Cisco 2500 Series

Table C-13: X.21 DTE Cable Pinouts (DB-60 to DB-15)
60 Pin Signal Description Direction 15 Pin Signal
J1-48
J1-47
GND
MODE_2
Shorting group - - -
J1-51
J1-52
GND
MODE_DCE
Shorting group - - -
J1-46 Shield_GND Single - J2-1 Shield GND
J1-11
J1-12
TxD/RxD+
TxD/RxD-
Twisted pair no. 3 -->
-->
J2-2
J2-9
Transmit+
Transmit-
J1-9
J1-10
RTS/CTS+
RTS/CTS-
Twisted pair no. 2 -->
-->
J2-3
J2-10
Control+
Control-
J1-28
J1-27
RxD/TxD+
RxD/TxD-
Twisted pair no. 6 <--
<--
J2-4
J2-11
Receive+
Receive-
J1-1
J1-2
CTS/RTS+
CTS/RTS-
Twisted pair no. 1 <--
<--
J2-5
J2-12
Indication+
Indication-
J1-26
J1-25
RxC/TxCE+
RxC/TxCE-
Twisted pair no. 5 <--
<--
J2-6
J2-13
Timing+
Timing-
J1-15
Shield
Control_GND
-
Twisted pair no. 4 -
-
J2-8
Shield
Control GND
-
Table C-14: X.21 DCE Cable Pinouts (DB-60 to DB-15)
60 Pin Signal Description Direction 15 Pin Signal
J1-48
J1-47
GND
MODE_2
Shorting group - - -
Cabling
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520cab.htm (16 of 17) [10/27/2000 3:08:10 PM]