-
Method of connecting calls
-
Patent number 6,671,366
-
Issue date Dec 30, 2003
-
Helsingin Puhelin Oyj-Helsingfors Telefon ABP
-
Lauri Isotalo
-
H04 - ELECTRIC COMMUNICATION TECHNIQUE
-
-
-
-
-
-
-
Flexible direct signaling system
-
Patent number 5,943,408
-
Issue date Aug 24, 1999
-
Lucent Technologies Inc.
-
Kuo-Wei Herman Chen
-
H04 - ELECTRIC COMMUNICATION TECHNIQUE
-
-
-
-
-
-
-
-
-
Feature interaction manager
-
Patent number 5,404,396
-
Issue date Apr 4, 1995
-
Telefonaktiebolaget LM Ericsson
-
Steven Brennan
-
H04 - ELECTRIC COMMUNICATION TECHNIQUE
-
Customer programmable real-time system
-
Patent number 4,747,127
-
Issue date May 24, 1988
-
American Telephone and Telegraph Company, AT&T Bell Laboratories
-
Terris L. Hansen
-
G06 - COMPUTING CALCULATING COUNTING