Choose words and expressions that complement your business, brand and industry. As an example, a construction company would use words and expressions that convey high quality and solid workmanship; while a florist would use sensory descriptions that arouse smell and beauty.
Context does matter here. If the caller would reasonably expect you to answer the phone (such as if they were calling a store or other place of business), an apology for not being able to get to the phone makes the most sense.

This article is about the second main type of greeting – the voicemail greeting. All businesses should have professional voicemail greetings at the company level (i.e. your general business number), department level (e.g. customer service), and employee level, where applicable. It’s important that each of these voicemail greetings align with the brand and personality of your company to ensure that every caller has a consistent experience. Let’s dive in!
Internal Greeting: Turn on this greeting when you want to provide information coworkers might need to know. (For example, "I will be in conference room B until noon today.") When it is on, the internal greeting overrides the standard and closed greetings, and plays only to callers within your organization when you do not answer your phone.