4. Telephonic communications
  5. Plural exchange network or interconnection
  6. Interexchange signalling

Ralph S. Smith

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Apparatus and method for enabling a network interface to dynamic

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
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Simultaneous transfer of control information with voice and data

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling
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Profile ID: LFUS-PAI-P-1485377

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