8
Planning the 7781CM Installation
7781CM Connectors
7781CM Connectors
identifies the connectors on the 7781CM.
describes these connectors.
Figure 5.
7781CM connectors
Reset Button
blanking cap
Coaxial Cable
Connector B
Earth Ground
Screw
DC Connector
blanking cap
Ethernet Port
blanking cap
Table 2.
Connectors on the 7781CM
Label
Description
Ethernet Port
(under
blanking cap)
RJ-45 port that supports 10/100/1000Mbps connections and provides
802.3af-compliant (15.4W) Power over Ethernet (PoE) output power to
external devices. PoE output (and internal CM heater) are only supported
when the 7781CM receives Power Over Cable (POC) from the HFC cable
plant.
Reset Button
(under
blanking cap)
“Appendix B: Rebooting and Resetting the 7781CM”
to access the reset button and either reboot the AP or reset the AP to
factory defaults.
DC Connector
(under
blanking cap)
In addition to the power supplied by the coaxial cable from the cable
modem termination system (CMTS), the 7781CM can also be DC
powered for configuration before field deployment.
Coaxial Cable
Connector B
Connects to the CMTS at the headend using a tap on the plant, and
provides AC POC to the 7781CM. For more information, refer to
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