The Step by Step Switch
The Step by Step Switch
The Step by Step Switch უყურეთ ონლაინ ქართულად. 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.
- ჟანრი: დოკუმენტური
- ქვეყანა: United States
- რეჟისორი:
- მსახიობები:
