Cuốn sách này của Học viện bưu chính viễn thông nhé !
Unit 1. The telephone network
Unit 2. The data network
UNIT 3. THE BASIC TRANSMISSION SYSTEMS
UNIT 4. OPTICAL FIBRES
UNIT 5. TELEPHONE EXCHANGES
UNIT 6. DIGITAL TELEPHONE EXCHANGES
UNIT 7. COMPUTER COMMUNICATIONS
UNIT 8. INTERNET AND COMPUTER
UNIT 9. RADIO COMMUNICATIONS
UNIT 10. SATELLITE COMMUNICATIONS
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