双音多频

English translation: DTMF - Dual Tone Multi Frequency

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Chinese term or phrase:双音多频
English translation:DTMF - Dual Tone Multi Frequency
Entered by: Inga Jakobi

09:34 Oct 11, 2006
Chinese to English translations [PRO]
Telecom(munications) / mobile phone
Chinese term or phrase: 双音多频
通话过程中可实现结束, 电话薄, ..., 双音多频等功能
Inga Jakobi
Germany
Local time: 06:52
DTMF - Dual Toue Multi Frequeucy
Explanation:
双音多频信号(DTMF),电话系统中电话机与交换机之间的一种用户信令,通常用于发送被叫号码。

在使用双音多频信号之前,电话系统中使用一连串的断续脉冲来传送被叫号码,称为脉冲拨号。脉冲拨号需要电信局中的操作员手工完成长途接续。

双音多频信号是贝尔实验室发明的,其目的是为了自动完成长途呼叫。

双音多频的拨号键盘是4×4的矩阵,每一行代表一个低频,每一列代表一个高频。每按一个键就发送一个高频和低频的正弦信号组合,比如'1'相当于697和1209赫兹(Hz)。交换机可以解码这些频率组合并确定所对应的按键。

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Note added at 13 mins (2006-10-11 09:47:57 GMT)
--------------------------------------------------

'n'都变成了'u'。 重写:

Dual Tone Multi Frequency
Selected response from:

lingua franc (X)
Local time: 14:52
Grading comment
Thanks a lot!
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +7DTMF - Dual Toue Multi Frequeucy
lingua franc (X)
5DTMF - Dual Tone Multi Frequeucy
yuzouren


  

Answers


7 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +7
DTMF - Dual Toue Multi Frequeucy


Explanation:
双音多频信号(DTMF),电话系统中电话机与交换机之间的一种用户信令,通常用于发送被叫号码。

在使用双音多频信号之前,电话系统中使用一连串的断续脉冲来传送被叫号码,称为脉冲拨号。脉冲拨号需要电信局中的操作员手工完成长途接续。

双音多频信号是贝尔实验室发明的,其目的是为了自动完成长途呼叫。

双音多频的拨号键盘是4×4的矩阵,每一行代表一个低频,每一列代表一个高频。每按一个键就发送一个高频和低频的正弦信号组合,比如'1'相当于697和1209赫兹(Hz)。交换机可以解码这些频率组合并确定所对应的按键。

--------------------------------------------------
Note added at 13 mins (2006-10-11 09:47:57 GMT)
--------------------------------------------------

'n'都变成了'u'。 重写:

Dual Tone Multi Frequency


    Reference: http://zh.wikipedia.org/wiki/%E5%8F%8C%E9%9F%B3%E5%A4%9A%E9%...
lingua franc (X)
Local time: 14:52
Native speaker of: Native in ChineseChinese
PRO pts in category: 4
Grading comment
Thanks a lot!

Peer comments on this answer (and responses from the answerer)
agree  Shang
4 mins

agree  goalsedu
1 hr

agree  Denyce Seow
1 hr

agree  Bill Lao
1 hr

agree  anastasia t (X)
2 hrs

agree  Stefanie Sendelbach
3 hrs

agree  Giovanni Valenti
19 hrs
Login to enter a peer comment (or grade)

3 hrs   confidence: Answerer confidence 5/5
DTMF - Dual Tone Multi Frequeucy


Explanation:
1

yuzouren
Japan
Local time: 13:52
Native speaker of: Native in ChineseChinese
PRO pts in category: 7

Peer comments on this answer (and responses from the answerer)
neutral  Stefanie Sendelbach: So what's new?
29 mins
  -> THanx. Nothing new, a copy.

neutral  Denyce Seow: You did not correct the spelling mistake in "frequeucy".
6 hrs
  -> thanx. I give asker a chance to correct it.
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