EXHIBIT 1
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AGREEMENT
Pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934,
the undersigned hereby agree that only one statement containing the information
required by Schedule 13G need be filed with respect to the ownership by each of
the undersigned of shares of Common Stock of MCK Communications, Inc.
This agreement may be executed in any number of counterparts, each of
which shall be deemed an original.
EXECUTED this 11 day of February, 2000.
SUMMIT VENTURES IV, L.P. SUMMIT INVESTORS II, L.P.
By: Summit Partners IV, L.P. By: *
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General Partner
By: Stamps, Xxxxxxx & Co. IV
SUMMIT PARTNERS IV, L.P.
By: *
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X. Xxx Stamps, IV By: Stamps, Xxxxxxx & Co. IV
General Partner
By: *
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X. Xxx Stamps, IV
General Partner
SUMMIT SUBORDINATED DEBT FUND, L.P.
SUMMIT PARTNERS SD, L.P.
By: Summit Partners SD, L.P.
By: Stamps, Xxxxxxx & Co. III
By: Stamps, Xxxxxxx & Co. III
By: *
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By: * X. Xxx Stamps, IV
----------------------- General Partner
X. Xxx Stamps, IV
General Partner
STAMPS, XXXXXXX & CO. IV STAMPS, XXXXXXX & CO. III
By: * By: *
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X. Xxx Stamps, IV X. Xxx Stamps, IV
General Partner General Partner
Page 26 of 39 Pages
* *
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X. Xxx Stamps, IV Xxxxxx X. Xxxxxxx
* *
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Xxxxxxx X. Xxxxxxx Xxxxxx X. Xxxxxxx
* *
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Xxxxxxx X. Xxxx Xxxxx X. Xxxxx
*
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Xxxxxx X. Xxxxxxxxx
*
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Xxxxxx X. Xxxxxxx
*
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Xxxxx X. Xxxxx
*
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Xxxxx X. Xxxxx
*By: /s/ Xxxxxx X. Xxxx
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Xxxxxx X. Xxxx
Attorney-in-fact
* Pursuant to Powers of Attorney on file with the Commission, which Powers of
Attorney are incorporated herein by reference. Copies of such Powers of Attorney
are attached hereto as Exhibit 2.
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Page 27 of 39 Pages