XO ® SIP The Preferred IP-PBX Interface Howard Grant Senior Account Executive XO Communications |105 Molloy St. | Nashville, TN 37201 Direct: 615.495.8413 | E-Fax: 615.345.1680 | Care: 800.424.0583

Addressing Your Key Communications Needs Leverage capabilities of the IP-PBX Streamline Capital and Operating costs Increase Productivity and Simplify Operations Maintain Reliability—Business-class service, dependable provider Increase flexibility. Adjust quickly to change Superior Service. Responsive Support that understands your business needs

Leverage capabilities of the IP-PBX

Streamline Capital and Operating costs

Increase Productivity and Simplify Operations

Maintain Reliability—Business-class service, dependable provider

Increase flexibility. Adjust quickly to change

Superior Service. Responsive Support that understands your business needs

Business-class service supported by Provider who serves business exclusively Tier 1 nationwide network Track record that spans more than a decade Over 500,000 VoIP users nationwide Award-winning, world-class network infrastructure 75 major U.S. markets XO®—Solving Problems

Business-class service supported by

Provider who serves business exclusively

Tier 1 nationwide network

Track record that spans more than a decade

Over 500,000 VoIP users nationwide

Award-winning, world-class network infrastructure

75 major U.S. markets

The National Local Exchange Carrier™ for business Market leader in bringing VoIP services to businesses Feature-rich options tailor XO SIP to your needs Single point of contact for voice and data for all your locations Single, consistent bill helps you stay on top of your budget Configure voice services to fit your changing employee needs XO®—Solving Problems

The National Local Exchange Carrier™ for business

Market leader in bringing VoIP services to businesses

Feature-rich options tailor XO SIP to your needs

Single point of contact for voice and data for all your locations

Single, consistent bill helps you stay on top of your budget

Configure voice services to fit your changing employee needs

SIP is the preferred connection to an IP-PBX with a native IP interface SIP removes the need to manage a separate box for protocol conversion (IP to TDM) SIP also means that customers no longer need a costly PRI card in their PBX Provides two benefits to the customer: Lowers capital costs Better throughput on existing bandwidth by removing bandwidth-consuming protocol conversions With a native SIP interface, customers will have an optimal VoIP experience and can fully utilize a VoIP solution Virtual DIDs and Compression Rich feature-set with minimal cost XO® SIP—the Right Solution

SIP is the preferred connection to an IP-PBX with a native IP interface

SIP removes the need to manage a separate box for protocol conversion (IP to TDM)

SIP also means that customers no longer need a costly PRI card in their PBX

Provides two benefits to the customer:

Lowers capital costs

Better throughput on existing bandwidth by removing bandwidth-consuming protocol conversions

With a native SIP interface, customers will have an optimal VoIP experience and can fully utilize a VoIP solution

Virtual DIDs and Compression

Rich feature-set with minimal cost

XO® SIP Product Description XO SIP is: A Business-class Integrated Voice and Data Service with c onnectivity provided to a customer ’ s IP-PBX as native SIP Provides business customers with voice, data and web hosting for a simple price Utilizes Dynamic Bandwidth Allocation Customizable Calling Plans Local DIDs Dedicated Internet access Hosting Service Managed router Online Feature Management Available Speeds 1.5 Mbps 3.0 Mbps - 4.5 Mbps (2XT1 with MLPPP) 10.0 Mbps (utilizes Ethernet over copper or serial DS1s) DS3 Optional Features Compression Virtual DIDs Additional FXS lines Auto Attendant Call Center Voice VPN Account Codes (apply to all call types, not just LD)

XO SIP is:

A Business-class Integrated Voice and Data Service with c onnectivity provided to a customer ’ s IP-PBX as native SIP

Provides business customers with voice, data and web hosting for a simple price

Utilizes Dynamic Bandwidth Allocation

Customizable Calling Plans

Local DIDs

Dedicated Internet access

Hosting Service

Managed router

Online Feature Management

Available Speeds

1.5 Mbps

3.0 Mbps - 4.5 Mbps (2XT1 with MLPPP)

10.0 Mbps (utilizes Ethernet over copper or serial DS1s)

DS3

Optional Features

Compression

Virtual DIDs

Additional FXS lines

Auto Attendant

Call Center

Voice VPN

Account Codes (apply to all call types, not just LD)

XO® SIP Value Proposition Boost Network Performance Eliminates the need for protocol conversions Provides seamless communications across multiple IP sites Squeezes more capacity out of T-1 circuits with SIP compression technology Simple Combines voice and data traffic on a single circuit using dynamic bandwidth allocation Price based on bandwidth requirements, regardless of lines Customizable Call Plan Flexible Scalable bandwidth (access) options from 1.5 to 45 Mbps Compatible with leading IP-PBX systems Make changes with Web-based administrative portal 24 X 7 X 365 customer care Cost effective Maximize bandwidth performance with Voice over IP and data applications running over the same circuits Unlimited local calling and site-to-site calling

Boost Network Performance

Eliminates the need for protocol conversions

Provides seamless communications across multiple IP sites

Squeezes more capacity out of T-1 circuits with SIP compression technology

Simple

Combines voice and data traffic on a single circuit using dynamic bandwidth allocation

Price based on bandwidth requirements, regardless of lines

Customizable Call Plan

Flexible

Scalable bandwidth (access) options from 1.5 to 45 Mbps

Compatible with leading IP-PBX systems

Make changes with Web-based administrative portal

24 X 7 X 365 customer care

Cost effective

Maximize bandwidth performance with Voice over IP and data applications running over the same circuits

Unlimited local calling and site-to-site calling

Native SIP Access to Customer’s IP-PBX XO® SIP provides configuration guides to customers with IP-PBXs certified during Interoperability testing Interoperability-certified IP-PBXs for XO SIP Click here for a full list of : Interoperability-certified IP-PBXs Interoperability Testing continues on other PBXs

XO® SIP provides configuration guides to customers with IP-PBXs certified during Interoperability testing

Interoperability-certified IP-PBXs for XO SIP

Click here for a full list of : Interoperability-certified IP-PBXs

Interoperability Testing continues on other PBXs

Dynamic Bandwidth Allocation Dedicated Voice and Data Channels - No Capacity Flexibility as Demand Fluctuates Capacity Continuously Adjusts to On-going Demand Fluctuations (Voice Always has Priority) Channeled TDM Voice Data Voice Data IP Dynamic Bandwidth

Select Compression Option that works for you Uncompressed calls use a codec of G.711 G.711 is XO® standard protocol for XO® SIP XO SIP offers the customer the choice of compression: G.729a G.729a compresses the packet size of voice calls, allowing more simultaneous voice calls on the same bandwidth Additional monthly charge applies

Uncompressed calls use a codec of G.711

G.711 is XO® standard protocol for XO® SIP

XO SIP offers the customer the choice of compression: G.729a

G.729a compresses the packet size of voice calls, allowing more simultaneous voice calls on the same bandwidth

Additional monthly charge applies

Customizable Calling Plans Select Calling Plan that’s right for you Calling Plans include: Unlimited Local Calling (subject to normal business use) Unlimited Site to Site Calling between your locations No charge for calls between your following locations XO® SIP XOptions® Flex XO® IP Flex XO® IP Flex with VPN XO® One iPBX Selection of LD minutes for inbound and outbound calling

Select Calling Plan that’s right for you

Calling Plans include:

Unlimited Local Calling (subject to normal business use)

Unlimited Site to Site Calling between your locations

No charge for calls between your following locations

XO® SIP

XOptions® Flex

XO® IP Flex

XO® IP Flex with VPN

XO® One iPBX

Selection of LD minutes for inbound and outbound calling

Virtual DIDs—Be there NOW! Virtual DIDs give customers a presence in markets where they do not physically have an office Useful for organizations that serve many markets from a single office location Virtual DIDs meet market needs For inbound calling Calls made from Virtual DIDs are billed at local rates Available in all XO® markets within the SIP Network footprint Additional Monthly Charge applies

Virtual DIDs give customers a presence in markets where they do not physically have an office

Useful for organizations that serve many markets from a single office location

Virtual DIDs meet market needs

For inbound calling

Calls made from Virtual DIDs are billed at local rates

Available in all XO® markets within the SIP Network footprint

Additional Monthly Charge applies

Additional Foreign Exchange Station (FXS) Lines to meet your needs FXS lines are similar to analog lines and are an option for XO® SIP customers Analog lines provided to customers directly out of the managed router and typically bypass the PBX Available only to customers with uncompressed 1.5Mbps or 3.0 Mbps port speeds FXS lines are used for: Alarm lines Fax lines Modem lines

FXS lines are similar to analog lines and are an option for XO® SIP customers

Analog lines provided to customers directly out of the managed router and typically bypass the PBX

Available only to customers with uncompressed 1.5Mbps or 3.0 Mbps port speeds

FXS lines are used for:

Alarm lines

Fax lines

Modem lines

Secure, web-based Business Center and Online Feature Management tool allows you to self-administer changes: Track Web Statistics View and Pay invoices online Configure: Auto Attendants, Call Centers, Voice VPN Online Feature Management

Secure, web-based Business Center and Online Feature Management tool allows you to self-administer changes:

Track Web Statistics

View and Pay invoices online

Configure:

Auto Attendants,

Call Centers,

Voice VPN

Flexible Features without the high cost Auto Attendant Powerful, flexible tool fields, delivers inbound calls to intended destination through interactions with the caller Call Center Provides a complete business-ready application to help businesses establish technical assistance lines, customer support numbers, or order-taking centers Voice VPN Provides common dial plans for callers in different locations Available to any combination of the following site types: XOptions® Flex XO® SIP XOptions® Flex with VPN XO® iPBX (those sites with Flex as the access method)

Auto Attendant

Powerful, flexible tool fields, delivers inbound calls to intended destination through interactions with the caller

Call Center

Provides a complete business-ready application to help businesses establish technical assistance lines, customer support numbers,

or order-taking centers

Voice VPN

Provides common dial plans for callers in different locations

Available to any combination of the following site types:

XOptions® Flex

XO® SIP

XOptions® Flex with VPN

XO® iPBX (those sites with Flex as the access method)

XO® SIP vs. TDM IP-PBX Media Gateway SONUS GSX PSTN IP Feature Server Broadsoft VMail Server CLR Class 5 DMS/5ESS 1/0 DCS 3/1 DCS DS1 SIP Router TDM-based Service GR303 DS1 IP PBX XO SIP –0ptimaizing the VoIP experience Lower cost better throughput on existing bandwidth by removing bandwidth-consuming protocol conversions Customer Gateway

XO SIP –0ptimaizing the VoIP experience

Lower cost

better throughput on existing bandwidth by removing bandwidth-consuming protocol conversions

XO® SIP Simplifies Pricing XO® introduces a new pricing concept Simple, unique Lines don’t matter, bandwidth does! We’re an IP company and voice is just an IP application Right-sized pricing Bandwidth plus Calling Plan pricing means customers choose a plan that fits their business Pricing is easy as 1-2-3 Pick your port speed Select the Calling Plan sized to your customer’s needs Tailor the pricing with added options

XO® introduces a new pricing concept

Simple, unique

Lines don’t matter, bandwidth does!

We’re an IP company and voice is just an IP application

Right-sized pricing

Bandwidth plus Calling Plan pricing means customers choose a plan that fits their business

Pricing is easy as 1-2-3

Pick your port speed

Select the Calling Plan sized to your customer’s needs

Tailor the pricing with added options

Contact: Howard Grant Senior Account Executive XO Communications 105 Molloy St. | Nashville, TN 37201 615.495.8413

Howard Grant

Senior Account Executive

XO Communications

105 Molloy St. | Nashville, TN 37201

615.495.8413