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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><strong>UNITED
      STATES</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><strong>SECURITIES
      AND EXCHANGE COMMISSION</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Washington,
      D.C.&#160; 20549</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><strong>FORM
      8-K</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>CURRENT
      REPORT</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Pursuant
      to Section&#160;13 or 15(d) of The Securities Exchange Act of
      1934</strong></font></div>
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    <div>
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          <tr>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date
                of Report (Date of earliest event reported)</font></div>
            </td>
            <td align="left" valign="top" width="37%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>June
                28, 2006</strong></font></div>
            </td>
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    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
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                Communications, Inc.</strong></font></div>
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      </table>
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      name of Registrant as specified in charter)</font></div>
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          <tr>
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                or other jurisdiction of</font></div>
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                Employer Identification No.)</font></div>
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                Cushing Parkway, Fremont, CA</strong></font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Address
                of principal executive offices)</font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt">&#160;</font></div>
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                Code)</font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
            </td>
          </tr>
          <tr>
            <td align="left" colspan="3" valign="top" width="36%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Registrant&#8217;s
                telephone number, including area code:&#160;</font></div>
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            <td align="left" colspan="3" valign="top" width="36%" style="border-bottom: black thin solid;">
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                252-9712</strong></font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
            </td>
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            <td colspan="6" valign="top" width="72%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>N/A</strong></font></div>
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                name or former address, if changed since last
                report)</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">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:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">o</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
      Written
      communications pursuant to Rule&#160;425 under the Securities Act (17 CFR
      230.425)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">o</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
      Soliciting material pursuant to Rule&#160;14a-12 under the Exchange Act (17 CFR
      240.14a-12)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">o</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
      Pre-commencement communications pursuant to Rule&#160;14d-2(b) under the
      Exchange Act (17 CFR 240.14d-2(b))</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">o</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
      Pre-commencement communications pursuant to Rule&#160;13e-4(c) under the
      Exchange Act (17 CFR 240.13e-4(c))</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
      4.01 Changes in Registrant&#8217;s Certifying Accountant.</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(a)
      On
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      independent registered public accounting firm of AltiGen Communications, Inc.
      (the &#8220;Company&#8221;). The Audit Committee of the Company&#8217;s Board of Directors
      approved such dismissal for economic reasons. </font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
      audit
      reports of D&amp;T on the consolidated financial statements of the Company as of
      and for the years ended September 30, 2005 and 2004 did not contain an adverse
      opinion or a disclaimer of opinion, and were not qualified or modified as to
      uncertainty, audit scope or accounting principles. </font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">In
      connection with the audits of the years ended September 30, 2005 and 2004,
      and
      the subsequent interim period through June 28, 2006, there were no: (1)
      disagreements with D&amp;T on any matter of accounting principles or practices,
      financial statement disclosure, or auditing scope or procedure, which
      disagreement(s) if not resolved to the satisfaction of D&amp;T would have caused
      D&amp;T to make reference to the subject matter of the disagreement in
      connection with its report, or (2) reportable events (as defined in Item
      304(a)(1)(v) of Regulation S-K). </font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
      Company has provided D&amp;T with a copy of the foregoing disclosure and has
      requested that D&amp;T furnish the Company with a letter, addressed to the
      Securities and Exchange Commission, stating whether or not D&amp;T agrees with
      the statements made herein, and, if not, stating the respects in which it does
      not agree. A copy of the letter from D&amp;T, dated July 5, 2006, is attached to
      this Form 8-K as Exhibit 16.1. </font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(b)
      Effective July 3, 2006, the Audit Committee of the Board of Directors of the
      Company engaged Moss-Adams LLP (&#8220;Moss-Adams&#8221;) as its independent registered
      public accounting firm.&#160;During the Company&#8217;s most recent two years ended
      September 30, 2005 and 2004 through July 3, 2006, neither the Company nor anyone
      acting on its behalf consulted with Moss-Adams regarding either: (1) the
      application of accounting principles to a specified transaction, either
      completed or proposed; or the type of audit opinion that might be rendered
      on
      the Company&#8217;s financial statements, and either a written report was provided to
      the Company or oral advice was provided that Moss-Adams concluded was an
      important factor considered by the Company in reaching a decision as to the
      accounting, auditing or financial reporting issue; or (2) any matter that was
      the subject of a disagreement (as defined in Item 304(a)(1)(iv) of Regulation
      S-K and the related instructions) or a reportable event (as described in Item
      304(a)(1)(v) of Regulation S-K). </font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item&#160;9.01
      Financial Statements and Exhibits.</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 45pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(d)</font><font style="DISPLAY: inline; FONT-SIZE: 3pt; FONT-FAMILY: Times New Roman, serif">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Exhibits</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 9pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">16.1</font><font style="DISPLAY: inline; FONT-SIZE: 3pt; FONT-FAMILY: Times New Roman, serif">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Letter
      from Deloitte &amp; Touche LLP dated July 5, 2006.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
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      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></div>
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            <td width="1%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="49%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
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                Communications, Inc.</strong></font></div>
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            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
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            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">Date:&#160;July
              5,
              2006</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">By:&#160;&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">/s/&#160;Philip
              M.
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                M. McDermott</font></div>
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                <div style="DISPLAY: block; MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Chief
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{"company-data": {"conformed-name": "ALTIGEN COMMUNICATIONS INC", "cik": "0001003607", "assigned-sic": "3661", "irs-number": "943204299"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-27427", "film-number": "06944931"}, "business-address": {"street1": "4555 CUSHING PARKWAY", "city": "FREMONT", "state": "CA", "zip": "94538", "phone": "5102529712"}}
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
Date
                of Report (Date of earliest event reported)
June
                28, 2006
AltiGen
                Communications, Inc.
(Exact
      name of Registrant as specified in charter)
Delaware
000-27427
94-3204299
(State
                or other jurisdiction of
incorporation)
(Commission
                File Number)
(IRS
                Employer Identification No.)
4555
                Cushing Parkway, Fremont, CA
94538
(Address
                of principal executive offices)
(Zip
                Code)
Registrant's
                telephone number, including area code:
(510)
                252-9712
N/A
(Former
                name or former address, if changed since last
                report)
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:
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))
Item
      4.01 Changes in Registrant's Certifying Accountant.
(a)
      On
      June 28, 2006, Deloitte & Touche LLP ("D&T") was dismissed as the
      independent registered public accounting firm of AltiGen Communications, Inc.
      (the "Company"). The Audit Committee of the Company's Board of Directors
      approved such dismissal for economic reasons.
The
      audit
      reports of D&T on the consolidated financial statements of the Company as of
      and for the years ended September 30, 2005 and 2004 did not contain an adverse
      opinion or a disclaimer of opinion, and were not qualified or modified as to
      uncertainty, audit scope or accounting principles.
In
      connection with the audits of the years ended September 30, 2005 and 2004,
      and
      the subsequent interim period through June 28, 2006, there were no: (1)
      disagreements with D&T on any matter of accounting principles or practices,
      financial statement disclosure, or auditing scope or procedure, which
      disagreement(s) if not resolved to the satisfaction of D&T would have caused
      D&T to make reference to the subject matter of the disagreement in
      connection with its report, or (2) reportable events (as defined in Item
      304(a)(1)(v) of Regulation S-K).
The
      Company has provided D&T with a copy of the foregoing disclosure and has
      requested that D&T furnish the Company with a letter, addressed to the
      Securities and Exchange Commission, stating whether or not D&T agrees with
      the statements made herein, and, if not, stating the respects in which it does
      not agree. A copy of the letter from D&T, dated July 5, 2006, is attached to
      this Form 8-K as Exhibit 16.1.
(b)
      Effective July 3, 2006, the Audit Committee of the Board of Directors of the
      Company engaged Moss-Adams LLP ("Moss-Adams") as its independent registered
      public accounting firm. During the Company's most recent two years ended
      September 30, 2005 and 2004 through July 3, 2006, neither the Company nor anyone
      acting on its behalf consulted with Moss-Adams regarding either: (1) the
      application of accounting principles to a specified transaction, either
      completed or proposed; or the type of audit opinion that might be rendered
      on
      the Company's financial statements, and either a written report was provided to
      the Company or oral advice was provided that Moss-Adams concluded was an
      important factor considered by the Company in reaching a decision as to the
      accounting, auditing or financial reporting issue; or (2) any matter that was
      the subject of a disagreement (as defined in Item 304(a)(1)(iv) of Regulation
      S-K and the related instructions) or a reportable event (as described in Item
      304(a)(1)(v) of Regulation S-K).
Item 9.01
      Financial Statements and Exhibits.
(d)
Exhibits
16.1
Letter
      from Deloitte & Touche LLP dated July 5, 2006.
SIGNATURES
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.
AltiGen
                Communications, Inc.
Date: July
              5,
              2006
By:
/s/ Philip
              M.
              McDermott
Philip
                M. McDermott
Chief
                  Financial Officer
Exhibit
      Index
Exhibit
                Number
Exhibit
                Title
16.1
Letter
                from Deloitte & Touche LLP dated July 5, 2006.