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SCHEDULE 13G
Amendment No. 5
Sonus Networks Incorporated
Common Stock
Cusip #835916107
Cusip #835916107
Item 1: Reporting Person - FMR LLC
Item 4: Delaware
Item 5: 0
Item 6: 0
Item 7: 40,253,580
Item 8: 0
Item 9: 40,253,580
Item 11: 15.000%
Item 12: HC
Cusip #835916107
Item 1: Reporting Person - Edward C. Johnson 3d
Item 4: United States of America
Item 5: 0
Item 6: 0
Item 7: 40,253,580
Item 8: 0
Item 9: 40,253,580
Item 11: 15.000%
Item 12: IN
SCHEDULE 13G - TO BE INCLUDED IN
STATEMENTS
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b)
This Amendment to Schedule 13G filed by FMR LLC amends
the statement on Schedule 13G previously filed by FMR
Corp., the predecessor of FMR LLC.
Item 1(a). Name of Issuer:
Sonus Networks Incorporated
Item 1(b). Name of Issuer's Principal Executive Offices:
7 Technology Park Drive
Westford, MA 01886
Item 2(a). Name of Person Filing:
FMR LLC
Item 2(b). Address or Principal Business Office or, if None,
Residence:
82 Devonshire Street, Boston,
Massachusetts 02109
Item 2(c). Citizenship:
Not applicable
Item 2(d). Title of Class of Securities:
Common Stock
Item 2(e). CUSIP Number:
835916107
Item 3. This statement is filed pursuant to Rule 13d-1(b) or 13d-2(b)
and the person filing, FMR LLC, is a parent holding company
in accordance with Section 240.13d-1(b)(ii)(G). (Note: See
Item 7).
Item 4. Ownership
(a) Amount Beneficially Owned: 40,253,580
(b) Percent of Class: 15.000%
(c) Number of shares as to which such
person has:
(i) sole power to vote or to direct
the vote: 0
(ii) shared power to vote or to
direct the vote: 0
(iii) sole power to dispose or to
direct the disposition of: 40,253,580
(iv) shared power to dispose or to
direct the disposition of: 0
Item 5. Ownership of Five Percent or Less of a Class.
Not applicable.
Item 6. Ownership of More than Five Percent on Behalf of Another
Person.
Various persons have the right to receive or the power to
direct the receipt of dividends from, or the proceeds from the
sale of, the Common Stock of Sonus Networks Incorporated.
The interest of one person, Fidelity Growth Company Fund,
an investment company registered under the Investment
Company Act of 1940, in the Common Stock of Sonus
Networks Incorporated, amounted to 26,835,720 shares or
10.000% of the total outstanding Common Stock at December
31, 2007.
Item 7. Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on By the Parent
Holding Company.
See attached Exhibit A.
Item 8. Identification and Classification of Members of
the Group.
Not applicable. See attached Exhibit A.
Item 9. Notice of Dissolution of Group.
Not applicable.
Item 10. Certification.
By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were acquired in the
ordinary course of business and were not acquired for the
purpose of and do not have the effect of changing or
influencing the control of the issuer of such securities and
were not acquired in connection with or as a participant in any
transaction having such purpose or effect.
Signature
After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement
is true, complete and correct.
February 13, 2008
Date
/s/Eric D. Roiter
Signature
Eric D. Roiter
Duly authorized under Power of Attorney
dated December 30, 1997 by and on behalf of FMR Corp.
(now known as FMR LLC) and its direct and indirect
subsidiaries
SCHEDULE 13G - TO BE INCLUDED IN
STATEMENTS
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b)
Pursuant to the instructions in Item 7 of Schedule 13G,
Fidelity Management & Research Company ("Fidelity"), 82
Devonshire Street, Boston, Massachusetts 02109, a wholly-
owned subsidiary of FMR LLC and an investment adviser
registered under Section 203 of the Investment Advisers Act
of 1940, is the beneficial owner of 40,154,980 shares or
14.963% of the Common Stock outstanding of Sonus
Networks Incorporated ("the Company") as a result of acting
as investment adviser to various investment companies
registered under Section 8 of the Investment Company Act of
1940.
The ownership of one investment company, Fidelity
Growth Company Fund, amounted to 26,835,720 shares or
10.000% of the Common Stock outstanding. Fidelity Growth
Company Fund has its principal business office at 82
Devonshire Street, Boston, Massachusetts 02109.
Edward C. Johnson 3d and FMR LLC, through its
control of Fidelity, and the funds each has sole power to
dispose of the 40,154,980 shares owned by the Funds.
Members of the family of Edward C. Johnson 3d,
Chairman of FMR LLC, are the predominant owners, directly
or through trusts, of Series B voting common shares of FMR
LLC, representing 49% of the voting power of FMR LLC.
The Johnson family group and all other Series B shareholders
have entered into a shareholders' voting agreement under
which all Series B voting common shares will be voted in
accordance with the majority vote of Series B voting common
shares. Accordingly, through their ownership of voting
common shares and the execution of the shareholders' voting
agreement, members of the Johnson family may be deemed,
under the Investment Company Act of 1940, to form a
controlling group with respect to FMR LLC.
Neither FMR LLC nor Edward C. Johnson 3d,
Chairman of FMR LLC, has the sole power to vote or direct
the voting of the shares owned directly by the Fidelity Funds,
which power resides with the Funds' Boards of Trustees.
Fidelity carries out the voting of the shares under written
guidelines established by the Funds' Boards of Trustees.
Pyramis Global Advisors Trust Company ("PGATC"),
53 State Street, Boston, Massachusetts, 02109, an indirect
wholly-owned subsidiary of FMR LLC and a bank as defined
in Section 3(a)(6) of the Securities Exchange Act of 1934, is
the beneficial owner of 98,600 shares or 0.037% of the
outstanding Common Stock of the Sonus Networks
Incorporated as a result of its serving as investment manager
of institutional accounts owning such shares.
Edward C. Johnson 3d and FMR LLC, through its
control of Pyramis Global Advisors Trust Company, each has
sole dispositive power over 98,600 shares and sole power to
vote or to direct the voting of 0 shares of Common Stock
owned by the institutional accounts managed by PGATC as
reported above.
SCHEDULE 13G - TO BE INCLUDED IN
STATEMENTS
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b)
RULE 13d-1(f)(1) AGREEMENT
The undersigned persons, on February 13, 2008, agree
and consent to the joint filing on their behalf of this Schedule
13G in connection with their beneficial ownership of the
Common Stock of Sonus Networks Incorporated at December
31, 2007.
FMR LLC
By /s/ Eric D. Roiter
Eric D. Roiter
Duly authorized under Power of Attorney dated
December 30, 1997, by and on behalf of FMR Corp. (now
known as FMR LLC) and its direct and indirect subsidiaries
Edward C. Johnson 3d
By /s/ Eric D. Roiter
Eric D. Roiter
Duly authorized under Power of Attorney dated
December 30, 1997, by and on behalf of Edward C. Johnson
3d
Fidelity Management & Research Company
By /s/ Eric D. Roiter
Eric D. Roiter
Senior V.P. and General Counsel
Fidelity Growth Company Fund
By /s/ Eric D. Roiter
Eric D. Roiter
Secretary