For phone greetings to be successful, they need to be: Crisp. A crisp, clear voice goes a long way. The message needs to be clearer than glass. No shuffling papers or dogs barking in the background. **Professional. **Your phone greeting needs to sound like you're a real company, not a random person answering their cell phone. Thought-out.
Once you have your message, you need to actually record it. The exact process varies depending on whether you’re using a cell phone or office phone, but here’s the basic process: Press the voicemail button, or press and hold 1 on most cell phones. Enter your password. Record your message. Listen to the message you just recorded. Follow the prompts to save your message. Following Up on Voicemail Messages

Use these step-by-step instructions to set up your voicemail. And don't worry if you make a mistake — you'll always have the option of backing up and changing your response.
Lastly, the configuration is complex (especially if you have never dealt with these systems before) and the documentation is sparse. This package came from Telco Depot, however, and despite my having worked with similar system before, I did have 2 small problems which I called the tech support number about. The technicians were extremely helpful!! My issue only took about 20 seconds to solve and on my second call, the tech connected remotely to my computer and walked me through the configuration step I was getting wrong.