15. “Hello, you’ve reached the Sales Department at [Company name]. All of our representatives are currently helping clients [insert goal such as, ‘achieve 40% growth through streamlining HR’] and are unable to take your call. Instead of putting you on hold and taking up your valuable time, please leave your name, company, and phone number and we’ll give you a call back ASAP. Thank you!”
Because they're working across such a broad array of features and channels, many of today's phone systems are adopting the moniker of Unified Communications-as-a-Service (UCaaS). These are generally cloud-based, virtual PBXes (private branch exchanges) that include at least one (usually multiple) software clients to enhance their functionality on the web, desktop, and especially mobile devices. Even residential VoIP systems come with features that are simply impossible with a conventional telephone system.

For larger systems, and for systems where security is critical for things like being compliant to vertical regulatory needs, your current internet connection might not be adequate. The internet doesn't do quality of service (QoS), and bandwidth can be unpredictable. Network congestion can ruin a conference call, and activities such as DNS hijacking can put your business and data at risk.
If you want to communicate a sense of professionalism to your potential clients, you’ll need a business number. No arguing there. But what good is having a business phone number if the connection is bad? We always take call quality into consideration when doing our virtual phone system reviews.