The voice over data component of a personal communications system enables the operator to simultaneously transmit voice and data communication to a remote site. This voice over data function directly encodes digitized voice samples onto the carrier using quadrature amplitude modulation to transmit...http://www.google.fr/patents/US5754589?utm_source=gb-gplus-shareBrevet US5754589 - Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system
Noncompressed voice and data communication over modem for a computer-based ...
