China Aerospace Telecommunications Ltd
5
1.2 Handset port definition(Local setting and upgrading)
Used for parameters setting and firmware upgrading.
1.3 Power and data transmission cable.
Pin number
Indication
Function
Color
1
RXD
Used
for
communicate
between device and port tool.
2
TXD
3
5V DC
4
Ground
5
SPK
Speeking
interface
6
SPK
7
MIC+
microphone
interface
8
MIC-
Pin number
Indication
Function
Color
1
Power DC9-36V
power input
Red(thick)
5
GND
Ground
Black(thick)
9
ACC
ACC input(+)
White
