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Brightspeed ISDN is an all-digital communications solution that enables the transmission of voice, data and video at higher speeds with better quality than standard analog technology. ISDN services enable a single transport type to transmit both data and voice for applications such as video conferencing, point of sale terminals and PBX trunk access to the Public Switched Telephone Network (PSTN).
The Integrated Services Digital Network (ISDN) digital architecture provides a high-speed, integrated transfer of voice, data and video over the same line, using the PSTN. Brightspeed's Basic Rate Interface (BRI) is compatible with the National ISDN standards (NI-2) and International Telecommunications Union (ITU) standards and protocols and includes circuit-switched voice, circuit-switched data and packet functionality. BRI provides for two simultaneous voice or data connections (bearer channels) and a low-speed data connection (data channel) using existing two-wire telephone lines, which provides a bandwidth of 144 kilobits per second (kbps).
The Brightspeed BRI network is available where facilities exist throughout Brightspeed service areas.
Brightspeed ISDN Primary Rate Interface (PRI) uses the same ISDN telecommunication standards but increases the available bandwidth for voice, video, and data services to 1.544 Megabits per second (MBPS). PRI uses a 4-wire transmission path to offer twenty-four channels of 64Kbps each of bandwidth. There are twenty-three Bearer channels available for payload traffic and one Data channel for signaling and supplementary services. Multiple PRI’s may be combined using a single D channel to increase available bandwidth.
ISDN PRI service is available where facilities exist throughout the Brightspeed service areas.