Do you have a question about the Hitron CGNM-3550 and is the answer not in the manual?
Connect provided Ethernet cable to any LAN port.
Connect cable jack internet line here. (Cable not provided).
Connect provided Power Adapter cable here.
Connect the Comwave Internet Modem using the Cable Jack connection.
Connect the supplied Power Adaptor to the POWER port and plug into power bar.
Connect the Ethernet Cable from the modem LAN port to your computer.
Connect modem LAN port to phone adapter WAN port via Ethernet.
Connect a telephone to the designated port on the phone adapter.