Media Advisory: Micromuse to Present Two Sessions at the Internet Telephony Conference and Expo

Micromuse Inc. (Nasdaq: MUSE), the leading provider of
ultra-scalable, realtime business and service assurance software,
today announced that Scott Sobers, Micromuse's Director of Service
Provider Solutions Marketing, will deliver two presentations at the
Internet Telephony Conference and Expo. The conference will be held
January 24-27, 2006 at the Fort Lauderdale-Broward County Convention
Center in Fort Lauderdale, Florida.
   Sobers' first presentation, "QoS and Network Monitoring for
Successful Large-Scale VoIP," will take place Tuesday, January 24,
2006 at 3:00 P.M. EST. This session will explore the challenges of
managing IP telephony and converged voice and data infrastructures,
the trends surrounding managed VoIP, and what many services providers
are doing to support their enterprise customers.
   The second presentation, "Quality of Service State of the Market,"
will take place Thursday, January 26, 2006 at 2:30 P.M. EST. This
session will examine the factors that affect VoIP QoS, such as latency
of VoIP, bandwidth, network reliability, and jitter.

   Held since 1999, the Internet Telephony Conference and Expo is one
of the world's largest and best-attended VoIP trade shows. Last
October, TMC's Internet Telephony Conference & Expo in Los Angeles
attracted more than 7,000 buyers and sellers of IP Telephony products
and services. For this upcoming January show, TMC projects total
attendance to exceed 8,500. For more information about the event,
please go to: http://www.tmcnet.com/voip/conference/.

   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 650 Townsend Street, San Francisco, Calif. 94103; (415)
568-9800. 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.