The Step by Step Switch streaming
'Info?'
Production companies
Audio Productions Inc.
tagline
Genre
Documentary
runtime | Genre | revenue |
---|---|---|
8 min | Documentary | 0 USD |
Download link for "The Step by Step Switch" :
SYNOPIS
This AT&T informational film describes in detail how step-by-step switches work, and demonstrates their real-time operation by calling a 5-digit phone number from another dial telephone.
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