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US5982767A
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Merged telephone and data network
Assignee: Mitel Networks Corp
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Filing: 1997-03-27
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Granted: 1999-11-09
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Expires: 2017-03-27
Abstract
Abstract A merged voice and data communications system, comprises a TDM-based broadband backbone carrying packet data, a plurality of LAN segments interconnected via said broadband backbone, a plurality of telephone subsystems, each comprising a plurality of telephone circuits connected to a subsystem multiplexer, and a central telephone controller. Circuits are established to carry telephone traffic over said broadband backbone between the central controller and several subsystem multiplexers independently of the packet data. Telephone calls can be routed over the broadband backbone to any of the telephone circuits without interfering with the packet data and without requiring separate physical links.
Inventors
- 👤 Evan McIntosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:54
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5638; H04L2012/5646; H04L2012/5651; H04L2012/5671
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A merged voice and data communications system, comprising a TDM-based broadband backbone carrying packet data; a plurality of LAN segments interconnected via said broadband backbone; a plurality of telephone subsystems, each comprising a plurality of telephone circuits connected to a subsystem multiplexer; a central telephone controller; and means for establishing circuits to carry telephone traffic over said broadband backbone between said central controller and said several subsystem multiplexers independently of said packet data; whereby telephone calls can be routed over said broadband backbone to any of said telephone circuits without interfering with the packet data.
Claim 2
Dependent Claim
95 words
A merged voice and data communications system, comprising a TDM-based broadband backbone carrying packet data; a plurality of LAN segments interconnected via said broadband backbone; a plurality of telephone subsystems, each comprising a plurality of telephone circuits connected to a subsystem multiplexer; a central telephone controller; and means for establishing circuits to carry telephone traffic over said broadband backbone between said central controller and said several subsystem multiplexers independently of said packet data; whereby telephone calls can be routed over said broadband backbone to any of said telephone circuits without interfering with the packet data.
Claim 3
Dependent Claim
33 words
A merged voice and data network as claimed in claim 1, wherein bandwidth is reserved for telephone traffic over the broadband backbone to create circuits between said central controller and said subsystem multiplexers.
Claim 4
Dependent Claim
17 words
A merged voice and data network as claimed in claim 2, wherein said circuits are TDM channels.
Claim 5
Dependent Claim
23 words
A merged voice and data network as claimed in claim 1, wherein said circuits are permanent virtual channels established over an ATM network.
Claim 6
Dependent Claim
31 words
A merged voice and data network as claimed in claim 1, wherein each telephone subsystem includes a telephony controller cooperating with said central controller and communicating therewith over said broadband backbone.
Claim 7
Dependent Claim
22 words
A merged voice and data network as claimed in claim 5, wherein said telephony controller is connected to the associated subsystem multiplexer.
Claim 8
Dependent Claim
30 words
A merged voice and data network as claimed in claim 1, wherein said subsystem multiplexer includes an interface circuit for mapping telephone serial links into timeslots in a TDM frame.
Claim 9
Dependent Claim
19 words
A merged voice and data network as claimed in claim 7, wherein said TDM frame is a SONET frame.
Claim 10
Dependent Claim
20 words
A merged voice and data network as claimed in claim 8, wherein said serial links are multiplexed with ATM cells.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-08 | 2003-05-10 | 2003-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-08 | 2007-05-10 | 2007-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-08 | 2011-05-10 | 2011-11-09 | $7700.00 | Window Closed / Lapsed |