In 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(a)gmail.com> wrote:
On Wed, Mar 9, 2016 at 2:52 PM, robert
<robert.steve07(a)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