Along With Your Managed Firewall Service, A Session Border Controller Will Complete Your Security Package. A virtual SBC connects you, through our data center, to your SIP service provider with a private and protected link for your Voice Over IP calls. Without one, you’re leaving your business susceptible to security risks that will cost both time and money to fix. An SBC is a critical element to any Cloud PBX or dedicated telephony solution. If you’re considering using Office 365 for its calling capabilities, an SBC is a must. PingCo is able to offer you a fully-hosted service, while still being 100% self-managed. You’ll get the control and functionality of this service without having to invest in purchasing your own infrastructure.