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Standards >
Network Protocols >
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ALSO CALLED:
Bearer Channels,
B Channel,
Basic Rate Interfaces,
BRI,
Primary Rate Interfaces,
PRI
DEFINITION: In the Integrated Services Digital Network (ISDN), there are two levels of service: the Basic Rate Interface (BRI), intended for the home and small enterprise, and the Primary Rate Interface (PRI), for larger users. Both rates include a number of B-channels and a D-channel. Each B-channel carries data, voice, and other services. The D-channel carries control and signaling information. The Basic
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ISDN Protocols Reports
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3 Matches
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Over-the-Top Video: First to Scale Wins
sponsored by ComputerWeekly.com
ESSENTIAL GUIDE:
This report from Arthur D Little assess the impact of video services focusing on professional long-form content, such as Hulu, Lovefilm and Netflix.
Posted: 16 Oct 2012 | Published: 12 Oct 2012
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The Global Information Technology Report 2013
sponsored by ComputerWeekly.com
RESEARCH CONTENT:
This report from the World Economic Forum remains one of the most comprehensive and authoritative assessments of the impact of ICT on each country.
Posted: 15 Apr 2013 | Published: 22 Apr 2013
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The next wave of digitisation: setting your direction, building your capabilities
sponsored by ComputerWeekly.com
IT BRIEFING:
Companies need to make significant investments in digital skills and technologies if they are to meet the needs of their customers, Booz&Co argues in this report.
Posted: 27 Mar 2012 | Published: 05 Sep 2011
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ISDN PROTOCOLS DEFINITION (continued): … Rate Interface consists of two 64 Kbps B-channels and one 16 Kbps D-channel. Thus, a Basic Rate Interface user can have up to 128 Kbps service. The Primary Rate Interface consists of 23 B-channels and one 64 Kpbs D-channel using a T-1 line or 30 B-channels and 1 D-channel using an E1 line. Thus, a Primary Rate Interface user on a T-1 line can have up to 1.544 Mbps service or up to 2.048 Mbps service on an E1 line. PRI uses the Q.931 protocol over the D-channel. The Primary Rate Interface channels are carried on a T-carrier system line (in the U.S., Canada, and Japan) or an E-carrier line … ISDN Protocols definition sponsored by SearchNetworking.com, powered by WhatIs.com an online computer dictionary
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