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HOUSTON and PITTSBURGH, April 16 /PRNewswire-FirstCall/ -- Modeo(R), the mobile broadcast affiliate of Crown Castle International Corp. (NYSE: CCI), and Penthera Technologies, Inc. announced today that they have entered into an Engineering Services Agreement to enhance Modeo's Mobile TV service capabilities. This agreement complements the Mobile Broadcast Platform(TM) Version 2.0 Agreement recently signed and announced at the March 2007 CTIA event. The development of these service enhancements follows the success of Modeo's launch of its live commercial quality mobile beta service in New York City in December 2006.

Included in this agreement are components of the Mobile Broadcast Platform Version 2.0 (Penthera MBP 2.0), including upgrades to Modeo's broadcast head end, development of the Mediacast Server and improvements to the Modeo Smartphone user interface software. Modeo expects the implementation of these software enhancements to result in a rich suite of features and functionality aimed at improving the consumer experience. The service enhancements provide Modeo with the ability to offer mobile Digital Video Recording (DVR) functionality that enables users to both record and store their favorite programs on their mobile TV devices on a scheduled basis, as well as "impulse" recording while viewing live. Users will be able to pause, rewind and fast forward both live and stored content. Also featured as an enhancement is the ability to "mediacast" content, the term used to describe the broadcasting of individual content segments like movies, songs and prime time episodes that are then stored on the consumer's device. This mediacast content can be tailored to the individual preferences of each user, resulting in an expanded and personalized virtual channel lineup. The broadcast head end improvements are expected to also provide Modeo with the ability to insert advertisements into both live and mediacast programming.

In addition to the enhanced functionality, the planned service enhancements are expected to include the ability to improve picture quality and clarity, as well as reduce channel change time.

Modeo and Penthera will demonstrate selected enhanced mobile TV features during a news conference hosted by Modeo on Tuesday, April 17, from 3:00 to 3:45 p.m. Pacific Daylight Time in Room N242 of the Las Vegas Convention Center. The news conference is open to media representatives and wireless and mobile TV industry analysts with NAB credentials. Modeo and Penthera also will host a series of private demonstrations this week. Those interested in a private demonstration should contact David Ramirez (Ramirez@modeo.com; mobile 210/421-9530) at Modeo or bizdev@penthera.com at Penthera.

"The recently compiled feedback from Modeo's commercial quality beta service in New York has affirmed users' preference and appetite for live, high quality mobile TV. In addition, users expressed a desire to augment the live experience with broad and personalized programming selections," commented Michael Ramke, president of Modeo. "We believe the service enhancements enabled by the Penthera 2.0 broadcast solution will help position Modeo to effectively deliver on the broad opportunity of mobile TV."

"Modeo is a mobile TV pioneer. Modeo has rolled out its first commercial quality live mobile TV beta service in New York City which incorporates Penthera's technology," said Sam Leinhardt, CEO of Penthera Technologies, a leading provider of mobile broadcast and multimedia software to operators worldwide. "Modeo and Penthera are working together to raise the bar to deliver the next generation of personalized, interactive mobile TV services for consumers, enabling features like push video on demand, DVR and click-to- vote capabilities."

More About Penthera Mobile Broadcast Platform 2.0

Penthera MBP 2.0 offers mobile operators a way to better utilize excess network resources by reliably tricklecasting - or broadcasting over time - files stored in their subscriber's mobile devices, which alleviates failed file delivery due to dropped or interrupted signals and the additional burden that issue puts on a network that's required to resend the same file multiple times.

Penthera MBP 2.0 enables error-free broadcast delivery of any media file to a broadcast-enabled handset. Mediacast currently supports the broadcast of video clips, full-length TV shows, podcasts, and MP3s. Receiver devices supported include mobile phones, Personal Digital Assistants (PDAs), laptops and portable media players. With the Mediacast system enabled on their portable devices, consumers can access and play back virtually any type of media content whenever and wherever they want to.

About Modeo

Modeo is a 98 percent owned and controlled mobile broadcast affiliate of Crown Castle International Corp. Modeo has the ability to deliver a rich media service comprised of live TV channels, audio channels and podcasting content over its Digital Video Broadcast-Handheld (DVB-H) network to a variety of mobile devices via its nationwide spectrum holdings. For more information on Modeo, please visit http://www.modeo.com.

About Crown Castle International Corp.

Crown Castle International Corp. engineers, deploys, owns and operates technologically advanced shared wireless infrastructure, including extensive networks of towers. Crown Castle offers significant wireless communications coverage to 91 of the top 100 US markets and to substantially all of the Australian population. Crown Castle owns, operates and manages over 22,000 and over 1,300 wireless communication sites in the US and Australia, respectively. For more information on Crown Castle, please visit http://www.crowncastle.com.

About Penthera

Penthera is a privately held company providing a complete software solution for mobile broadcast services. Penthera's solution set includes a carrier-class, broadcast head-end services platform, along with middleware and application-level software for handheld devices. Founded in 2005, Penthera is based in Pittsburgh, Pennsylvania, USA. For more information, visit the company web site at http://www.penthera.com.

Penthera, Penthera Broadcast Center, and Mobile Broadcast Foundation are trademarks of Penthera Technologies.

Modeo is a registered trademark.

Cautionary Language Regarding Forward-Looking Statements

This press release contains forward-looking statements that are based on the current expectations of the management of Modeo and Crown Castle. Such statements include, but are not limited to, plans, projections and estimates relating to the impact and effect of Modeo's Engineering Services Agreement with Penthera, including functionality improvements, features to be offered, and quality of the user experience. Such forward-looking statements are subject to certain risks, uncertainties and assumptions, including that Modeo's business model and the mobile media market are unproven and may produce results that are significantly less than anticipated. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those expected. More information about potential risk factors which could affect

Modeo's results is included in Crown Castle's filings with the Securities and Exchange Commission.

    Modeo Media and Industry Analyst Contacts:
    Laura Pennino, 281/286 9398 or 713/419 1776, lp@penninoandpartners.com
    Blake Lewis, 214/269 2093 or 972/754 9966, blake@penninoandpartners.com

    Modeo Investor Relations Contact:
    Jay Brown, 713/570 3076, jay.brown@crowncastle.com

    Penthera Media Contacts:
    Erin Collopy, 408/975 3041, ecollopy@hoffman.com
    Carlos Mangandy, 408/975 3004, cmangandy@hoffman.com

SOURCE  Crown Castle International Corp.
    -0-                             04/16/2007
    /CONTACT:  Modeo Media and Industry Analyst Contacts: Laura Pennino,
+1-281-286-9398, +1-713-419-1776, lp@penninoandpartners.com, or Blake Lewis,
+1-214-269-2093, +1-972-754-9966, blake@penninoandpartners.com; Modeo Investor
Relations: Jay Brown, +1-713-570-3076, jay.brown@crowncastle.com, all of
Modeo; Erin Collopy, +1-408-975-3041, ecollopy@hoffman.com, or Carlos
Mangandy, +1-408-975-3004, cmangandy@hoffman.com, both of Penthera
Technologies, Inc./
    /Web site:  http://www.crowncastle.com
                http://www.penthera.com
                http://www.modeo.com /
    (CCI)

CO:  Crown Castle International Corp.; Penthera Technologies, Inc.; Modeo
ST:  Texas, Pennsylvania
IN:  CPR TLS ENT TVN CSE
SU:  JVN

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