In this talk we shall discuss the problem feedback control design in the present of a finite capacity communication channel, which gives rise to tightly coupled limitations in terms of quantization errors, decoding/computational delays and packet loss affecting the closed loop control performance. We restrict our analysis in the context of LQG control subject to SNR limitations, packet loss, and delay and derive their impact on optimal design for the controller parameters. In particular, we shall show that the stability of the closed loop system depends on a tradeoff among quantization, packet loss probability and delay. This analysis recaptures,  as special cases, several results already available in the literature that have treated packet loss, quantization error and delay separately.