When users encounter issues with poor recognition of voice commands, the problem may stem from many sources—
The wrong command being used
Issues with pronunciation or foreign accent recognition
A poor phone connection
Jitter in the network, and so on.
Use the following troubleshooting steps to narrow down the source of the problem and to correct it:
1.Determine the nature of the problem.
a. If the user is having a problem with a single command, please check "Voice Commands" for a table of preferred voice commands. Although the voice-recognition grammar files contain many synonyms for the preferred commands, it is not possible for them to contain every word or phrase a user might say. For the best performance, encourage users to use the preferred commands.