The principles of the present invention introduce non-realtime messaging systems (and controllers for use therewith) that are capable of converting received oral messages from callers into at least substantially equivalent text messages for transmission to subscribers thereof. This may be accomplished...http://www.google.es/patents/US6198808?utm_source=gb-gplus-sharePatente US6198808 - Controller for use with communications systems for converting a voice message to a text message
Controller for use with communications systems for converting a voice ...