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The 621156 line
repeater consists of one dual PCM regenerator, which functionally is
two DS1 pulse regenerators; surge and lightning protection; and the
option switches for power configuration and fault locating.
The repeater has
two provisionable options; a power option and a fault locating
option. These options
are set by switches on the unit.
The power option selections are THRU and LOOP.
The fault locating selections are STD/COM and OS/SEP.
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