EP0707432A2
Expired / Lapsed
EP
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Communication system topology providing dynamic allocation of B-channels
Assignee: AT&T Inc
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Filing: 1995-10-03
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Granted: —
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Expires: 2015-10-03
Abstract
Abstract Communications systems and methods are directed to a novel communications platform which employs a TDM bus, a TDM bus controller, a passive Ethernet bus, and a centralized Ethernet hub to provide for the communication of data, voice, and/or video signals among a plurality of endpoint devices. The TDM bus controller provides a plurality of B-Channels on the TDM bus. The centralized Ethernet hub is coupled to the TDM bus controller via a control link. Each endpoint device is connected to at least one of the passive Ethemet bus and the TDM bus. The centralized Ethernet hub operates over the passive Ethernet bus to dynamically allocate one or more individual B-Channels of a single B-Channel set amongst a group of endpoint devices, such as telephone equipment, video communications equipment, processors, and/or computing devices. The centralized Ethernet hub provides a logical control channel to each endpoint device for call establishment. Each endpoint device is coupled to the logical control channel over at least one of a first path comprising the passive Ethernet bus and a second path comprising the TDM bus, the TDM bus controller, and the control link. The logical control channel executes B-channel seizure algorithms for establishment of communications to and from selected endpoint devices.
Inventors
- 👤 William L. Aranguren
- 👤 Albert D. Baker
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 14:46
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04L; H04L12/00; H04L12/64; H04L12/6418; H04L2012/6432; H04L2012/6435; H04L2012/6445; H04L2012/6448; H04L2012/6454; H04L2012/6456; H04L2012/6475
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
57 words
A centralized Ethernet hub for controlling a passive bus characterized by: (a) channel allocation request receiver means responsive to a channel allocation request from an endpoint device; and (b) channel allocation means responsive to the channel allocation request receiver means for allocating one or more individual B-Channels of a B-Channel set amongst a plurality of endpoint devices.
Claim 2
Dependent Claim
153 words
A centralized Ethernet hub being adapted for use in a communication system characterized by: (a) a TDM bus adapted for connection to one or more endpoint devices; (b) a TDM bus controller for providing a set of B-Channels comprised of a plurality of time-division multiplexed B-Channels on the TDM bus; (c) a plurality of endpoint devices, each endpoint device characterized by channel allocation request means coupled to at least one of the passive bus and the TDM bus for requesting one or more B-Channels from the set of B-Channels; and (d) a control link for coupling the centralized Ethernet hub to the TDM bus controller; characterized in that the centralized Ethernet hub provides a plurality of Ethernet communication channels and includes channel allocation means responsive to the channel allocation request means of an endpoint device to allocate one or more individual B-Channels of a single B-Channel set amongst a plurality of endpoint devices.
Claim 3
Dependent Claim
36 words
A centralized Ethernet hub as set forth in Claim 2 further characterized in that the endpoint devices are selected from the group of: (a) telephone equipment, (b) video communications equipment, (c) processors, and (d) computing devices.
Claim 4
Dependent Claim
95 words
A centralized Ethernet hub as set forth in Claim 2 or Claim 3 further characterized by logical control channel means provides a logical control channel to each endpoint device for establishment of communications, each endpoint device being coupled to the logical control channel means over at least one of a first path characterized by the passive bus and a second path characterized by the TDM bus, the TDM bus controller, and the control link; the logical control channel means adapted to execute B-Channel seizure algorithms for establishment of communications to and from selected endpoint devices.
Claim 5
Dependent Claim
186 words
A communications system characterized by: (a) a TDM bus controller for providing a set of B-Channels comprised of a plurality of time-division multiplexed B-Channels on a TDM bus; (b) a centralized Ethernet hub for providing a plurality of Ethernet communication channels; the Ethernet hub characterized by channel allocation means responsive to a channel allocation request means of an endpoint device to allocate one or more individual B-Channels of the B-Channel set amongst a plurality of endpoint devices, and a centralized passive bus controller for controlling electronic communication on a passive Ethernet bus; and (c) a control link for coupling the centralized passive bus controller to the TDM bus controller; the communications system adapted for use in conjunction with: (i) a TDM bus adapted for connection to one or more endpoint devices; (ii) a passive Ethernet bus adapted for connection to one or more endpoint devices, and (iii) a plurality of endpoint devices, each endpoint device characterized by channel allocation request means coupled to at least one of the passive Ethernet bus and the TDM bus for requesting one or more B-Channels from the set of B-Channels.
Claim 6
Dependent Claim
100 words
A communications system as set forth in Claim 5 characterized in that the centralized passive bus controller further includes logical control channel means for providing a logical control channel to each endpoint device for establishment of communications, each endpoint device being coupled to the logical control channel means over at least one of a first path characterized by the passive Ethernet bus and a second path characterized by the TDM bus, the TDM bus controller, and the control link; the logical control channel means adapted to execute B-Channel seizure algorithms for establishment of communications to and from selected endpoint devices.
Claim 7
Dependent Claim
170 words
A communications system characterized by: (a) a TDM bus adapted for connection to one or more endpoint devices; (b) a TDM bus controller for providing a set of B-Channels comprised of a plurality of time-division multiplexed B-Channels on the TDM bus; (c) a passive Ethernet bus adapted for connection to one or more endpoint devices; (d) a centralized Ethernet hub for providing a plurality of Ethernet communication channels; and (e) a control link for coupling the centralized Ethernet hub to the TDM bus controller; the centralized Ethernet hub characterized by channel allocation means responsive to the channel allocation request means of the endpoint devices to allocate one or more individual B-Channels of a single B-Channel set amongst the plurality of endpoint devices; the communications system adapted for use in conjunction with a plurality of endpoint devices, each endpoint device characterized by channel allocation request means coupled to at least one of the passive Ethernet bus and the TDM bus for requesting one or more B-Channels from the set of B-Channels.
Claim 8
Dependent Claim
47 words
A communications system as set forth in any of claims 5 to 7, further characterized by a plurality of endpoint devices, further characterized in that the endpoint devices are selected from the group of: (a) telephone equipment, (b) video communications equipment, (c) processors, and (d) computing devices.
Claim 9
Dependent Claim
100 words
A communications system as set forth in Claim 7, further characterized in that the centralized Ethernet hub further includes logical control channel means for providing a logical control channel to each endpoint device for establishment of communications, each endpoint device being coupled to the logical control channel means over at least one of a first path characterized by the passive Ethernet bus and a second path characterized by the TDM bus, the TDM bus controller, and the control link; the logical control channel means adapted to execute B-Channel seizure algorithms for establishment of communications to and from selected endpoint devices.
Claim 10
Dependent Claim
222 words
A communications system characterized by: (a) a TDM bus adapted for connection to one or more endpoint devices; (b) time-division multiplex controller means for providing a plurality of time-division multiplexed B-Channels on the TDM bus; (c) centralized Ethernet hub means for providing a plurality of Ethernet communications channels; and (d) a control link coupling the centralized Ethernet hub means to the TDM bus controller means; the Ethernet hub, the TDM bus, the centralized Ethernet hub means, the control link, and the time-division multiplex controller means together characterized by dynamic B-Channel allocation means for allocating a single B-Channel set consisting of a plurality of B-Channels among a plurality of endpoint devices such that the B-Channel set is shared among the plurality of endpoint devices; the dynamic B-Channel allocation means being coupled to the B-Channel bus and capturing selected ones of said B-Channels in response to the channel allocation request means of an endpoint device for establishing a communications link between a plurality of endpoint devices; the communications system adapted for use in conjunction with a plurality of endpoint devices, each endpoint device being adapted for connection to any of the Ethernet hub and the TDM bus; at least one endpoint device characterized by channel allocation request means coupled to the Ethernet hub for establishing a communications link between a plurality of endpoint devices.
Claim 11
Dependent Claim
27 words
A communications system as set forth in Claim 10 further characterized in that the B-Channel set includes a number of B-Channels in the range of 48-192, inclusive.
Claim 12
Dependent Claim
19 words
A communications system as set forth in Claim 11 further characterized in that each B-Channel set includes 96 B-Channels.
Claim 13
Dependent Claim
149 words
A communications system characterized by: (a) a TDM bus; (b) a TDM bus controller for providing a set of B-Channels comprised of a plurality of time-division multiplexed B-Channels on the TDM bus; (c) a passive Ethernet bus; (d) a centralized Ethernet hub for providing a plurality of Ethernet communication channels on the passive Ethernet bus; (e) a plurality of endpoint devices, each endpoint device characterized by channel allocation request means coupled to at least one of the passive Ethernet bus and the TDM bus for requesting one or more B-Channels from the set of B-Channels; and (f) a control link for coupling the centralized Ethernet hub to the TDM bus controller; the centralized Ethernet hub characterized by channel allocation means responsive to the channel allocation request means of the endpoint devices to allocate one or more individual B-Channels of a single B-Channel set amongst the plurality of endpoint devices.
Claim 14
Dependent Claim
212 words
A communication system characterized by: (a) a TDM bus; (b) a passive Ethernet bus; (c) a plurality of endpoint devices, each endpoint device being adapted for connection to any of the TDM bus and the passive Ethernet bus, at least one endpoint device characterized by channel allocation request means coupled to the Ethernet bus for establishing a communications link between a plurality of endpoint devices; (d) time-division multiplex controller means for providing a plurality of time-division multiplexed B-Channels on the TDM bus; (e) centralized Ethernet hub means for providing a plurality of Ethernet communications channels on the Ethernet bus; and (f) a control link coupling the centralized Ethernet hub means to the TDM bus controller means; the TDM bus, the centralized Ethernet hub means, the control link, and the time-division multiplex controller means together characterized by dynamic B-Channel allocation means for allocating a single B-Channel set consisting of a plurality of B-Channels among a plurality of endpoint devices such that the B-Channel set is shared among the plurality of endpoint devices; the dynamic B-Channel allocation means being coupled to the B-Channel bus and capturing selected ones of said B-Channels in response to the channel allocation request means of an endpoint device for establishing a communications link between a plurality of endpoint devices.
Claim 15
Dependent Claim
54 words
The communications system of any of any of Claims 10 to 12 or Claim 14 further characterized in that the channel allocation means includes control software distributed amongst a plurality of endpoint devices to provide an endpoint device to endpoint device communications structure that does not require logical switching means connected between endpoint devices.
Claim 16
Dependent Claim
67 words
The communications system of any of Claims 10 to 12 or Claim 14 further characterized in that the communications hub means further includes Ethernet repeater means for providing a dedicated logical control channel on the communications trunk means for establishing communications with at least one endpoint device, such that the logical control channel executes channel seizure algorithms for establishment of communications to and from selected endpoint devices.
References Cited (Backward Citations)
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