X.21 Dte And Dce Serial Cable Pinouts - 3Com 2103R-CSDI Installation Manual

A-14 A A: S
PPENDIX PECIFICATIONS

X.21 DTE and DCE Serial Cable Pinouts

Table A-17 lists pinouts for:
X.21 DTE synchronous serial cable (Part Number ERMX21-CAB)
X-21 DCE synchronous serial cable (Part Number ERFX21-CAB)
Table A-17 X.21 DTE and DCE Cable Pinouts (DB-15)
1
15 Pin Signal
J2-1 Shield GND
J2-2 Transmit+
J2-9 Transmit-
J2-3 Control+
J2-10 Control-
J2-4 Receive+
J2-11 Receive-
J2-5 Indication+
J2-12 Indication-
J2-6 Timing+
J2-13 Timing-
J2-8 Circuit GND
Shield —
1
Any pin not referenced is not connected.
DTE DCE
Direction
—
—
—