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Harald Welte laforge at gnumonks.orgHi Max, On Thu, May 26, 2016 at 11:31:23AM +0200, Max wrote: > What would be expected behavior for MS in this scenario? I'm not entirely sure what the expected behavior is. > Shall it switch to alternative network in hope of getting promised GPRS? If it is a PS-only device, this might make sense. Not sure if it is mandated anywhere. The problem is if it is a CS + PS device, and if CS registration worked on the cell, but PS doesn't. In that case I've not seen any phone ever considering to select a different cell, let aside a different network. > Shall it hang on the currently camped network providing voice/sms only? > Which spec(s) cover that? What could be decision factors for the MS? SIM > entries, some data in SI, some timeout somewhere, smth else? Cell (re)selection is traditionally specified in 03.22. Not sure where it got moved later (when transitioning to post-rel99). Not sure why 23.022 was withdrawn, but there is now 23.122 which has superseeded it. http://www.etsi.org/deliver/etsi_ts/123100_123199/123122/13.04.00_60/ts_123122v130400p.pdf is the link to the latest release. But it's quite complex with 2G/3G/4G and all the optional features like ProSe, CSG, ... There's also the 2G-only successor of 03.22: 43.022 at http://www.etsi.org/deliver/etsi_ts/143000_143099/143022/13.00.00_60/ts_143022v130000p.pdf -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)