2009/8/10 Denis Kenzior <[email protected]>: >> It would make sense for the providers to resend the MWI information >> everytime subscriber connects the network and then it would be less >> problematic in case the information couldn't be written to SIM, but I >> don't know if they ever do this. > > Probably they don't, there are also weird roaming cases to consider, where you > receive MWI, turn phone off, step on a plane and turn phone on with some other > network entirely.
There is another case to consider when the SIM is moved to a completely different phone. In fact, I think this is the original reason to store the MWI flag to the SIM. > Can we make the MWI interface smarter somehow? Perhaps by not enabling it > unless at least the EFmwis file is available, or by always storing the EFmwis > contents on the filesystem? I think this makes sense. There is another, related issue with some Nokia modems, though. They might not support low-level, EF access directly, but have some higher level API for accessing things like the MWI flag, HPLMN list and SPN. We might need to think about adding such high-level API support to the driver API as (optional) ops -- especially if other modems behave similarly -- otherwise the ISI modem driver may need some kluge to handing EF writes. Cheers, Aki _______________________________________________ ofono mailing list [email protected] http://lists.ofono.org/listinfo/ofono
