Released on = June 28, 2007, 6:33 am

Press Release Author = MRB Public Relations, Inc.

Industry = Telecommunications

Press Release Summary = ADTRAN®, Inc. (NASDAQ: ADTN), a leading supplier of
networking equipment, today announced that MegaPath, a leading provider of managed
IP voice, data and security services in North America, has selected ADTRAN's
NetVanta® 3120 and 3130 IP Fixed-port Access Routers for deployments with their
services to Small and Midsized Business (SMB) and Enterprise customers.

Press Release Body = NetVanta 3120/3130 Provide Cost-Effective Solutions for SMB and
Enterprise Applications

HUNTSVILLE, Ala.-(June 28, 2007)-ADTRAN®, Inc. (NASDAQ: ADTN), a leading supplier of
networking equipment, today announced that MegaPath, a leading provider of managed
IP voice, data and security services in North America, has selected ADTRAN's
NetVanta® 3120 and 3130 IP Fixed-port Access Routers for deployments with their
services to Small and Midsized Business (SMB) and Enterprise customers.

"ADTRAN's NetVanta routers provide the business-class features we need at an
attractive price point," said Beth Tyebjee, senior vice president of marketing,
MegaPath. "These products give us a compelling hardware solution offering Virtual
Private Networking (VPN), dial back-up, and Quality of Service for Voice over IP
(VoIP) applications. In addition, these platforms offer superior quality and
reliability. This is especially important for our SMB and Enterprise customers where
downtime is simply not an option."

MegaPath is using the ADTRAN NetVanta routers to deliver secure, high speed Internet
access and voice services for its SMB customers. In addition to these services,
MegaPath is also using the ADTRAN NetVanta routers to provide secure MPLS/IPsec VPNs
for its enterprise customers.

"We are pleased MegaPath has standardized on our NetVanta routers for deployment
with their services," said Tim Saunders, vice president of product management,
ADTRAN Enterprise Networks Division. "These products were designed specifically to
address the needs of both the SMB and Enterprise and are a perfect fit for
MegaPath's target markets."

The NetVanta 3120 is a fixed-port Ethernet router with an integral four-port VLAN
Ethernet switch. This product is ideal for secure, high-speed Internet access and
corporate connectivity using broadband access such as DSL or cable. The NetVanta
3130 is a fixed-port ADSL/ADSL2/ADSL2+ IP access router with an integral four-port
VLAN Ethernet switch. This product is designed for carrier bundled service offerings
and secure, high-speed Internet access and corporate connectivity. In addition to
supporting ADSL (Annex A), and ADSL2, the NetVanta 3130 supports today's most
advanced ADSL technology, ADSL2+, for applications taking advantage of its greater
reach and higher bandwidth, up to 25Mbps. Both platforms provide VPN as a standard
feature as well as analog dial backup for disaster recovery.

About MegaPath
MegaPath is the leading provider of managed IP communications services in North
America. MegaPath leverages its wide selection of broadband connectivity, Virtual
Private Networks, Voice over IP (VoIP) and security technologies to enable
businesses to lower costs, increase security and enhance productivity.

Businesses of all sizes can easily and securely communicate between their
headquarters, branch offices, retail locations, mobile workers, and business
partners. To learn more about why over 21,000 companies have chosen MegaPath's
managed IP data, voice and security services to improve their business
communications, visit www.megapath.com or call 1-877-MegaPath (634-2728).

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 microwave 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.

###

Contact:
Tammie Dodson
ADTRAN
256-963-6739
tammie.dodson@adtran.com


Web Site = http://

Contact Details = Tammie Dodson
ADTRAN
256-963-6739
tammie.dodson@adtran.com