SerialSignal_RI
if (info->signals & SerialSignal_RI)
info->signals |= SerialSignal_RI;
info->signals &= ~SerialSignal_RI;
((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) );
((info->signals & SerialSignal_RI) ? TIOCM_RNG:0) +
info->signals |= SerialSignal_RI;