Is it yet possible to deactivate your call waiting feature and have the callers hear a busy signal when you are on the phone? I really need to be able to do this and I hope that I am able to someone with this service. I had been told a few months ago it could be done via the ata and I had called in and they said they reprogrammed my ata, but it never was able to work and my call waiting would never turn off. Then when it did(randomly at times) if would ring and ring and ring or just go silent for the caller. I cannot have calls go to voicemail, or receive an error message either. It would have to be a busy signal. I hope someone can help me with this and Ill be waiting for you response anxiously. Thank You.