Talker speech level control circuit for telephone...

Tandem testing of telephone lines

Tape monitoring and control for centrally located automatic...

Tape unit response check circuit

Target content distribution for telephone calls

Targeted and intelligent multimedia conference establishment...

Tariff management apparatus and methods for communications...

Tcp/ip/ppp modem

Tdd emulator for a personal computer having a sound card

Technique for administering personal telephone numbers

Technique for assisting a user with information and customer...

Technique for attributing communication call transactions to...

Technique for automatic identification of a remote modem

Technique for call context based advertising through an...

Technique for communicating concierge-type information to...

Technique for controlling fraudulent use of a...

Technique for determining the values of circuit elements in...

Technique for dynamically routing communication calls to...

Technique for effectively communicating travel directions

Technique for effectively controlling communication links to...