LandOfFree - US Patents - Listing for Telephonic communications

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

Parallel computer network and method for telecommunications...

Telephonic communications – Plural exchange network or interconnection

Parallel data transfer and synchronization

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

Parallel handset on-hook/off-hook detection by...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Parallel off hook detector for electronic remote data recorder

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

Parallel off-hook detection for both line-available and phone pi

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Parallel phone detection circuit

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Parallel split powering

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

Parallel-connected dialing signal transmission inhibiting...

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

Parallel-connected dialing signal transmission-inhibiting device

Telephonic communications – Subscriber line or transmission line interface

Parallel-connected telephone use determining circuit in a cordle

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

Parking management system

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

Partial voice message deletion

Telephonic communications – Special services – Anonymous party

Partially replicated database for a network of store-and-forward

Telephonic communications – Reception of calling information at substation in wireline... – Blocking caller id transmission

Partitioning of display for calling party numbers

Telephonic communications – Reception of calling information at substation in wireline... – Blocking caller id transmission

Partitioning of display for calling party numbers

Telephonic communications – Polystation line system – Revertive call

Party line converter

Telephonic communications – Call or terminal access alarm or control – At substation

Party selecting circuit arrangement

Telephonic communications – Special services – Call blocking

Passive call blocking method and apparatus

Telephonic communications – Special services – Call blocking

Passive call blocking method and apparatus