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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-