Telephone Service: Telephone Requirements
Introduction
This section provides hardware and software requirements for utilizing your cable modem for telephone service.
Number of Telephone Devices
The
Telephone Device Types
You can use telephone devices that are not labeled with a REN number, but the maximum number of attached telephone devices cannot be accurately calculated. With telephone devices that are not labeled, each device should be connected and the ring signal should be tested before adding additional devices. If too many telephone devices are attached and the ring signal can no longer be heard, telephone devices should be removed until the ring signal works properly.
Telephones, fax machines, and other telephone devices should use the center 2 pins of the
Dialing Requirements
All of your telephones must support Dual Tone
Important: Pulse dialing is not supported.
Telephone Wiring Requirements
The cable modem is designed to support interior telephone wiring. The maximum distance from the unit to the most distant telephone device must not exceed 1000 feet (300 meters). Use
Important: Connection to an existing or a new permanently installed home telephone wiring network must be done by a qualified installer.
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