Cisco DPC2420 User Manual page 127

Can I Use my Existing Phone Number with the Residential Gateway?
Telephone numbers are portable in some areas. Contact your telephone service
provider for more information about using an existing telephone number.
How Many Telephones Can I Connect?
The RJ-11 telephone-style connectors on the residential gateway can each provide
telephone service to multiple telephones, fax machines, and analog modems. The
maximum number of telephone devices connected to each RJ-11 port is limited by
the total Ringing Load of the telephone devices that are connected. Many telephone
devices are marked with a Ringer Equivalent Number (REN). Each telephone port
on the residential gateway can support up to a 5 REN load. The sum of the REN load
on all of the telephone devices attached to each port must not exceed 5 REN.
What if I Don't Subscribe to Cable TV?
If cable TV is available in your area, data service may be made available with or
without subscribing to cable TV service. Contact your local service provider for
complete information on cable services, including high-speed Internet access.
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