You work as a Network Administrator for McNeil Inc. The company has a TCP/IP-based network. The
company’s office has an ISDN connection. This connection is used to connect the network to the
Internet. How many channels does an ISDN BRI connection use to send data?
A.
2
B.
4
C.
6
D.
1
• Basic rate ISDN (BRI):
• 128 Kbps – two equal B channels at 64 Kbps each
• Generally, devices that connect to BRI lines can handle eight simultaneous connections to the
Internet.
• Primary rate ISDN (PRI):
• 1.536 Mbps – runs on a T-1 circuit
• 24 equal 64 Kbps B channels for data