Digital line card having universal port for upgrading electronic messaging system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 26, 1995
Issued Date -
N/A
app pub date -
Jun 11, 1993
filing date -
Dec 11, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A digital line card is provided for use in an electronic messaging system for enabling the receipt of voice and text or image data over a single communications port. The digital line card includes a digital signal processing integrated circuit, a microprocessor and a random access memory component for storing coding schemes employed by the digital signal processing integrated circuit. The digital line card is programmed to detect the presence of dual-tone multifrequency command signals in the incoming data stream, and to switch between voice and data processing responsive to the command signals.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully