US4823338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Virtual local area network
Assignee: Avaya Technology LLC
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Filing: 1987-08-03
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Granted: 1989-04-18
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Expires: 2007-08-03
Abstract
Abstract A system is disclosed for completing communication connections from end-users served by a connectionless (broadcast) type system in a manner which allows expansion of the calling area beyond the immediate physical limitations of the broadcast media. The system is based upon a device for mediating between the connectionless system and a connection oriented system. The device creates logical local area networks interconnectable by the connection oriented system. Calling user identification is used in conjunction with call completion data stored in a central memory for controlling all interconnections.
Inventors
- 👤 Kenneth K. Chan
- 👤 Philip W. Hartmann
- 👤 Scott P. Lamons
- 👤 Terry G. Lyons
- 👤 Argyrios C. Milonas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:47
CPC Classifications
H; H04; H04L; H04L41/00; H04L41/26; H04L12/00; H04L12/28; H04L12/46; H04L12/4641; Y; Y10; Y10S; Y10S370/00; Y10S370/908
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
A device for controlling communications between a plurality of end-systems, said device comprising means for establishing one or more groups of end-systems, each of said established groups identifying each end-system authorized to be a member thereof, means for receiving first information from a calling one of said end-systems, said first information including an identification of this end-system and a request for membership in one of said established groups, means responsive to said first information and to said one or more established groups for granting said request if and only if said calling end-system is an authorized member of the group requested, and means responsive to second information from said calling end-system and to the granting of said request for controlling communications between this calling end-system and called one of said end-systems identified in said second information.
Claim 2
Independent Claim
136 words
A device for controlling communications between a plurality of end-systems, said device comprising means for establishing one or more groups of end-systems, each of said established groups identifying each end-system authorized to be a member thereof, means for receiving first information from a calling one of said end-systems, said first information including an identification of this end-system and a request for membership in one of said established groups, means responsive to said first information and to said one or more established groups for granting said request if and only if said calling end-system is an authorized member of the group requested, and means responsive to second information from said calling end-system and to the granting of said request for controlling communications between this calling end-system and called one of said end-systems identified in said second information.
Claim 3
Dependent Claim
31 words
The device of claim 1 wherein said controlling means couples communications between said calling and called end-systems if and only if these end-systems are within the same established group of end-systems.
Claim 4
Dependent Claim
36 words
The device of claim 1 wherein said establishing means establishes a plurality of groups of end-systems and said communications controlling means prevents communications between said calling and called end-systems when these end-systems are within different groups.
Claim 5
Dependent Claim
38 words
The device of claim 1 wherein said device further comprises means for determining whether there is communication compatibility between said calling and called end-systems and for preventing communications between calling and called end-systems if a communication incompatibility exists.
Claim 6
Dependent Claim
15 words
The device of claim 4 wherein said communication incompatibility results from unlike communication establishment protocols.
Claim 7
Dependent Claim
34 words
The device of claim 1 wherein said second information includes an identification of other called ones of said end-systems and said controlling means controls communication between said calling end-system and said other called end-systems.
Claim 8
Dependent Claim
26 words
The device of claim 1 wherein said establishing means includes means for specifying at least one group as an authorized group for each of said end-systems.
Claim 9
Dependent Claim
31 words
The device of claim 1 wherein said controlling means includes means for sending special instructions pertaining to communications between said calling and calling end-systems, said special instructions pertaining to communication completion.
Claim 10
Dependent Claim
18 words
The device of claim 8 wherein the special instructions sent to said calling and called end-systems are identical.
Claim 11
Dependent Claim
41 words
The device of claim 1 further including a communication switch operating in a connection oriented mode, means for connecting said connection oriented switch to said end-systems which operate in a connectionless mode, and means for connecting said switch to said device.
References Cited (Backward Citations)
US4718068A
Cited
US4707827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |