7. A method of providing a conference call service, said method comprising steps of providing a phoneme dictionary storing text of words corresponding to combinations of spoken phonemes during a conference call, initiating a conference call, interrupting said conference call when a word of said speech string is not recognized, accessing text corresponding to a combination of phonemes in a spoken word of said speech string, synthesizing a pronunciation of said word of said speech string to provide a synthesized pronunciation, and substituting said synthesized pronunciation for said spoken word in said speech string.
7. A method of providing a conference call service, said method comprising steps of providing a phoneme dictionary storing text of words corresponding to combinations of spoken phonemes during a conference call, initiating a conference call, interrupting said conference call when a word of said speech string is not recognized, accessing text corresponding to a combination of phonemes in a spoken word of said speech string, synthesizing a pronunciation of said word of said speech string to provide a synthesized pronunciation, and substituting said synthesized pronunciation for said spoken word in said speech string. 8. The method as recited in claim 7 , including the further step of providing said text corresponding to a spoken word to participants in said conference call.