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Personal dial tone service with personalized call waiting

Telephonic communications – Special services – Call waiting
Reexamination Certificate

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Polite call waiting notification

Telephonic communications – Special services – Call waiting
Reexamination Certificate

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Process, service computer, switching centre, terminals and...

Telephonic communications – Special services – Call waiting
Reexamination Certificate

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Program-controlled communication system whereby a call request i

Telephonic communications – Special services – Call waiting
Patent

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Provision of media content to telephony callers on-hold

Telephonic communications – Special services – Call waiting
Reexamination Certificate

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