Phones are unreachable This topic has 10 replies, 1 voice, and was last updated 13 years, 2 months ago by Rex. Viewing 11 posts - 1 through 11 (of 11 total) Author Posts 15th September 2010 at 05:01 #64279 DT AnalyserGuest If the phone is active, but is not reachable near the site. What can be the reasons? It happens for many phones. Site works properly. 15th September 2010 at 05:08 #64280 SotonGuest Check if there are any paging discards on the site 15th September 2010 at 05:20 #64281 PixGuest Hello, Did you enable the parameter “ATT” that allows a MS to perform an IMSI Attach ? Otherwise the phone is ON, but not attached. Second possibility: the MS was detached too early. Check that you T DETACH in the VLR (NSS parameter) is 2x greater (and a little more) than your T3212. T_Detach = (2 x T3212)+20mn for example. 15th September 2010 at 08:58 #64282 DT AnalyserGuest Dears, It happens most time, but not always. 15th September 2010 at 13:35 #64283 pixGuest wow, that’s a valuable info… :)) 15th September 2010 at 14:26 #64284 DT AnalyserGuest SDCCH Congestion: can be the reason? 15th September 2010 at 18:59 #64285 pixGuest yes, but it would also impact call being setup up. 16th September 2010 at 06:45 #64286 RexGuest Hi, how many AGCHs you have in that cell? Check if there are to many declared. If few paging channels then you might experience unreachable case. Regards, Rex. 16th September 2010 at 09:48 #64287 DT AnalyserGuest Ho can İ check in Huawei? 16th September 2010 at 12:27 #64288 DT AnalyserGuest How can I check Paging Response Rate by Cell level in Huawei??? 17th September 2010 at 14:41 #64289 RexGuest Hi, I don’t know about Huawei. Regards, Author Posts Viewing 11 posts - 1 through 11 (of 11 total) The forum ‘Telecom Design’ is closed to new topics and replies.