What is a PRI circuit?
Information About Technology
Core Definition
A PRI Circuit is a dedicated telecommunications line that delivers voice and data services to businesses. It utilizes the ISDN (Integrated Services Digital Network) standard and provides 23 voice/data channels alongside a separate signaling channel. This circuit connects a company’s phone system (PBX) directly to the Public Switched Telephone Network (PSTN).
Benefit Definition
A PRI Circuit offers businesses several advantages, including reliable call quality, cost-effectiveness for high call volumes, and advanced features. It provides dedicated channels for voice and data, ensuring clear communication and minimizing downtime. PRI circuits, coupled with a PBX system, can unlock features like Caller ID and Direct Inward Dialing (DID), streamlining customer interactions and allowing employees to have individual phone numbers.
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Technical Definition
A PRI Circuit operates on either a T1 (North America, Japan) or E1 (Europe, Australia) line. These lines carry 23 bearer channels (B channels) for voice or data transmissions and one signaling channel (D channel). The D channel manages call setup, teardown, and features like Caller ID. PRI circuits employ circuit-switching technology, establishing a dedicated connection for the duration of each call.
