I am a single provider and use the comcast voicemail service. We have the after-hour message telling pts that the clinic is closed and if they need to speak to the on-call provider they can press 0#. The call is sent to my cell phone. The clinic phone number is displayed, so I know that the clinic is calling - avoiding the need for 2 cell phones. When I miss the call, the message is left on my cell phone. This meets the requirements from the insurance company and saves money.