Complex sentence: A commonly used value is class 10 for many GPRS/EGPRS mobiles which uses a maximum of 4 timeslots in downlink direction and 2 timeslots in uplink direction.
Split into simpler sentences: A commonly used multislot class is class 10 for many GPRS/EGPRS mobiles. A class 10 mobile uses a maximum of 4 timeslots in downlink direction and 2 timeslots in uplink direction.