Released on: September 17, 2008, 10:44 pm

Press Release Author: Gary Bolton (VP Marketing and PLM)

Industry: Telecommunications

Press Release Summary: “The judges’ selection underlines our commitment to
delivering best-in-class solutions to service providers worldwide looking to grow
new top-line revenue while reducing costs.”

Press Release Body: RESEARCH TRIANGLE PARK, N.C.--(BUSINESS WIRE)--Hatteras
Networks, the global leader in flexible Ethernet solutions for enterprise access
services and next-generation mobile backhaul, announced today that the International
Engineering Consortium (IEC) has named Hatteras Networks a finalist in two
categories for its prestigious InfoVision Award. Hatteras Networks’ 3rd generation
HN4000 product family has been selected in the Access Network Technologies and
Services category, and Hatteras’ latest breakthrough product innovation, to be
unveiled later this year, is a finalist in the New Product Concepts category.

Hatteras Networks’ EtherFLEX solutions revolutionize Metro Ethernet and Mobile
Backhaul delivery for service providers, allowing them to deliver robust and
resilient transport services for business connectivity and mobile wireless backhaul
over the existing last-mile, copper infrastructure. The service creation
capabilities provided by Hatteras Networks’ EtherFLEX solutions, allow service
providers to significantly increase the capacity and resiliency of data, voice and
video services over their access networks.

The InfoVision Award finalists were selected by a panel of judges from the Broadband
World Forum Europe 2008 Technical Program Committee, which consists of industry
experts from vendor companies, service providers and industry associations. Entries
were judged according to the value of the technology, its overall quality of
innovation and its contribution to technology advancement and industry growth, as
well as its degree of success in the marketplace.

“The IEC’s InfoVision Awards commend the top contributors to the information and
communications technologies (ICT) industry. We’re extremely pleased to recognize
Hatteras Networks as an InfoVision finalist for two of its innovative Mid-Band
Ethernet and Mobile Backhaul solutions,” announced IEC President John Janowiak.

“We are delighted to receive this level of recognition from the IEC for our
industry-leading family of Mid-Band Ethernet and Mobile Backhaul products which
offer service providers a compelling value proposition and quick return on
investment,” said Kevin Sheehan, CEO of Hatteras Networks. “The judges’ selection
underlines our commitment to delivering best-in-class solutions to service providers
worldwide looking to grow new top-line revenue while reducing costs.”

Winners of this year’s InfoVision Award will be announced at the Broadband World
Forum Europe on Tuesday, 30 September 2008 at the Brussels Expo, Brussels, Belgium.

About Hatteras Networks

Hatteras Networks is redefining the way carriers think about Ethernet services.
Hatteras Networks’ EtherFLEX service delivery solutions are leading Service
Providers worldwide to a $24 billion expansion of the Metro Ethernet market, which
had previously been limited to the fiber footprint. Historically, T1s and E1s have
been the fundamental building blocks for voice and data business services. Now,
Service Providers can cost- effectively offer up to 45 Mbps Mid-Band Ethernet
services over existing copper facilities, enabling businesses to migrate from legacy
Frame Relay, ATM and T1/E1 connections to transparent Ethernet services for voice
and data business connectivity, infrastructure backhaul and mobile wireless backhaul
solutions.

Already deployed on five continents, Hatteras Networks solutions are enabling a
market expansion for carriers that is as significant for business services as
“triple play” is for residential. For more information, visit
www.hatterasnetworks.com.

Web Site: http://www.hatterasnetworks.com

Contact Details: Address: 523 Davis Dr., Suite 500; Durham, NC 27713

Phone & Fax Number: (919) 991-5440; Fax: (919) 991-0731

Email ID: info@hatterasnetworks.com