@PIX even for Alcatel BBH is realized such that in Downlink Call Hops from one TRX to other TRX while in uplink call remains on the same TRX to which it is initally assigned and that TRX hops over all the frequencies in the MAL.
So from reception point of view it is same as SFH that is one TRX having different frequencies but in downlink hopping is only realized by shifting call to different TRXs as transmitter of one TRX doesnt hop to different frequencies.