Cisco 2500 Series

J1-34
Shield
DSR/DTR
-
Twisted pair no. 7 <--
-
J2-E
Shield
DSR
-
J1-33
Shield
DCD/LL
-
Twisted pair no. 6 <--
-
J2-F
Shield
RLSD
-
J1-43
Shield
DTR/DSR
-
Twisted pair no. 10 -->
-
J2-H
Shield
DTR
-
J1-44
Shield
LL/DCD
-
Twisted pair no. 11 -->
-
J2-K
Shield
LT
-
J1-18
J1-17
TxD/RxD+
TxD/RxD-
Twisted pair no. 1 -->
-->
J2-P
J2-S
SD+
SD-
J1-28
J1-27
RxD/TxD+
RxD/TxD-
Twisted pair no. 5 <--
<--
J2-R
J2-T
RD+
RD-
J1-20
J1-19
TxCE/TxC+
TxCE/TxC-
Twisted pair no. 2 -->
-->
J2-U
J2-W
SCTE+
SCTE-
J1-26
J1-25
RxC/TxCE+
RxC/TxCE-
Twisted pair no. 4 <--
<--
J2-V
J2-X
SCR+
SCR-
J1-24
J1-23
TxC/RxC+
TxC/RxC-
Twisted pair no. 3 <--
<--
J2-Y
J2-AA
SCT+
SCT-
Table C-12: V.35 DCE Cable Pinouts (DB-60 to 34-Pin)
60 Pin Signal Description Direction 34 Pin Signal
J1-49
J1-48
MODE_1
GND
Shorting group - - -
J1-50
J1-51
MODE_0
GND
Shorting group - - -
J1-53
J1-54
J1-55
J1-56
TxC/NIL
RxC_TxCE
RxD/TxD
GND
Shorting group - - -
J1-46 Shield_GND Single - J2-A Frame GND
Cabling
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520cab.htm (14 of 17) [10/27/2000 3:08:10 PM]