network interface. Up to three cards may be installed into any of
the T3SU 300 DTE port card slots.
Even though the Quad DSX-1 interface card allows you to transport T1
information, the T3SU 300 still operates the DS3 interface in an unchan-
nelized fashion. Therefore, your DS3 network provider must supply you
with an unchannelized, point-to-point DS3.
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T3SU 300 User Manual
Chapter 1. Introduction
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