ShoreTel Ranked Among Silicon Valley's Top 150 Public Companies

SUNNYVALE, Calif., April 18 /PRNewswire-FirstCall/ -- ShoreTel(R), Inc.
(Nasdaq: SHOR), a leading provider of Pure IP Unified Communications
solutions, announced today that the San Jose Mercury News has included
ShoreTel in the 2007 Silicon Valley 150, ranking the company number 148
with $117.5 million in reported revenue for CY 2007. ShoreTel earned even
higher marks for other report metrics, including 126th in market
capitalization at $219.8 million, 95th in profit at $8.3 million and 70th
in profit margin at 7 percent.

The San Jose Mercury News, recognized as the newspaper of record for
the Northern California technology business region, conducts the annual
Silicon Valley 150, ranking public companies headquartered in Santa Clara,
Santa Cruz, southern San Mateo and southern Alameda Counties. Companies are
evaluated on the basis of worldwide revenues for the most recent available
four quarters. Market capitalization -- the number of shares outstanding
multiplied by the price of a single share -- is as of March 31, the last
trading day of the first quarter of 2008.

Throughout 2007, ShoreTel maintained a steady stream of partner,
product and customer announcements.

The company celebrated winning numerous prestigious awards, including
Inc. magazine 5000 award, Deloitte Technology Fast 500 in North America and
Fast 50 in the San Francisco Bay Area, and Silicon Valley/San Jose Business
Journal Fast 50.

The Silicon Valley 150 was published in the April 13, 2008 edition of
the San Jose Mercury News.