- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383641 > MT8870 (Mitel Networks Corporation) () PDF資料下載
參數(shù)資料
| 型號： | MT8870 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | () |
| 中文描述： | （） |
| 文件頁數(shù)： | 20/23頁 |
| 文件大?。?/td> | 177K |
| 代理商： | MT8870 |
MSAN-108
Application Note
A-64
With a similar arrangement, a travelling salesman
could access price, delivery and customer status,
enter or delete merchandise orders and retrieve
messages all from the comfort of the customer’s
office (Fig. 23a). A department store could provide
shop-by-phone service to its customers using
telephone keypad data entry (Fig. 23b). Brokerage
firms, utilizing the stock exchange mnemonic listings
could provide trading price information and buy/sell
service via telephone keypad entry. A voice
synthesizer could provide opening and current
trading price, volume of transactions and other
pertinent data. A telephone answering system
manufacturer could apply this technique, allowing
users to access and change outgoing and incoming
messages from a Touch-Tone phone.
A PBX manufacturer could offer a feature that
relieves the switchboard attendant from unneccesary
interaction. A call could be answered automatically
and a recording may reply ”Thank you for calling
XYZ. Please dial the extension you wish to contact
or zero for the switchboard“. If the caller knows the
called party’s extension in advance it is not
neccesary to wait for the switchboard attendant to
forward the call. The attendant could be notified to
intervene if there is no action by the caller say, ten
seconds after the recording ends. This provides a
similar function to a ”Direct Inward Dialling“ (DID)
trunk but without the additional overhead incurred
with renting a block of phone numbers as in the DID
case.
Now that a DTMF receiver is so easy and
inexpensive to implement there are many simple
dedicated uses that become attractive. A useful
home and office application for DTMF receivers is in
a self-contained telephone-line-powered toll call
restrictor similar to the block diagram in Fig. 2a. This
could be installed in an individual telephone or at the
incoming main termination depending on which
phone or phones are to be restricted. While
disallowing visitors from making unauthorized long
distance calls, the owner may still desire access to
toll dialling. This could be provided by adding a logic
circuit that disables the toll restrictor upon receiving
a predetermined sequence of DTMF characters (Fig.
16). In this case, the user must enter his password
before dialling a long distance number.
Figure 23 - Two Applications Of DTMF Data Communications
OUTSIDE SALES
PERSON AT
CUSTOMER’S
TELEPHONE
CONSUMER AT
HOME PHONE
SALES WAREHOUSE/OFFICE
CATALOGUE SHOPPING WAREHOUSE
AUTO
ANSWER/
LINE
TERMINATION
MT8870
DTMF
RECEIVER
ORDER ENTRY
COMPUTER
STOCK/PRICE/
DELIVERY
ALGORITHM
SPEECH
SYNTHESIZER
OPTIONAL
AUTO
DIALER
AUTO
ANSWER/
LINE
TERMINATION
MT8870
DTMF
RECEIVER
ORDER ENTRY
COMPUTER
STOCK/PRICE/
DELIVERY
ALGORITHM
SPEECH
SYNTHESIZER
(a)
(b)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8880C | ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CE-1 | ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CC | ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CE | ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CN | ISO2-CMOS Integrated DTMFTransceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8870BE | 制造商:Panasonic Industrial Company 功能描述:RECEIVER |
| MT8870D | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMF Receiver |
| MT8870DC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMF Receiver |
| MT8870DC-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMF Receiver |
| MT8870DE | 制造商:Microsemi Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。