AT&T 7400 series, 7500 series, 7100 series, 2500 series, 7200 series, 7300 series List of Figures

xCONTENTS

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	LIST OF FIGURES
Figure 1-1.	Analog-to-Digital Conversion	1-4
Figure 1-2.	Transmission States for Voice Communication	1-8
Figure 1-3.	Transmission States for Data Transmission	1-12
Figure 1-4.	Time Slot	1-17
Figure 1-5.	Alternating Mark Inversion	1-19
Figure 1-6.	Example of B8ZS Line Coding	1-20
Figure 1-7.	D4 Framing	1-24
Figure 1-8.	The Extended Super Frame	1-26
Figure 1-9.	T1 Trunk Multiplexing	1-30
Figure 1-10.	Possible Multiplexed Connections	1-33
Figure 1-11.	Statistical Multiplexing	1-34
Figure 2-1.	Internal Dial Plan Interactions	2-9
Figure 2-2.	AAR Processing	2-12
Figure 2-3.	ARS Processing	2-15
Figure 4-1.	Standalone MS/T Network	4-1
Figure 4-2.	MS/T Coordinated Numbering	4-3
Figure 4-3.	Dialing Patterns From Tributary or Satellite to Main	4-5
Figure 4-4.	Dialing Patterns From Main to Satellite or Tributary	4-5
Figure 4-5.	Dialing Patterns From Main to Tandem	4-6
Figure 4-6.	Dialing Patterns From Satellite or Tributary to Tandem	4-6
Figure 5-1.	Typical 2-Level Hierarchical Electronic Tandem Network (ETN)
	Configuration	5-3
Figure 5-2.	An Example of Intermachine Tie Trunk Usage (Overflow Routing)	5-4
Figure 5-3.	Private Network Uniform Numbering Plan	5-7
Figure 5-4.	Extension Number Portability Cluster Using Common RNXs	5-8
Figure 5-5.	Feasible ETN/SDN Configuration	5-10
Figure 5-6.	Call Flow SDN - to - ETN	5-11
Figure 5-7.	Call Flow ETN - to - SDN	5-12
Figure 5-8.	Centralized Attendant Service	5-13
Figure 6-1.	Distributed Communications System (DCS) Cluster	6-1
Figure 6-2.	Internally Connected DCS Signaling Channel Over a DS1	6-4