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Digital Subscriber Line (DSL) Testing

Glossary

ADSL	asymmetric digital subscriber line
CAP	carrierless amplitude and phase modulation
CO	central office
DAML	digital added main line
DLC	digital loop carrier
DMT	discreet multitone
DSL	digital subscriber line
DSLAM	digital subscriber line access multiplexer
FEXT	far-end crosstalk
HDSL	high bit-rate digital subscriber line
ISDN	integrated services digital network
LEC	local exchange carrier
MTAU	metallic test access unit
NEXT	near-end crosstalk
NID	network interface device
NTT	number test trunk
OSP	outside plant
OSS	operational support system
PGTC	pair gain test controller
POTS	plain old telephone service
RRD	revised resistance design
SDSL	symmetrical digital subscriber line
TOS	testing operating system
xDSL	generic digital subscriber line

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DOWNLOAD PDF of this tutorial RELATED PRODUCT PROFILES: Cornet Technology, Inc. - SL-2000 Digital Subscriber Line (DSL) Test Access Switch

TABLE OF CONTENTS: Definition and Overview 1 Need for xDSL Loop Prequalification 2 Methodologies for xDSL Loop Prequalification 3 xDSL Testing Needs 4 Discussion of Load Coils 5 Measurement of Line Length 6 Bridge Tap Detection 7 Crosstalk, Metallic Fault, and Longitudinal Balance Testing 8 Gaining Access to the Copper Loop for Test 9 References Self-Test Correct Answers Glossary Comment on This Tutorial