DISCLOSURE UNDER CHAPTER 2, SECTION 10 OF THE FINNISH SECURITIES MARKETS ACT

TELESTE CORPORATION STOCK EXCHANGE RELEASE 29.1.2009 AT 16:30

DISCLOSURE UNDER CHAPTER 2, SECTION 10 OF THE FINNISH SECURITIES MARKETS ACT

Teleste Corporation has received the attached notification from EM Group Oy
referring to Chapter 2, Section 9 of the Finnish Securities Markets Act on a
change in holdings.

TELESTE CORPORATION

Jukka Rinnevaara
CEO

ATTACHMENT:
EM Group Oy's notification

NOTIFICATION REFERED TO THE FINNISH SECURITIES MARKETS ACT ON A CHANGE OF
HOLDINGS

The holdings of EM Group Oy have exceeded ten percent of the share capital and
voting rights in Teleste Corporation. We hereby notify the Financial Supervisory
Authority and Teleste Corporation of the following:

1. Name of the company in which holdings have been acquired:
Teleste Corporation
2. Reason for this notification: Share purchases made on 29th January 2009
3. Date of change in holdings: 29th January 2009
4. Exact proportion of share capital and voting rights in Teleste Corporation:
Holdings by EM Group Oy are now as follows:
Number of shares 1 882 000
Proportion of share capital and voting rights 10.57 %.
5. Shareholders complete name and business identity code: EM Group Oy, business
identity code 0854884-7

Teleste in brief:
Teleste is an international technology group founded in 1954, which is
specialized in broadband data communication systems and solutions. The group is
divided into two Strategic Business Units: Broadband Cable Networks and Video
Networks. Broadband Cable Networks serves cable operators and a major part of
its business activities are handled through direct customer contact. Video
Networks supplies solutions for optical signal transmission and video network
management software solutions for video surveillance and a major part of its
business is handled through system integrators. Both Business Units are among
the leading providers in their market areas and are globally recognized for
their know-how and ability to produce technically cutting edge solutions year
after year. In 2007 the group's net sales totalled EUR 125.1 million and the
group employed 672 persons at the year-end. The company has approximately 30
offices world-wide and over 90% of Teleste's net sales are generated outside
Finland. The company is listed on the NASDAQ OMX Helsinki Ltd.
Visit www.teleste.com for more information.

DISTRIBUTION:
NASDAQ OMX Helsinki
Media
www.teleste.com