Exam Preparation Tasks: Review All the Key Topics

Review the most important topics in the chapter, noted with the key topics icon in the outer margin of the page. Table 1-4 lists and describes these key topics and identifies the page numbers on which each is found.

Table 1-4. Key Topics for Chapter 1

Key Topic Element	Description	Page Number
Figure 1-3	Illustrates the wired connections to an analog phone	7
List	Two methods used to deliver signaling with digital circuits	11
Figure 1-7	Illustrates TDM	12
Tip	Specific signaling time slot for T1 and E1 circuits using CCS	12
List	Components of the PSTN	13
Table 1-2	Common audio codecs, bandwidth consumption, and MOS rating	21
Note	PVDM ratings	21
Text	RTP concepts and port ranges	24