Generally, these greetings should be brief for an individual. State your name and a query for the caller's information. You can also include a backup number for people to reach you if you like. For an organization, it's a good idea to announce your standard office hours. Dial *98 on your OnSIP-registered phone. Enter your voicemail box number. Enter the PIN/password for your voicemail box. Press 0 for voicemail box options. Press 1 for unavailable greeting.
Consider for a moment how your phone is currently being answered. Professional courtesy is quite often not the standard for many college students. An abrupt "Yeah!" could be listed among the more courteous greetings. The more outrageous remarks will often buy you a major black mark in the professionalism category—even if it was your roommate answering your phone and acting crazy. A simple "This is ____" is always a pleasant change for a college student call. Make the change today, before the next (or first) employer phone call. If you have a landline, you should also encourage your roommate to do the same.

If you’re a small business owner, we recommend going with the RIY (record it yourself) route. First, it’s more affordable. Second (and more importantly), if your clients expect to work with you directly, they will expect to hear your voice when they place a phone call.
The main objective of a caller navigating an IVR system is to get to the desired destination as quickly as possible. If the script contains overly wordy phrases and long descriptions, the callers will get frustrated with every passing word.