Dear Pix,
Ofcourse the freq plan is similar in the two ie… DFH and BBH. But by planning overload, i thought that Mania meant to say that in future for upgrades/expansions, BBH wont be able to fulfill the requirements and there will be need for a transition from BBH to SFH.So,transition is easy from DFH to SFH because unlike Alcatel, I have heard that in some vendors, they need to put an extra equipment in site to support BBH.
But now after your comment..i realized that maybe Mania was talking abt the Frequency planning overload which would be the same for both of them…So, i take my words back 🙂