User manual

Install the Cable Modem
4027620 Rev A 19
WARNING:

To prevent possible damage to equipment, disconnect any other telephone
service before connecting your cable modem to the same wires.

Hazardous electrical voltages can exist on the telephone, Ethernet, or coax
cable wiring. Be sure to disconnect AC power from all devices while
installing your service.

All wiring and connections must be properly insulated to prevent
electrical shock.

Telephone connections to an installed home telephone wiring network
should be done by a qualified installer. The cable telephone service
provider may offer professional installation and connection to the home
telephone wiring network. A fee may be charged for this service.
2 Power off your PC and other networking device; then, unplug them from the
power source.
3 Connect the active RF coaxial cable from your service provider to the coax
connector labeled CABLE on the back of the cable modem.
Note: To connect a TV, DHCT, set-top, or VCR from the same cable connection,
you will need to install a cable signal splitter (not included). Always check with
your service provider before using a splitter as a splitter may degrade the signal.
4 Connect your PC to the cable modem by connecting one end of the yellow
Ethernet cable to the Ethernet port on your PC, and the other end to the yellow
ETHERNET port on the back of the cable modem.
Note: To install more than one Ethernet device on a cable modem that has only
one Ethernet port, use an external multi-port Ethernet switch(s) or cable router
(not provided).
5 If your cable modem supports digital telephone service (VoIP), connect one end
of a telephone jumper cable (not included) to a telephone outlet in your home or
to a telephone or fax machine. Then connect the other end of the jumper cable to
the appropriate RJ-11 TELEPHONE port on the back of the cable modem. The
telephone ports are light gray and are labeled 1/2 and 2 or 1 and 2 depending on
the region of the world the cable modem is used.
Notes:
– Make sure to connect your telephone service to the correct RJ-11 port. For
single line telephone service, connect to port 1/2 or 1.
– In North America, cable modems have multi-line capability on the RJ-11
telephone port labeled 1/2. Line 1 is on pins 3 and 4 of port 1/2, and
Line 2 is supported on pins 2 and 5. In Europe, cable modems support
only one line per port. Line 1 is on port 1 and line 2 is on port 2.
– Telephones that require electrical connectors other than RJ-11 may
require an external adapter (sold separately).