
Technical Specifications
Technical Specifications
Technical Specifications
Technical Specifications
Interfaces
Interfaces
Interfaces
Interfaces
Page
Page
Page
Page 9-2
9-2
9-2
9-2
7Sep01
7Sep01
7Sep01
7Sep01
9.1.3
Handset interface
The pin out of the handset interface connector is as follows:
Pin no.
Pin Function
Signal Direction
1
+ earpiece
Output
2
- earpiece
Output
3
+ microphone
Input
4
- microphone
Input
5
+ 5 V
Output
6
GND
Input
7
Serial Data
Bidirectional
8
- Serial Data,
Bidirectional
9
Buzzer
Output
10
key
Input
9.1.4
Analogue 2-wire interfaces
The pin out of the two 2-wire interfaces is as follows:
Pin no.
Pin Function
Signal Direction
1
Not used
2
Not used
3
Signal A (Ring)
Input / Output
4
Signal B (Tip)
Input / Output
5
Not used
6
Not used
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