<SUBMISSION>
<ACCESSION-NUMBER>0000898318-03-000029
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20030610
<FILING-DATE>20030825
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>MOSTAFA INVESTMENTS LP
<CIK>0001261205
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>333-40624
<FILM-NUMBER>03864458
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>956 BELLVIEW ROAD
<STREET2>C/O MOSTAFA INVESTMENTS
<CITY>MCLEAN
<STATE>VA
<ZIP>22102
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>956 BELLVIEW RD
<CITY>MCLEAN
<STATE>VA
<ZIP>22102
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>ADVANCED SWITCHING COMMUNICATIONS INC
<CIK>0001095583
<ASSIGNED-SIC>3661
<IRS-NUMBER>541865834
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>8330 BOONE BLVD 5TH FL
<CITY>VIENNA
<STATE>VA
<ZIP>22182
<PHONE>7034485540
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>8330 BOONE BOULEVARD 5TH FL
<CITY>VIENNA
<STATE>VA
<ZIP>22182
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>

<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2003-06-10</periodOfReport>


    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001095583</issuerCik>
        <issuerName>ADVANCED SWITCHING COMMUNICATIONS INC</issuerName>
        <issuerTradingSymbol>ASCX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001261205</rptOwnerCik>
            <rptOwnerName>MOSTAFA INVESTMENTS LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>956 BELLVIEW RD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MCLEAN</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>22102</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>

        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $0.0025 par value per share</value>
            </securityTitle>
            <transactionDate>
                <value>2003-06-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value>E</value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8000000</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>

    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person disposed Common Stock pursuant to the Company's Liquidating Trust Agreement, dated as of June 10, 2003, pursuant to which each of the Company's stockholders automatically became the holder of one unit of beneficial interest in the Liquidating Trust for each share of the Company common stock then held of record by such stockholder.  All outstanding Company shares were automatically deemed canceled.</footnote>
        <footnote id="F2">Includes 8,000,000 shares owned by Mostafa Investments Limited Partnership, an investment partnership controlled by Asghar D. Mostafa.</footnote>
    </footnotes>


    <ownerSignature>
        <signatureName>A. Mostafa</signatureName>
        <signatureDate>2003-08-25</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
