RFCOMM_V24_RTC
d->v24_sig = RFCOMM_V24_RTC | RFCOMM_V24_RTR | RFCOMM_V24_DV;
v24_sig |= RFCOMM_V24_RTC;
v24_sig &= ~RFCOMM_V24_RTC;
((v24_sig & RFCOMM_V24_RTC) ? TIOCM_DSR : 0) |