Subject: [NEXTEL-1] NII Holdings, Inc. Selects TSI for Clearing and Settlement Services

From: [email-masked]
Date: Fri, 16 May 2003 04:20:56 -0400

TAMPA, Fla.--(BUSINESS WIRE)--May 15, 2003-- News Summary: NII Holdings Selects TSI to
Provide Clearing and Settlement Services. TSI Launches New TAP Record Re-Rating Feature.

TSI Telecommunication Services Inc. (TSI), a global communications technology company,
today announced it has contracted with NII Holdings (Nasdaq:NIHD), formerly known as Nextel International, to provide
ACCESS® S&E clearinghouse services for NII's properties located in Argentina, Brazil,
Mexico and Peru. ACCESS S&E clearinghouse services, designed specifically for the
transferred account procedure (TAP) record format, simplifies the exchange of roamer
billing data between wireless operators by providing a single, authorized receipt point
for call detail records.

ACCESS S&E services will enable NII to facilitate subscriber billing by exchanging data
between NII and its roaming partners, and converting call records between various TAP specifications.

NII will also use TSI's new ACCESS S&E call re-rate feature, which addresses nearly every
possible rate scenario including public mobile network to public mobile network (PMN), called country, flat rate,
in/out-of-network roaming, incremental minutes of use, zone rates, national/international
rate plans and others.

"NII selected TSI over its competitors for the quality and breadth of their product as
well as their on-site training and willingness to develop system functionality to
accommodate our specific business and technical needs," said Martha Parowski, NII's vice
president of customer operations. "TSI has supported wireless carriers as a clearinghouse
for many years. Their knowledge and expertise are a great compliment to NII's commitment
to offer the most effective communications solutions to corporate clients, enabling them
to get business done."

TSI is the clearinghouse of record for the majority of North American operators and was
the first to solve the unique requirements related to North American TAP record clearing. TSI's clearinghouse services
feature a Web-enabled reporting system that allows operators to download various clearing and settlement reports for
financial analysis.

"ACCESS S&E will enable us to better manage and protect our roaming revenues," said John
McMahon, NII's vice-president of business operations. "Our selection is in line with our
business strategy to become the wireless carrier of choice for businesses by bringing high
expectations in terms of service quality and customer support in the markets in which we
operate."

"We have tremendous respect for NII's unique service offering and are very pleased to
provide clearinghouse services in support of their global reach," said Michael O'Brien,
TSI vice president, marketing. "Behind the scenes of seamless service to
subscribers lies a complex process of exchanging information between properties and
roaming partners, as well as managing information related to subscriber rate plans. By using ACCESS S&E, NII will reap the full
rewards of tightly managed roaming revenue and increased subscriber satisfaction based on accurate billing."

About TSI

TSI Telecommunication Services Inc. (TSI) is a global communications technology company
specializing in innovative business and network engineering solutions that manage and interconnect voice and data systems in
26 countries throughout North America, Central and Latin America, Asia Pacific and Europe. TSI provides technology
interoperability, network services and call processing to more than 250 mobile operators, wireline carriers, emerging telecom
market entrants and business customers. Products include SS7 intelligent network solutions, clearing and settlement
services, voice and data roaming facilitation, fraud management, revenue enhancement solutions and more than 25 other
integrated services. TSI is a privately owned corporation headquartered in Tampa, Fla., U.S.A., with offices in major cities
throughout the United States and offices in Amsterdam, London, Luxembourg, Beijing and
Hong Kong. 

For more information, visit http://www.tsiconnections.com.

CUSIP: 87287VAB8 Bloomberg Tickers: TSITEL (Bond) 32497Z (Equity)

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