Simple Intelligent Bandwidth Management Ruben Markus President CEO

Simple Intelligent Bandwidth Management Ruben Markus, President & CEO Proprietary and confidential

Carrier Types in Competitive Markets • • • CLEC Data/IP competitive carrier Global carrier Carrier of carriers (provides capacity) Bandwidth trader (trades in capacity) Telecom hotel (provides Point of Presence) Proprietary and confidential

Competitive Carrier’s Characteristics • • • Optical infrastructure High bit rate services “Real time” service provisioning Multi-service converged offerings Innovative architectural approaches Proprietary and confidential

Data – The Revenue Growth Driver Proprietary and confidential

U. S. Data Service Market 35000 30000 25000 IP Business Access $M 20000 ATM Frame Relay 15000 10000 5000 0 1998 1999 Source: IDC reports 2000 2001 2002 2003 2004 Proprietary and confidential

The Service Pyramid 2003 Deployment (ports) STMn DS 3 20, 000 (x) 50, 000 (2. 5 x) E 1 Source: Vertical Systems 3/2000 1, 900, 000 (95 x) Low-Speed Services Provide the Financial Foundation Proprietary and confidential

Next Generation Network Architecture Long Haul DWDM T: : CORE Core Network 12345678910 11121341156 Super broadband Network T: : MSA 12345678910 1113 2141156 Service Network Proprietary and confidential

Multi-Service Convergence At the Edge of the Super Broadband Network FR Services N x DS 0, DS 1, N x DS 1 ATM Services ATM Switch OC-12 OC-3 ATM OC-3 Edge Router DS-3 Ethernet DS 1, N x DS 1 IP Services IP/FR, IP/PPP N x. DS 0, DS 1 Private Line, Voice Services DS 1 T: : MSA OC-48 ATM/FR Network IP Backbone SDH/SONET Backbone DS 0 – OC-12 Next Generation Networks - Fewer NEs, lower costs Proprietary and confidential

At the Core of Super Broadband Network: The New Transport Position IP Services ATM Services TDM Services Sub l Switch Optical Switch Edge Core The electronic convergence layer Proprietary and confidential

Multi Service by Native Trunks OC-48 STS-n Service Plane VP LSP Electronic Transport Plane T: : CORE T: : MSA Optical Transport Plane Proprietary and confidential

Summary: Our Perception • Data-centric services will continue to grow • Next-generation architectures should support multi-service offerings and complement the optical core • Convergence is the key to competitiveness Proprietary and confidential

Thank You Ruben Markus Tel: 03 -9261226 Email: markus@enavis. com Proprietary and confidential