16V.54 loop when Remote Loop is selected by the front panel switches. Ifset to CSU, the Model 2701 will initiate a CSU loop when Remote Loopis selected by the front panel switches.Switch SW2-5 Front Panel Switches.As the Front Panel Switches may be inadvertently toggled, or in theevent that the end-user may not need to use the switches, the installermay disable the front panel switches. Set Switch S2-5 to determinewhether the front-panel toggle switches are active or inactive.Switch SW2-6: V.54 Response Disabled (default).V.54 Response is a special in-band loopback facility that sends apseudo-random pattern over the data stream. This is the only loopbackthat the unit can initiate. This is useful for campus applications when youneed to put a remote unit in loopback. The unit responds to the V.54 loop-back command, and the whole process takes only a few seconds to com-plete. When V.54 Loopback is disabled, the unit will not be able to sendor respond to V.54 loopback commands. The duration of the loopback islimited by the loopback timeout setting.S2-4 RDL TypeOff Initiate a V.54 RDL loop when selectedOn Initiate a CSU loopback when selectedSW2-5 OptionOff Front Panel Switches EnabledOn Front Panel Switches DisabledSW2-6 OptionOff V.54 Response EnabledOn V.54 Response Disabled