Which of the following statements are true of ISDN? (Choose the two best answers.) A. BRI ISDN u

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Step 1: Understand the basics of ISDN. ISDN stands for Integrated Services Digital Network and i

Which of the following statements are true of ISDN? (Choose the two best answers.) A. BRI ISDN uses two $B+1 D$ channels. B. BRI ISDN uses $23 \mathrm{~B}+1$ D channels. C. PRI ISDN uses two $B+1 D$ channels. D. PRI ISDN uses $23 \mathrm{~B}+1$ D channels.