Frontier Approves ADTRAN Total Access 5000 Multi-Service Access and Aggregation Platform


Approval of Flagship Platform Extends Reach into Frontier's Network

HUNTSVILLE, Ala. - April 16, 2007 - ADTRAN, Inc., a leading supplier of next-generation network solutions, today announced that Frontier Communications, a subsidiary of Citizens Communications Company (NYSE:CZN), has approved ADTRAN's Total Access 5000 Multi-Service Access and Aggregation Platform for deployment in its network. This approval extends ADTRAN's reach into Frontier's network, which already uses ADTRAN's Total Access 3000 and remote DSLAM products.

"ADTRAN is a long-term, strategic partner for Frontier's access networks," said Michael Golob, vice president of Network Services and Technology, Frontier. "We have been extremely pleased with ADTRAN's service and commitment. Acceptance of the Total Access 5000 as an Ethernet DSLAM and broadband DLC will enhance our relationship. More importantly, it will allow Frontier to continue to provide cost-effective next-generation services to our customers."

"The independent market is a core business area for ADTRAN," said P.
Steven Locke, vice president of Sales, Service Providers, ADTRAN. "Our focus on independent customers is unparalleled in the industry, and the Total Access 5000 is another example of our commitment to this market."

The ADTRAN Total Access 5000 is a carrier class multi-service access and aggregation platform that bridges the gap between existing and next-generation networks. It supports both legacy and emerging service interfaces over copper and fiber, easily scaling to support bandwidth intensive applications. The Total Access 5000 provides a clear migration path for traditional services such as voice through its flexible network uplink options, including support for both TDM and VoIP switches. Its ability to convert traditional voice and legacy data to IP provides carriers with a platform that seamlessly integrates with IP Multimedia Subsystems (IMS) standards.

About Frontier

Frontier Communications is part of Citizens Communications Company
(NYSE: CZN), a full-service communications provider and one of the largest local exchange telephone companies in the country. Frontier offers telephone, television and Internet services, as well as wireless broadband data networks, bundled offerings, ESPN360 streaming video, residential security solutions and specialized bundles for small businesses and home offices. Additional information about Frontier's products and services is available at www.frontieronline.com. For more information about Citizens Communications, visit www.czn.net

About ADTRAN

ADTRAN, Inc. is a leading global provider of networking and communications equipment, with a portfolio of more than 1,600 solutions for use in the last mile of today's telecommunications networks. Widely deployed by carriers and enterprises alike, ADTRAN solutions enable voice, data, video, and Internet communications across copper, fiber, and wireless network infrastructures. ADTRAN solutions are currently in use by every major U.S. service provider and many global ones, as well as by thousands of public, private and governmental organizations worldwide.

For more information, contact the company at 800 9ADTRAN (800 923-8726) or via email at info@adtran.com. On the Web, visit www.adtran.com

Contacts:

Tammie Dodson,
ADTRAN, Inc.,
256-963-6739,

tammie.dodson@adtran.com

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