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Installation Procedures 49
Table 17 Connector Pinouts for X.21 DTE cable (60-pin Connector) to DB-15 Male
Signal Name
Pin # on 60-pin
Connector
Pin # on DB-25
Connector
Direction (for
Serial Port)
Frame GND 46 1
Circuit GND 15 8
RTS 9, 10 3, 10 Out
CTS 1, 2 5, 12 In
DSR In
DCD (not used, see
DCE cable)
In
DTR Out
LL (not used) Out
SD+ 11 2 Out
SD- 12 9 Out
RD+ 28 4 In
RD- 27 11 In
SCTE+ Out
SCTE- Out
SCR+ 26 6 In
SCR- 25 13 In
SCT+ In
SCT- In
Shorting GR 1 47, 48
Shorting GR 2 51, 52,