Huawei Technologies and Micromuse Deliver Seamless Interoperability of Network Solutions.

SAN FRANCISCO -- Cooperative Relationship Enriches Management of Data Communications  Network, Fixed Network, and Optical Transmission Network for Service Providers Worldwide

Micromuse Inc. (Nasdaq: MUSE), the leading provider of ultra-scalable, realtime business and service assurance software and Huawei Technologies Co., Ltd. ("Huawei Technologies"), one of the world's leading networking and telecommunications equipment suppliers, today announced that Huawei Technologies has joined the Micromuse Alliance Program(TM) and will immediately provide pre-integration between its data communications equipment, fixed network equipment, optical transmission equipment, and network element management systems and Micromuse's Netcool(R) solutions.

Mr. Liu Bo, Vice President of Huawei Technologies' Network Product Line, said, "The combination of Huawei Technologies' advanced technology with Micromuse's Netcool platform provides organizations with customized solutions with excellent service. We are delighted to be working with Micromuse to offer our joint customers pre-integrated solutions that will allow them to manage their telecommunications services more efficiently and enrich communications for end users."

As a member of the Micromuse Alliance Program, Huawei Technologies will deliver pre-integration for its network equipment and network element management system devices, enabling seamless interoperability with any Netcool-managed network for realtime, end-to-end fault and performance management. The combination will enable network operators to deploy new services, technologies, and equipment quickly to maximize investments. Together, Huawei Technologies and Micromuse provide value to wireline operators who want to leverage their investment in existing IT infrastructure and who are seeking a complete solution for the end-to-end management of their network infrastructure to support new services.

"We are excited to be working in combination with Huawei Technologies to deliver innovative and customized network solutions for service providers via Netcool solutions for event management and service assurance," said John Sien, Vice President of OEMs and Alliances at Micromuse. "Huawei Technologies' impressive customer list includes 300 telecommunications carriers worldwide, including 22 of the world's top 50 operators . Micromuse and Huawei Technologies are working together on several joint opportunities throughout Europe, Asia and Latin America. Moving forward, the relationship between Micromuse and Huawei Technologies will enable us to create business opportunities and leverage both companies' best-in-class technologies to win new business."

Through Micromuse's Alliance Program, Huawei Technologies and Micromuse will cooperatively pursue business, technical and marketing opportunities. The goals of the program are to provide flexibility, choice, and quick time-to-market for our customers through the development of integrated, viable solutions. Since its launch in 2000, the Micromuse Alliance Program has welcomed over 100 software and hardware vendors who offer best-of-breed solutions that are complementary to Netcool solutions.

About Netcool

Micromuse's Netcool(R) software solutions provide businesses with the assurance that their applications and services are up and operating. By allowing our customers to see what's happening throughout the infrastructure in realtime, Netcool applications enable them to respond to problems before revenue-supporting services are affected.

Netcool applications install out-of-the-box, deploy rapidly and scale to the largest environments. Micromuse's flagship, Netcool/OMNIbus(TM) application, includes a library of off-the-shelf software modules that allow our customers to collect and consolidate information from more than 1,000 environments spanning applications, systems, voice and IP, cable/broadband, switches and routers, and enterprise management systems.

About Huawei Technologies Co., Ltd.

Huawei Technologies Co., Ltd. ("Huawei Technologies") is one of the world's leading networking and telecommunications equipment suppliers, delivering long-term value and potential growth to customers. The company is dedicated to providing innovative and customized equipment, services and solutions to meet the different needs and requirements of customers worldwide.

Huawei Technologies' product portfolio comprises wireless products (e.g. UMTS, CDMA2000, GSM/ GPRS/ EDGE and WiMAX); network products (e.g. NGN, xDSL, optical network and data communications products); value-added services (e.g. intelligent network, CDN/ SAN and wireless data) as well as mobile and fixed terminals.

Established in 1988, Huawei Technologies is headquartered in Shenzhen, China. The company serves over 300 telecommunications operators including 22 of the world's top 50 operators. Huawei Technologies' products and solutions have been deployed in more than 90 countries worldwide. Its contracted sales in 2004 amounted to USD 5.58 billion. As of June 2005, Huawei Technologies has around 30,000 employees worldwide. For more information, please visit Huawei Technologies' website at http://www.huawei.com.

About Micromuse

Micromuse Inc. (Nasdaq: MUSE) is the leading provider of ultra-scalable, realtime business and service assurance software solutions. The Netcool(R) software suite provides organizations with the assurance that their IT systems are supporting and driving profits 24 hours a day. Unlike traditional infrastructure management systems, Netcool solutions provide realtime end-to-end visibility and accurate troubleshooting from a business perspective. Such business intelligence allows organizations to respond to problems quickly, streamline workflow processes and improve business uptime. Micromuse customers include BT, Cable & Wireless, Deutsche Telekom, EarthLink, ITC DeltaCom, JPMorgan Chase, MCI, T-Mobile, and Verizon. Headquarters are located at 139 Townsend Street, San Francisco, Calif. 94107; [phone]. The Web site is at www.micromuse.com.

Micromuse and Netcool are registered trademarks of Micromuse Ltd. All other trademarks and registered trademarks in this document are the properties of their respective owners. Any statements contained in this press release that do not describe historical facts may constitute forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Any forward-looking statements contained herein are based on current expectations, but are subject to a number of risks and uncertainties.

The factors that could cause actual future results to differ materially from the forward-looking statements include the following: fluctuations in customer demand, the Company's ability to manage its growth (including the ability to hire sufficient sales and technical personnel), the risks associated with the expansion of the Company's distribution channels, the risk of new product introductions and customer acceptance of new products; the rapid technological change which characterizes the Company's markets, the risks associated with competition, the risks associated with international sales as the Company expands its markets, and the ability of the Company to compete successfully in the future, as well as other risks identified in the Company's Securities and Exchange Commission Filings, including but not limited to those appearing under the caption "Risk Factors" in the Company's most recent Quarterly Reports on Form 10-Q and on Form 10-K on file with the Securities and Exchange Commission and available on the Company's Web site.