xxx Issue 1 December 1997
Figures
2-22 Locked (0x1) STS-3c - Broadband Services 2-35
2-23 Teleprotection and SCADA Application 2-37
2-24 Intelligent Vehicle Highway System (IVHS)
Application 2-39
3 Shelf Descriptions and Configurations
3-1 DDM-2000 OC-12 Shelf — Front View 3-3
3-2 DDM-2000 OC-12 Shelf — Rear View 3-3
3-3 DDM-2000 OC-12 Front Panel 3-6
3-4 OC-12 STS-1 Path Switched Ring Shelf 3-9
3-5 OC-12 STS-1/VT1.5 Path Switched Ring
Configuration 3-10
3-6 OC-3/IS-3 Dual Ring Interworking Configuration 3-11
3-7 OC-12 Ring Configuration (DS1/EC-1 Low-Speed
Interfaces) 3-12
3-8 OC-12 Optical Extension Shelf 3-13
3-9 Linear (1+1) Extension From OC-12 Ring
Configuration 3-14
3-10 DDM-2000 OC-12 Dual Homing Shelf 3-15
3-11 DDM-2000 OC-12 STS-3c Broadcast Shelf 3-16
3-12 DDM-2000 OC-12 OC-3c Transport Shelf 3-17
3-13 DDM-2000 Fan Shelf 3-18
3-14 DDM-2000 Fan Shelf — Fan Switches — Front
Cover Removed 3-19
4 Power
4-1 DDM-2000 OC-12 Multiplexer Power
Architecture 4-2
4-2 Circuit Pack Power and LED Control 4-4
4-3 Typical -48 Volt Power Supply for DDM-2000
OC-12 Single Shelf 4-5
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