Cisco 7000 Hardware Installation And Maintenance page 138

Connecting Interface Cables
Figure 3-12
From secondary ring
To secondary ring
From primary ring
Figure 3-13
From secondary ring
To secondary ring
From primary ring
3-134 Cisco 700 Hardware Installation and Mainteneance
Dual Attachment Station (DAS), Single-Mode Fiber Network Connections
Optical
bypass port
To primary ring
Dual Attachment Station (DAS), Multimode Fiber Network Connection
Optical
To primary ring
bypass port