A control system CS interfaces a multiplicity of individual terminals T1-Tn through a telephone network facility CO to accommodate game formats. At the terminals T1-Tn, callers are prompted by voice-generated instructions to provide digital data that is identified for positive association with a caller...http://www.google.com.au/patents/US6151387?utm_source=gb-gplus-sharePatent US6151387 - Telephonic-interface game control system
