DT Etherlink IV User Manual- 33 -Figure 3.5 Example of distribution of time slots in an SHDSL frame at a line rate of 89x64 kbit/s inthe mode when both E1 interfaces 1280 kbps of V.35 and both internal WAN1 and WAN2 ports areused for the termination device.3.2.4 Test LoopsThe possibility to activate test loops on E1 or SHDSL line interface simplifies the device start-and-adjustment.Figure 3.6. Test loopsTest loops can be activated for the Master and Slave devices as well as for the Regenerator.The LOOP1 ON/OFF N command is used to activate/deactivate LOOP1, where N is the number ofthe network interface.LOOP2 M:N, where M is the number of the line interface and N is the number of the Regenerator,can be activated only remotely. This command allows activating remotely a loop back to thedevice, from which the command was sent. It means that if LOOP2 is activated remotely by theMaster Regenerator SlaveE1InterfaceE1InterfaceRXTXLOOP1 LOOP1LOOP2 1:RLOOP2 1:1LOOP2 1:1
