Douskalis, B. (2000). IP telephony: The Integration of robust VoIP services. New Jersey: Prentice-Hall.
Chicago Stili AlıntıDouskalis, Bill. IP Telephony: The Integration of Robust VoIP Services. New Jersey: Prentice-Hall, 2000.
MLA AlıntıDouskalis, Bill. IP Telephony: The Integration of Robust VoIP Services. New Jersey: Prentice-Hall, 2000.
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