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Telephone Technical Links

Telephone technology page

An excellent source of technical information and hundreds of links! Very informative.
Private Line Magazine's Home Page
Phone Trips - Phone Phreaks of the 1970's - Many interesting audio recordings of various dial tones, busy signals, stepper switch sounds, etc.
A Tour of the Pacific Bell Central Office
at 611 Folsom Street- Section 1
Sound Recording Research at Bell Labs
Roseville/Stepper.htm The sounds of Roseville Telephone Museum's step by step switch