Message Transmission Mode
MS measures the frame quality and informs the base station to the result i.e. whether it is in the threshold or periodical mode. Base station determines whether to change the forward transmitting power or not.
In IS-95 system, the forward power control is slow but in CDMA2000 system it is fast.
In IS-95 system, the forward power control is slow but in CDMA2000 system it is fast.