PBX/SIP Trunking

SIP trunking is a VoIP service that connects your existing PBX to the internet.

It enables you to use your company’s on-premise hardware PBX. It’s already installed and managed on-site by your own IT staff. A SIP trunk is a direct virtual connection between the two infrastructures: your PBX equipment and VoIP.

SIP trunking replaces traditional landlines and offer huge versatility. They don’t just carry voice, but also video, emails, and other data, all on the same line. This eliminates the need for additional lines you’d otherwise need to access the internet or send faxes.

Unlike hosted PBX, where a third-party provider handles all required equipment and software on their premises, SIP trunking requires one of two things:

  • An IP-enabled PBX on-site, or
  • A VoIP gateway to connect your traditional PBX to the cloud

This will depend on your current business phone system.


Without SIP (Session Initiation Protocol) in place, your business communications will rely on separate structures of voice and data communication. This old system can’t handle large volumes of calls. You might be unreachable to your customers in crucial moments.

As a result, you might see a company’s continuity break down.

With SIP trunking, communication becomes reliable and speedy. This includes:

  • Immediate call routing and recording
  • Multimedia messaging
  • Video conferencing
  • Instant data exchange

In other words, if you already have PBX equipment in place, switching to SIP trunking is not only easy, but recommended. You’ll enjoy more features and a better telephone service compared to traditional phone lines.