December 2001
Intermediate to advanced
656 pages
27h 19m
English
Content preview from Networking Explained, 2nd Edition
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Chapter 15: Dialup and Home Networking 457
T1 data rates over simplex UTP cable pairs, HDSL separates the cable pairs into two full-
duplex channels with each pair operating at 784 kbps. HDSL’s maximum local loop dis-
tance is 12,000 feet, which is twice that of T1. The increased loop distance is a direct result
of HDSL’s technology, which provides less signal loss and less electromagnetic radiation.
HDSL2 This is second-generation HDSL, which provides the same performance as
HDSL, but it does so over a single UTP cable pair.
ISDN DSL (IDSL) IDSL represents a hybrid ISDN/DSL technology. It is a symmetrical
DSL service that delivers a maximum data rate ...
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