Двотонска мултифреквентна сигнализација (Serbian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Двотонска мултифреквентна сигнализација" in Serbian language version.

refsWebsite

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214^th place

772^nd place

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12^th place

1books.google.com

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low place

books.google.com

Houston, Keith (24. 9. 2013). Shady Characters: The Secret Life of Punctuation, Symbols, and Other Typographical Marks. W. W. Norton. стр. 45. ISBN 978-0-393-24154-9.

ietf.org

tools.ietf.org

H. Schulzrinne and T. Taylor, RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals, RFC 4733, December 2006.
C. Holmberg, E. Burger, H. Kaplan, Session Initiation Protocol (SIP) INFO Method and Package Framework, RFC 6086, January 2011.

tech-faq.com

"What are the ABCD tones?" — Tech FAQ

worldcat.org

Dodd, Annabel Z. (2012). The essential guide to telecommunications (5th изд.). Upper Saddle River, NJ: Prentice Hall. ISBN 9780137058914. OCLC 779863446.