What Is PRI?


Quick Answer

PRI refers to Primary Rate Interface, which is a type of telecommunication service that is used in business offices. A PRI system carries data and voice transmissions over a network in order to allow users to communicate with one another.

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Full Answer

There are two main types of PRI systems: the T1 and the E1. The T1 system refers to the T-carrier line. This is used throughout the United States and Canada. There are 24 channels on a T1 system. The E1 system refers to the E-carrier line that is used throughout Europe. The E1 system has a total of 32 different channels.

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