Learn · What is a PBX?

What is a PBX?

A PBX is a business phone system. It connects the phones inside a company to each other and to the outside phone network. PBX stands for private branch exchange.

What a PBX does

  • Gives each person an extension. Staff can call each other with a short number.
  • Shares outside lines. A whole office can use a few lines, since not everyone is on the phone at once.
  • Handles calls. Transfers, voicemail, hold music and a menu that greets callers. What is an IVR?

Old PBX and cloud PBX

An old PBX is a box in a back room, wired to copper phone lines.

A cloud PBX does the same job over the internet, with nothing to install. It connects to the phone network through a SIP trunk. What is a SIP trunk?

Where Kurrent fits

Kurrent sits in front of your phone system. It checks each caller and sends the call where you want it: a phone, an AI agent, or a SIP trunk to your PBX or call center.

Kurrent is 50% off the call tracking bill you pay today, with a minimum of $1,795 a month.

Price my call-tracking bill See Kurrent

Questions

What does PBX stand for?
Private branch exchange: a business phone system that connects a company’s phones to each other and to the outside phone network.
What is a cloud PBX?
A business phone system that runs over the internet, with nothing to install in your office.
Is a PBX the same as a SIP trunk?
No. The PBX is the phone system. The SIP trunk is the line that connects it to the phone network.
Does Kurrent replace a PBX?
No. Kurrent sits in front of it: it checks each caller and sends the call to a phone, an AI agent, or a SIP trunk to your PBX or call center.
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