Issue 1
December 1997
xxxiii
Figures
8
Administration and Provisioning
8-1
OC-12 Ring Configuration Cross-Connections
DS3 to DS3 With STS-1 Cross-Connections
8-2
Drop and Continue Nodes
8-3
Example Dual Ring Configuration Cross-
Connections
8-4
Example Single Homed OC-3/OC-12 Ring (0x1)
Configuration Cross-Connections
8-5
Example Dual Homed OC-3/OC-12 Ring (0x1)
Cross-Connections
8-6
Example Dual Homed OC-3/OC-12 Ring (0x1)
Cross-Connections with Intermediate Node
9
Maintenance Description
9-1
Three-Tiered Operations
9-2
Single-Ended Operations
9-3
Example of Main Signal as a Result of
Unprotected Incoming OC-12 Failure
9-4
Maintenance Signaling — Path Switched Ring
Applications
9-5
Unidirectional Line Protection Switching
9-6
Two-Fiber Unidirectional Ring
9-7
Path Protection Switching
9-8
DRI Path Protection Switching
9-9
DS1/DS3 Line and Path and DS3 Path
Performance Monitoring
10
Technical Specifications
10-1
Optical System Interfaces (Points S and R)