HỆ THỐNG VIỄN THÔNG

Fundamentals of Telecommunications, 2nd edition / Roger L. Freeman. Wiley-IEEE Press. 2013. (2005)

The Essential Guide to Telecommunication, 6th Edition / Annabel Z. Dodd. Prentice Hall. 2019.

Building a telephony systems with Asterisk / David Gomillion, Barrie Dempster. Packt Publishing. 2005.

Principles of Mobile Communication, Fourth Edition / Gordon L. Stüber. Springer International Publishing. 2017.

Asterisk: The Definitive Guide: Open Source Telephony for the Enterprise, 5th Edition / Jim Van Meggelen. O'Reilly Media. 2019.