Primary Rate Interface


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Primary Rate Interface

(PRI) A type of ISDN connection. In North America and Japan, this consists of 24 channels, usually divided into 23 B channels and 1 D channel, and runs over the same physical interface as T1. Elsewhere the PRI has 31 user channels, usually divided into 30 B channels and 1 D channel and is based on the E1 interface.

PRI is typically used for connections such as one between a PBX (private branch exchange, a telephone exchange operated by the customer of a telephone company) and a CO (central office, of the telephone company) or IXC (inter exchange carrier, a long distance telephone company).
References in periodicals archive ?
Tenders are invited for Isdn Exchange Primary Rate Interface Card Pri 30 Ipx Card Suitable And Compatible For Existing Coral Ipx 500 Exchanges Of Secunderabad Division.
Pricing for primary rate interface (PRI) lines, which can support up to 30 channels for simultaneous external calls, will be dependent on how many channels are used.
Primary Rate Interface or PRI, which is the standard service used by most
1, includes support for a mouse/keyboard/touch screendriven attendant application, active call and name/number primary rate interface (PRI) display, off-premise dialing, silent call monitoring, and automatic route selection.
Investigate with your phone utility the possibility of installing a primary rate interface (PRI) service.
According to the company, MetaSwitch has enabled Saddleback to quickly provision such services as primary rate interface (PRI) for large businesses, and integrated solutions for small to medium-sized businesses, including Hosted VoIP, unified messaging and conferencing services.
PRIMARY RATE INTERFACE (PRI) SIMULATION upgrade is available to expand test platform capabilities.
DIS current telephony circuit environment consists of Primary Rate Interface (PRI) and Plain Old Telephone Service (POTS) geographically provided by local carriers.
Verizon said it will provide services such as Centrex service, audio conferencing, local and long-distance usage, enhanced call routing, ISDN primary rate interface (PRI), ISDN basic rate interface (BRI) and frame relay under the terms of the new agreement, which extends an existing 25 year relationship between the two companies.
In addition, Axerra's Pseudo-Wire solutions enable PrimeTel to provide efficient, cost-effective backhaul of E1 Primary Rate Interface (PRI) services as well as Frame Relay and VPN traffic.
Tenders are invited for Replace the existing 2 T1 circuits with Multiple Label Switching (MPLS) on T1 circuits; Replace the existing six (6) MPLS Ethernet PIP circuits at 3 transit stores, and 2 bus yards; Convert existing primary rate interface ( PRI ) trunk circuits to session initiation protocol ( SIP ) trunk circuits; Provide network access to replace existing MPLS and T1 circuits; and Manage service for the MPLS, T1, and SIP circuits for a 3-year base period.
Under the terms of the agreement AT&T will integrate The American Legion's voice services with AT&T Business Network (ABN), AT&T ISDN Primary Rate Interface (PRI) and a Nortel Private Branch Exchange (PBX).