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An Entity of Type : prov:Entity, within Data Space : webisadb.webdatacommons.org associated with source dataset(s)

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  • The switch controller provides an interface between the public switch telephone network (PSTN) and an ISN. The ISN provides specialized call handling for enhanced services such as operator services, 1-800-COLLECT, and 1-800-MUSICNOW. In addition, the ISN provides access to databases and other networks.
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