Speaking slowly also gives the listener on the line the opportunity to write down your message. Remember that people write slower than they talk. If you don’t speak clearly and slowly enough, your target listeners won’t be able to catch up, or they may even write the wrong information, making your message ineffective.
This process is often easy and quick. It allows organizations to upgrade their existing phone networks or begin new networks without extraneous effort. It’s usually affordable and complete with many features, including an attached business voicemail service.

Instead of leading with tired old lines like 'Your call is important to us', brush up on your telephone etiquette and start your voicemail with a thank you.
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.