Cisco 2500 Series

J1-45
Shield
Circuit GND
-
Twisted pair no. 1 -
-
J2-7
Shield
Circuit GND
J1-44
Shield
LL/DCD
-
Twisted pair no. 2 -->
-
J2-8
Shield
DCD
-
J1-39
Shield
TxCE/TxC
-
Twisted pair no. 7 -->
-
J2-15
Shield
TxC
-
J1-40
Shield
NIL/RxC
-
Twisted pair no. 6 -->
-
J2-17
Shield
RxC
-
J1-33
Shield
DCD/LL
-
Twisted pair no. 12 <--
-
J2-18
Shield
LTST
-
J1-34
Shield
DSR/DTR
-
Twisted pair no. 11 <--
-
J2-20
Shield
DTR
-
J1-38
Shield
RxC/TxCE
-
Twisted pair no. 8 <--
-
J2-24
Shield
TxCE
-
EIA/TIA-449
Figure C-8 shows the EIA/TIA-449 cable assembly. Table C-9 lists the DTE pinouts. Table C-10 lists the
DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to
DTE.
Figure C-8: EIA/TIA-449 Cable Assembly
Table C-9: EIA/TIA-449 DTE Cable Pinouts (DB-60 to DB-37)
(Continued)
60 Pin Signal Description Direction 37 Pin Signal
Cabling
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520cab.htm (10 of 17) [10/27/2000 3:08:10 PM]