3. The method of claim 1 , further comprising modifying the current grammar to create a modified grammar if the at least one measure indicates that the current grammar is not sufficiently distinguishable from the other grammars of the set of active grammars.
4. The method of claim 3 , further comprising: (i) generating a test input for the modified grammar, the test input including a test pattern for the modified grammar; (ii) providing the test input for the modified grammar to the voice portal on the portal server using the voice server; (iii) receiving at least one measure of how distinguishable the modified grammar is from other grammars of a set of active grammars that are active when the modified grammar is active, the modified grammar being one grammar of the set of active grammars that are active when the modified grammar is active; and (iv) modifying the modified grammar and repeating steps (i) through (iii) until the at least one measure of how distinguishable the modified grammar is from other grammars of the set of active grammars that are active when the modified grammar is active indicates that the modified grammar is sufficiently distinguishable from the other grammars of the set of active grammars that are active when the modified grammar is active.