Design Factors Principles
There must be no degradation in any standard analog service (POTS and NTSC), and there must also be backward compatibility with analog services;
All active components are on adapter cards;
Extensibility and scalability are designed into the RG (for example, it is a matter of adding adapter cards to go from supporting one phone and one TV to three phones and two TV's); and
Cable attachment interfaces (such as RJ-l1 ports, F-couplers, and 9-pin serial connections) either can be built into the RG itself, or placed on an adapter card for greater flexibility.
Cost Effectiveness Principles
The consumer should not pay more than today's cost for an equivalent level of service;
Consumers will have an alternative to the traditional TV set- top box; and
Broadband ATM networks will proliferate as a communications delivery standard to residences. Any digital data from a network is assumed to be ATM.