Data transmission over the public switched network
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 3, 1989
Issued Date -
N/A
app pub date -
Dec 8, 1987
filing date -
Dec 8, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A credit card authorization network which, among other advantages, allows telephone charges to be reduced. A credit card company, operating as an Interexchange Customer, provides trunk-protocol executing modems at a Feature Group B access facility. The modems are interfaced to the trunks, on a T1 digital link, by adapting FXS channel bank cards with a ground start option to translate between E&M signaling and ground start loop signaling.
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