silver box
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English
[
edit
]
English
Wikipedia
has an article on:
silver box
Wikipedia
Noun
[
edit
]
silver
box
(
plural
silver boxes
)
(
telephony
)
A modified
DTMF
box that adds four additional keys, creating a four-column-by-four-key grid.
Categories
:
English lemmas
English nouns
English countable nouns
English multiword terms
en:Telephony
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