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.
25.Thank you for calling [X company Company name]. Our representatives are currently unable to take your call as they are helping clients achieve [X goal]. We don’t want to take up your valuable time, so please leave us your name, phone number and message after the beep and one of our representatives will personally assist you within the next 24 hours. Have a wonderful day.

A Message On Hold program (MOH) plays to callers waiting on hold or in queue. It features recorded announcements (paragraphs) and music that plays in a continuous loop. All other project types, such as voice prompts for telephony, website audio, voice mail greetings and others, are considered “Voice Productions”. While these projects can feature music in addition to voices, they are delivered as separate files and do not play in a loop.
Using your cell phone to record a voicemail message isn't always easy. Between remembering what to say and getting the right timing, it's tricky. But your phone does have a playback option, and it's easy to listen to and review your message. For some people, though, cutting off the end of a message is a funny way to trick people and catch them off guard. In most situations, callers won't know it's intentional and will think you're far less than tech savvy. Definitely not an impression I'd want to make.