(单词翻译:单击)
DSU
data service unit
DTMF
DTS
digital termination service
Dual-Tone Multiple Frequency (DTMF)
the generic2 name for the tone signaling scheme used to signal from telephones to switching equipment, in which 10 decimal digits3 and two auxiliary4 characters are represented by selecting two frequencies of the following group: 697, 770, 852, 941,1209,1336,1447 Hz.
1 dual | |
adj.双的;二重的,二元的 | |
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2 generic | |
adj.一般的,普通的,共有的 | |
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3 digits | |
n.数字( digit的名词复数 );手指,足趾 | |
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4 auxiliary | |
adj.辅助的,备用的 | |
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