Hi Osmocom Community.
I'd like to extend the SMPP protocol alert notifications to be able to differentiate between IMSI_ATTACH, NORMAL and PERIODIC LURs
The reason is to be able to react to an initial attach by sending a "Welcome" SMS.
SMPP specifies only three status possibilities:
0 = Available
1 = Disabled
2 = Not Available (Detaching)
I've added 3 for IMSI_ATTACH - Actually I ended up using != PERIODIC because not all phones send an ATTACH after a DETACH, some send NORMAL LUR.
With this the ESME can respond to an alert notification that has status 3 by looking up the IMSI to see if it's known/autorised etc (this is outside of osmo-hlr in my use case, although I guess it could also be done by checking what the HLR says inside the MSC)
Anyway.. I'm wondering if anybody else ever did this, and do we want/accept this functionality in master osmo-msc?
Or.. any better ideas on how to do it?
Thanks
k/