System and method for on-line insertion of line replaceable units in wireless and wireline access systems
First Claim
1. A system for the on-line insertion of a line replaceable unit into a backplane of an item of electronic equipment, wherein said backplane comprises a common control bus and at least one of(a) one or more additional control buses,(b) one or more operations buses, and(c) one or more traffic buses,said system comprising:
- a primary master controller inserted into said backplane, said primary master controller capable of communicating via said common control bus of said backplane with said line replaceable unit when said line replaceable unit is inserted into said backplane;
wherein said line replaceable unit is partially powered but does not have full access to all buses in said backplane or access to full power when said line replaceable unit is first inserted into said backplane; and
wherein said primary master controller controls full access by said line replaceable unit to remaining buses in said backplane and to full power.
5 Assignments
0 Petitions
Accused Products
Abstract
On-line insertion of line replaceable units (such as circuit board cards) into a backplane of a processor shelf, a modem shelf, or a similar type of equipment utilizes at least one interface control processor card that is capable of functioning as a primary master controller to control the insertion of circuit board cards into the backplane. Circuit board cards that are newly inserted into the backplane do not automatically have access to full power, or to the buses, or to other cards in the backplane. A newly inserted circuit board card remains isolated until the primary master controller checks, configures, and authorizes the newly inserted circuit board card to operate. A secondary master controller is provided to function as the primary master controller if the primary master controller fails. An automated boot procedure is provided to enable a circuit board card to determine whether it is a master controller, and if so, whether it is a primary master controller or a secondary master controller.
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Citations
20 Claims
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1. A system for the on-line insertion of a line replaceable unit into a backplane of an item of electronic equipment, wherein said backplane comprises a common control bus and at least one of
(a) one or more additional control buses, (b) one or more operations buses, and (c) one or more traffic buses, said system comprising: -
a primary master controller inserted into said backplane, said primary master controller capable of communicating via said common control bus of said backplane with said line replaceable unit when said line replaceable unit is inserted into said backplane; wherein said line replaceable unit is partially powered but does not have full access to all buses in said backplane or access to full power when said line replaceable unit is first inserted into said backplane; and wherein said primary master controller controls full access by said line replaceable unit to remaining buses in said backplane and to full power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. For use in association with a backplane of an item of electronic equipment wherein said backplane comprises a common control bus, one or more additional control buses, one or more operations buses, and one or more traffic buses, a method for the on-line insertion of a line replaceable unit into said backplane, said method comprising:
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inserting a primary master controller into said backplane; inserting said line replaceable unit into said backplane so that said line replaceable unit is partially powered but does not have full access to all buses in said backplane or access to full power when said line replaceable unit is first inserted into said backplane; and controlling the access of said line replaceable unit to remaining buses in said backplane and full power with said primary master controller. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. For use in association with a backplane of an item of electronic equipment wherein said backplane comprises a common control bus, one or more additional control buses, one or more operations buses, and one or more traffic buses, a method for the on-line insertion of a line replaceable unit into said backplane, said method comprising:
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inserting a circuit board card into said backplane; providing a controlled power ramp up of partial power to said inserted circuit board card without activating connection of said inserted circuit board to any of said common control bus, one or more additional control buses, one or more operations buses, and one or more traffic buses; determining whether a voltage rail has failed; starting a reset timer; running a power on self test on said inserted circuit board card; determining whether said inserted circuit board card passed said power on self test; activating connection of said inserted circuit board to said common control bus to determine whether said inserted circuit board or another circuit board inserted into said backplane should control access by the inserted circuit board to full power and to said one or more additional control buses, one or more operations buses, and one or more traffic buses. - View Dependent Claims (19, 20)
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Specification