LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Reception of calling information at substation in wireline... – Caller location indication

Decoding and processing system for advanced determination...

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

Decreased-size representation employed with portion of...

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

Dedicated data modem system and method

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

Dedicated data modem system and method

Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy

Dedicated line eliminator for facsimile/telephone systems

Telephonic communications – Supervisory or control line signaling – Substation originated

Deformable membrane keypad assembly for public telephones

Telephonic communications – Centralized switching system – Call distribution to operator

Delay announcement group and time controller for a telephone sys

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

Delay insensitive base station-to-handset interface for radio te

Telephonic communications – Echo cancellation or suppression

Delay insertion for echo cancellation, with echo supression,...

Telephonic communications – Special services – Call waiting

Delayed cancel call waiting

Telephonic communications – Special services – Service profile

Delivering calls using calendar information

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

Delivery of customer data base key using automatic number identi

Telephonic communications – Special services – Service trigger

Delivery of display information to the caller in an advanced...

Telephonic communications – Audio message storage – retrieval – or synthesis – Message management

Delivery of urgent messages by integrated forced delivery...

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

Delivery-information management method and...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of trunk or long line

Design and architecture of an impairment diagnosis system...

Telephonic communications – Subscriber line or transmission line interface

Design of telephone line interface circuits using a two chip...

Telephonic communications – Call or terminal access alarm or control – At switching center

Designated channel terminating method and apparatus

Telephonic communications – Echo cancellation or suppression – Residual echo cancellation

Desired voice detection in echo suppression