home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Simtel MSDOS 1992 September
/
Simtel20_Sept92.cdr
/
msdos
/
arc_lbr
/
aview38.arc
/
DIGIFONE.TXT
< prev
next >
Wrap
Text File
|
1989-12-06
|
3KB
|
58 lines
The DigiPhone is my first hardware product. It is the result of my
senior project at Cal Poly. I am building a batch of them this
summer and will be marketing them in August (1989). Included below
is the abstract from the senior project report. Please let me know
if you would be interested in something like this. Currently, I
have it installed on my BBS number and interfaced with Perspective
BBS. Just call my BBS voice and press "0" (touch-tone) within the
first 5 seconds to get a demonstration of the DigiPhone.
ABSTRACT
The DigiPhone
An IBM PC Voice Mail Card
The DigiPhone functions as an enhanced telephone
answering machine and is designed as a plug in card for
the IBM PC and compatibles. In addition to standard
answering machine functions, the DigiPhone features
programmable outgoing message selection, message routing,
response to caller's touch tone signals, and remote
programming ability.
The DigiPhone will answer incoming telephone calls,
deliver outgoing messages which are programmably
selectable from as many as 16 digitized audio messages
stored on the PC's hard disk, record incoming messages to
the hard disk or optionally to an external tape recorder,
route messages to a specified receiver, respond to a
caller's touch tone signals, and enter a remote
programming mode as a result of a special code sent by the
caller.
Audio messages are processed digitally via A/D and
D/A converters which receive and send 8 bit data to and
from the IBM PC through a selectable port address. A/D
conversion is implemented with the ADC0802 which is
operated at a clock rate of 512 Khz (corresponding to a
conversion rate of 8 Khz). D/A conversion is implemented
with the DAC0830. Interface with the telephone line is
accomplished with the speech circuit TP5700 coupled
through opto-couplers. Messages are recorded using an
external 600 ohm dynamic microphone and played back
through an external 8 ohm speaker.
A full featured pull-down menu program is provided
with the DigiPhone and implements all programmable
functions. Data I/O with the card is interrupt driven to
allow apparent simultaneous disk I/O.
Production of the DigiPhone is planned for July, 1989
with distribution planned for August, 1989. Retail price
will be less than $200.
Daniel Durbin___________________________________________________
SysOp: Cygnus X-1 BBS | CIS: 73447,1744
| GEnie: D.DURBIN