LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Call or terminal access alarm or control

Transparent telephone access system using voice authorization

Telephonic communications – Audio message storage – retrieval – or synthesis – Voice activation or recognition

Transparent voice registration and verification method and...

Telephonic communications – Centralized switching system – Structure of equipment

Transport apparatus for large network telecommunication equipmen

Telephonic communications – With check operated control – Other than coin

Transportable logic to facilitate a large calling card...

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

Transportable mobile cellular system

Telephonic communications – Supervisory or control line signaling – Substation originated

Tray for automatic dial telephones

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system

Tree hierarchy and description for generated logs

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

Triggered playback of recorded messages to incoming...

Reissue Patent

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

Triggered playback of recorded messages to incoming...

Telephonic communications – Special services – Service trigger

Triggerless number portability system and method

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

Trim phone circuit device having a calling line identification

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system

Troubleshooting interface for client-routed toll-free...

Telephonic communications – Terminal – Housing or housing component

Trough for cables and wires

Telephonic communications – Supervisory or control line signaling – Signal reception at substation

True alert indication

Telephonic communications – Supervisory or control line signaling – Substation originated

True DTMF dialer

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

True family telecommunication service

Telephonic communications – Plural exchange network or interconnection

Trunk apparatus for loop dialing trunk line

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Including fault responsive disconnection of tested component

Trunk cable fault detection and reconfiguration arrangement in a

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

Trunk circuit with loop length gain equalization