Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Multi-port caller ID-based telephone ringback test device

Multi-port caller ID-based telephone ringback test device

US Patent 5857011 · Granted Jan 5, 1999

Estimated economic value: $4,190,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Automatically configurable blind cutting center2020
Automatically configurable blind cutting center2010
Dynamic, automated double-ended system and method for testing and qualifying met2006
User selectable overlap and enbloc dialing of ISDN line2006
Remotely connected blind cutting center2005
Two-ended wireline pair identification system2001
User selectable overlap and enbloc dialing of2001
Call yourself BERT testing of2000
Telephone ringback test device and method1999
Call yourself BERT testing of1999
Method for testing call waiting, caller ID functionality of telephone line1999
Multi-port caller ID-based telephone ringback test device1998