HERNDON, VA - September 10, 2008 - XO Communications (OTCBB: XOHO) today announced that it has received the Cisco TelePresence Connection Certification for its multiprotocol label switching (MPLS) IP-VPN service. The Cisco certification program for TelePresence services provides businesses with an added level of confidence that service providers such as XO Communications have invested in gaining the capabilities needed for an optimal TelePresence experience.

"Receiving this certification recognizes our investment in our IP network to support the convergence of video, voice and data over a single IP MPLS network," said Tim Shaheen, vice president of the XO Enterprise Solutions Group. "Businesses and large enterprises are increasingly turning to new video applications that help increase productivity while delivering cost savings. Cisco TelePresence offers a powerful business collaboration tool that can be delivered only over robust, high-performance networks like the XO IP network."

The Cisco TelePresence solution creates unique "in-person" experiences that allow companies to connect employees, customers, suppliers and partners. Cisco TelePresence delivers life-size images via ultra-high-definition video (1080p) and high-quality audio within a specially designed environment for the experience of being in the same room with remote participants. By adopting Cisco TelePresence, businesses can achieve cost savings through reduced travel while helping to accelerate productivity and promoting environmental benefits, such as decreased CO2 emission from reduction in travel.

"The Cisco certification program for TelePresence services demonstrates XO Communications' commitment to supporting mission-critical applications that deliver performance reliability, scalability and flexible cost efficiency to businesses," said Suraj Shetty, vice president of service provider marketing for Cisco. "Our innovative TelePresence technology will benefit businesses that want to scale globally while reducing operational costs of business travel or those that want to simply and easily increase productivity and decision making across different locations."

The Cisco Powered TelePresence Connection Certification process goes beyond a static service measurement of network performance. It considers practices based on current industry standards for network architecture, management and performance, including measurement, staff, processes and tools. These are audited regularly to help ensure that service providers are committed and able to offer an optimal Cisco TelePresence experience, providing customers with robust, end-to-end communication solutions that meet their business needs.

The Cisco TelePresence solution is best delivered over a Cisco Certified TelePresence Connection network and networks that take advantage of Cisco IP Next-Generation Network (IP NGN) architecture and innovative technology. In addition to being Cisco TelePresence certified, XO has deployed the Cisco CRS-1 Carrier Routing System in the core of its nationwide IP network, allowing XO to use the Cisco IP NGN architecture to offer customers advanced high-performance IP networking services and solutions. The certification is added to the network quality assurance demonstrated in 2007 when XO's MPLS IP-VPN service received the Cisco Powered designation, demonstrating to businesses and large enterprises that XO Communications has committed to investing in the resources, systems and procedures to deploy, manage and support high-quality managed IP and networking services.

XO MPLS IP-VPN

XO MPLS IP-VPN provides a wide range of access options to connect locations and flexible Classes of Services to prioritize Internet, intranet, extranet, voice, video and mission-critical business applications - all over a single, high-performance application-aware IP network.

Key benefits of XO MPLS IP-VPN include:

• Nationwide Coverage - Broad coverage with service availability in 75 metropolitan markets across the United States.
• Flexible and Scalable Network Architecture - MPLS-based network architecture provides a platform for any-to-any connectivity among all sites, and allows for quick and easy set up of new sites added to the network.
• Broad Range of Access Options - Customers can utilize the service with Dedicated Internet Access at speeds from T-1 through OC-X and Ethernet services.
• Robust Classes of Service - Optimize data traffic flows to support any type of application with one flat rate for access to all four classes of service.
• Fully Managed - Reduces total cost of ownership and provides 24x7 monitoring of network facilities and equipment.

For more information about XO MPLS IP-VPN or other XO services go to www.xo.com, or contact an XO sales representative by calling (888) 718-7595.