ZyXEL Communications 2864 Series User Manual page 245

Signal ITU-TSS
pin Signal
name
1 101
2 103
3 104
4 105
5 106
6 107
7 102
8 109
15 114
17 115
18 141
20 108/2
108/1
21 140
22 125
24 113
25 142
Appendix A
EIA-232D INTERFACE
EIA Description
Signal
name
AA Protective Ground (GND).
BA Transmitted Data(TXD).
BB Received Data(RXD).
CA Request To Send (RTS).
CB Clear To Send (CTS).
CC Data Set Ready (DSR).
AB Signal Ground (GND).
CF Data Carrier Detected (DCD).
DB Transmit Clock Signal (source: DCE).
DD Synchronous Receive Clock.
Local Analog Loopback Test.
CD Data Terminal Ready (DTR).
Connect DCE to line.
Remote Digital Loop Test.
CE Ring Indicator(RI).
DA Transmit Clock Signal (source: DTE).
Test Indicator.
A–1
Direction
DTE -DCE