Table of Contents
Issue 1 December 1997 3-i
3
Shelf Descriptions and
Configurations
Overview 3-1
DDM-2000 OC-12 Multiplexer Shelf 3-1
DDM-2000 OC-12 Multiplexer Shelf Configurations 3-7
■ OC-12 STS-1 Path Switched Ring Shelf 3-9
■ OC-12 STS-1/VT1.5 Path Switched Ring Configuration 3-10
■ OC-3/IS-3 Dual Ring Interworking (DRI) Configuration 3-11
■ OC-12 Ring Configuration (DS1/EC-1 Low-Speed Interfaces) 3-12
■ OC-12 Optical Extension Shelf 3-13
■ Linear (1+1) Extension From OC-12 Ring Configuration 3-14
■ OC-12 Dual Homing Shelf 3-15
■ OC-12 STS-3c Broadcast Shelf 3-16
■ OC-12 OC-3c Transport Shelf 3-17
DDM-2000 Fan Shelf 3-18