Is there a setting to adjust the auto attendant callback delay time? The OBi Device Administration Guide says the callback occurs in 2-seconds. If I call my GV number from my PSTN line and request a callback from the AA attendant, my PSTN line doesn't drop the call circuit until after the callback. If I enter a different callback number it works fine, if I call from my cellphone and request a callback to the cellphone number it works fine.