vlr+hlr: Insert Data

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Jacob Erlbeck jacob01 at gmx.net
Mon Feb 13 13:56:16 UTC 2017


Hi Neels,

On 02/13/2017 12:40 PM, Neels Hofmeyr wrote:
> 
> On Mon, Feb 13, 2017 at 08:13:06AM +0100, Jacob Erlbeck wrote:
> 
>> The MS can still be happy without an MSISDN: GPRS, USSD, MT-calls,
>> MT-SMS shouldn't need it. Or the HLR may decide to send an update with
>> an MSISDN later on (or change it).
> 
> Yes, but I assume "I can call you but you can't call me" is an error state.
> Anyway, I don't really expect this to happen in practice. Would be nice though
> to at least detect it and print an error message or something.

What about a "data only" SIM card that does e.g. not have a fixed IMSI
needing an MT-SMS after initial LU to get a temporary one to be able to
do GPRS etc?

Jacob



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