<SEC-DOCUMENT>0001167674-13-000468-index.html : 20130211
<SEC-HEADER>0001167674-13-000468.hdr.sgml : 20130211
<ACCEPTANCE-DATETIME>20130211171008
ACCESSION NUMBER:		0001167674-13-000468
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20130211
DATE AS OF CHANGE:		20130211

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TOLLGRADE COMMUNICATIONS INC \PA\
		CENTRAL INDEX KEY:			0001002531
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-TELEPHONE INTERCONNECT SYSTEMS [7385]
		IRS NUMBER:				251537134
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-50381
		FILM NUMBER:		13592982

	BUSINESS ADDRESS:	
		STREET 1:		3120 UNIONVILLE ROAD
		STREET 2:		SUITE 400
		CITY:			CRANBERRY TWP.
		STATE:			PA
		ZIP:			16046
		BUSINESS PHONE:		724-720-1400

	MAIL ADDRESS:	
		STREET 1:		3120 UNIONVILLE ROAD
		STREET 2:		SUITE 400
		CITY:			CRANBERRY TWP.
		STATE:			PA
		ZIP:			16046

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DIMENSIONAL FUND ADVISORS LP
		CENTRAL INDEX KEY:			0000354204
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				222370029
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		6300  BEE CAVE ROAD
		STREET 2:		BUILDING ONE
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746
		BUSINESS PHONE:		(512) 306-7400

	MAIL ADDRESS:	
		STREET 1:		6300  BEE CAVE ROAD
		STREET 2:		BUILDING ONE
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DIMENSIONAL FUND ADVISORS INC
		DATE OF NAME CHANGE:	19920929
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>rrd468.htm
<DESCRIPTION>SCHEDULE 13G/A
<TEXT>
Document 1 - file: rrd468.htm

</DOCUMENT>
</SEC-DOCUMENT>