Chapter 1 Getting StartedAbout ADSL2 testing2 HST-3000 ADSL2 Testing User’s GuideAbout ADSL2 testingThe HST-3000 ADSL testing features use modem emulation(ATU-R Annex A or Annex B) to turn up and troubleshootADSL and ADSL2 services as well as provide ATM statisticsand analysis. The optional internet protocol (IP) suite softwareallows IP/PPP troubleshooting. The on-board web browseroption validates an internet connection.The capabilities of the ADSL features include the following:– Variety of ADSL testing modes for service verification,local loop testing, and network connectivity.– Variety of line modulations:– ANSI T1.413 DMT Full Rate– ITU-T G.992.2 (G.lite)– ITU-T G.992.1 (G.DMT) Full Rate Annex A– Multimode (Annex A)– ITU-T 992.3 (ADSL2)– ITU-T 992.5 (ADSL2+)– Wide range of compatibility with industry standardsMode FunctionADSL Modememulate modeUsed to test basic ADSL physical layerrates, quality and line statistics. Alsoused for testing the following types oflines: IP over Ethernet, IP over ATM,PPP over Ethernet, and PPP over ATM.ADSL ThroughmodeUsed for testing the following types oflines: Bridged Ethernet, IP over ATM,PPP over Ethernet, and PPP over ATM.ATM Loopback Used to loopback ATM cells.Ethernet TEmodeUsed for testing IP over Ethernet andPPP over Ethernet.