Hi RBS
This feature is enabled BTS wise and is enabled by us when we create the BTS database,since i am not using Notel so i can’t tell you the exact steps how to disable it there, we are using ZTE and Huawei in our NW, in Huawei we can modify this parameter by MML, so you will have to ask someone from Nortel about the exact steps to disable this.
Regards
Tanuj