-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 nNu/oRsCWejygP9KXXSqYQ==

<SEC-DOCUMENT>0001181431-03-009792.txt : 20030723
<SEC-HEADER>0001181431-03-009792.hdr.sgml : 20030723
<ACCEPTANCE-DATETIME>20030603184145
ACCESSION NUMBER:		0001181431-03-009792
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030603
FILED AS OF DATE:		20030604

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			THOMAS CHARLES E JR
		CENTRAL INDEX KEY:			0001216927

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-13716
		FILM NUMBER:		03731113

	MAIL ADDRESS:	
		STREET 1:		NORTH PITTSBURGH SYSTEMS, INC.
		STREET 2:		4008 CIBSONIA ROAD
		CITY:			GIBSONIA
		STATE:			PA
		ZIP:			15044-9311

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NORTH PITTSBURGH SYSTEMS INC
		CENTRAL INDEX KEY:			0000764765
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
		IRS NUMBER:				251485389
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4008 GIBSONIA RD
		CITY:			GIBSONIA
		STATE:			PA
		ZIP:			15044-9311
		BUSINESS PHONE:		7244439600

	MAIL ADDRESS:	
		STREET 1:		4008 GIBSONIA ROAD
		CITY:			GIBSONIA
		STATE:			PA
		ZIP:			15044-9311
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd10401.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType>
<periodOfReport>2003-06-03</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000764765</issuerCik>
        <issuerName>NORTH PITTSBURGH SYSTEMS INC</issuerName>
        <issuerTradingSymbol>NPSI</issuerTradingSymbol></issuer>
<reportingOwner>
<reportingOwnerId>
            <rptOwnerCik>0001216927</rptOwnerCik>
            <rptOwnerName>THOMAS CHARLES E JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector>
<isOfficer>0</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>1</isOther>
<officerTitle></officerTitle>
<otherText>Chairman of the Board</otherText></reportingOwnerRelationship></reportingOwner>
<nonDerivativeSecurity>
<securityTitle>
<value>Common Stock</value></securityTitle>
<transactionDate>
<value>2003-05-30</value></transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>J</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved></transactionCoding>
<transactionTimeliness>
<value></value></transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>2000</value></transactionShares>
<transactionValue>
<value>0</value></transactionValue>
<transactionAcquiredDisposedCode>
<value>A</value></transactionAcquiredDisposedCode></transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>25910</value></sharesOwnedFollowingTransaction></postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value></directOrIndirectOwnership>
<natureOfOwnership>
<value></value>
<footnoteId id="F1"/>
<footnoteId id="F5"/></natureOfOwnership></ownershipNature></nonDerivativeSecurity>
<nonDerivativeSecurity>
<securityTitle>
<value>Common Stock</value></securityTitle>
<transactionDate>
<value>2003-05-30</value></transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>J</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved></transactionCoding>
<transactionTimeliness>
<value></value></transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>2000</value></transactionShares>
<transactionValue>
<value>0</value></transactionValue>
<transactionAcquiredDisposedCode>
<value>D</value></transactionAcquiredDisposedCode></transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>9800</value></sharesOwnedFollowingTransaction></postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value></directOrIndirectOwnership>
<natureOfOwnership>
<value></value>
<footnoteId id="F2"/></natureOfOwnership></ownershipNature></nonDerivativeSecurity>
<nonDerivativeSecurity>
<securityTitle>
<value>Common Stock</value></securityTitle>
<transactionDate>
<value>2003-05-30</value></transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>J</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved></transactionCoding>
<transactionTimeliness>
<value></value></transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>0</value></transactionShares>
<transactionValue>
<value>0</value></transactionValue>
<transactionAcquiredDisposedCode>
<value>D</value></transactionAcquiredDisposedCode></transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>25000</value></sharesOwnedFollowingTransaction></postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>I</value></directOrIndirectOwnership>
<natureOfOwnership>
<value>By Son &amp; Daughter</value>
<footnoteId id="F3"/></natureOfOwnership></ownershipNature></nonDerivativeSecurity>
<nonDerivativeSecurity>
<securityTitle>
<value>Common Stock</value></securityTitle>
<transactionDate>
<value>2003-05-30</value></transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>J</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved></transactionCoding>
<transactionTimeliness>
<value></value></transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>0</value></transactionShares>
<transactionValue>
<value>0</value></transactionValue>
<transactionAcquiredDisposedCode>
<value>D</value></transactionAcquiredDisposedCode></transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>6000</value></sharesOwnedFollowingTransaction></postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>I</value></directOrIndirectOwnership>
<natureOfOwnership>
<value>By Son &amp; Daughter</value>
<footnoteId id="F4"/></natureOfOwnership></ownershipNature></nonDerivativeSecurity>
<footnotes>
<footnote id="F1">These shares are held individually by Charles E. Thomas, Jr.</footnote>
<footnote id="F2">The 9,800 shares held of record by Charles E. Thomas, Jr. are held jointly with his wife.</footnote>
<footnote id="F3">These share are held by Charles E. Thomas, Jr., as custodian for individual children.  Three (3) of the children, with beneficial ownerships of 4,200 shares each, are now adults, who are full time university students, but share the same residence during school recesses.  Two (2) of the children, with beneficial ownerships of 6,200 shares each, are minor children having the same residence.  The filing of this report shall not be contrued as an admission that the undersigned is, for the purpose of Section 16(a) of the Act, a beneficial owner of the 25,000.</footnote>
<footnote id="F4">These shares are held individually by three (3) of Charles E. Thomas, Jr.&apos;s adult children (2,000 shares each), who are full time university students, but share the same residence during shool recesses.  The filing of this report shall not be construed as an admission that the undersigned is, for the purpose of Section 16(a) of the Act, a beneficial owner of the 6,000 shares described herein.</footnote>
<footnote id="F5">The 2,000 shares under Footnote #1 &amp; #2 were transferred from the joint account of Charles E. Thomas, Jr. and his wife to the individual account of Charles E. Thomas, Jr.</footnote></footnotes>
<ownerSignature>
<signatureName>Charles E. Thomas, Jr.</signatureName>
<signatureDate>2003-06-03</signatureDate></ownerSignature></ownershipDocument>


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</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----