ShoreTel Ranked 327th Fastest Growing Company in North America on Deloitte's 2010 Technology Fast 500(TM)

Attributes Its 280 Percent Revenue Growth to Its Brilliantly Simple Approach to Feature-Rich Unified Communications and Its Commitment to World-Class Customer Satisfaction

| Source: ShoreTel ShoreTel

SUNNYVALE, CA--(Marketwire - October 25, 2010) -  ShoreTel® (NASDAQ: SHOR) today announced that it ranked number 327 on Technology Fast 500™, Deloitte's ranking of 500 of the fastest growing technology, media, telecommunications, life sciences and clean technology companies in North America. Rankings are based on percentage of fiscal year revenue growth during the period from 2005 - 2009. ShoreTel grew 280 percent during this period.

ShoreTel's chief executive officer, Don Girskis, credits the company's ability to respond to businesses' demands for easy-to-manage and use unified communications solutions, and its obsessive focus on customer satisfaction, with the company's 280 percent revenue growth. He said, "This accolade from Deloitte, together with recent recognition from Synergy Research Group and Nemertes Research, further validates that ShoreTel continues to grow and capture market share by delivering to enterprises brilliantly simple unified communications solutions and unparalleled customer service. Our commitment to eliminating complexity and delivering the lowest total cost of ownership is clearly resonating throughout the industry."

Overall, Technology Fast 500™ award winners for 2010 had revenue growth ranging from 146 percent to 164,079 percent from 2005 to 2009, with an average growth of 2,361 percent.

Selection and Qualifying Criteria
Technology Fast 500 provides a ranking of the fastest growing technology, media, telecommunications, life sciences and clean technology companies -- both public and private -- in North America. Technology Fast 500 award winners are selected based on percentage fiscal year revenue growth from 2005 to 2009.

In order to be eligible for Technology Fast 500 recognition, companies must own proprietary intellectual property or technology that is sold to customers in products that contribute to a majority of the company's operating revenues. Companies must have base-year operating revenues of at least $50,000 USD or CD, and current-year operating revenues of at least $5 million USD or CD. Additionally, companies must be in business for a minimum of five years, and be headquartered within North America.

This ranking is compiled from nominations submitted directly to the Technology Fast 500 Web site, and public company database research.

About ShoreTel, Inc.
ShoreTel, Inc. (NASDAQ: SHOR) is the provider of brilliantly simple Unified Communication (UC) solutions based on its award-winning IP business phone system. We offer organizations of all sizes integrated, voice, video, data, and mobile communications on an open, distributed IP architecture that helps significantly reduce the complexity and costs typically associated with other solutions. The feature-rich ShoreTel UC system offers the lowest total cost of ownership (TCO) and the highest customer satisfaction in the industry, in part because it is easy to deploy, manage, scale and use. Increasingly, companies around the world are finding a competitive edge by replacing business-as-usual with new thinking, and choosing ShoreTel to handle their integrated business communication. ShoreTel is based in Sunnyvale, California, and has regional offices in Austin, Texas, United Kingdom, Sydney, Australia and Munich, Germany. For more information, visit www.shoretel.com.

For detailed information on ShoreTel products and features, click here.

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Contact Information:

Press Contact:

Eastwick Communications for ShoreTel
Suzanne Chan
Tel: 650-480-4018
suzanne@eastwick.com