Primary-Rate Interface (PRI) 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. PRI lines are widely used in Call Centers/Corporate Offices/Govt Organization/Hospitals where outgoing and incomings calls are high
A PRI line can receive/send 30 calls simultaneously its end to end digital circuit.
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