Sometimes, you need to step away from work and live a little! This is perfectly okay, but make sure you leave a well-recorded voicemail greeting to keep your customers happy and content. Read these two examples of professional vacation greetings.
Having experienced multiple "small business phone systems" (AT&T hard wired system - OK, AT&T SynJ wireless system - TERRIBLE, and a vTech system - almost as terrible) and for basically the same price plus a little bit of configuration time, the Grandstream products worked better, had more features and had much better sound quality than the others. I hope this helps. I bought this system for my office due to the affordable price. It initially had some problems with calls cutting out and poor call quality. I was going to return it, but the quality improved for a short while. The problems came back a week later and I had my phone guy look into the phones, wiring, and telecom installation. He said everything else was good but there was a problem with the phones. We hooked up a different system and viola! No more problems.

The basic rule of thumb is that callers should hear one of two things when they first connect with your voicemail — either an apology for not being able to answer the call or a “thank you” for having called. You can do both if you prefer, but keep it short and to the point.
People get frustrated when you don’t pick up the phone. They also get frustrated when the person who picks up the phone can’t help them, or if they have to wait a long time to talk to someone who can. A phone answering service like a virtual receptionist or call center can help reduce wait times and prevent missed calls, but if they can’t help a caller, your customers will feel like they’re just being passed from one person to another—and most people clearly don’t like that experience.