Hi DearsThis is v.jahandideh a communication engineering student. I am studding TETRA protocol and i need your help.i want to know how we can distinguish voice traffic for a specific subscriber,can we do it by extracting the AACH and then looking to the header in AACH and associating a traffic usage marker whit each individual down link conversation. or there exist another solution for this problem. I would be appreciated if could make time to reply to my inquiry.sincerely yoursv.jahandideh