Viswanathan, T. (2000). Telecommunication Switching Systems and Networking. Prentice Hall.
Tohutoru Kātū Chicago (17th ed.)Viswanathan, Thiagarajan. Telecommunication Switching Systems and Networking. New Delhi: Prentice Hall, 2000.
Tohutoro MLA (9th ed.)Viswanathan, Thiagarajan. Telecommunication Switching Systems and Networking. Prentice Hall, 2000.
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