In this paper, the authors propose the extentended call admission control for real time data transfer in 3GPP LTE networks. There are several works were done on real data transfer in LTE networks, but these works rarely considers the channel quality in the controlling process. The existing techniques don't provide differentiation between the new call and the handoff call and also video traffic is not considered. In order to overcome the above mentioned problems, they propose to design a call admission control algorithm based on channel state. This call admission control algorithm includes three phases: Call Classification, Channel State Estimation and Call Admission.