Transition Networks RS-449 - Manual (Page 7)

Confidential Page 7 02/27/03
Rev 0.2
Transition Part Number 21DTE-3
X.21 DTE High Speed Serial Cable Pin-out (CAB-SS-21MT)
26-Pin Signal Name Note Direction DB-15 Pin Signal Name
Drain wire
Shell Shield — Shell/cover
J2-01
Shield_GND
J1-21
J1-24
J1-26 MODE_2
MODE_DCE
GND All Pins listed
connect to J1-26
GND — J2-08 CCT GND
J1-05
J1-18 RXD/TXD+
RXD/TXD- Twisted pair <—
<— J2-04
J2-11 RECEIVE+
RECEIVE-
J1-01
J1-14 TXD/RXD+
TXD/RXD- Twisted pair —>
—> J2-02
J2-09 TRANSMIT+
TRANSMIT-
J1-11
J1-10 CTS/RTS+
DSR/DTR+ Twisted pair <—
<— J2-05
J2-12 INDICATION+
INDICATION-
J1-08
J1-09 RTS/CTS
DTR/DSR+ Twisted pair —>
—> J2-03
J2-10 CONTROL+
CONTROL-
J1-04
J1-17 RXC/TXCE+
RXC/TXCE- Twisted pair <—
<— J2-06
J2-13 TIMING+
TIMING-