Chang, M.-F. , Lin, Y.-B.M.-F. , Lin, Y.-B.ChangPang, A.-C.A.-C.Pang2010-09-032018-07-052010-09-032018-07-052003-03http://ntur.lib.ntu.edu.tw//handle/246246/196770en-USvGPRS: A Mechanism for Voice over GPRSjournal article