Serial interfaces cables and converters scheme  > Cisco pinouts
Cisco Part#: CAB-449MT=
60 Pin1 Signal Description Direction 37 Pin Signal
J1-49
J1-48
MODE_1
GND
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. 6 -
-
J2-4
J2-22
SD+
SD-
J1-24
J1-23
TxC/RxC+
TxC/RxC-
Twisted pair no. 9 -
-
J2-5
J2-23
ST+
ST-
J1-28
J1-27
RxD/TxD+
RxD/TxD-
Twisted pair no. 11 -
-
J2-6
J2-24
RD+
RD-
J1-9
J1-10
RTS/CTS+
RTS/CTS-
Twisted pair no. 5 -
-
J2-7
J2-25
RS+
RS-
J1-26
J1-25
RxC/TxCE+
RxC/TxCE-
Twisted pair no. 10 -
-
J2-8
J2-26
RT+
RT-
J1-1
J1-2
CTS/RTS+
CTS/RTS-
Twisted pair no. 1 -
-
J2-9
J2-27
CS+
CS-
J1-44
J1-45
LL/DCD
Circuit_GND
Twisted pair no. 12 -
_
J2-10
J2-37
LL
SC
J1-3
J1-4
DSR/DTR+
DSR/DTR-
Twisted pair no. 2 -
-
J2-11
J2-29
DM+
DM-
J1-7
J1-8
DTR/DSR+
DTR/DSR-
Twisted pair no. 4 -
-
J2-12
J2-30
TR+
TR-
J1-5
J1-6
DCD/DCD+
DCD/DCD-
Twisted pair no. 3 -
-
J2-13
J2-31
RR+
RR-
J1-13
J1-14
TxCE/TxC+
TxCE/TxC-
Twisted pair no. 7 -
-
J2-17
J2-35
TT+
TT-
J1-15
J1-16
Circuit_GND
Circuit_GND
Twisted pair no. 9 -
-
J2-19
J2-20
SG
RC

Arrows indicate signal direction: - indicates DTE to DCE, and - indicates DCE to DTE.

1 Any pin not referenced is not connected.

60 pin Cisco DB connector layout
60 pin Cisco DB connector
37 pin Cisco DB connector layout
37 pin Cisco DB connector
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Cisco EIA/TIA-449 (RS-449) DTE (DB-60 to DB-37) cable visual pinout:
Cisco EIA/TIA-449 (RS-449) DTE (DB-60 to DB-37) cable diagram
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Source(s) of this and additional information: Cisco Systems, Inc.
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