DialABC Links:

ITU E.161 ITU
http://www.itu.int/rec/recommendation.asp
The official international standard on how to arrange letters on the touch tone phone key pad. (Also see the US standard ANSI T1.703)

THE REAL SOURCE OF THE WORD 'OCTOTHORPE' Ralph Carlsen, Adrian Kennard, and John Moynihan
http://www.sigtel.com/tel_tech_octothorpe.html
Why the # is also called an Octothorpe, plus a few other juicy tidbits.

About DialABC Links

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Last updated Tuesday December 11 2012
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