Global Telecom & Technology Appoints Richard D. Calder, Jr. As Its President And Chief Executive Officer



Telecom Industry Veteran to Lead Company’s Next Growth Phase


MCLEAN, Va., May 10, 2007 – Global Telecom & Technology, Inc. (“GTT”),
(OTCBB: GTLT), a global Multi-Network Operator (MNO), announced that its
board of directors has named Richard D. (Rick) Calder, Jr. to serve as the
company's chief executive officer and president effective May 14, 2007.

Mr. Calder, 43, will assume full strategic and operational responsibility for the
company and will also join the company’s Board of Directors effective June 6,
2007. H. Brian Thompson, who had been serving as interim chief executive
officer since February 2007, will continue in his roles as the company’s executive
chairman and chairman of GTT’s Board of Directors.

Mr. Calder has spent his entire 22-year career in the telecommunications arena.
Most recently, he served as the president and chief operating officer of InPhonic,
Inc. a leading provider of wireless services and products. Prior to InPhonic, Mr.
Calder was president of Business Enterprise & Carrier Markets at Broadwing
Communications. He held senior management positions at Winstar
Communications, and prior to Winstar, Mr. Calder co-founded GO
Communications, a wireless communications company. In his early career, Mr.
Calder held various marketing and business development positions at MCI
Communications, and various marketing and engineering positions at Tellabs,
Inc. Mr. Calder received a BS in Electrical Engineering from Yale University and
an MBA from the Harvard Business School.

“We are very excited to have Rick join GTT,” commented H. Brian Thompson,
executive chairman, GTT. “We have aggressive goals for GTT and the board of
directors and I believe that Rick is the best person to lead the company into its
next growth phase. Rick brings over two decades of leadership in the
telecommunications industry, with significant experience in growing emerging-
stage public companies into industry leaders. His deep knowledge of the
sophisticated requirements of both enterprise and carrier customers will benefit
GTT greatly as we accelerate the growth and penetration of our innovative multi-
network operator solutions into the market. And, Rick’s proven ability to build top
performing management teams, lead rapid company growth, and manage the
integration of acquisitions will be instrumental in driving shareholder value and
the overall success of GTT.”

"I am delighted to join GTT and look forward to working closely with Brian, our
Board of Directors, our employees, our valued customers and partners, and our
shareholders as we look to promote the rapid growth and success of the
company,” said Mr. Calder. “GTT is uniquely positioned with an extremely
compelling customer focused value proposition and innovative multi-network
model at a time when the telecom market is seeking new and effective
approaches to service and quality. I am very enthusiastic about my new role and
the prospects for GTT during this exciting time.”

About GTT
Formed in October 2006, following the acquisition by Mercator Partners
Acquisition Corp. of Global Internetworking Inc and European
Telecommunications & Technology Limited, Global Telecom & Technology, Inc.
("GTT") (OTCBB:GTLT - News) is a new type of service provider: a Multi-
Network Operator ("MNO").

As a Multi-Network Operator, GTT does not own the infrastructure upon which its
services are provided. Instead, GTT designs solutions based on its customer's
requirements, using a combination of telecommunications networks and
technologies. Unlike traditional network centric carriers, GTT provides best-of-
breed solutions by procuring, integrating and managing components of these
various networks on its customers' behalf. GTT has taken the inherent
advantages of the Multi-Network Operator approach to a new level through a
combination of powerful network design and pricing tools; a global service
footprint; a deep and broad set of strategic vendor relationships; and above all,
an expert team committed to delivering outstanding end-to-end customer service.

Headquartered in McLean, Virginia and with offices in London, Paris, Dusseldorf,
New Delhi, and New York, GTT provides a global service footprint covering more
than 50 countries, and it has more than 200 customers and in excess of 100
carrier partnerships around the world. For more information visit the GTT web
site: www.gt-t.net

Forward-Looking Statement
Some of the statements made by GTT in this press release, including without
limitation statements regarding GTT's anticipated future growth, financial
performance and transactional activity, are forward-looking in nature. GTT
intends that any forward-looking statements, as defined in Section 21E of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), shall be
covered by the safe harbor provisions for such statements contained in Section
21E of the Exchange Act. Statements that are predictive in nature, that depend
upon or refer to future events or conditions, or that include words such as "may,"
"will," "should," "expects," "anticipates," "intends," "plans," "believes," "estimates,"
"predicts," "potential," "continues" and similar expressions are forward-looking
statements. Forward-looking statements involve known and unknown risks and
uncertainties that may cause the company's actual future results to differ
materially from those projected or contemplated in the forward-looking
statements. GTT believes that these risks include, but are not limited to: GTT's
ability to develop and market new products and services that meet customer
demands and generate acceptable margins; GTT’s ability to execute with respect
to growth plans and/or acquisition strategies; GTT's reliance on several large
customers; the complexities of carrying on business on an international basis;
GTT's ability to negotiate and enter into acceptable contract terms with its
suppliers; GTT's ability to attract and retain qualified management and other
personnel; continued development of GTT's information technology platforms;
failure of the third-party communications networks on which GTT depends; GTT's
ability to successfully complete the integration of its operating companies
following the acquisitions; and competition and other risks associated with the
communications sector in general and the multi-network operator sector in
particular. Additional information concerning these and other important factors
can be found under the heading "Risk Factors" in GTT's annual and quarterly
reports filed from time to time with the Securities and Exchange Commission
including, but not limited to, its Annual Report on Form 10-K filed in April 2007.
Statements in this release should be evaluated in light of these important factors.

Company Contacts

Media Inquiries:
Adriana Cassandro
Corporate Communications Manager, GTT EMEA
+44 (0)20 7029 4801
Adriana.cassandro@gt-t.net

Investor Inquiries:
Trish Drennan
Investor Relations
+1.703.725.7625
tdrennan@gt-t.net