Using voice to accept queue calls (or other calls) instead of pressing "1"

It is convenient to have some calls announced when answering them (e.g. queue calls, etc.), but then having to press "1" to answer can be inconvenient (such as when driving, when on a headset with no keypad, etc.). It would be nice to be able to speak "yes" or something similar to be able to confirm the call should be answered in addition to being able to press "1" to answer it.