AT&T DEFINITY 2500 series Network Manual page 3

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A AB BO OU UT T T TH HI IS S D DO OC CU UM ME EN NT T
PREREQUISITE SKILLS AND KNOWLEDGE
DOCUMENT ORGANIZATION
HOW TO MAKE COMMENTS ABOUT THIS DOCUMENT
1 1. . I IN NT TR RO OD DU UC CT TI IO ON N T TO O C CO ON NN NE EC CT TI IV VI IT TY Y
TRANSMISSION TYPES
ANALOG TRANSMISSION
DIGITAL TRANSMISSION
ANALOG VS. DIGITAL
TRANSMISSION STATES
VOICE TRANSMISSION
Entering the Switch
Exiting the Switch
DATA TRANSMISSION
Protocol Layers
Protocols Used
Protocol States
Connectivity Rules
MULTIPLEXED COMMUNICATION
TYPES OF MULTIPLEXING
Frequency-Division Multiplexing
Time-Division Multiplexing
Statistical Multiplexing
MULTIPLEXING OVER DS1 FACILITIES
Line Coding
Signal Inversion
Framing
Signaling
CONTENTS
x xv vi ii i
xvii
xvii
xix
1 1- -1 1
1-3
1-3
1-3
1-5
1-7
1-7
1-7
1-9
1-11
1-11
1-13
1-14
1-15
1-17
1-17
1-17
1-17
1-18
1-18
1-19
1-21
1-24
1-25
iii