Assignee
NETWORK ACCESS CORP
US7 patents
Top patents by PatentIndex Score
US5416780AMay 16, 1995
Telecommunications system and protocol for avoiding message collisions on a multiplexed communications link
NETWORK ACCESS CORP163 citations98
US5315636AMay 24, 1994
Personal telecommunications system
NETWORK ACCESS CORP450 citations98
US5086461AFeb 4, 1992
Apparatus and method for providing existing 1ESS and 1AESS telephone switching equipment with the capability of using the SS7 protocol
NETWORK ACCESS CORP102 citations94
US4903263AFeb 20, 1990
Apparatus and method for providing existing telephone switching equipment with integrated services digital network capability
NETWORK ACCESS CORP27 citations92
US4853955AAug 1, 1989
Apparatus and method for providing existing telephone switching equipment with the capability of using the SS7 protocol
NETWORK ACCESS CORP98 citations91
US4782519ANov 1, 1988
Method and apparatus for enhancing the operating capabilities of a telephone switching system
NETWORK ACCESS CORP114 citations91
US5233643AAug 3, 1993
Method and system network for providing an area with limited bandwidth bi-direction burst personnel telecommunications
NETWORK ACCESS CORP48 citations86