For Internet access, cable lines are in some technical respects more attractive than high-speed telephone lines.
Each participating classroom is equipped with digital video cameras connected to high-speed telephone lines or a live satellite feed.
In the meantime, an individual can improve voice calls over the Web by using a quality Internet connection, with a high-speed telephone line, for instance.
Each customer's modem sends data to the cable operator, where ISP Channel provides a connection via high-speed telephone lines to the Internet.
It says that in addition to offering such service to consumers over high-speed telephone data lines, the company will indeed provide it over cable modems.
His firm could be American: it invents and sells gadgets and software for high-speed telephone lines (such as a telephone that allows the user to adjust the quality, and thus the cost, of a call).
The technology continues to hold great long-term promise -- including the growing adoption of high-speed, broadband connections to the Internet through cable television modems or high-speed telephone lines.
Time Warner, with help from Sprint and MCI, will soon offer Internet phone service to many of its cable customers, and AT&T is following suit by using high-speed telephone data lines, known as D.S.L., instead of cable modems.
Lawyers at the F.T.C. have also been examining whether the proposed merger would lead to AOL's moving away from using high-speed telephone lines, as one company memorandum suggested.
A Reliant spokesman, Richard Wheatley, said the company had received subpoenas from the United States attorney's office in Houston relating to round-trip trades of electricity, natural gas, capacity on high-speed telephone and data networks and of other commodities from 1999 through 2001.
America Online executives have denied that would be part of their strategy, but the commission is exploring whether to impose conditions that would require AOL, the world's largest Internet service provider, to continue to make use of high-speed telephone lines as well as Time Warner's cable network.
