Science · Telecommunication and Standards
Match the ISDN Standards (List I) with the respective correct Interface/Description in (List II): List I (ISDN Standards) A. Basic Rate Interface (BRI) B. Primary Rate Interface (PRI) C. B-ISDN D. Symmetric DSL Interface (SDSL) and ADSL List II (Interfaces/Descriptions) I. They are not part of ISDN interfaces. II. An extension of ISDN offering Asynchronous Transfer Mode (ATM). III. A high-capacity ISDN interface providing 23 B channels plus one 64 kbps D channel for a total of 1536 kbps. IV. A standard ISDN interface providing two 64 kbps channels for voice and data transmission. Choose the correct answer from the options given below:
- 1A-II, B-III, C-I, D-IV
- 2A-III, B-I, C-IV, D-II
- 3A-IV, B-II, C-III, D-I
- 4A-IV, B-III, C-II, D-I✓
Correct answer
A-IV, B-III, C-II, D-I
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