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.
A PRI ( Primary Rate Interface ) is a telecommunication line, generally terminated in an EPABX to handle communications from inside and outside the system. It gives 30 channels so that 30 simultaneous calls can take place on a single PRI line. Also, the service provider can provide 30 different numbers on a single PRI line so that every channel can have its own number.
Benefits of PRI