-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 F9S1Rc+vbv8fIW0d+VZW7P8J8VSITv/8HY8CIBu64wKo+LQfEe6SOL6zN5agTyYh
 7uJUAJOpK5pxg87MmvcBqw==

<SEC-DOCUMENT>0001209191-05-013570.txt : 20050303
<SEC-HEADER>0001209191-05-013570.hdr.sgml : 20050303
<ACCEPTANCE-DATETIME>20050303162747
ACCESSION NUMBER:		0001209191-05-013570
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050301
FILED AS OF DATE:		20050303
DATE AS OF CHANGE:		20050303

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DUEHREN DAVID W
		CENTRAL INDEX KEY:			0001231256

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20698
		FILM NUMBER:		05658287

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		7814494100

	MAIL ADDRESS:	
		STREET 1:		C/O BROOKTROUT, INC.
		STREET 2:		250 FIRST AVENUE
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02494

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BROOKTROUT INC
		CENTRAL INDEX KEY:			0000754516
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		IRS NUMBER:				042814792
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		250 FIRST AVE
		STREET 2:		SUITE 300
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02494
		BUSINESS PHONE:		7814494100

	MAIL ADDRESS:	
		STREET 1:		250 FIRST AVE
		STREET 2:		SUITE 300
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02494

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BROOKTROUT TECHNOLOGY INC
		DATE OF NAME CHANGE:	19941021
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-03-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000754516</issuerCik>
        <issuerName>BROOKTROUT INC</issuerName>
        <issuerTradingSymbol>BRKT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001231256</rptOwnerCik>
            <rptOwnerName>DUEHREN DAVID W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BROOKTROUT, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>250 FIRST AVENUE</rptOwnerStreet2>
            <rptOwnerCity>NEEDHAM</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02494</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP Research &amp; Development</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-03-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>13.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>289121</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 28, 2005.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ David W. Duehren</signatureName>
        <signatureDate>2005-03-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----