The only SLT ports aren't really SLTs, but Digital VMOP which go to the Esna voicemail in another building. The Dial On Conv. for those are set to Deny.

Thanks for the info though, was not aware of that setting. There's not a lot of phones on this Adix, classrooms and a couple offices including unfortunately the nurse's office - she routinely accesses a medical facility with a menu. The main office and I.T. office have 5910 ip phones off the main ECS in another nearby building, which don't have the trouble. For now, or for good we may need to give the nurse an IP phone, and use up one of the licenses in our pool.