This summary provides an overview of the RF specification. The interoperability specification provides a basic transport scheme that will allow early modems developed to the specification to continue to work on cable systems even though more advanced service capabilities may be added to future modems. As a result, investment in the early interoperable modems will not be stranded when more advanced modems are brought to the marketplace. Cable modems that will work on a data enabled cable system may be purchased by the consumer from a retail outlet. Economies of scale advantages will be realized for key components of the cable modem system.
Manufacturers can reduce risk by developing to a well known specification.
MCNS is comprised of Comcast Cable Communications, Inc., Cox Communications, Tele-Communications, Inc., and Time Warner Cable. This draft specification is being issued to solicit comments and submissions from manufacturers on the functionality, clarity, and precision of the described interfaces. Care was taken to insure that the technology choices meet the market needs for the first 3-5 years of service. In addition, because the technology is evolving, hooks were incorporated to facilitate the introduction of new technology as it becomes available. However, it should be noted that it was not a goal of this specification to incur excessive risk or delays by pushing the limits of technology and performance.