Xtera NXT 20 Gbit/s Differential Phase Shift Key (DPSK) Technology Selected by GlobeNet

ALLEN, TX, Aug 17 (MARKET WIRE) --
Xtera, a leading network infrastructure provider, announced today that
GlobeNet, a leading wholesale carrier for international transport and
capacity to South America, and a subsidiary of Oi (listed on both NYSE
and Bovespa exchanges) has selected the Xtera NXT 20 Gbit/s Differential
Phase Shift Key (DPSK) technology as part of its submarine network
upgrade. The NXT system offers advanced monitoring capabilities that
support rapid system responses to faults, reduces power consumption,
provides higher reliability sealed clam-shell circuit packs, and is NEBS
Zone-4 earthquake compliant. GlobeNet is utilizing the Xtera technology
as part of its submarine network capacity upgrade to 360 Gbps, which will
be completed by August 2009.

"End users across South America are driving innovation and demand for
Internet-based products and services. This demand spans countries,
segments, and sectors, requiring carriers and ISPs to upgrade existing
network infrastructure," said Erick Contag, Chief Operating Officer,
GlobeNet. "GlobeNet is uniquely positioned to deliver the capacity
required to enable carriers to meet this market need, and with Xtera's
leading-edge 20 Gbit/s technology we are able to maximize the capacity of
our network. No other carrier's carrier can match our International
submarine system in terms of latency, reliability, redundancy or number of
on-net locations we can provide throughout Brazil," added Contag.

"We were delighted to have been selected by GlobeNet to deploy the 20G
DPSK technology as part of its submarine network upgrade," said Jon
Hopper, CEO, Xtera Communications. "The supplier and equipment standards
required were demanding but the benefits and innovation delivered by
Xtera's technology and highly skilled resources met all the critical
criteria established to win this important project," added Hopper.

About GlobeNet

GlobeNet is an international carrier's carrier which operates the most
advanced, fully redundant, and lowest latency submarine fiber optic
network linking North and South America. GlobeNet is a subsidiary of
"Oi," which is headquartered in Rio de Janeiro, Brazil. Oi is Brazil's
largest telecom company, focused in offering integrated telecommunication
services with a nationwide reach. Oi is a leader in converged
fixed-mobile solutions as well as a full service telecommunications
operator which includes in its product portfolio services such as rich
voice (with local calling services, long distance and wireless), data
communications, Internet, and managed services for the individual,
residential, corporate and government customers. GlobeNet is
headquartered in Boca Raton, FL, U.S. and is the international subsidiary
for Oi services.

For more information, please visit www.globenet.net

About Xtera Communications

Xtera Communications specializes in network infrastructure that delivers
the highest capacity, reach and density. Our long-haul, Submarine, Metro
and WAN technologies together with our deployment expertise drive customer
success and long term value.

Xtera offers an extensive portfolio of Optical Transport solutions for
long-haul, regional, metropolitan and sub-sea networks, and WAN Traffic
Management solutions for both enterprise and telecom companies.

With deployments in five continents, Xtera's Optical Transport portfolio
helps service providers worldwide reach new markets via new deployments,
and extends the life of their existing network assets with cost-effective
upgrades. Xtera's innovative WAN Traffic Management solutions offer
customers the best price/performance in network optimization.

Xtera delivers compelling advantage to its customers by maximizing network
capacity, reach and value.

For more information, please visit www.xtera.com

Press Contact:

Tony Frisch
Xtera Communications
T +44 1708 335 229
E tony.frisch@xtera.com

Mariana Pitta
Corporate Communications Oi
T +55 21 3131-1603
E mariana.pitta@oi.net.br

Copyright 2009, Market Wire, All rights reserved.

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