13. A system for evaluating grammars of a voice portal executing on a portal server, the system comprising: an analysis interface to extract a current grammar from a set of active grammars of the voice portal, the current grammar representing a valid input for a first menu of the voice portal and being one grammar of the set of active grammars, the set of active grammars including at least one grammar from a second menu of the voice portal; a test pattern generator to generate a test input for the current grammar, the test input including a test pattern; a text-to-speech engine on a computer to enter the test input into the voice portal; a results collector to analyze the test input entered into the voice portal against the set of active grammars; and a results analyzer to derive a set of statistics indicative of how distinguishable the current grammar is from other grammars of the set of active grammars, the set of statistics being indicative of how distinguishable the current grammar is from the at least one grammar from the second menu of the voice portal, and to determine, based at least in part on the at least one measure, whether to modify the current grammar from the first menu to be distinguishable from the at least one grammar from the second menu.
13. A system for evaluating grammars of a voice portal executing on a portal server, the system comprising: an analysis interface to extract a current grammar from a set of active grammars of the voice portal, the current grammar representing a valid input for a first menu of the voice portal and being one grammar of the set of active grammars, the set of active grammars including at least one grammar from a second menu of the voice portal; a test pattern generator to generate a test input for the current grammar, the test input including a test pattern; a text-to-speech engine on a computer to enter the test input into the voice portal; a results collector to analyze the test input entered into the voice portal against the set of active grammars; and a results analyzer to derive a set of statistics indicative of how distinguishable the current grammar is from other grammars of the set of active grammars, the set of statistics being indicative of how distinguishable the current grammar is from the at least one grammar from the second menu of the voice portal, and to determine, based at least in part on the at least one measure, whether to modify the current grammar from the first menu to be distinguishable from the at least one grammar from the second menu. 16. The system of claim 13 , wherein the test pattern generator is configured to modify the test pattern to emulate the influence of one or more communications network qualities prior to entering the test input into the voice portal.