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

Jyrki Penttonen

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Method and apparatus for implementing services in telephone netw

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling
Patent

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Method for relocating a subscriber in a voice messaging system

Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
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Profile ID: LFUS-PAI-P-1520714

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