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Appendix D – DTE interface
Pin assignments
Pin
Mnenumber monic
1
CCITT Signal
circuit source
Circuit DIN
CD
109
DCE
Description
Carrier detect
2
RXD
BB
D1
104
DTE
Received Data
3
TXD
BA
D2
103
DCE
Transmitted Data
4
DTR
108
DTE
Data terminal ready
5
GND
102
6
DSR
107
DCE
Data set ready
Signal ground
7
RTS
CA
S2
105
DTE
Request To Send
8
CTS
CB
M2
106
DCE
Clear To Send
9
RI
125
DCE
Ring indicator
Signal source DTE means the signal goes from the PC to the WorldPhone.
Signal source DCE means the signal goes from the WorldPhone to the PC.
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199
DTE interface
9 8 7 6
470
6
ek
Help
DCE
WorldPhone – Chapter 5. Appendices
DTE
D-17