SONEPLEX

Chia sẻ: Minh Thanh | Ngày: | Loại File: PDF | Số trang:8

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SONEPLEX

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The concept of delivering T1s is almost 30 years old. New technolo- gies like HDSL have been intro- duced but, overall, T1-based ser- vices today are being delivered with the same architecture used in the 1960s. But, while the architec- ture has remained, applications have changed radically. The tele- phone company introduced T1 as a means of delivering message trunks over copper facilities between central offices. No one imagined that T1 would become the preferred vehicle for large amounts of bandwidth to business customers and that its growth in those applications would exceed all expectations....

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