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  <p style="border:none;color:windowtext;margin:0in 0in .0001pt;padding:0in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
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  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED
  STATES</font></b></p>
  
  <h2 style="color:windowtext;font-weight:bold;margin:0in 0in .0001pt;page-break-after:avoid;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">SECURITIES AND
  EXCHANGE COMMISSION</font></b></h2>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">WASHINGTON, D.C. 20549</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><hr size="1" width="25%" noshade color="black" align="center"></div>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;8-K</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT REPORT</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Pursuant to Section&nbsp;13 or 15(d)&nbsp;of the
  Securities Exchange Act of 1934</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <h1 style="color:windowtext;font-weight:bold;letter-spacing:-.1pt;line-height:normal;margin:0in 0in .0001pt;page-break-after:avoid;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:0pt;">May&nbsp;8, 2008</font></b></h1>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Date of Report (Date of earliest event reported)</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><hr size="1" width="25%" noshade color="black" align="center"></div>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SONUS
  NETWORKS, INC.</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact Name of Registrant as Specified in its Charter)</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="center">
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">DELAWARE</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">000-30229</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">04-3387074</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or Other Jurisdiction</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission File Number)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(IRS Employer</font></p>
    </td>
   </tr>
   <tr>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">of Incorporation)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.0%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Identification No.)</font></p>
    </td>
   </tr>
  </table>
  
  </div>
  
  <p style="color:black;margin:0in 0in .0001pt;"><font size="2" color="black" face="Times New Roman" style="color:windowtext;font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">7 TECHNOLOGY PARK DRIVE, WESTFORD, MASSACHUSETTS 01886</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of Principal Executive Offices) (Zip Code)</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(978) 614-8100</font></b></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant&#146;s telephone number, including area code)</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><hr size="1" width="25%" noshade color="black" align="center"></div>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="left" style="color:windowtext;font-weight:bold;margin:0in 0in .0001pt;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Check the
  appropriate box below if the Form&nbsp;8-K filing is intended to simultaneously
  satisfy the filing obligation of the registrant under any of the following
  provisions (<i>see</i> General
  Instruction A.2. below):</font></b></p>
  
  <p align="left" style="color:windowtext;font-weight:bold;margin:0in 0in .0001pt;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
  
  <p align="left" style="color:windowtext;font-weight:bold;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><b><font size="2" face="Wingdings" style="font-size:10.0pt;font-weight:normal;">o</font></b><font size="2" style="font-size:10.0pt;font-weight:normal;">&#160; Written communications pursuant
  to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</font></p>
  
  <p align="left" style="color:windowtext;font-weight:bold;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><b><font size="2" face="Wingdings" style="font-size:10.0pt;font-weight:normal;">o</font></b><font size="2" style="font-size:10.0pt;font-weight:normal;">&#160; Soliciting material pursuant to Rule&nbsp;14a-12
  under the Exchange Act (17 CFR 240.14a-12)</font></p>
  
  <p align="left" style="color:windowtext;font-weight:bold;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><b><font size="2" face="Wingdings" style="font-size:10.0pt;font-weight:normal;">o</font></b><font size="2" style="font-size:10.0pt;font-weight:normal;">&#160; Pre-commencement communications
  pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17 CFR
  240.14d-2(b))</font></p>
  
  <p align="left" style="color:windowtext;font-weight:bold;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><b><font size="2" face="Wingdings" style="font-size:10.0pt;font-weight:normal;">o</font></b><font size="2" style="font-size:10.0pt;font-weight:normal;">&#160; Pre-commencement communications
  pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act (17 CFR
  240.13e-4(c))</font></p>
  
  <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0in 0in 0in 0in;">
  
  <p align="left" style="border:none;color:windowtext;font-weight:bold;margin:0in 0in .0001pt;padding:0in;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
  
  </div>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='',FILE='C:\JMS\jthomas\08-13885-1\task2923839\13885-1-ba.htm',USER='105076',CD='May  8 14:54 2008' -->
  
  
  <br clear="all" style="page-break-before:always;">
  
  
  <div style="font-family:Times New Roman;">
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The
  information in this Current Report on Form&nbsp;8-K </font><font size="2" style="font-size:10.0pt;">and the exhibit attached hereto </font><font size="2" style="font-size:10.0pt;">shall not be
  deemed &#147;filed&#148; for purposes of Section&nbsp;18 of the Securities Exchange Act
  of 1934, as amended, (the &#147;Exchange Act&#148;) or incorporated by reference in any
  filing under the Securities Act of 1933, as amended, or the Exchange Act,
  except as shall be expressly set forth by specific reference in such a filing.</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.02. Results of Operations and Financial Condition.</font></b></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On
  May&nbsp;8, 2008,&nbsp;Sonus Networks,&nbsp;Inc. issued a press release </font><font size="2" style="font-size:10.0pt;">reporting financial results for the
  quarter ended March&nbsp;31, 2008.&#160; A
  copy of the press release is furnished as Exhibit&nbsp;99.1 hereto.</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9.01. Financial Statements and Exhibits.</font></b></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="right">
  
  <table border="0" cellspacing="0" cellpadding="0" width="674" style="border-collapse:collapse;width:505.45pt;">
   <tr>
    <td width="6%" valign="top" style="padding:0in .7pt 0in .7pt;width:6.12%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.22%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="91%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:91.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Exhibits</font></p>
    </td>
   </tr>
   <tr>
    <td width="6%" valign="top" style="padding:0in .7pt 0in .7pt;width:6.12%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.22%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="91%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:91.66%;">
    <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="6%" valign="top" style="padding:0in .7pt 0in .7pt;width:6.12%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.22%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="91%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:91.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The
    following exhibit relating to Item 2.02 shall be deemed to be furnished, and
    not filed:</font></p>
    </td>
   </tr>
   <tr>
    <td width="6%" valign="top" style="padding:0in .7pt 0in .7pt;width:6.12%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.22%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="91%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:91.66%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="6%" valign="top" style="padding:0in .7pt 0in .7pt;width:6.12%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.22%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="6%" valign="top" style="padding:0in .7pt 0in .7pt;width:6.06%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">99.1</font></p>
    </td>
    <td width="85%" valign="top" style="padding:0in .7pt 0in .7pt;width:85.6%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">Press release of Sonus Networks,&nbsp;Inc. dated May&nbsp;8,
    2008 reporting financial results for the quarter ended March&nbsp;31, 2008</font><font size="2" style="font-size:10.0pt;">.</font></p>
    </td>
   </tr>
  </table>
  
  </div>
  
  <p style="color:windowtext;line-height:normal;margin:0in 0in .0001pt 1.5in;page-break-after:auto;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <h1 style="color:windowtext;font-weight:bold;letter-spacing:-.1pt;line-height:normal;margin:0in 0in .0001pt;page-break-after:avoid;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">SIGNATURE</font></b></h1>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">Pursuant to the requirements of the Securities
  Exchange Act of 1934, the Registrant has duly caused this report to be signed
  on its behalf by the undersigned hereunto duly authorized.</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
  
  <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.16%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">Date: May&nbsp;8, 2008</font></p>
    </td>
    <td width="50%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:50.84%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.1pt;">SONUS NETWORKS,&nbsp;INC.</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.16%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
    </td>
    <td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.14%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="46%" valign="top" style="padding:0in .7pt 0in .7pt;width:46.7%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.1pt;">&nbsp;</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.16%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
    </td>
    <td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.14%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">By:</font></p>
    </td>
    <td width="46%" valign="top" style="padding:0in .7pt 0in .7pt;width:46.7%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.16%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
    </td>
    <td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.14%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
    </td>
    <td width="46%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:46.7%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">/s/ Richard J. Gaynor</font><font size="2" style="font-size:10.0pt;"> </font></p>
    </td>
   </tr>
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.16%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
    </td>
    <td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.14%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
    </td>
    <td width="46%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:46.7%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">Richard J. Gaynor</font><font size="2" style="font-size:10.0pt;"> </font></p>
    </td>
   </tr>
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.16%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
    </td>
    <td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.14%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.1pt;">&nbsp;</font></p>
    </td>
    <td width="46%" valign="top" style="padding:0in .7pt 0in .7pt;width:46.7%;">
    <p style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">Chief Financial Officer</font></p>
    </td>
   </tr>
  </table>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>
  
  <div style="color:windowtext;margin:0in 0in .0001pt;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='2',FILE='C:\JMS\jthomas\08-13885-1\task2923839\13885-1-ba.htm',USER='105076',CD='May  8 14:54 2008' -->
  
  
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  <div>
  
  <p align="center" style="color:windowtext;line-height:normal;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.1pt;">&nbsp;</font></b></p>
  
  <p align="center" style="color:windowtext;line-height:normal;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.1pt;">Exhibit&nbsp;Index</font></b></p>
  
  <p align="center" style="color:windowtext;line-height:normal;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="center">
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.56%;">
    <p style="color:windowtext;line-height:normal;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.1pt;">99.1</font></b></p>
    </td>
    <td width="1%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:1.22%;">
    <p style="color:windowtext;line-height:normal;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;letter-spacing:-.1pt;">&nbsp;</font></b></p>
    </td>
    <td width="94%" valign="top" style="padding:0in .7pt 0in .7pt;width:94.22%;">
    <p style="color:windowtext;line-height:normal;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.1pt;">Press release
    of Sonus Networks,&nbsp;Inc. dated May&nbsp;8, 2008 reporting financial
    results for the quarter ended March&nbsp;31, 2008.</font></b></p>
    </td>
   </tr>
  </table>
  
  </div>
  
  <p align="center" style="color:windowtext;line-height:normal;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p align="center" style="color:windowtext;line-height:normal;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>
  
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metadata_filer: {"company-data": {"conformed-name": "SONUS NETWORKS INC", "cik": "0001105472", "assigned-sic": "7373", "irs-number": "043387074", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-30229", "film-number": "08814251"}, "business-address": {"street1": "7 TECHNOLOGY PARK DRIVE", "city": "WESTFORD", "state": "MA", "zip": "01886", "phone": "9786148100"}, "mail-address": {"street1": "7 TECHNOLOGY PARK DRIVE", "city": "WESTFORD", "state": "MA", "zip": "01886"}}
text: UNITED
  STATES
  SECURITIES AND
  EXCHANGE COMMISSION
  WASHINGTON, D.C. 20549
  FORM 8-K
  CURRENT REPORT
  Pursuant to Section 13 or 15(d) of the
  Securities Exchange Act of 1934
  May 8, 2008
  Date of Report (Date of earliest event reported)
  SONUS
  NETWORKS, INC.
  (Exact Name of Registrant as Specified in its Charter)
  DELAWARE
  000-30229
  04-3387074
  (State or Other Jurisdiction
  (Commission File Number)
  (IRS Employer
  of Incorporation)
  Identification No.)
  7 TECHNOLOGY PARK DRIVE, WESTFORD, MASSACHUSETTS 01886
  (Address of Principal Executive Offices) (Zip Code)
  (978) 614-8100
  (Registrant's telephone number, including area code)
  Check the
  appropriate box below if the Form 8-K filing is intended to simultaneously
  satisfy the filing obligation of the registrant under any of the following
  provisions (
  see
  General
  Instruction A.2. below):
  o
  Written communications pursuant
  to Rule 425 under the Securities Act (17 CFR 230.425)
  o
  Soliciting material pursuant to Rule 14a-12
  under the Exchange Act (17 CFR 240.14a-12)
  o
  Pre-commencement communications
  pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
  240.14d-2(b))
  o
  Pre-commencement communications
  pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
  240.13e-4(c))
  The
  information in this Current Report on Form 8-K
  and the exhibit attached hereto
  shall not be
  deemed "filed" for purposes of Section 18 of the Securities Exchange Act
  of 1934, as amended, (the "Exchange Act") or incorporated by reference in any
  filing under the Securities Act of 1933, as amended, or the Exchange Act,
  except as shall be expressly set forth by specific reference in such a filing.
  Item 2.02. Results of Operations and Financial Condition.
  On
  May 8, 2008, Sonus Networks, Inc. issued a press release
  reporting financial results for the
  quarter ended March 31, 2008.  A
  copy of the press release is furnished as Exhibit 99.1 hereto.
  Item 9.01. Financial Statements and Exhibits.
  (d)
  Exhibits
  The
    following exhibit relating to Item 2.02 shall be deemed to be furnished, and
    not filed:
  99.1
  Press release of Sonus Networks, Inc. dated May 8,
    2008 reporting financial results for the quarter ended March 31, 2008
  .
  SIGNATURE
  Pursuant to the requirements of the Securities
  Exchange Act of 1934, the Registrant has duly caused this report to be signed
  on its behalf by the undersigned hereunto duly authorized.
  Date: May 8, 2008
  SONUS NETWORKS, INC.
  By:
  /s/ Richard J. Gaynor
  Richard J. Gaynor
  Chief Financial Officer
  2
  Exhibit Index
  99.1
  Press release
    of Sonus Networks, Inc. dated May 8, 2008 reporting financial
    results for the quarter ended March 31, 2008.
  3