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Cisco ONS 15501 User Guide
78-14134-02, Release 2.0
Chapter2 Installing the Cisco ONS 15501
Communication Connections
Figure 2-3 Connecting the Cisco ONS 15501 to a DC Power Source
Communication Connections
The Cisco ONS 15501 communicates in three ways:
• SNMP (through Ethernet)
• alarm contacts (through RJ-45 connector)
• console port (through RS-232)
See Appendix C, “Connector Pinouts”for the wiring layouts of the RJ-45 and RS-232 connectors.
See the “Configuring Local Serial Communication” section on page 3-1 for detailed information about
the RS-232 console port.
1 Primary DC power connections 3 Redundant DC power connections
2 Tapped frame grounding holes
-48V
RET
-48V RET
68380
Redundant DC power
1 3
2