USE provisioning;
set autocommit = 0;

SELECT id INTO @pref_id FROM voip_preferences WHERE attribute='support_auto_answer';
DELETE FROM voip_preferences_enum WHERE preference_id=@pref_id;
DELETE FROM voip_preferences WHERE id=@pref_id;

SELECT id INTO @pref_id FROM voip_preferences WHERE attribute='accept_auto_answer';
DELETE FROM voip_preferences_enum WHERE preference_id=@pref_id;
DELETE FROM voip_preferences WHERE id=@pref_id;

commit;