While you need to adapt your writing style for screenwriting, you also need to realize there are additional production steps to recording an on hold message. You need to find someone who has the right voice for the job, and who can read your script well.
I haven't used this device for an extended period, but since there are no mechanical parts, I expect that it will last. We have been using a professional on hold service for many years at about $60/month. The box that the professional company gave us sounded great when customers would call from a Lan Line. But, when calling from cell phone the voice messages were lower volume and the music would sound horrible. Music keeps cutting in and out and sounds very staticky. So we decided to save some $ and cancel our subscription and buy this unit. We are using the default music and voice messages that came preloaded instead of doing our own music and messages.

On-hold music is considered standard in business phone systems today because people actually perceived wait times as shorter when they hear it. On-hold music traditionally worked by having specialized equipment attached to the phone, and the jack might plug into the radio, then tapes, then CDs, then MP3 players. PRI boards are built with jacks to play on-hold music.
On hold messages are a marketing tactic used by businesses and organizations to deliver information to their callers who are on hold. Although it was invented in the 1960s, this technology is still very useful today. If you are a business owner interested in utilizing this marketing tool, you may be interested to learn about the many features it has to offer. On hold messaging provides a variety of technology features that you can use to your advantage. Keep reading below to find out how they can work for your business.