Level 3 Overview

Level 3 Profile A premier provider of services over one of the world’s most advanced, IP-optimized networks Established: 1998 Headquarters: Broomfield, CO 2006 Annual Revenue: $3.4 Billion ($900 Million – Broadwing) Employees: 5,800 Four Groups Wholesale Markets Content Markets Business Markets European Markets Customers: MySpace, Yahoo!, YouTube, British Telecom, The Hershey Company, Internet2, Comcast Network: One of the largest global Internet backbones Services: Complete portfolio of voice, data, video and Internet services Broomfield Headquarters

Level 3 – The Right Network Why do Brand Name Customers buy from Level 3? Level 3 – The Right Network Designed to maximize coverage, performance, flexibility and scalability More Long-Haul and Metro Route Options than Other Providers > 77,000 intercity route miles available in North America and Europe > 21,000 metropolitan route miles High-Capacity, Nationwide Backbone Overbuilt backbone with new DWDM, IP and private-line switching layers in 2005 Long-haul capacity grew 50% this year and will double every two years IP backbone capacity tripled between 3Q05 and 1Q06 Expanding Voice Footprint Connectivity to every long distance tandem office in the U.S., as well as a large and growing number of end offices Ability to terminate calls anywhere in the world over the Level 3 Network

Level 3 – The Right Services Why do Brand Name Customers buy from Level 3? Level 3 – The Right Services Complete Portfolio of Data, Voice and VoIP services Only carrier with Tier 1 status and leadership across wholesale IP and wavelengths Uniquely positioned to support migration from TDM- to IP-based voice applications as well as traditional TDM app On-going Investments to Keep Pace with Rapidly Evolving Customer Requirements NexGen DWDM enables deployments in 100 Gbps increments VoIP infrastructure in place to accommodate rapid growth One of the Largest IP Backbones in the World World-class peering with over 470 Gbps of global peering capacity More than 5.1 petabytes of traffic per day Unique ability to invest in and serve enterprises’ telecommunications needs Premium, high-availability fiber builds enable us to connect companies to international network footprint, network services, and business applications Collaborative account service with local support for buying decisions — Level 3 is the only provider exclusively focused on the needs of business customers versus residential

We are THE Alternative to the ILECs. Our Value Proposition To Our Partners Why Level 3? Level 3 delivers a better partner program with a commitment to partner success. Focused field support $3B spent in past year on companies focused on the enterprise Sales promotions and sales contests designed to increase sales. The recent acquisitions provide a broader service portfolio and network reach. 6000 lit buildings and 120 markets across the U.S. Greater than 5,700 total traffic aggregation points. 77,000 intercity miles of IP transit Continuously upgradeable network optimized for IP technology We are THE Alternative to the ILECs.

Our Value Proposition To Our Partners’ End Users IT’S THE NETWORK QUALITY AND REACH Unparalleled IP network performance Level 3 outperforms its competitors 74% of the time for on-net latency Ranked top 3 among competitors for availability and low packet loss Customers reach global Internet destinations in an average of 1.77 hops, fewer than most any other provider Half of the traffic that originates on the Level 3 network, stays on the Level 3 network, allowing us to better control performance, therefore making Level 3’s SLAs more meaningful Only carrier with Tier 1 status and leadership position in wholesale IP, wavelength, dark fiber The broadest available portfolio of IP services (with added voice services) in the U.S and Europe Nearly 6000 lit buildings in 120 Markets.

Acquisitions are driving our Indirect Sales focus

Level 3 reaches IP traffic Milestone  At the close of February, we recorded, a total of one Tbps of global IP billable traffic on our Network. In 2000 Level 3 had less than 10 Giga Bits Per Second (Gbps) of billable IP traffic moving across our network. IP traffic has, on average, at least doubled each year since. One Tbps of IP traffic is equivalent to: 1,250,000 photos per second or 108,000,000,000 photos per day         31,250 songs per second or 2,700,000,000 songs per day   Tbps of billable IP traffic is a significant accomplishment for Level 3.     

Level 3: The Leader in IP Industry Recognition Customer Recognition “ Smithsonian Institution “The world’s first upgradeable international fiber optic network to be completely optimized for Internet Protocol technology, helping to stimulate the biggest change in telecommunications technology in 100 years.” Total Telecom Magazine World Communication Award Best Wholesale Carrier TMC Labs Innovation Award SuperQuest Network Infrastructure Award Yankee Group Wholesale Carrier Award “Buyers consider AT&T and Level 3 the best wholesale vendors.” Internet Telephony’s Product of the Year (for E-911) Customer Recognition eBay Vendor of the Year Microsoft Vendor of the Year for Quality “Level 3 Communications exhibited exemplary business integrity, openness and an emphasis on customer care.” “

Featured Services

Business Partner Program Services - Highlights Business Services Metro Ethernet and Intercity Ethernet Intercity & Metro Private Line Multi Connect High Speed IP Dedicated Internet Access (DIA) Ethernet VPN Converged VPLS IP VPN Primary Rate Interface (PRI) Enhanced Toll Free Collocation (Cabinets) SIP Trunking for Cisco Call Manager Express SMB VoIP Bundle (TBA) Wholesale Services (ICB only at this time) Intercity and Metro Wave Length 2.5 / 10 G Voice Termination International VT Toll Free 1 Plus Managed Modem Collocation (Suites)

Level 3 North America Metro Markets

Broadwing Network View

In head-to-head comparisons, the Level 3 advantage is clear! Best in Class On-Net Latency In head-to-head comparisons, the Level 3 advantage is clear! Level 3 outperforms competitors 73% of the time with 32% better performance Keynote measures network performance in selected locations for the service providers listed above. The locations that Keynote measures vary by provider, so Keynote data alone does not represent true “apples to apples” performance metrics. To create more of an “apples to apples” comparison, we have compared Level 3 performance on specific routes (measured by Level 3 monitoring equipment) to our competitors’ performance on the same routes (measured by Keynote). The routes compared include all those measured for competitors by Keynote for which Level 3 also measures performance and excludes from/to cities where Level 3 does not have IP gateways. A closer look at the exact comparisons in the tables in this chart can be found in the appendix. Some technical details underpinning this comparison: Keynote uses “TCP open” for measuring latency, while Level 3 uses “UDP.” While there is some discussion among engineers as to which method better reflects the end-user experience, this difference should be largely immaterial. Level 3 also measures latency more frequently than Keynote (many times per minute vs. once every 15 minutes). While both Keynote’s and Level 3’s methodologies are valid, we believe that the Level 3 methodology may be slightly more demanding. The purpose of calling out these differences here is simply to be explicit about the differences, not to discredit or criticize either methodology. Both Keynote and Level 3 latencies are round-trip measurements Level 3’s latency is 28% better than the companies we measured. While latency is an important component of end user experience, actual end user experience also depends upon other factors including IP port type (e.g. Gigabit Ethernet vs. Fast Ethernet), application and the amount of data being sent/received. Sources: Latency measurements for Level 3 competitors on specific routes obtained from Keynote Internet Health Report Pro. Level 3 latency measurements obtained using Level 3 Network monitoring equipment closely approximating Keynote’s. Metrics apply for the period 1/1/2005 through 3/30/2005. Performance improvement reflects latency only. Sources: Latency measurements for Level 3 competitors on specific routes obtained from Keynote Internet Health Report Pro. Level 3 latency measurements obtained using Level 3 Network monitoring equipment closely approximating Keynote’s. Metrics apply for the period 10/1/2005 through 12/27/2005. Performance improvement reflects latency only.

Outstanding Availability and Low Packet Loss Level 3 continues to achieve very high performance rankings, despite tremendous IP traffic volumes and growth The availability metrics for Level 3 and our competitors are measured by Keynote. Level 3 measures availability as a network wide average, so route-by-route comparisons were not possible for this metric. Please note that Keynote measures availability for each provider using a small number of markets, and that the markets used for testing vary by provider. Level 3’s internal network-wide average for availability was 99.998% for the period in question. Level 3 packet-loss statistics are measured by Level 3 monitoring equipment and pertain to all routes shared by Level 3 and any of the competitors. We have compared these statistics route-by-route against those of our competitors. For example, if Keynote’s average packet loss for MCI’s includes Chicago and Dallas, and the Savvis statistics include Chicago and New York, Level 3’s average statistics would include Chicago, Dallas and New York. “So why shouldn’t I buy from Savvis? Or from MCI? They seem to have done better than Level 3 in these areas.” The answer to this question is throughout this presentation, and specifically on slide 27. A great ISP isn’t one who performs in one or two areas, it’s one who performs in ALL areas where our customers need us to perform: scalability, performance, responsiveness, operations and maintaining a network and a company that will be here for the long term. Low packet loss, high availability and best–in-class latency delivers unparalleled network performance. Source: Level 3 packet loss data measured by Level 3 performance monitoring equipment and compared route-for-route with other service providers’ packet loss measured by Keynote. Availability data for all providers measured by Keynote. All measurements taken 11/1/2005 through 12/31/2005.

The Shortest Distance to the Whole Internet Level 3’s performance advantage is partly due to our network design. Our network is architected to reach any destination on the Internet with the fewest possible hops. Fewest hops Level 3 customers reach global Internet destinations in an average of 1.77 hops. Fixed Orbit, another Internet data analysis firm, uses the “Knodes” Index to measure a network’s connectivity to the Internet. The Knodes Index is based on more than 20 data sources, such as relative size, IP address control, routing tables and peering arrangements. The index is calculated to indicate the average number of networks, or hops, that must be traversed between any IP address on a given network to any other IP address on the Internet. Of over 20,000 networks that make up the Internet (and that are measured by Fixed Orbit), Level 3 comes out number one. This is another way to see how well connected Level 3 is to the rest of the Internet, and is an additional measure of end-user experience. Source: http://www.fixedorbit.com/metrics.htm The Internet user has a better, faster experience.

Featured Services Service Description Legacy BWNG Quote mechanism and turnaround Legacy LVLT Comments Metro Ethernet -Point to Point -Point to Multipoint Fast E: 10, 20, 30, 50, 100 MB Gig E: 100, 200, 300, 400, 500, 600, 1 GIG, 10G (ICB) N/A PSM/ PSS 3 Business days for on-net facilities. 10 + days for off net locations considering fiber builds. Both end-points need to be On-NET. Check On-Ramp list. Contact PSM for off net locations considering fiber builds. Intercity Ethernet Fast E: 50, 100 MB Gig E: 100, 200, 300,400,500, 600MB, above 600MB ICB. Check On-Net Ramp List. Metro / Intercity Private Line Speeds DS3, OC3, OC12, OC48, OC192 On-net both ends: 48 hours Hybrid: 5 business days One location on-net required for metro PL. Review On-Ramp List and Transport service availability List Multi Connect -Point to multipoint (Hub and Spoke) Private Line channelized DS3 to OC48 offerings. Static charge distance insensitive PSM 7- 10 Business days dependent upon complexity Product is ICB contact your PSM with opportunity’s.

Featured Services Service Description Legacy BWNG Quote mechanism and turnaround Legacy LVLT Comments High Speed IP Carrier Grade IP Transit Speeds DS1, DS3, OC3, OC12, OC48, Fast Ethernet, GIG E, 10 GIG E Newsfeeds, Multicast, Secondary DNS. N/A PSM/ PSS On-net services 48 hours Hybrid Services 5 business days Available on the Level 3 AS # 3356 Only. Minimal DS1 connectivity. Focus on on-net IP enabled locations (Collocated Customers) DIA Enterprise Dedicated Internet access. N x DS1 – OC48 access speeds . Primary and secondary DNS. Managed Router service with Ethernet handoff available Portal/ PSM On-net Services: 48 hours. Hybrid and Managed services: 5 business days Static pricing / No bursting. Not available in all area’s. Contact PSM/PSS for service availability. NxDS1and DS3 only on Broadwing. PRI ISDN PRI service Portal / PSM Hybrid/On-net: 48 hours Hybrid/On-Net: 48 hours 2-Way PRI Service only available in legacy ICG, Broadwing, and Telcove Footprints. Contact PSM/ PSS for availability. Flat rate and measured rate pricing based upon geography.

Featured Services Service Description Legacy BWNG Quote mechanism and turnaround Legacy LVLT Comments Ethernet VPN E-Line / E-LAN (Point to Point / Point to Multi Point) Private Layer 2 connectivity via Level 3 MPLS backbone. 1/10/50/100-600MB increments via Fast E or GIG E handoff. N/A PSM/ PSS/ SE 5-10 + business days dependant upon complexity. Please review On-Ramp List. Complex design and interaction with end user for quoting process. 600MB or greater consider Private Line Ethernet. Converged VPLS Layer 2 fully meshed topology. Any protocol (IP, SNA, etc..) Access: NxDS-1 – OC12 GIG E and Fast E increments. PSM/ SE Only available on the Broadwing AS# 6395 MPLS core network. IP-VPN Layer 3 private network via Level 3 MPLS core, fully Meshed configuration. IP Protocol. Supports T1, DS3, OC3, OC12, OC48, GIG E. 3 levels of COS. PSM /SE Enhanced Toll Free Call Center toll free application. Origination control Geographic routing Emergency redirect 10 + Days dependant upon complexity of request.

Appendix

Level 3 Ethernet Portfolio Metro Ethernet Intercity Ethernet E-LINE E-LAN Port-Based Service (Dedicated Bandwidth)  Metro Ethernet Private Line Metro Switched Ethernet Intercity Ethernet Private Line  VLAN-Based Service (Shared Bandwidth) Ethernet VPN

Metro Ethernet Overview E-Line A-Loc Z-Loc Point to Point Metro Ethernet over SONET Both locations on-net If location is off-net contact your PSM to explore feasibility for building fiber into the building.

Metro Ethernet Overview E-LAN A-Loc B-Loc D-Loc Level 3 POP B-Loc C-Loc Hub and Spoke Topology A, B ,C and D, locations all speak to Level 3 POP / Collocation All locations are on-net and Ethernet capable. If the location is off-net contact your PSM for feasibility of bringing fiber into the building.

Metro Ethernet Overview Supported configurations Point to Point (E-LINE) Multipoint (E-LAN) Speeds (Subject to availability) Fast Ethernet handoff – 10, 20, 30, 40, 50, 100Mbps Gigabit Ethernet handoff – 100, 200, 300, 400, 500, 600, 1,000Mbps 10G Metro Ethernet is dedicated and protected using Level 3 SONET rings Type I – entire circuit is on Level 3 network Installation Intervals Available locations/speeds 30 business days for locations with existing Ethernet equipment 45 business days for location without existing Ethernet equipment 90 – 120 Days when a fiber build and equipment installation is required.

Level 3 Ethernet Portfolio Intercity Ethernet Portfolio Level 3 Ethernet Portfolio Metro Ethernet Intercity Ethernet E-LINE E-LAN Port-Based Service (Dedicated Bandwidth)  Metro Ethernet Private Line Metro Switched Ethernet Intercity Ethernet Private Line  VLAN-Based Service (Shared Bandwidth) Ethernet VPN

Level 3 Long Haul Network Intercity Ethernet Private Line Overview A-Loc Z-Loc Level 3 POP Level 3 Long Haul Network Metro Ethernet Supported configurations Point to Point (E-LINE) Speeds Current Long Haul routes can support 50, 600, 1,000Mbps Intercity Ethernet can only be accessed using Metro Ethernet in Metro Ethernet available locations Intercity Ethernet Private Line is dedicated and protected using Level 3’s Long Haul Private Line network Pricing structure based on mileage

What is Level 3 High Speed IP? A dedicated wholesale Internet access service that rides on Level 3’s continuously-upgradeable IP, transport, and physical networks Trusted by the largest global users of wholesale Internet bandwidth A HSIP service that supports your needs for scalability and outstanding performance Tailored to meet the varied needs of high-bandwidth customers using a broad range of IP transit and network interconnection solutions

An Extraordinary Community of On-Net Customers Customers enjoy outstanding performance through direct on-net connectivity to the world’s leading content providers and “eyeball aggregators” More than half of traffic that originates on the Level 3 Network stays on the Level 3 Network Direct, on-net connectivity to the world’s largest ISPs and most popular Internet destinations Level 3’s Network is the Internet Why is staying on-net important? A non-Tier 1 ISP with a high, published SLA and an open-peering policy actually has a meaningless SLA; the SLA only covers the distance a packet actually travels on the provider’s network. Non-Tier 1 ISPs use their peering and transit infrastructure heavily. Your latency or packet loss from actual source to sink may be poor, but this ISP can still quote good results, since they only carry your traffic a fraction of its actual distance.

Size Matters The scale and geographic reach to handle your growth Connect to Level 3 at the highest interface speed available today (10 GigE) to reduce capital expenditure, simplify traffic management and capacity planning and reduce the number of times the network is touched

Flexible Billing Options CDR Flexible billing based on a minimum usage setting Additional usage above minimum charged at rate per Mbps Ideal for monthly variable usage needs ACDR Ideal for customers that require Internet access in multiple locations Fixed Rate Fixed usage billing based on port size, no variance per month Ideal for static monthly billing requirements

Dedicated Internet Access (DIA) DIA is enterprise focused DIA service differentiators: Primary & Secondary DNS service Managed Router service Fixed Rate billing plan for all speeds DIA service Interfaces Ethernet (ICB) FastE, GigE TDM/SONET DS-1, NxDS-1, DS-3, OC-3, OC-12, OC-48

Why Level 3 DIA DIA Value Proposition A network large enough to accommodate your current traffic A network with the ability to scale to accommodate your growth An IP service that performs with superior latency, availability, and packet loss An important community of the most popular on-net destinations A sound peering infrastructure with clean and balanced traffic among peers A company committed to your performance A company committed to its IP business model, that continues to invest in its network A company that is continually awarded for service quality A company that is recognized as a top IP provider by its customers

DIA Access Options Cross-Connects Metro Access Circuits Collocation facilities and Meet-me rooms Metro Access Circuits Metro Private Line DS1, NxDS1, DS3, OC3 – OC48 Managed Ethernet Access (ICB) Level 3 Managed Ethernet Access DS-1, NxDS-1, DS-3, NxDS-3, OC-3 and OC-12 (Type I or Type II) Enables access to multiple Level 3 Data/IP services (e.g.: Ethernet VPN, IP VPN, DIA) over a single local access connection End-to-end, turnkey solution with 24 x 7 monitoring and management Customer Premise Equipment (CPE) install, test, turn-up, repair, etc. Premise-to-premise SLAs, including CPE Type-II Access Type-II TDM/SONET Access