A wireless telecommunications system is provided for connecting to a data link
and for routing data packets between the data link and a subscriber terminal. The
wireless telecommunications system provides a group of communication channels arranged
to utilise a radio resource. The group is shared by a plurality of subscriber terminals.
A subscriber controller within the subscriber terminal is arranged, when a data
packet is to be transmitted to the data link, to acquire a communication channel
from the group to enable that data packet to be transmitted. A resource monitor
is then used to receive information concerning traffic loading, and to apply predetermined
criteria to determine how long the communication channel may be acquired for by
the subscriber terminal before causing the subscriber controller to release the
communication channel.