How do I install and connect the modem?
Connect the coaxial cable to the cable connector on the rear panel and to the cable wall outlet, then connect the supplied Ethernet cable from the Internet port to a wireless router or Ethernet-enabled device. Connect an RJ-11 phone cable to the Voice 1 port (and up to Voice 4) if voice service is provisioned by your service provider, then plug the power adapter into the Power port and into a wall outlet. Do not bend or over-tighten the coaxial cable, as this may damage the connector. (Page 3)
From the official Spectrum Business D3 1 Advanced Voice Modem manual, page 3
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