Making calls over the Internet is nothing new. VoIP services like Skype and Vonage have been around for sometime and work well for residential use. Now small businesses can take advantage of the Internet voice revolution and build virtual, cloud-based office phone systems that have the functionality associated with traditional PBX systems: extensions, multiple line phones, voicemail in email, hold music, hunt groups and more.
SIP Trunking is a Voice over Internet Protocol or VoIP service that routes calls over a data network or the Internet and connects them to the Public Switched Telephone Network, or PSTN, making it possible to make an Internet call to any landline. SIP Trunking makes it possible for companies to dump their expensive traditional voice infrastructure and PSTN services and enjoy synergies that result in substantial cost savings. It's no wonder that in a recent study conducted by Infonetics Research, 75% of Fortune 100 companies are using SIP Trunking.