LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Special services – Service trigger

Call control in intelligent network

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

Call control management system

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...

Call control method and apparatus for a switching system

Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network

Call control of a distributed processing communications switchin

Telephonic communications – Echo cancellation or suppression – Disable or inhibit function

Call control of ancillary telecommunications equipment using...

Telephonic communications – Special services

Call control presence

Telephonic communications – With usage measurement – Call charge metering or monitoring

Call control strategy for high capacity telecommunication servic

Telephonic communications – Centralized switching system – Call distribution to operator

Call control system and method

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

Call control system in an intelligent network

Telephonic communications – Private or single line system – Doorbell system

Call controlling apparatus and method used for an order-wire...

Telephonic communications – With usage measurement – Call charge metering or monitoring

Call conversion process for a business system for a global telec

Telephonic communications – Multi-line or key substation system with selective switching... – With special service

Call coverage arrangement

Telephonic communications – Special services – Anonymous party

Call coverage arrangement in an ISDN switching system

Telephonic communications – With usage measurement – Call charge metering or monitoring

Call data collection and modification of received call distribut

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation

Call deferral system for telephones

Telephonic communications – Audio message storage – retrieval – or synthesis

Call delivery service within a radiotelephone communication syst

Telephonic communications – With usage measurement – Call traffic recording or monitoring

Call detail record for internet call waiting

Telephonic communications – With usage measurement – Call traffic recording or monitoring

Call detail record for internet call waiting

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Monitoring

Call detail reporting for lawful surveillance