Flash - NEC i-Series Alphanumeric Display Feature Handbook

Flash

Flash allows you to access certain features of the telephone company
or PBX to which your phone system is connected. This lets you take
full advantage of whatever features the connected telephone company
or PBX offers. Flash accesses these features by momentarily interrupt-
ing the loop current on your outside line. This is much like briefly
pressing and then releasing the hookswitch on your telephone at home.
To flash the outside 1.
line you are on:
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