4. Telephonic communications
  5. Special services
  6. Service trigger

Oliver Schreyer

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Communication system having switchably-coupled subscriber termin

Telephonic communications – Special services – Service trigger
Patent

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Telecommunication network with least cost routing

Telephonic communications – Plural exchange network or interconnection – With interexchange network routing
Reexamination Certificate

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Telecommunication system with loop-free switching tables

Telephonic communications – Special services – Service trigger
Patent

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Profile ID: LFUS-PAI-P-1347239

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