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.
Website: https://www.att.com/ecms/dam/att/business/help/pdf/UG_ATT_Phone_for_Business_121217.pdf

When you’re looking for a job, a good rule of thumb is to answer your phone as often as you can. You never know when a recruiter might be calling to set up an in-person meeting, or conduct a phone interview.
The simple truth is that you need to be more aware of what you’re leaving for other people to hear. Sure, this doesn’t always register as a priority for users, but it’s never too late to reassess your greeting. a. Reading/Speaking in the Imperfect Tone: Tone is absolutely everything. Users don’t want to come off as being too nice, as it sounds insincere, or being too terse, as it can be interpreted as being rude. That being said, striking the right balance is absolutely essential. Your greeting exists as its own entity, and therefore, it should NOT rely on callers’ familiarity with you. Instead, it needs to appeal to the masses. As such, your inflection, i.e. the way you state your name and directions, needs to be both welcoming and firm. b. Injecting Humor & Insincerity: While humor/light heartedness can be welcoming, it can also convey a sense of informality, insincerity, and ultimately unprofessionalism. Why, because you’re not there to lend your humor or to contextualize. Instead, you’re assuming the caller has a working knowledge of your personality to ground the message. Though this might not sound like it’s all that terrible—it can be detrimental. As stated above, one should NEVER rely on a caller’s familiarity with you. Instead, aim to appeal to the masses. Humor is ultimately subjective, meaning not everyone has the same tastes; therefore, someone is bound to be turned off by a quirky or off-color remark. While implementing a light-hearted or even tongue and cheek tone can work, it’s just a really bad idea.