4. Voicemail greetings for calls received after business hours. You don’t want to answer calls 24/7 (unless you’re serving clients globally and there’s an expectation of 24/7 support).
VirtualPBX has recently presented its brand-new Flex plan, which further cements this company’s place on our best business phone service provider list. Flex is packed with features that make it ideal for remote teams – an invaluable option during this pandemic. When you pick this plan, you can choose one VoIP phone from its offer and add more devices for a small cost. Features include two local or toll-free numbers, unlimited local minutes and text messaging, video/audio conferencing, Zapier integration, call-log reports, and much more.

You can use this system to gain the trust of international customers by letting them contact you via local number. Another great feature of virtual phone numbers is the possibility of recording the conversations your staff has with customers or prospects. The list goes on and on.
The Session Initiation Protocol (SIP) is one of the underlying technologies that make VoIP possible. This is a text-based protocol similar to HTML. It's the most commonly used standard for setting up and controlling phone calls in most VoIP systems. You'll run across references to SIP in almost anything you do with these kinds of phone systems, especially when you're selecting any handset hardware you want to use.