Issue 3 June 2001 xiii
Contents
Electrical Interfaces 10-2
Plug-In Maintenance Sparing Guidelines 10-47
SONET Overhead Bytes 10-52
Performance 10-52
Operations Interfaces 10-58
Physical Specifications 10-66
Environmental Specifications 10-67
Power Requirements 10-69
DDM-2000 OC-3 Reliability 10-72
A A SONET Overview A-1
â– Overview A-1
â– History A-1
â– Basic Purpose A-2
â– Technical Overview A-2
SONET Signal Hierarchy A-2
SONET Layers A-4
SONET Frame Structure A-6
Section Overhead A-6
Line Overhead A-7
Path Overhead A-8
SONET Multiplexing Procedure A-10
SONET Demultiplexing Procedure A-12
SONET Digital Multiplexing Schemes A-14
Virtual Tributary Signals A-15
Concatenated Mode A-16
â– SONET Interface A-18
SONET Payloads A-19
Higher Rate Transport A-20
â– Conclusion A-20