Still, COVID-19 won't last forever and hybrid work may not be right for your business, so keeping in mind core VoIP criteria is important. That means providing voice communications for employees at their desks once they start returning to the office. VoIP systems may also need to support a call center for sales or customer service and support; and they often need to connect with and through a host of other communications channels, such as conference calls, fax machines, mobile communications, text messaging, video conferencing, and wireless handsets.
One major pain point for any business is when customers aren’t going into a phone call or meeting prepared. If, for example, you’re a lawyer, you need your clients to come prepared with their documents ready. You also know that there are a ton of papers that need to be organized and filed — often with tight deadlines as well — and it’s imperative for the client to have it all readily accessible.

Don’t forget Packet8 business services. They have a virtual PBX, with real extensions, the ability to have the system forward calls to your mobile phone and actual equipment (if you want/need it). We’ve been using them for the past three years successfully with employees all over the U.S.
But VoIP requires a reliable broadband Internet connection. So for businesses that don't have access to broadband, an analog system may be the only option. If you're unclear on how the two systems differ, this Guide to VoIP compares them in easy-to-understand language.