Since 1998, AT&T invested more than $35 billion to support customer needs in data, Internet protocol (IP), local and global services.

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2 AT&T Overview AT&T Corp. is the industry leader in data, voice, and video communications, serving more than 4 million businesses and 50 million consumer customers worldwide. Backed by the research and development capabilities of AT&T Labs, the company runs one the world s largest, most sophisticated communications network in existence. AT&T is a prominent supplier of outsourcing, consulting, networking integration, data and Internet services to businesses of all sizes. AT&T serves the communications needs of multinational companies and carriers worldwide. Since 1998, AT&T invested more than $35 billion to support customer needs in data, Internet protocol (IP), local and global services. The AT&T Global IP Network carries over 1.3 Petabytes of traffic each month; no US-based global carrier carries more traffic than we do AT&T currently has 289 regional SONET rings and more than 8,200 metro SONET rings deployed in the domestic network. Dedicated access in 800+ cities globally and remote access in cities (including US) World-class Local access in 92 US cities, over 6400 buildings on-net 99.99% overall reliability measured by rigorous DPM standards

3 AT&T participation at World Interoperability Demo Multi-carrier/multi-vendor/multi-site demonstration of: 1. Interoperability of dynamic optical control plane (UNI and E-NNI) 2. Ethernet/SONET adaptation using GFP AT&T is one of the anchor participants in this demonstration AT&T Certification and Testing Laboratory Middletown, NJ (MT) Equipment vendors at AT&T Labs: Avici, Ciena, Cisco, Lucent, Nortel Signaling Channel Connectivity to 4 other sites (DT, NTT, KDDI, VZ) and Supercomm booth Data Channel Connectivity to 2 other sites OC3 facility from Middletown, NJ (MT) to New York City (connectivity to Deutsche Telekom in Berlin) OC3 facility from MT to Cambridge, MA (connectivity to Verizon in MA)

4 Technology Demonstration by AT&T Labs Interoperability of Intelligent Optical Networks Interfaces: O-UNI 1.0 (Optical User Network Interface) E-NNI 1.0 (External Network to Network Interface) Interoperability 8 Vendors on 3 Continents Network Topology Discovery Provisioning and Support of Switched High Speed Circuits Ethernet/SONET adaptation using Generic Framing Procedure (GFP) Capabilities demonstrated Fast Ethernet (100 Mb/s) on a mix of SONET payload options Gigabit Ethernet (1Gb/s) on a mix of SONET payload options Interoperability 10 Vendors at 3 Carriers (AT&T, DT and VZ)

5 OIF World Interoperability Tests 2004 OIF interoperability tests and demonstrations: network topology Asia USA Europe TI DT NTT AT&T DT NTT KDDI China Telecom Verizon SuperComm 2004 booth TI KDDI Signaling Channel (E-NNI over IP VPN) Signaling Channel (back to Supercomm booth) Data & Signaling Channels

6 Intelligent Optical Network Interoperability AT&T Test Bed Configuration Video Streaming Avici TSR UNI-C 2 OC-3 UNI-N Ciena CI OC-48 E-NNI Trans-Atlantic STS-3C To DT Signaling To NTT Marconi XC Ciena XC Tellabs XC Cisco Router NEC XC Ciena XC Avici Router E-NNI Signaling To KDDI NEC XC Sycamore XC UNI-C UNI-N Video Streaming Avici TSR 2 OC-3 Nortel HDX STS-3C To VZ Tellabs XC Sycamore XC Avici Router

7 Avici TSR UNI Control Plane set-up Ciena CI E-NNI Avici TSR Nortel HDX E-NNI UNI E-NNI

8 Generic Framing Procedure AT&T Test Bed Configuration Ciena CI Trans-Atlantic (DT) Data link OC-3/STM-1 with STS-3C/VC4 Ethernet Test Set GE or 10/100 Cisco VC STS-x-yv OC-48 With STS-3C Testing with: ADVA, Alcatel, Marconi, Tellabs, Lucent, Ciena GE or 10/100 VC STS-x-yv Nortel HDX To Waltham MA (VZ) Data link OC-3 with STS-3C Testing with: Fujitsu, Lucent Tellabs, Turin Gig Ethernet Lucent DMX Fast Ethernet SONET

9 GFP set-up Cisco Ciena CI Lucent DMX

10 Network operations simplified by interoperability Reduces network management costs and intervention Networks auto discover paths, no need for OSS to maintain network topology Self-healing capabilities, perfect for disaster recovery Lower Capital Costs Vendor independence through standards based interoperability Provides capability for immediate use of bandwidth Provides flexibility within customer network topology leveraging Multi-Service platforms networks

11 Services enabled by interoperability Interoperability of Intelligent Optical Networks Point and Click provisioning across network (end-to-end) Optical VPNs Switched high speed bandwidth Bandwidth across carriers (national and global) IP layer dynamically adjusts optical layer provided connectivity Ethernet/SONET adaptation using Generic Framing Procedure (GFP) Vendor independence Support for Ethernet services without the need to match MSPs at the access points into the network Bandwidth optimization Map Ethernet to effective SONET payload (according to usage) Throttle SONET bandwidth allocation according to Ethernet usage

12 Optical Networking for the Enterprise (ONe) Adaptive Bandwidth service Key industries: Financial, Media & Entertainment Collaborative work on video/movies terabit size Management of real time video Media broadband distribution of intelligent content (real time) Management of backbone WAN Service Description Layer 1 Transport Networking Application Agnostic Adaptive Bandwidth (real time dynamic & reconfigurable bandwidth) HQ DS-3 Access ONe Port I O S Distribution ONe Port STS-1 OC-48 Access I O S STS-12 STS-3 I O S STS -1 Manufacturing I O S ONe Port OC-12 Access OC-3 Access ONe Port Regional Office Customer Benefits Flexibility: bandwidth where it s needed, reconfigured as needs change Control: configure your network for your business Speed: zero touch provisioning implemented in seconds

13 Can your network do this?

14 Follow the sun.

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17 Thanks to.. X X X X Systems for providing emulation equipment to test for differential path delay for providing networking equipment in support of the Control Plane communications for providing equipment, software and technical support for the video streaming and transmission for providing testing/simulation packages

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