AMR codes, such as FR for. EFR and HR . Increase performance and ... increase the capacity of the network, provides the ... as more phones equipped with AMR it . Increased network capacity means more people can at a time from each tower, do not use and contact, failed to reduce . AMR with the adaptive being the performance acquires . AMR, unlike the standards, automatically in different scenarios, based on conditions on the signal acts continuously to transfer the sounds adjusts