hi bipin,
perhaps you should describe your probleml better
is it a dualband cell (concentric) ?
which vendor is it ?
during call setup, how can a MS be reverted to the old channel ? There is no old channel !
Changing the BCCH TX POWER is weird… is there such a parameter ? Normally all TRXs are emitting at the same power, except in specific implementation of concentric cells.
cheers
pix