Network switch and terminal device

An apparatus comprising:

• a memory;
• and
• a processor disposed in communication with said memory, and configured to issue a plurality of processing instructions stored in the memory that causes the apparatus to:
• determine a total time period for a data stream associated with an exchange;
• determine a representative time period within the total time period;
• determine traffic for the representative time period and associated with at least a terminal device;
• and
• calculate a coincident traffic value that indicates whether the terminal device sent or received traffic during the representative time period with the exchange.

A computer implemented method for determining a coincident traffic value between an exchange device and a terminal device, the computer implemented method comprising:

• determining a total time period for a data stream associated with an exchange device;
• determining a representative time period within the total time period;
• determining traffic for the representative time period;
• and
• calculating a coincident traffic value that indicates whether the terminal device sent or received traffic during the representative time period from the exchange device, wherein the coincident traffic value indicates an overlap of the terminal device with a peak traffic period of the exchange device.