In an ISDN connection, what amount of throughput did a single B channel provide?

a.

96 Kbps

b.

64 Kbps

c.

32 Kbps

d.

48 Kbps

64 Kbps

Explanation:

ISDN stands for Integrated Services Digital Network. It makes use of two types of channels:

B type : which is used for carrying data/voice

D type : which carries control and signalling information.

ISDN supports two different service levels:

Basic Rate Interface (BRI) - home and small users Primary Rate Interface (PRI) - larger enterprise scenarios

Both BRI and PRI make use of set of B and D type channels for data transfer.

Each B channel or Bearer channel has a throughput of 64 Kbps whereas D channel has a throughput of 16 Kbps.