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參數資料
| 型號： | MT884 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | () |
| 中文描述： | （） |
| 文件頁數： | 1/11頁 |
| 文件大小： | 87K |
| 代理商： | MT884 |
A-229
CONTENTS
Introduction
Applications
How it Works
A Three Pin Interface
General Requirements
Data Transmission Methods and
Message Formats
Application Circuits Using the MT8841
±
Five Function Telephone Line Interface
±
Micro-Controller Parallel Read
±
Micro-Controller Serial Read
±
Multiple Line CID Card
A Final Word
Introduction
The purpose of this Application Note is to provide
information on the operation and application of
calling number identification circuits. The MT8841
Calling Number Identification Circuit (CNIC) will be
discussed in detail and its use illustrated in the
application examples which follow.
Everyone, at some time, has rushed to answer a
ringing phone only to have the caller hang up. We
have all had a persistent salesman (or a talkative
friend) call our office or home and interrupt us at the
wrong time. Many of us have had to sit and listen to
elevator music while someone on the other end of
the line attempts to bring up information about our
account. By allowing call screening and quick access
to databases before the phone is answered, Caller
ID (CID) promises a cure for many of the annoying
telephone problems that beset us.
In a caller ID system, a coded version of the calling
number is sent from the central office to the called
phone where it appears on a small liquid crystal
display (LCD). For both residential and office
phones, the subscriber will know who is calling
(provided it is a known number) and be able to
screen the calls. In more sophisticated applications,
when the line is connected to a computer, the
computer can use the number to search a database
and display information about the individual calling.
ISSUE 1
August 1993
MSAN-144
Applications of the MT8841 Calling
Number Identification Circuit
Application Note
相關PDF資料 |
PDF描述 |
|---|---|
| MT8860 | DTMF DECODER |
| MT8860XC | DTMF DECODER |
| MT8860XE | DTMF DECODER |
| MT8865 | DTMF Filter |
| MT8865XC | DTMF Filter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MT8840 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Data Over Voice Modem |
| MT8840-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Data Over Voice Modem |
| MT8840AE | 制造商:Rochester Electronics LLC 功能描述: 制造商:MITEL / ZARLINK 功能描述: 制造商:Zarlink Semiconductor Inc 功能描述: |
| MT8840AS | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Data Over Voice Modem |
| MT8841 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS Calling Number Identification Circuit |
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