1 GROUND
2 GROUND
3 HANDS FREE ON/OFF
4 MUTE
5 TX
6 RX
7 RTS
8 REPROGRAMMING
9 ON HOOK CHARGER
10 AUX MIC
11 AUX SPEAKER
12 GROUND
1 GROUND
2 GROUND
3 HANDS FREE ON/OFF
4 MUTE
5 TX
6 RX
7 RTS
8 REPROGRAMMING
9 ON HOOK CHARGER
10 AUX MIC
11 AUX SPEAKER
12 GROUND