Hi Bijoy,
Generally I have seen a dual band network like 900 band works as a BCCH and 1800 band as a TCH.
But here in the network of Huwaie both the band are working in BCCH and TCH.
We have a basic network over here.
NO hopping is used. No Amr is working. we don’t have enhanced dual band features. Overlay and underlay features are not working.
We are only using inter layer handovers. In which handover from 900 to 1800 are happening easily. But when MS takes the handover on 1800 it does not give the handover to 900 cell.
there is a one more interesting thing. We don’t have the continuous cells of 900 and 1800 band.