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20 pin Bosh cell phone proprietary connector layout
Разъем 20 pin Bosh cell phone proprietary
full pinout

Full pinout for Bosch 909 Dual (without S):

Bottom
Pin
Name Direction Description
1 GND Ground, for all Bosch 9xx
2 DCD -?- Data Carrier Detect
3 DTR -?- Data Terminal Ready
4 RTS -?- Ready To Send
5 CTS -?- Clear To Send
6 DSR -?- Data Set Ready
7 IGN -?- Outside Device Present, if so put not more then 2,7 Volt in
8 GND Ground
9 SPK -?- Speaker, needs to be amplified
10 GND ANA -?- Ground analog
11 MIC -?- Microphone Elektret
12 PHP -?- Phone Present, puts out a LOW, its not ground
13 HEADSET -?- HeadSet Present, put a LOW in Sounds switched to HeadSet
14 TXD -?- Transmit Data
15   -?- that we dont know, but used by Bosch-Applications
16 BATT -?- Battery +, max. 10mAmps
17   -?- that we dont know, but used by Bosch-Applications
18 RXD -?- Receive Data
19 CBUS -?- CBUS for programing the phone - applicable to all Bosch 9xx
20 CHARGE -?- Charge + not more than 7 Volts

Pins other than GND, CBUS may be different in other than 909Dual models

На распиновку Bosch 909 Dual, 9xx cell phone есть 1 отзыв(а): 1 положительных и 0 отрицательных.

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