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參數(shù)資料
| 型號： | NT91215C |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Tone/Pulse Dialer |
| 中文描述： | 音頻/脈沖撥號器 |
| 文件頁數(shù)： | 12/23頁 |
| 文件大小： | 223K |
| 代理商： | NT91215C |
NT91214/15 Series
12
V1.0
3. Manual dialing with automatic access pause
a. Off Hook O P D1 . . . Dn
pause key entries can be accepted and stored in the
redial memory. Each is stored as a digit.
Each key-in will provide a pause of 3.57 seconds,
depending on which model is being used.
4. Redial
a. On Hook RD or On Hook
HFI
↓
RD
Up to 32 digits (in PULSE mode) or 31 digits
(in TONE mode) can be dialed using the RD key.
The RD key is disabled while PULSE or TONE
signals are being transmitted. Redial will also be
inhibited if the last number dialed exceeds 32 digits
because the redial memory can only hold 32 digits.
b. Off Hook RD D1 . . . Dn or On Hook
HFI
↓
RD D1 . . . Dn
After pressing the RD key, digits may be added to
the number in redial memory. When finished
dialing,
the redial memory will contain the original digits,
plus the digits dialed after pressing RD . Each time
the redial key is pressed, the stored number will be
dialed exactly the same as it was previously,
regardless of the status of the MODE IN pin.
5. TONE/PULSE switching operation
a. On Hook D1 . . . Dn MODE IN pin
PULSE Mode
switched to VSS Dn+1 . . . Dn+m
DTMF Mode
The mode selection pin is alwsys checked for TONE
or PULSE mode key entry. Dialing can be switched
from PULSE to TONE mode, but not from TONE to
PULSE mode. Switching the MODE IN pin to the
original digits plus the digits dialed after pressing
will
cause the chip to store a */T digit prior to the first
tone digit in the redial memory and will automatically
insert a 2.2 second pause before the tone digits are
dialed out. After the mode bas been switched, the
status of the mode selection pin will no longer be
checked. Therefore, it will not be possible to switch
from TONE to PULSE mode.
b. Off Hook D1 . . . Dn */T Dn+1
PULSE Mode
. . . Dn+m
DTMF Mode
PULSE mode is initially defined with the mode
selection pin, MODE IN, equal to VDD or floating. At
this time, the mode can be switched to DTMF by
pressing the */T key. DTMF mode will being as soon
as the last pulse has been transmitted. In this mode,
Dn+1 through Dn+m are sent through the TONE
OUT pin as DTMF signals. If a P key entry is
Contained in the series of digits before or after the */T
entry, or the MODE IN switch is depressed, 2.2
second
pause will be added to the automatically inserted
pausetime, which is also 3.57 seconds. Both of the
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