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SxS central office
Posted by Jeff Glass on November 27, 2010, 11:42 pm
I an looking for source for WE Linefinder group relays SD's abd CD's
Looking for circuit description and schenatic for western electric ROTS ststem
AnD sources for a map of the US showihg the AT&T office locations according to the five level switch hierarchy? Looking for something nthat's 1980's vintage
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