What is a PRI trunk?

It is an interface standard used on an ISDN (Integrated Services Digital Network) to deliver multiple lines of voice and data into a business's exiting PBX via one physical line, called a circuit. PRI is a high-capacity service carried on T1 trunk lines between telco central offices and your location.Sep 2, 2015 read more

A PRI (Primary Rate Interface) line is a form of ISDN (Integrated Services Digital Network) line which is a telecommunication standard that enables traditional phone lines to carry voice, data and video traffic, among others. read more

A trunk is a dedicated connection that links the PBX to a phone service provider, which in turn links to the public switched telephone network (PSTN). The service allows you to make and receive calls, plus it comes with disaster recovery features that ensure you never miss a call. read more