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robert robert.steve07 at gmail.comIn system information type 3 I got the following info: Control Channel Description 1 . . . . . . . = MSCR: MSC is Release ’99 onwards (1) . 1 . . . . . . = ATT: MSs in the cell shall apply IMSI attach and detach procedure (1) . . 00 1 . . . = BS_AG_BLKS_RES: 1 . . . . .110 = CCCH-CONF: 4 basic physical channels used for CCCH, not combined with SDCCCHs (6) . 00 . . . . . = CBQ3: IU mode not supported (0) . . . . . 110 = BS-PA-MFRMS: 6 This is the only info I got about CCCH description. I’m not sure if this is enough for telling that paging is done on other than timeslot 0. Best regards, Robert, On Mar 9, 2016, at 4:00 PM, Sylvain Munaut <246tnt at gmail.com> wrote: > On Wed, Mar 9, 2016 at 2:52 PM, robert <robert.steve07 at gmail.com> wrote: >> Hi, >> >> I didn’t find anything useful yet. Everything seems normal during the IMSI >> attach procedure (location updating request, authentication >> request/response, identity request/response …), I can call and send SMS >> normally but the phone doesn’t get paged in any way. It seems strange that >> no differences can be seen during the IMSI attach procedure while some sim >> cards do not work. > > The specs says it's possible to have paging channels on other time slots than 0. > > I've never seen it any network do that and really not sure why they > would. But support for it is not implemented in osmocom-bb ... > > Record the BCCH system infos messages and look for the CCCH description in them. > > > Cheers, > > Sylvain