LandOfFree - US Patents - Listing for Telephonic communications

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

Trunk dialing converter

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

Trunk identification system

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

Trunk interface circuit having function of battery feed to centr

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Trunk interface circuitry for telephone systems

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

Trunk line exchange system

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Trunk utilization in a telecommunications network

Telephonic communications – Audio message storage – retrieval – or synthesis

Trunked communication system with nationwide roaming capability

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

Trunked talk-group assignment method

Telephonic communications – Including aid for handicapped user

TTY communication over packet networks

Telephonic communications – Including aid for handicapped user

TTY enhancement of busy condition prompt

Telephonic communications – Including aid for handicapped user

TTY enhancement of busy condition prompt

Telephonic communications – Including aid for handicapped user

TTY messaging

Telephonic communications – Including aid for handicapped user

TTY telephone display and related processes systems and apparatu

Telephonic communications – Terminal accessory or auxiliary equipment – Support or stand

Tube mounted telephone handset in an armrest

Telephonic communications – Terminal – Housing or housing component

Tubular bi-directional microphone with flared entries

Telephonic communications – Audio message storage – retrieval – or synthesis – Call source identification

Tune master caller identification device

Telephonic communications – Audio message storage – retrieval – or synthesis – Call source identification

Tune master caller identification device

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

Tune master internet protocol device

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

TV phone communication system and apparatus therefor