I m having 2 BSC’s of Ericsson in my network.Now we are thinking to switch over to Nokia BSC’s.So we are planning to make 5 BSC’s of Nokia in comparison to 2 BSC’s of Ericsson.So what are the basic parameters and things which i need to take care about these BSC’s.i mean to say that what kind of Precautions i need to take care before making my city into 5 BSC’s of Nokia