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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 MS8nY4EyCMw0B0psB3Ua6PdPuHEwyyuK+EAPsbQZ12kNVmBLeRHc9yoAXXp+icp8
 cuWlyWqWhygaB2wpNRb6AQ==

<SEC-DOCUMENT>0001209191-03-017304.txt : 20030904
<SEC-HEADER>0001209191-03-017304.hdr.sgml : 20030904
<ACCEPTANCE-DATETIME>20030815131834
ACCESSION NUMBER:		0001209191-03-017304
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030801
FILED AS OF DATE:		20030805
DATE AS OF CHANGE:		20030904

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ISON JOHN W
		CENTRAL INDEX KEY:			0001231253

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20698
		FILM NUMBER:		03850169

	BUSINESS ADDRESS:	
		STREET 1:		C/O BROOKTROUT, INC.
		STREET 2:		250 FIRST AVENUE
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02494
		BUSINESS PHONE:		7814494100

	MAIL ADDRESS:	
		STREET 1:		C/O BROOKTROUT, INC.
		STREET 2:		250 FIRST AVENUE
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02494
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-08-01</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000754516</issuerCik><issuerName>BROOKTROUT INC</issuerName>        <issuerTradingSymbol>BRKT</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001231253</rptOwnerCik><rptOwnerName>ISON JOHN 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>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>VP Product Management</officerTitle></reportingOwnerRelationship></reportingOwner
><derivativeTable><derivativeTransaction><securityTitle><value>Employee Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>7.19</value></conversionOrExercisePrice><transactionDate><value>2003-08-01</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>25000</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-08-01</value><footnoteId id="F1" /></exerciseDate><expirationDate><value>2013-08-01</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>25000</value></underlyingS
ecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>25000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">The option is exercisable in four equal annual installments beginning on the date of grant.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>/s/ John W. Ison</signatureName><signatureDate>2003-08-05</signatureDate></ownerSignature></ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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