Aicent Updates

Operators Demonstrate First Ever International WiMAX™ Roaming at WiMAX Forum® Member Conference in Taiwan

TAIPEI, Taiwan -- (BUSINESS WIRE) -- Clearwire International LLC, an operating subsidiary of Clearwire Corporation, Tatung InfoComm and VMAX today publicly demonstrated the first Mobile WiMAX™ global roaming at the WiMAX Forum Member Conference in Taipei this week. The conference also highlighted the strength of the WiMAX ecosystem in Taipei, including the anticipated commercial rollout of six WiMAX networks in Taiwan by Q1 2010.

The WiMAX Forum Taiwan Office, with participating WiMAX ecosystem partners Samsung, Futureinfonet, Alcatel-Lucent, and Bridgewater Systems, hosted live roaming demonstrations in Taipei. The demonstrations featured a roaming WiMAX user with commercially available Mobile WiMAX devices to show how visitors may access a local WiMAX network in Taiwan. Tatung InfoComm and VMAX demonstrated two-way roaming which is critical in Taiwan for services between the northern and southern licensees. Roaming from Clearwire International to VMAX and Tatung InfoComm was also featured as international roaming is a key feature of WiMAX as a global technology. This pioneering end-to-end WiMAX roaming demonstration illustrates the interoperability of WiMAX equipment and the availability and readiness of international roaming on WiMAX networks.

“Global roaming is a critical factor for the success of WiMAX as a leading global broadband wireless technology,” said Ron Resnick, president and chairman of the WiMAX Forum. “Roaming is important to operators today, as there are more than 500 WiMAX deployments in more than 145 countries and the momentum of WiMAX deployments continues with double digit deployment adds each month.”

WiMAX Roaming Exchanges (WRX) enable roaming between WiMAX operators allowing quicker implementation of roaming services, faster time to market for new operators and lower capital expenditures. In the case of Taiwan, the WiMAX Forum Taiwan Office initiated roaming trials while working closely with Aicent, a participating WRX, to coordinate and enable WiMAX roaming trials among universities, research institutes and several WiMAX operators globally. To date, the global roaming trials team has accomplished successful roaming trials domestically within Taiwan and internationally from the United States to Taiwan.

Taiwan grows its substantial WiMAX ecosystem

According to The Industrial Economics and Knowledge Center (IEK) of the Industrial Technology Research Institute (ITRI), Taiwanese WiMAX CPE shipments will reach up to 2.72 million units by the end of 2009, a 196% increase over the previous year with value of the output reaching NT$8 Billion. The organization also estimates that the demand for WiMAX products will increase Taiwanese WiMAX CPE shipments to six million units and NT$23 Billion in 2010.

Taiwan has been a strong supporter of WiMAX since the technology’s formative years. The first WiMAX Forum Applications Lab, M-Taiwan Applications Lab (MTWAL) was established in 2007 in collaboration with VMAX and continues to lead the industry in groundbreaking uses for mobile broadband technologies. MTWAL taps local universities’ innovation by providing a platform for students and professors to develop applications for high speed, mobile networks.

MTWAL will hold their annual open house in Hsinchu on October 27, 2009. This year, it will turn the MTWAL environment into a small theme park, providing an opportunity for visitors to experience the applications on MTWAL’s WiMAX network. The applications include:

· Air Pollution Based Navigation - a WiMAX capable MID that plots a route through the city based on the freshest air
· BuyFast - a remote ordering and a drive-through system enabled by WiMAX plus LBS system that will allow pre-ordering from rest prior to arrival
· Fire Scene Commanding System - with support of wireless-enabled equipment, you will earn vigorous applause for rescuing victims from disaster sites and successfully completing missions
· Pocket Channel - with support of mobile network, you could provide live shows and share real-time programs on your own channel

For more information on MTWAL’s open house, please contact mtwal@wimaxforum.org. To learn more about WiMAX global roaming programs, visit www.wimaxroaming.org.

About the WiMAX Forum®

The WiMAX Forum® is an industry-led, not-for-profit organization that certifies and promotes the compatibility and interoperability of broadband wireless products based upon the IEEE 802.16. A WiMAX Forum goal is to accelerate the introduction of these systems into the marketplace. WiMAX Forum Certified products are interoperable and support broadband fixed, nomadic, portable and mobile services.

Along these lines, the WiMAX Forum works closely with service providers and regulators to ensure that WiMAX Forum Certified systems meet customer and government requirements. Through the WiMAX Forum Congress Events Series of global trade shows and events, the WiMAX Forum is committed to furthering education, training and collaboration to expand the reach of the WiMAX ecosystem. For more information, visit the trade show link at www.wimaxforum.org.

"WiMAX Forum," the WiMAX Forum logo and the WiMAX Forum Certified logo are registered trademarks of the WiMAX Forum. "WiMAX," "Mobile WiMAX," "Fixed WiMAX," "WiMAX Certified," and "WiMAX Forum Certified" are trademarks of the WiMAX Forum. Third-party trademarks contained in this document are the property of their respective owners.

Aicent WiMAX Roaming Trial

Aicent WiMAX Roaming Overview

The Aicent WiMAX Roaming eXchange service (WRX) is a cost-efficient solution that enables the WiMAX operator to offer worldwide WiMAX data roaming. As one of the world’s leading global roaming service providers, Aicent offers a total solution to this data roaming and IP traffic challenge with a high-performance, secured private IP network infrastructure and a variety of application level support. The Aicent WRX network acts as a central hub to connect our operator customers’ WiMAX networks with the networks of other WiMAX operator roaming partners, which enables seamless roaming experience for the mobile subscribers.

Aicent WiMAX Roaming eXchange Service Features

Flexible operator connections to meet individual customer requirements
Geographically redundant and diverse proxy RADIUS AAA data roaming signaling relay
Flexible and comprehensive data clearing capability supporting variety of billing and report requirement

Per session rounding support
Zone based billing support and report
BSID based billing support and report

Real-time monitoring tools and monthly traffic reports
QoS management supporting both 2.5G and 4G applications and roaming bearer traffic
Bandwidth-on-demand for optimized cost efficiency
Guaranteed security and service backed by a SLA
Unmatched customer focus - an Aicent hallmark - with superb 24x7 support
Top-notch technical staff

First-ever international roaming between WiMAX networks

Using Aicent’s WiMAX Roaming eXchange (WRX), executives from Clearwire successfully used a USB WiMAX dongle together with a username and password combination and embedded credentials from their company’s 4G WiMAX service to gain access to the Tatung InfoComm WiMAX network and VMAX WiMAX network in Taiwan. This successful connection marks the first time international roaming between WiMAX networks has been achieved.

Key players in the roaming trial

Aicent, a leading provider of data network services and solutions for global mobile operators. To enable interoperability between Aicent customers and other networks, Aicent operates one of the world’s largest GPRS and 3G network exchanges, connecting to over 70 operators, including four of the world’s five largest. Through extensive peering arrangements, the Aicent network reaches nearly all GPRS/3G operators around the world.

Clearwire, a wireless internet company, mostly owned by Sprint Nextel, The company has been serving broadband in the US and Europe since 2003, and is the biggest proponent of WiMAX in the US. Over the last year, Clearwire has created a number of WiMAX networks in cities across the States. While the overall population served by Clearwire WiMAX is still relatively small, it is still the largest 4G wireless provider in America.

Tatung InfoComm, the first commercially-launched operator in Taiwan, beginning service in April this year in Penghu Island, then quickly expanding to Kaohsiung three months later in July. Tatung InfoComm is committed to staying ahead of the market as a versatile and leading mobile broadband operator offering convergence of multimedia, telecommunication and digital broadcasting.

VMAX Telecom, awarded a WiMAX operator permit by the National Communications Commission of Taiwan on July 26, 2007, is composed of and supported by an influential lineup of shareholders, including Tecom, Vibo Telecom, Intel Capital and Teco Electric & Machinery, to form a technically strong and financially solid team for providing WiMAX service in North Taiwan. VMAX Telecom is striving to be the leading WiMAX service provider in Taiwan by providing customers with anywhere, anytime high speed Internet Access, IPTV, VoIP, Online Games, and LBS (Location Based Service), as well as a variety of innovative value added services and applications.

About WiMAX Roaming Trial Configuration

The Roaming Trial featured a roaming WiMAX user with commercially available Mobile WiMAX devices to show how visitors may access a local WiMAX network in Taiwan. Roaming from Clearwire International to VMAX and Tatung InfoComm was also featured as international roaming is a key feature of WiMAX as a global technology. This pioneering end-to-end WiMAX roaming trial illustrates the interoperability of WiMAX equipment and the availability and readiness of international roaming on WiMAX networks. WiMAX has emerged as a key technology to support true 4G connectivity for both fixed wireless and mobile. Available spectrum in countries has been allocated to WiMAX and literally hundreds of new wireless operators are delivering services alongside traditional wireless operators. Today there are a growing number of devices supporting multiple radios for multimode WiMAX, WiMAX+Wi-Fi, WiMAX+EVDO and WiMAX+HSPA in the market. Aicent is already working with many CDMA, GSM, Wi-Fi and WiMAX operators to bring global and inter-standard roaming into commercial reality.