REDWOOD CITY, CA–( EMWNews – April 1, 2008) – Ascendent Systems, a subsidiary of

Research In Motion (NASDAQ: RIMM) (TSX: RIM), and Sprint (NYSE: S) today

announced the deployment of Sprint Mobile Extension, powered by Ascendent

Systems, at Lee County Sheriff’s Office, a full service law enforcement

agency servicing Lee County, Fort Myers Beach and Bonita Springs. This

technology enables law enforcement agents patrolling Lee County to respond

faster to real emergencies such as robberies, accidents and other crimes.

Sprint Mobile Extension was integrated with the existing telephone

infrastructure of the Sheriff’s Office to deliver fixed-mobile convergence

capabilities to commanders and deputies who are away from their desks. The

technology extends the identity and functionality of the desk phone out to

any mobile device, thus simplifying how deputies communicate and check

voicemail while away from their desks. With this solution, agents and

command staff are able to have one phone number to be reached at and have

their desk phones simultaneously ring with their mobile devices to help

ensure that they do not miss important calls and can respond to situations

immediately. Also, being able to make a call from their mobile phone and

extend their desk phone number instead of their mobile number was an

important security feature for the department.

“When we first learned about Mobile Extension and its fixed-mobile

convergence capabilities, the most impressive element was its seamless

integration. We were so accustomed to inconveniences, such as missed calls

and multiple voicemails, that we had no idea of the benefits of true voice

mobility,” said Captain Richard Schneiders of Lee County Sheriff’s Office.

“We’ve seen vast improvements in both productivity and collaborative

efforts since deploying Mobile Extension, and our citizens are better

served as a result.”

Officers also have the ability to access desk phone features such as

extension dialing, transfer, park, hold and conference, all from their

mobile devices, making it easier for them to collaborate with other staff

members on the move. Another important feature to the commanders is the

ability to extend office caller ID from a mobile device, thereby protecting

the privacy of their mobile numbers.

Through its strategic partnership with Ascendent Systems, Sprint can

provide sophisticated enterprise voice mobility to its corporate users

nationwide. Mobile Extension works with any phone, including BlackBerry®

smartphones, other mobile phones, desk phones and home phones, and supports

both TDM and IP corporate phone systems.

“Perception is shifting around fixed-mobile convergence, and this

deployment is further validation that it can now be easily integrated into

a variety of telephony environments,” said Theron Dodson, Director of Sales

and Marketing for Ascendent Systems. “The deployment of Mobile Extension

at Lee County Sheriff’s Office is a great example of how voice mobility

technology can be used by law enforcement organizations to be more

responsive to citizens.”

Lee County has also equipped patrol cars with upgraded Mobile Broadband

(based on EVDO technology) cards, offering applications such as IP video

telephony, the industry leading Nextel Direct Connect push-to-talk service

and multi-user video conferencing directly from the car. Broadband speed

means streaming video and high speed data uploads are feasible, which can

be especially helpful for patrol officers handling mug shots, reports,

line-ups, criminal pursuit or emergency evacuations in the field. “As law

enforcement and computing become more and more sophisticated, we’re

requiring more bandwidth than we ever thought possible. Sprint Mobile

Broadband allows us to push the data out to patrol cars, enabling officers

to have the same abilities in their car as at their desk,” according to

Captain Schneiders.

“Today’s mobile workforce, whether it’s a sales team or law enforcement

agency, no longer wants to be fixed to a desk. We’re finding numerous

customers turning to fixed-mobile convergence as the choice to enable

mobility,” said Darlene Braunschweig, Vice President of Converged Network

Solutions at Sprint. “Lee County Sheriff’s Office is a leader in its use

of new technologies to help perform more efficiently, and we are happy to

help extend its reach with both Sprint Mobile Extension and the Sprint

Mobile Broadband network.”

About Sprint Nextel

Sprint Nextel offers a comprehensive range of wireless and wireline

communications services bringing the freedom of mobility to consumers,

businesses and government users. Sprint Nextel is widely recognized for

developing, engineering and deploying innovative technologies, including

two robust wireless networks serving approximately 54 million customers at

the end of 2007; industry-leading mobile data services; instant national

and international push-to-talk capabilities; and a global Tier 1 Internet

backbone. For more information, visit www.sprint.com.

About Ascendent Systems

Ascendent Systems, a subsidiary of Research In Motion (NASDAQ: RIMM) (TSX: RIM), is the premier provider of enterprise voice mobility solutions that

allow companies to be more responsive to customers and crisis by giving

them the power to reach anyone, anywhere, immediately. The Ascendent Voice

Mobility Suite of applications provides single number reachability,

real-time notification and conferencing, and voice continuity. These

solutions allow users to automatically extend the identity and

functionality of their business desk phone to any other device. Partnered

with major mobile carrier and infrastructure providers, Ascendent has

solutions deployed in Fortune 500 corporations across many industry

verticals including manufacturing, finance, healthcare, government,

hospitality, and education. For more information:

http://www.ascendentsystems.com.

Forward-looking statements in this news release are made pursuant to the

“safe harbor” provisions of the United States Private Securities Litigation

Reform Act of 1995. When used herein, words such as “intend” and similar

expressions are intended to identify forward-looking statements.

Forward-looking statements are based on assumptions made by and information

available to Research In Motion Limited. Investors are cautioned that such

forward-looking statements involve risks and uncertainties. Important

factors that could cause actual results to differ materially from those

expressed or implied by such forward-looking statements include, without

limitation, possible product defects and product liability, risks related

to international sales and potential foreign currency exchange

fluctuations, the initiation or outcome of litigation, acts or potential

acts of terrorism, international conflicts, significant fluctuations of

quarterly operating results, changes in Canadian and foreign laws and

regulations, continued acceptance of RIM’s products, increased levels of

competition, technological changes and the successful development of new

products, dependence on third-party networks to provide services,

dependence on intellectual property rights and other risks and factors

detailed from time to time in RIM’s periodic reports filed with the United

States Securities and Exchange Commission, and other regulatory

authorities. RIM has no intention or obligation to update or revise any

forward-looking statements, whether as a result of new information, future

events or otherwise.

Ascendent is a registered trademark of Ascendent Systems. The BlackBerry

and RIM families of related marks, images and symbols are the exclusive

properties and trademarks of Research In Motion Limited. RIM, Research In

Motion and BlackBerry are registered with the U.S. Patent and Trademark

Office and may be pending or registered in other countries. Wi-Fi is a

registered trademark of the Wi-Fi Alliance. All other brands, product

names, company names, trademarks and service marks are the properties of

their respective owners. RIM and Ascendant assume no obligations or

liability and make no representation, warranty, endorsement or guarantee in

relation to any aspect of any third party products or services.

Megan Lane SHIFT Communications 617.779.1854 [email protected] Heather Howland Ascendent Systems 800.358.5075 [email protected] Sukhi Sahni Sprint 703-592-7779 [email protected]