Turn on the Voicemail Service toggle, and choose from any of the settings you want to enable. Send a User's Calls to Voicemail These voicemail settings can be configured for users to direct incoming calls to users' voicemail.
When Virtual Offices of NYC provides your company with the phone answering custom greeting service. The right greeting is heard when your line is answered: your company branding! A Virtual Office of NYC representative sets up the message with one of our professional greetings or we can set it up with the clients’ custom message.

You might also consider giving them the option to skip your voicemail message completely by pressing another key (again, check with IT). You also want to make callers aware what you will return their call, instead of telling them that you will try to return their call--and let them know when you are likely to do it, if possible. If necessary, provide additional or emergency information in your voicemail greetings. My dentist, for example, lists his cell phone number for emergencies.
If a customer hasn’t saved your number in their phone, they’re a whole lot less likely to listen to your message. They see there’s a voicemail, but if they don’t know who it’s from, they’re not going to listen to it. In eVoice’s 2013 survey, 82 percent of the respondents said they don’t listen to voicemails from unknown numbers.