Websites on Digital Hierarchy: Committee T1 Sponsored by the Alliance for Telecommunications Industry Solutions and accredited by ANSI for interoperability standards. DCB's T1 Info All you wanted to know about T1's but were afraid to ask. EverythingT1.com Offering T-1/T-3 information, glossary, FAQs, reference, Technical reports, news, messageboard, ISP lists and links. SONET/SDH Technical Summary Defines SONET and SDH, and provides references to appropriate standards organizations. T-1 Carrier Webopedia definition and links about T1. T1 T-extender DCB's T1 repeater for customer-owned cable.
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