698 Chapter 9: Scenarios for Final Preparation
21
A reference point is an interface between function groups. R, S, T, and U are the reference
points. S and T are combined in many cases and together are called the S/T reference
point.
22
Q.920 performs functions similar to OSI Layer 2, and Q.930 performs functions similar
to OSI Layer 3.
23
Cisco routers' ISDN interfaces are either S/T or U interfaces.
24
The show cdp neighbor detail command gives these details.
ch09.fm Page 698 Monday, March 20, 2000 5:23 PM