Talk Designer does still exist in Poser 11.3.818, but V4, which is not native to Poser, does not have a viseme map. According to the manual, third-party figures should provide the map. However, there is a free Victoria 4.1 Talk Designer Kit in the free section: Victoria 4.1 Kit for Talk Designer. It should work with Victoria 4.2; It requires the Morph++ package for facial expressions.

Edit: I just checked if the kit is still available, and, unfortunately, the host site (ShareCG) is no longer in service.