| http://www.w3.org/ns/prov#value | - Voice and data switching network 6, under control of the CPU 10, transmits data among processor 8 and regional data base control 20, and transmits voice and data among data links coming into the system such as the data link 21 to the signaling network 23, data link 25 to the local telephone network 27 of the public switched telephone network and customer lines 4.
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