Connecting your home or mobile phone to Google Voice enables you to ring the phone using your Google Voice number, get voice mail and even send callers to your Google Voice mailbox from your phone. To set up your Google Voice account, you must verify ownership of a phone, and under certain circumstances you may run into problems if Google doesn’t recognize the proper Dual-Tone Multi-Frequency signal from your phone’s keypad. Writer Bio

My Google Voice Can t Verify a Number - 40