SIP Trunking: Public, Private, VPN, and Why
Posted
by 
Mark Lindsey
Mark Lindsey
When you're connecting to the rest of the world to make and receive phone calls, you have several design options available. Or, more precisely, your Voice Service Providers have many options available. VoIP via Layer-3 VPN In this case, a Layer-3 VPN, such as MPLS over the Voice Provider’s own equipment, is used to connect a Voice customer to the Voice service provider. Shared infrastructure i...