H ELECTRICITY
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H04 ELECTRIC COMMUNICATION TECHNIQUE
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H04Q SELECTING
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H04Q11/00 Selecting arrangements for multiplex systems
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H04Q11/0001 using optical switching
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H04Q11/0062 Network aspects
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H04Q2011/0077 Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS
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