The common used ADSL Tester is ADSL2+ Tester. It is an easy-to-use, hand-held advanced telecommunication tester that used for the installation, maintenance and measurement of ADSL2+ service. This tester supports the testing function such as parameter, error, DMM, PING that related to ADSL2+ service, user register authentication on the ADSL2+ user’s line side. It also directly enables the engineers to verify, troubleshoot and evaluate the ADSL2+ service. It is the right tool for the network test job.