When you create a professional voicemail greeting, it can be a good idea to think about what your callers might want to know. After doing so, you can make a list of points to cover in your voice message; it might also be a good idea to write out the entire greeting on a piece of paper. The ideal message should be somewhere between 10 and 20 seconds, so you may want to time yourself repeating your message before you record it. After composing your telephone message, it can be a good idea to get a second opinion of this greeting so you can make sure it sounds professional. Writing down a voicemail greeting helps prevent mistakes when recording it.
When you create a voicemail message, the next thing you need to ensure is that your prospects are aware that they have reached the right person so no confusion takes place.

If you like to keep things simple, opt for a basic greeting. Most voicemail options allow you to record just your name, which lets callers know they’ve reached the right person.
Enhanced Voicemail lets you listen to messages, create personal or corporate greetings and access your voicemail box from anywhere there's phone or internet access. In the Optimum Business Account Center, you can manage many advanced voicemail features, including listening to messages online, setting voicemail alerts and sending your messages to your email account. To activate your voicemail box you can simply dial *86 from your Optimum Voice line and follow the voice prompts or log in to the Optimum Business Account Center, click the "Phone" tab and select "Voicemail" from the drop-down menu. Here you will find the complete instruction guide to activate and manage your voicemail online or via telephone.