Persinyalan nada ganda multifrekuensi: Perbedaan antara revisi
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'''Persinyalan nada ganda multifrekuensi''' ({{lang-en|
==Referensi==
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== Bacaan lanjutan ==
* [http://www.itu.int/rec/T-REC-F.902/en ITU's recommendations for implementing DTMF services]
* {{Citation
| last=Schenker
| first=L
| title=Pushbutton Calling with a Two-Group Voice-Frequency Code
| journal=The Bell System Technical Journal
| volume=39
| issue=1
| year=1960
| pages=235–255
| issn=0005-8580
| url=http://www.alcatel-lucent.com/bstj/vol39-1960/articles/bstj39-1-235.pdf
}}.
* {{cite journal|url=https://archive.org/details/bstj39-4-995|last1=Deininger|first1=R.L.|title=Human Factors Engineering Studies of the Design and Use of Pushbutton Telephone Sets|journal=Bell System Technical Journal|date=July 4, 1960|volume=39|issue=4|pages=995–1012}}
* Frank Durda, [http://nemesis.lonestar.org/reference/telecom/signaling/dtmf.html Dual Tone Multi-Frequency (Touch-Tone®) Reference], 2006.
* [http://www.itu.int/rec/T-REC-Q.24/en ITU-T Recommendation Q.24 - Multifrequency push-button signal reception]
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