Will a sensor going offline in home/away mode trigger siren alarm?

I have professional monitoring and generally set ring to home and armed mode at nights and away when going out of town. I have also noticed that some of our door contact sensors randomly go offline from time to time and sometimes come back on their own or have to be reset. But so far not while in home or away mode (that I've noticed). It doesn't say tampered in these cases, just offline. If this happens in home/away mode, will that trigger the alarm? I'd like to avoid triggering the siren and alarm in the dead of night especially for just an offline sensor.