ISDN बेसिक रेट इंटरफेस (BRI) दो 64 Kbps B चैनल और एक 16 Kbps D चैनल प्रदान करता है। B चैनलों का मुख्य रूप से किस लिए उपयोग किया जाता है?

Which data transmission technology is most suitable for a rural bank branch located in a geographically difficult terrain where laying physical fiber optic cables is not feasible, and high-speed satellite-based connectivity is required with low latency to maintain real-time synchronization with the Data Center?

What does the acronym PSTN stand for?