000 / May 2000
INTERCOM MODULE
Lower DB-25 Connector — Control
Pin 10 - External digital + power feed
Pin 23 - External digital common
Pin 4 - Station call line 1
Pin 17 - Station call line 2
Pin 18 - Station call line 3
Pin 6 - Station call line 4
Pin 7 - Station call line 5
Pin 20 - Station call line 6
Pin 21 - Station call line 7
Pin 9 - Station call line 8
Pin 24 - +16V
Pin 12 - -16V
Pins 5,8,11,19,22,25 - Audio Common
Pin 13 - N/C
Typical DB-25
connector