What is the difference between ISDN BRI and PRI?
ISDN BRI provides the transmission of digital information between Allstream’s local central office equipment and comparable equipment at the customer’s location enabling simultaneous transfer of voice, data, video and fax communications at speeds up to 128Kbps (2 x 64Kbps). ISDN PRI provides two-way connectivity between a customer’s Private Branch Exchange and the Public Switched Telephone Network (PSTN) over a DS-1 interface enabling customers to carry both voice and data communications. With ISDN BRI, digital information is transmitted directly from the communication device through the BRI to the Allstream access node. However, ISDN PRI connects a customer’s PBX to the Allstream access node, not the communication device itself.
