A system and method in which multiple voice network access provider ("VNAP") systems cooperate to enable output of voice pages based on input of a voice code ("VCodes") assigned to the voice pages. Each multiple voice network access provider enables user to access content corresponding to the VCodes...http://www.google.com/patents/US6707889?utm_source=gb-gplus-sharePatent US6707889 - Multiple voice network access provider system and method
Multiple voice network access provider system and method
