SignalJ2DirectionDescriptionSignalJ1
RD+
RD-
J2-6
J2-24
<——
<——
Twisted pair no. 9I_RxD/TxD+
I_RxD/TxD-
J1-5
J1-18
RS+
RS-
J2-7
J2-25
——>
——>
Twisted pair no. 1O_RTS/CTS+
O_RTS/CTS-
J1-8
J1-9
RT+
RT-
J2-8
J2-26
<——
<——
Twisted pair no. 8I_RxC/TxCE+
I_RxC/TxCE-
J1-4
J1-17
CS+
CS-
J2-9
J2-27
<——
<——
Twisted pair no. 4I_CTS/RTS+
I_CTS/RTS-
J1-11
J1-10
LL
SC
J2-10
J2-37
——>
—
Twisted pair no.
12
B_LL/LL
GND
J1-13
J1-26
DM+
DM-
J2-11
J2-29
<——
<——
Twisted pair no.
10
I_DSR/DTR+
I_DSR/DTR-
J1-12
J1-25
TR+
TR-
J2-12
J2-30
——>
——>
Twisted pair no. 3O_DTR/DSR+
O_DTR/DSR-
J1-7
J1-20
RR+
RR-
J2-13
J2-31
<——
<——
Twisted pair no.
11
B_DCD/DCD+
B_DCD/DCD-
J1-6
J1-19
TT+
TT-
J2-17
J2-35
——>
——>
Twisted pair no. 6O_TxCE/TxC+
O_TxCE/TxC-
J1-2
J1-15
The following table lists the EIA/TIA-449 DCE cable pinouts. Arrows indicate signal direction.
Any pin not referenced is not connected.
Note
Table 51: EIA/TIA-449 DCE Cable Pinouts (DB-37 Female Connector)
SignalJ2DirectionDescriptionSignalJ1
Shield
GND
J2-1—Shield--
SG
RC
J2-19
J2-20
-Twisted pair no. 2MODE_1J1-22
SD+
SD-
J2-4
J2-22
<——
<——
Twisted pair no. 5I_RxD/TxD+
I_RxD/TxD-
J1-5
J1-18
Cisco ASR 9000 Series Aggregation Services Router SIP and SPA Hardware Installation Guide
77
Overview: Cisco ASR 9000 Series Router Shared Port Adapters
4-Port Serial Interface SPA Cables, Connectors, and Pinouts