Note: If Greeting that lets callers know you'll be away for an extended period of time is selected, the call answering rules previously recorded are ignored and only the greeting recorded for this option is played.
Jan 21, 2008 · Where "(your phone number)" is your 11-digit phone number (including 1 and the area code), and "15" is the number of seconds (from 5 to 30 in 5 second increments) that you want your phone to ring before going to voicemail. (The default seems to be 10 seconds.) You can thank me later. 😉 (Hat tip to Bradley!)

Hello, you have reached the dental office of Dr. X. We are busy assisting a patient now, but will call you back as soon as possible. Please leave your name, reason for calling, and your number. If this is an urgent enquiry, please call 911. In this case, the dentist is giving a reason for not being available and they’re providing a way to prioritize the patients who need the most help. They’re also leaving an emergency number for the most severe of situations.
Once you’ve done that, head to the settings menu (the gear icon) on the Google Voice homepage and select Settings. Then, click the Calls tab. In the section “Call Options,” check off “Enable recording (4), Switch (*) and Conference options on inbound calls.” With this setting selected, whenever you make a Google Voice call on your phone, you can tap the number 4 on its dial pad to start recording.