PDF user manual for CopperEdge 150

'6/RRSEDFNVFor DS3 boards, either ATM or Frame, you must configure loopbacksthrough the dsx3Config group. (See the CopperEdge 150CopperCraft Reference and MIB Definitions manual.)Three types of loopbacks are possible for DS3 boards: inwardloops, near-end line loops, and far-end line loops. For the inwardloop test and the far-end line loop test, the CopperEdgemust generate test packets, using a generator on its SystemControl Module. For the near-end line loop test, a remote devicemust generate test packets and send them to the CopperEdge.CopperEdge DSLAMDSX3ModuleSystemControlModuleFar-End Line LoopNear-End Line LoopDS3 Loopback ModesInwardLoopAfter setting the loopback tests for DS3 boards with thedsx3ConfigTable group of objects, you are ready to send testpackets and then read the results of the tests using the cmLoopgroup of objects.Setting up loopback and then starting, interrupting, and completingloopback tests are trapped events. As such, all of themare reported to the trap receiver.The current CE150 product release does not support multiplesimultaneous loopback tests. Only one test can be run at anyone time. Moreover, the CE150 loopback test software makesno assumptions and has no prior intelligence about the loopunder test. If the loop is open, even if only temporarily becauseup- or downstream equipment is busy, the test will run but theCE150 will report errors.&RSSHU(GJH,QVWDOODWLRQDQG2SHUDWLQJ*XLGH