Ensuring that your tone and message is nothing less than perfect, you’ve to rehearse it over and over again. Script it down, and let your crew sift through it. Perform several trials runs on your business voicemail greeting until you come up with an absolutely apt script. Remember to update it often so that you can include/remove some lines based on seasonal business changes.
i love that device – i build one as you described above and at the end i used a professional voicemail greeting from https://voxendo.com/en/voice-prompts-and-telephone-messages/ It looks like Twillio charges by the minute even though it appears that the voice file gets saved on the Pi. I’d like to use this to record phone calls by patching it in like adding a third party using the three-way function on my cell phone.

However, unlike a traditional PBX, the service is hosted in the cloud. By setting up fail over actions for Auto Attendants, and groups you can make sure that calls will be delivered. You also have the options to setup Find-Me/Follow-Me or Call Forwarding for each user extension.
Integrated voice response is an increasingly accessible option for businesses to automate common client interaction processes. Callers can interact with business systems via touch tone or voice entry. For a successful IVR deployment, having engine prompts that are professionally recorded and managed is essential. At Holdcom, we’ve helped thousands of businesses implement and enhance simple to complex call processing schemes with winning results. Make complex caller operations clear and simple Allow customers to access information and interact with business systems easily Reduce the amount of time that callers spend waiting for agents to gather information Reduce frustration and increase the speed at which caller issues are resolved