Communication Device, a Method of Operating a Communication Device and a Communication System

A communication device comprising:

• means for receiving commands from a plurality of stations;
• adjustment means for adjusting a parameter value in response to the received commands;
• and timing means for timing one or more predetermined time periods;
• wherein
• in response to the receipt of a first command from a first station, the adjustment means is adapted to decrease the parameter value and the timing means is adapted to commence the timing of a first predetermined time period;
• in response to the receipt of a second command from the first station, the timing means is adapted to terminate the timing of the first predetermined time period;
• in response to the receipt of a first command from a second station, the adjustment means is adapted to decrease the parameter value;
• and
• in response to the receipt of a second command from the second stations, the adjustment means is adapted to increase the parameter value unless the timing of the first predetermined time period by the timing means in progress.