Trends in Optical Networks
1990s: High Capacity Backbones
Debottlenecking the First Mile
What is Next-Generation SDH/SONET?
Ethernet Support in Next-Generation SDH
PowerPoint Presentation
Limitations of the traditional WAN Solution
Ethernet-over SDH/SONET
Case 1: Integrated IP/TDM Network: A Typical Requirement
Traditional Solution: Building an overlay network with SDH and IP elements
Integrated TDM/IP Service Network: Built using next-generation SDH
Case 2: ISP Backbone over SONET/SDH
Solution for the PoPs
Solution for the Gateway site
Case 3: Ethernet Leased Line Services over Existing Infrastructure
Transport for Mobile Voice/Data Networks
Functions needed for mapping Ethernet to SONET/SDH
Relevant Standards
EoS Mapping: without virtual concatenation
EoS Mapping: with virtual concatenation
Slide 21
Dynamic Bandwidth Allocation Link Capacity Adjustment Scheme (LCAS)
Cost-Reducing EoS: Partial Protection
Ethernet over SDH (EoS): Summary
Global Trends
Integrated Wide-Band Cross-Connects
Cross-Connects in Transmission Networks
Case 4: Ring Inter-connection with a Patch Panel
Ring Inter-connection: Cross-Connect
Slide 30
Intelligence in Next-Generation SDH/SONET
What is the “Intelligence” in “Intelligent Optical Networks?”
Intelligence in Next-Generation SDH
GMPLS Protocols for “Intelligence”
Network Planning & Point-and-Click Provisioning
Restoration with Pre-emption
Application of GMPLS: Restoration
Advantages of Intelligent SDH/SONET Networks
Summary of Trends
Billing Trends
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