Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Telephone interexchange call routing

Telephone interexchange call routing

US Patent 4577066 · Granted Mar 18, 1986

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method and apparatus for rerouting terminations for CALEA targets through a pred2008
Radio channel allocation for national security and emergency preparedness calls2007
Apparatus, method and system for maintaining call control at a gateway mobile sw2006
Wireless priority service for intersystem call delivery2006
Methods and apparatus for accessing enhanced wireless services platforms via the2001
Method for providing ubiquitous service to mobile subscribers using a wireless g2000
Serving cellular calls to stations at the boundary between switch serving areas1995
Method for customer definable telephone capability1986
Telephone office service assist and handoff1986
Telephone interexchange carrier selection1986