Ericsson counter This topic has 5 replies, 1 voice, and was last updated 14 years, 11 months ago by Pix. Viewing 6 posts - 1 through 6 (of 6 total) Author Posts 17th December 2007 at 13:53 #50059 alfredGuest Can anyone tell me if there is a separate counter for Location Update between any two LAC? If yes, what is the counter name? Many thanks. 31st December 2007 at 09:19 #50060 Chirag SethiGuest I want to know about “AMR”, its functionality, basic structure. 31st December 2007 at 21:21 #50061 pixGuest AMR : adaptation of the codec of the voice, depending on the Air-interface radio conditions. If good RXQUAL : codec with low protection but good useful kb/s If bad RXQUAL : codec with high protection but low useful kb/s Pix 1st January 2008 at 13:59 #50062 Chirag SethiGuest How protection is provided… through changing modulation techniques or some other ways? 1st January 2008 at 15:51 #50063 liujunGuest remember the timer for Location Update is T3212 in msc and bsc 1st January 2008 at 21:27 #50064 PixGuest Chirag, The overall throughput is fixed (22kbit/s). What can change is the ratio useful / protection. This is done by using different codec for the voice : 12kb/s 10kb/s 7kb/s 5kb/s etc… The modulation is still the same : GMSK. Regards, Pix Author Posts Viewing 6 posts - 1 through 6 (of 6 total) The forum ‘Telecom Design’ is closed to new topics and replies.