<http://webisa.webdatacommons.org/154801774>	<http://www.w3.org/ns/prov#value>	"There are two different types of channels, the `B Channels' which will actually carry the user data and a single channel called the `D channel' which is used to send control information to the ISDN exchange to establish calls and other functions." .
<http://webisa.webdatacommons.org/154801774>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/455307756>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/154801774> .
<http://webisa.webdatacommons.org/154801774>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wikibooks.org> .