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美国弗吉尼亚州贝尔亚特兰大的C&P电话公司和位于弗吉尼亚州北区Cascades的Cablevision ofLoudoun公司正在进行光纤传输的试验,因此,其用户享受着高质量的有线电视服务。这项试验采用宽频带技术公司(BBT)提供的新技术,根据集成原理,在同一根光缆上把变换过的数字音频信号和视频信号送到家庭。这种技术首次投入商用。 1990年6月以来,当C&P和BBT公司开始此项试验时,上述两家公司的用户就开始享受光纤电话服务。用户反映的服务质量的提高包括:①与目前所能得到的图象相比,光纤传送的图象更加清晰,更加稳
Fiber-to-the-internet trials are being conducted with C & P Telephone, of Atlanta, Va., And Cablevision ofoudoun, Cascades, North Carolina, where users enjoy high-quality cable services. The trial uses the new technology offered by Broadband Technologies (BBT) to bring converted digital audio and video signals to the home on the same cable based on the integration principle. This technology is put into commercial use for the first time. Since June 1990, when C & P and BBT started the trial, subscribers from the two companies started to enjoy fiber-optic telephone service. Users to improve the quality of services reflected include: ① compared with the current available images, the optical transmission of the image more clearly and more stable