DIAL THE MILES
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✎ Suggest a correctionHow Direct Distance Dialing was developed as an extension of local dialing to meet growing business and residential needs. Explains the nationwide numbering plan, how telephone users dial local and long distance calls, how machines compute billing for DDD calls, and why operators are still needed
Complete catalog record
Source: BellTel
Interest level: sh-c-ad
Price: free-loan
Format: sd color
Catalog numbers: LC card Fi A 59-403
Interest level: sh-c-ad
Price: free-loan
Format: sd color
Catalog numbers: LC card Fi A 59-403
Sources
- Educational film guide. Supplements (1959-62) — title, year, creator, length, format, color, sound, description, catalog record
Record added 2026-07-06 15:47:28 · Suggest a correction