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Just in case …
3.14
identifying yourself, “Hello, this is [your name].” When you press
START
, your fax
machine responds to these signals using other special tones (to us humans, they
sound a bit like screeches) which are its way of responding to the other machine’s
“greeting.” This communication is called handshaking.
The way fax machines work is regulated closely by international standards applied
by the International Telecommunications Union (
ITU
), an agency of the United
Nations. These standards ensure the compatibility of your fax machine with mil-
lions of other fax machines worldwide.