A system whereby automatic dial-type recognition is employed to reduce the wait time for callers and prevent false identification of touch tone versus dial tone service. A system according to the present invention includes a control unit (103) located in a PBX (104) or other switch which detects whether...http://www.google.co.uk/patents/US6185286?utm_source=gb-gplus-sharePatent US6185286 - Apparatus and method for improved dial-type recognition
