NEXUSOptical Transport Exchanges™LayerOne derives its name from the first layer of the Open Systems Interconnection model that defines connectivity standards.

CONFIDENTIAL

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LayerOne Business Model - Overview

Physical Transport ExchangeOptical (Single Mode, Multi Mode)Electrical (DS1, DS3, Ethernet)

Optical Transport ExchangeTributary Exchange OC192-STS1

Peering/TransitLong Haul to Long HaulMetro to Long HaulPooling (City Pair, QoS, Segmentation)

Core Replacement / Insertion

Flexible Concatenation / GigE

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LayerOne Exchange Model

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LayerOne Exchange Model

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LayerOne Exchange Model

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LayerOne Exchange Model

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LayerOne Exchange Model

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LayerOne Exchange Model

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Growing List of LayerOne Customers

Enron BroadbandVerizonFPL FibernetGiant TechnologiesGenuity (GTE Global Networks)MaxcessMFS (Worldcom)XO (Nextlink)Progress TelecomQwestSonovaSphera OpticalStonehenge TelecomWired BusinessYipes!

Cable & WirelessGlobal CrossingMFNTekomMcLeodSoftswitchLevel (3)WilliamsTelseonCideraYahoo!TXUEl Paso Global NetworksEpikEdgix

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LayerOne Strategy for Success

Locate Exchanges within Highly-Connected VenuesCore of Long-Haul NetworksHead-End of Metro SONET Networks

Control / Offer Multiple Points of Access to the Exchange Fiber VaultsVertical & Horizontal ConduitsElectro/Optical Distribution Frame

Provide Telco-Grade SpaceMinimum Space Requirement - 2,000 Square FeetConditioned AC and DC Power

Create Software-Based Inventory and Provisioning PlatformOpen API Interfaces for Carriers and Bandwidth TradersWeb-enabled Java Interfaces