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

Thjuan P. Knowlin

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Advanced conference drop

Telephonic communications – Special services – Conferencing
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Apparatus and method for deploying and updating services in...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling
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Apparatus, method and system for providing conditional...

Telephonic communications – Special services – Call diversion
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Cable connected network server platform for telephone...

Telephonic communications – Special services – Automatic directory service
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Call center system

Telephonic communications – Centralized switching system – Call distribution to operator
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Profile ID: LFUS-PAI-P-2077347

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