CPM-a Port Types
212 7750 SR-a4 and SR-a8 Installation Guide
CPM-a Port Types
Figure 77 identifies the ports on the CPM-a and Table 105 describes the features.
Figure 77: CPM-a Ports
Console Port
The RS-232 serial port on the front panel of the CPM uses an RJ-45 connector to connect to
the router for out-of-band console configuration.
A null cable is included in the accessory box (3HE08703AA). The null cable has an RJ-45
connector on one end for use with the serial port on the CPM, and a DB9 female connector
on the other end for use with the craft terminal.
Table 105: 7750 SR-a CPM-a Connector and LED Features
Key Port
1 Console Port
2 Management Port
3 OES Port
4 Sync-E/1588v2
5 BITS Port
6 Alarms Interface Port
7 1PPS Port
Alarms
1PPS
ACO/LT
Critical
Lnk
DTE
Pwr
7750 CPM-a
Stat
Console
Mgmt OES
SyncE/1588
BITS
Compact Flash
DCE
Act Lnk Act
Major Minor
24596
73 5
1 2 4 6
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