LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Multi-line or key substation system with selective switching... – Line status indication or call alerting

Systems and methods for voice and data communications...

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

Systems and methods for wireless number portability solution...

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

Systems and methods for wireline ring tone service

Telephonic communications – Special services – Anonymous party

Systems and methods for work assignment and distribution from a

Telephonic communications – Audio message storage – retrieval – or synthesis – Dynamic audio signal recording or reproduction

Systems and methods of adding attachments to voice calls...

Telephonic communications – Special services – Call diversion

Systems and methods of establishing group calls

Telephonic communications – With check operated control – Other than coin

Systems and methods relating to multipurpose cards

Telephonic communications – Special services

Systems and methods to block communication calls

Telephonic communications – Plural exchange network or interconnection

Systems and methods to compare operational statuses of...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Systems and methods using secondary signal backchanneling

Telephonic communications – Special services – Anonymous party

Systems and processes for providing multiple interfaces for tele

Telephonic communications – Special services – Anonymous party

Systems and processes providing programmable or customized custo

Telephonic communications – Centralized switching system – Switching controlled in response to called station...

Systems configured to distribute a telephone call,...

Telephonic communications – Telephone line or system combined with diverse electrical... – Polling

Systems for capturing telephonic mass responses

Telephonic communications – Telephone line or system combined with diverse electrical... – Polling

Systems for capturing telephonic mass responses

Telephonic communications – Emergency or alarm communications

Systems for dialing an emergency telephone number from a...

Telephonic communications – Telephone line or system combined with diverse electrical... – Remote indication over telephone line

Systems for power interruption detection

Telephonic communications – Emergency or alarm communications – Responsive to sensed nonsystem condition

Systems for requesting service of a vending machine

Telephonic communications – Telephone line or system combined with diverse electrical... – Credit authorization

Systems for requesting services using card reading terminals