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US 6,977,889 B1Granted
Cross-connect method and cross-connect apparatus
AssigneeFujitsu Limited
InventorsMitsuhiro Kawaguchi, Shigeo Tani
Life of this patent
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Abstract
There is described a cross-connect apparatus which can apply a cross-connect operation in place of a function of a hard switch that has conventionally been used for a purpose other than a cross-connect operation, by selection of line setting information used for path switching and service selection operations, and by performing a cross-connect operation based on the information, thereby preventing redundant configuration of the cross-connect apparatus and diminishing power consumption.
Claims7
A cross-connect method for performing a cross-connect operation on a main signal including a working channel signal transmitted over a working path and a protection channel signal transmitted over a protection path, said method comprising the steps of:
- retaining line setting information required for the cross-connect operation;
- detecting trigger information, causing a selection of one of the working path and the protection path, for an individual channel signal from said main signal;
- cross-connecting trigger information pieces detected for the individual channel signal according to said retained line setting information;
- and
- controlling the cross-connect operation on the main signal based on said retained line setting information and the cross-connected trigger information pieces so that one of the working channel signal and the protection channel signal is selectively output under the cross-connect operation for the main signal, whereby said cross connect operation is shared for cross-connecting based on retained line setting information and selective outputting of either said working channel signal or said protection channel signal.
2 more elements
A cross-connect apparatus comprising:
- a main signal cross-connect section for performing a cross-connect operation on a main signal including a working channel signal transmitted over a working path and a protection channel signal transmitted over a protection path;
- a memory section for retaining line setting information required for the cross-connect operation;
- a trigger information detecting section for detecting trigger information, causing a selection of one of the working path and the protection path, for an individual channel signal from said main signal;
- a trigger information cross-connect section for cross-connecting trigger information pieces detected by said trigger information detecting section for the individual channel signal according to the line setting information;
- and
- a cross-connect control section for controlling the cross-connect operation of the main signal cross-connect section, based on said retained line setting information of the memory section and the trigger information cross-connected by the trigger information cross-connect section so that one of the working channel signal and the protection channel signal is selectively output under the cross-connect operation of the main signal cross-connect section, wherein said cross connect operation is shared for cross-connecting based on retained line setting information and selective outputting of either said working channel signal or said protection signal.
3 more elements
A cross-connect apparatus comprising:
- a main signal cross-connect section for performing a cross-connect operation on a main signal including a working channel signal transmitted over a working path and a protection channel signal transmitted over a protection path;
- a memory section for retaining line setting information required for the cross-connect operation;
- and
- a cross-connect control section for controlling the cross-connect operation of the main signal cross-connect section, based on said line setting information so that one of the working channel signal and the protection channel signal is selectively output under the cross-connect operation of the main signal cross-connect section,
- wherein said cross-connect control section includes:
- an alarm detection section for detecting alarm information in the main signal;
- and
- an alarm information cross-connect section for cross-connecting the alarm information, detected by said alarm detection section, based on said line setting information retained in said memory section;
- and
- a switch control section for generating selection information specifying which one of the working signal and the protection signal should be selected for output under the main signal cross-connect operation, based on the line setting information and the cross-connected alarm information by said alarm information cross-connect section for outputting said selection information,
- said cross-connect operation for the main signal being operable to perform the main signal cross-connect operation based on said selection information output from said switch control section, and
- wherein said cross-connect control section further includes:
- a concatenation information detection section for detecting concatenation information relating to a combination of header data and subsequent data in the main signal;
- and
- a concatenation information cross-connect section for performing said cross-connect operation on said concatenation information, which has been detected by said concatenation information detection section, in accordance with said line setting information retained in the memory section,
- said switch control section being operable to generate selection information, based on said concatenation information as the result of the cross-connect operation of said concatenation information cross-connect section and said alarm information as the result of the cross-connect operation of said alarm information cross-connect section.
13 more elements
Dependencies are inferred from the claim text.