227826 ⎘
Telephonic communication systems specially adapted for combination with other electrical systems; Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors Data transmission during pauses in telephone conversation
Method of transmitting speech and digital data via an analog speech channel
#2Method and apparatus for exchanging information in a voice communication system
#3IMAGE FORMING APPARATUS AND TELEPHONE OPERATION SWITCHING METHOD THEREOF
#4Voice and video over a shared telephone line
#5Low bit rate video transmission over GSM network
#6Digital wireless voice and data modem
#7Communication method, transmitting method and apparatus, and receiving method and apparatus
#8Apparatus and method for transmitting and receiving data in a mobile communication terminal
#9Suppressing high speed modulation negotiation
#10Concomitant inband signaling for data communications over digital wireless telecommunications network
#11Method of advertising using a telephone system
#12System and method for preventing telephone line blocking by a modem
#13Method of scheduling data and signaling packets for push-to-talk over cellular networks
#14Telephone to telephone data passing system
#15Apparatus and method for CNG detection with call waiting
#16Data and voice transmission within the same mobile phone call
#17Sound communication system and mobile station
#18Hands-free modem-on-hold
#19System and method for preventing telephone line blocking by a modem