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Chapter 2: Installation
A new technology has been developed for the telcos for delivery of T1 service.
The technology is known as high-bit-rate digital subscriber line (HDSL).
HDSL employs a 2B1Q modulation technique across the same types of pairs
traditionally encountered with metallic T1 delivery systems. HDSL satisfies
the telco distance requirements without the use of repeaters.
LOCAL AREA NETWORK CONNECTION
The Express L768/L1.5 has a 10BaseT connector that provides half-duplex 10
Mbps operation over a four-wire twisted pair. Place the switch in the TO HUB
position when connecting to a 10BaseT concentrator or Hub. Place the switch
in the TO NIC position when connecting directly to a computer's 10BaseT net-
work interface card.
Other types of ethernet interfaces (i.e., AUI, 10Base2, etc.) can be accommodat-
ed by obtaining an appropriate converter.
14
Express L768/L1.5 User Manual
61202192L1-1
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