Community QuestionSeen on 5 CBTs
ISDN (Integrated Services Digital Network)
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Answer
A digital phone/fax/data service, often used to provide Internet connectivity. There are two classes of this service: Basic Rate Interface (BRI) provides two 64 Kbps (B channels) for data and one 16 Kbps (D channel) for link management control signals; Primary Rate Interface (PRI) provides either T1 or E1 capacity levels (23B or 30B) channels, depending on location in the world and one 64 Kbps D channel.
Alternate answers seen on other CBTs
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