Programming InterfacePage 234 4(If &Q1, &Q2, &Q3, or &Q4 are selected)&Cn has no effect. RLSD shows current state of carrier.Result Codes:OK n=0,1.Error Otherwise.&Dn Data Terminal Ready OptionThis command interprets how the modem will respond to the state of the DTR signaland changes to the DTR signal.&D0 DTR ignored.&D1 Go to command mode on on-to-off DTR transition.&D2 Hang up and go to command mode on on-to-off DTRtransition. Autoanswer is disabled if DTR is low.&D3 Reset on on-to-off DTR transition.Result Codes:OK n=0,1,2,3.Error Otherwise.&F Load Factory SettingsThis command loads the configuration stored and programmed at the factory. Thisoperation replaces all of the command options and S register settings in the activeconfiguration with factory values stored in nonvolatile RAM.&F Recall factory settings as active configuration.Result Codes:OK n=0.Error Otherwise.&Gn Guard Tone OptionThis command determines which guard tone, if any, to transmit while transmitting inthe high band (answer mode). This command is only used in V22 and V22bis mode.&G0 No guard tones.
