REG-Comstar UTS Comstar to Fully Launch Wimax Services

MOSCOW--(Business Wire)--

"COMSTAR - United TeleSystems" JSC ("Comstar" or "the Group") (LSE: CMST), the
largest integrated telecommunications provider in Moscow and 69 Russian cities,
today announced that the test phase of its mobile WiMAX network project has been
completed, and the network will be fully launched from May 1, 2009.

The discounted tariff plan for internet access with the data transmission volume
of 2 Gigabits will be offered for WiMAX test participants for a subscription fee
of RUR 200.00 (US$ 6.01) per month. The charge for the data transmission volume
which exceeds a prepaid level will be RUR 1.00 (US$ 0.03) per additional
Megabite. New subscribers will be offered WiMAX services and equipment from the
middle of May 2009.

Sergey Pridantsev, President and Chief Executive Officer of Comstar UTS,
commented: "We are ready to fully launch mobile WiMAX services for our
subscribers in Moscow in May this year. The new services will be offered within
the frame of the unified telecommunications space created by Comstar. We are
very grateful to all our subscribers who have participated in the test phase of
the project which was launched on January 15, 2009. Their feedback and
recommendations assist us in creating the network which will enable us to
provide highly efficient services."

For further information, please visit www.comstar-uts.com or contact:

Comstar UTS Shared Value Limited

Masha Eliseeva Matthew Hooper

Tel: +7 985 997 0852 Tel. +44 (0) 20 7321 5010

ir@comstar-uts.ru comstar@sharedvalue.net

Comstar UTS is the leading fixed-line telecommunications company in Moscow.
Comstar provides voice, data, television and other value-added services to
residential and corporate subscribers and operators, using its extensive
backbone network and exclusive last mile access to 97% of Moscow households. The
Company also offers communications services in five Russian regions, Armenia and
Ukraine. Comstar had 3.6 million residential subscribers and 784 thousand
residential broadband internet subscribers in Moscow, as well as 73 thousand
residential regional and international broadband internet subscribers at the end
of December 2008. Comstar generated US$ 1,647.7 million of revenues and a 41.4%
adjusted OIBDA margin for the twelve months ended December 31, 2008. Comstar`s
Global Depositary Receipts are listed on the London Stock Exchange (LSE:CMST).

Some of the information in this press release may contain projections or other
forward-looking statements regarding future events or the future financial
performance of Comstar UTS. You can identify forward looking statements by terms
such as "expect," "believe," "anticipate," "estimate," "intend," "will,"
"could," "may" or "might", the negative of such terms or other similar
expressions. Comstar UTS wishes to caution that these statements are only
predictions, and that actual events or results may differ materially. Comstar
UTS does not intend to update these statements to reflect events and
circumstances occurring after the date hereof or to reflect the occurrence of
unanticipated events. Many factors could cause the actual results to differ
materially from those contained in projections or forward-looking statements of
Comstar UTS, including, among others, general economic conditions, the
competitive environment, risks associated with operating in Russia, rapid
technological and market change in the industries Comstar UTS operates in, as
well as many other risks specifically related to Comstar UTS and its operations.

1 Based on the Russian Central Bank exchange rate as at April 29, 2009.

Comstar UTS

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