Yes, with SIP trunking, you can use your existing PBX phone system for more flexibility and higher call quality. SIP trunking brings VoIP functionality to a regular phone system. And this way, you can make and receive calls through the internet and modernize your phone system.
UNITED WORLD TELECOM BLOG
F A Q | VoIP Equipment
No, you do not need to buy a new modem or router for your VoIP service. You may need to upgrade your internet connection if the existing bandwidth is not compatible with your VoIP service.
Yes, you can connect your VoIP hard phone to your modem or router using an Ethernet cable. This way, you can make and receive calls over the internet instead of a landline.
You can get VoIP from a virtual phone service provider like United World Telecom. You can chat with our representatives or call us at 1 (877) 898 8646 to get started!