For more information about our IT Services visit http://www.earthlinkbusiness.com/. Scott Bridwell | 877.764.8656 | sbridwell@corp.earthlink.com

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EarthLink MPLS Network Solutions
for
Presented by Scott Bridwell
Channel Manager / Partner Channel
877 764 8656 | sbridwell@corp.earthlink.com
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2. A history of innovation and market leadership 2
Cloud & IT
Secure Managed
Services
Networks
VPN
Voice + Data over
IP
High Speed DSL
(Nationwide)
High Speed DSL
(Major cities)
2010
ISDN,
2006 DeltaCom
2011
Frame Relay, 2004 New Edge
acquisition
acquisition
One
Dial Up First major ISP Communications,
2000 to offer voice Logical Solutions,
Business Vitals,
MindSpring merger,
xDefenders
PeoplePC acquisition
Synergy acquisitions
1997
IPO (NASDAQ)
1994
EarthLink founded

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Company Summary
Strong Financial Position
EarthLink (NASDAQ: ELNK) has generated over $1 billion dollars in revenue over the
most recent twelve months and is well-positioned to strategically support the needs of
customers going forward.
Stats & Facts
• Customers: Over 1.6 million
• Revenue: Over $1 billion (most recent 12 months)
• Employees: Over 3,000
• EarthLink Business Infrastructure:
o Operates a nationwide IP network with underlying fiber assets in 30 of
the top 50 MSAs in the country
o 1,322 Central Offices nationwide
o Fiber Optic Network
− 27 states
− 71 Metro Rings
− 55 IP and circuit-based switches
− Over 28,000 Miles in Total Fiber Transport
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Comprehensive product portfolio
Portals / Tools
EarthLink
Data Center Virtualization Application Managed
Services Services Services Support
Secure Email
Colocation Cloud Hosting
Archiving/
Services
Dedicated Server Managed IT
Encryption
Disaster Recovery Remote Tech
Collaboration
Web Hosting Care (1H 2012)
Database
Managed Security Services
Network and Cloud, Endpoint and Device, Compliance and Monitoring, Business Continuity
Core IP Voice and Data Services
Voice: Hosted Voice, Integrated Access, SIP Trunks and PRI
Data: MPLS, Internet Access, Blended Access Options
Integrated to ensure security, reliability, and performance

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Deep industry expertise
Financial
Services
Retail Transport &
Logistics
Government Other Industries
Healthcare

6. Nationwide network 6
• One of the largest private backbone networks in the U.S., >90% coverage
• Secure MPLS network with blended access and SLA guarantees with CoS/QoS
• Platform for carrier business, with AT&T, Verizon and Sprint as major customers
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Secure, fully redundant data centers,
connected by a nationwide private network
Performance
• High speed fiber network between all
locations
Security
• Private MPLS extending from the
customer to EarthLink data centers
Reliability
• Redundant, standardized storage area
network (SAN)
• Hardware-based SAN replication
between sites for data and applications
• Disaster recovery offering with Site
Recovery Management (SRM)
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Our Carrier Customers
EarthLink Business supplies many carriers with
xDSL access elements nationwide, including:
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Blended MPLS Network Diagram
Canadian
Office Cloud
(ADSL) Computing
Providers
IPSec
VoIP
Application Providers
IPsec Exchange
Remote Office Internet
(Cable) POS
Providers
Earthlink Busniess
Core
MPLS Network
Branch 1 Data Center
(PPP/Metro T-1) (Ethernet)
Branch 2 Branch 4
(DSL) (Wireless)
Host Location
Branch 3 (DS-3)
(Frame T-1)
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Blended MPLS – Industry Firsts
• MPLS over ADSL
– Up to 6 classes of service on ADSL
– Honored edge-to-edge
– Flexible tagging options
– Seamless integration into MPLS T1 network
• MPLS over Wireless Data
– Alternative to high-priced fill in
– Wireless and terrestrial network on one contract
– Perfect for backup: True diversity without wireline
– Nationwide 3G Network
– Secure and private
• Never touches the public Internet
• CDMA standard
– Comparable to DSL speeds
• Download speeds between 400-800 Kbps
• Upload speeds between 300-400 Kbps
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Backup Options Overview
• The router will use a dynamic routing protocol or other
mechanism to determine that the primary access has
failed
• The backup access will be activated (if required)
• Traffic will then be sent over the backup access

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MPLS over Wireless Data
Wireless data access fills a gap between high priced or low speed solutions and it provides true diversity from traditional
wireline (loop-based) services.
The diagram below illustrates wireless access
.
12 Edge Networks
New

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Managed Router Service and myLink
Manage network orders, handle service tickets and access valuable
business tools via myLink, the EarthLink Business centralized portal.
• 24x7 technical support with simple, self-
service access to real-time performance
data
• Circuit utilization, discard and error
packets
• Open, update, and monitor service
tickets
• Network status via Google Maps app
and one-click toolbar
• Live chat with Customer Care
• Online invoicing and bill pay
• Robust reporting capabilities
• Proactive, automatic outage detection and
resolution
• 24x7 Ping monitoring
• Outage triggers service ticket
• Proactive email notification for outage
and resolution
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Mylink Portal – Dashboard Components
Ability to update
location for 911
• Account Info
• Quick Links
• Order Status
• Billing
• Service Tickets
• Most Active Data
Circuits
• News & Updates

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EarthLink SIP Trunking: Overview
EarthLink SIP Trunking uses Session Initiation Protocol signaling
and a native IP-based facility to manage all voice traffic between
a customer's IP PBX platform, EarthLink MPLS or public network,
and the Public Switched Telephone Network (PSTN).
Features include:
• Secure, redundant, carrier-class infrastructure
• Standard or aggregate trunking configurations
• Comprehensive service features, including local/LD/toll-free, caller ID, E911
• Network flexibility, with delivery over multiple access types
• Seamless, integrated failover and disaster recovery
• Efficient management and reporting with MyLink portal
• End-to-end implementation support including site-by-site porting

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EarthLink SIP Voice Infrastructure
• Nationwide IP Network • Enhanced feature server
– Cisco Core (CRS1), Cisco Edge (7600) − MetaSphere Enhanced Application
Server (EAS)
– MPLS Backbone used to route voice and
data traffic with CoS
• SIP security and control
• Call switching – ACME Packets Session Border
Controller (SBC)
– Universal Media Gateway (UMG)
Secure messaging for customer-
Class 4 switching (Tandem / Trunking)
facing and internal networks;
Class 5 switching (Features)
management and control of SIP
− MetaSwitch Call Feature Server (CFS) behavior on a per deployment basis
Class 5 features provided by PBX in
trunking environment
• End-to-end call flow
MetaSwitch Call Feature Server
monitoring; VOIP/SS7
UX9024
MetaSwitch Media Gateway
probes
UMG3510 − Empirix

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SIP Business Continuity
• Load Balancing
– Balance traffic between Birmingham and Colorado
• Physical Layer Failover
– Automatic failover between trunking into datacenters
– Each datacenter connection capable of supporting
entire load
• Auto Reroute
– Automatically reroutes traffic to another number if
primary connection is lost

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Network Management and Maintenance
• Highly integrated NMS systems
• 24x7 monitoring & alerting
– Pings the customer WAN IP address every 5 minutes
– Unacknowledged pings automatically opens a service ticket
– Customer alerts via phone /email/text, and MyLink interface
• 24x7 access to maintenance technicians
– Redundant, 24x7 U.S.-based NOCs
– Trouble calls answered by dedicated technicians, all based in the U.S.
• Executive-level escalation
• Secure MyLink Portal
– Billing and ordering status
– Open and monitor service tickets, reporting
– One-click up/down status of all data services
– Embedded Google Maps app for detailed drill-down

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Service Level Agreements
SLA Compensation
Loop MTTR - DS1/DS3 4 Hours 15% MRC
Loop MTTR DSL 18 Hours 15% MRC
Install DS1/DS3 45 Business Days 15% MRC
Install DSL 30 Business Days 15% MRC
Next business day if
isolated to the CPE by 2
CPE MTTR P.M. PST 5% MRC
Network Availability (Core Network) 99.999% 15% MRC
Latency (Round trip, P2P Core Network) 45ms 15% MRC
Data Delivery Ratio (real time) 99.9% 15% MRC
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Project Management
• Keeps project on schedule
• Coordinates EarthLink Business’s internal resources: circuit
provisioning, equipment install, networking testing
• Outlines project roles and responsibilities: inside wiring, building
access, address corrections, definition of demarcation point, etc.
• Serves as the point of escalation during network implementation
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Key Differentiators
• Leading IP infrastructure
• Nationwide footprint
• Solid Nationwide Network with Industry leading Redundancy
• Robust product set, customizable solutions
• End-to-end bi-directional CoS over asynchronous access elements
• Diverse Wireless back-up options over private MPLS
• Personalized support - an extension of your IT staff
• Online portal will consistently monitor your network and automatically open
trouble tickets
• Proven service provider across multiple industries
• EarthLink growth engine with access to capital for network upgrades, new
technologies
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In closing…
Thank You!
Presented by Scott Bridwell
Channel Manager / Partner Channel
877.764.8656 | sbridwell@corp.earthlink.com
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