140
150
160
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180
190
200
210
220
230
■ Protective ground
■Transmit data (2) ■Transmit data ■Transmitter clock (DCE)
■ Receive data
■ Receive data (2)
■ Request to send
■ Receiver clock
■ Clear to send
■ Data set ready
- Request to send (2)
■ Signal ground
■ Data terminal ready
■ Data carrier detect -Signal quality detector -Test pin
- Rinq indicator -Test pin
- Data signal ratę detector
■Transmitter clock (DTE) ■ Data carrier detect (2)
■ Clear to send (2)
240