5 Aug
2019
5 Aug
'19
9:40 p.m.
On Mon, Aug 05, 2019 at 06:30:14PM +0200, Neels Hofmeyr wrote:
IIUC, in the traditional core network. When an MSC receives a MO SETUP from a local MS, and it does not have this number in the VLR, it should be querying HLR for routing info, (which may subsequently query another HLR) no? why are we only doing VLR lookup in the MSC? Is it simply "To be implemented" ?
Yes, these are leftovers of the OsmoNITB paradigm, being "I am the entire core network". If a subscriber isn't attached, it doesn't exist.
Let me rephrase: back then the subscriber database was in the OsmoNITB and non-attached subscribers did exist. The inability to recognise unattached subscribers as existing crept in during the separation of the HLR.
~N