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Automated directory assistance system utilizing priori advisor f

Telephonic communications – Plural exchange network or interconnection – Toll center
Patent

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Automated toll-free telecommunications information service...

Telephonic communications – Plural exchange network or interconnection – Toll center
Reexamination Certificate

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Economical call processing system and method, such as for...

Telephonic communications – Plural exchange network or interconnection – Toll center
Reexamination Certificate

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Method and arrangement for integrating intelligent network servi

Telephonic communications – Plural exchange network or interconnection – Toll center
Patent

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Method of and system for providing network-initiated...

Telephonic communications – Plural exchange network or interconnection – Toll center
Reexamination Certificate

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System and method for establishing long distance call...

Telephonic communications – Plural exchange network or interconnection – Toll center
Reexamination Certificate

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