Hi Lilly,

> I was trying to setup an OSMO-MSC with an Open5Gs-Corenetwork, so I can send 
> SMS to different UEs. Unfortunately the OSMO-MSC does not connect to the MME 
> of the Open5Gs-Core and I do not find any installation guide for this 
> specific setup.

the osmo-msc and open5gs-mmed communicates via sgs.
On the open5gs side you can find an example confiugration on Supreeth Herle' 
docker repos:
- https://github.com/herlesupreeth/docker_open5gs/blob/master/mme/mme.yaml

The important part is to map tai's to a lai's.
Additional you need to enable sgs on the osmo-msc:

```
sgs
 local-ip 127.0.0.9
 local-port 29118
 vlr-name vlr.THREEGPP_REALM
```

- 
https://github.com/herlesupreeth/docker_open5gs/blob/master/osmomsc/osmo-msc.cfg

You also need to setup an osmo-hlr and have at least the IMSIs of the 
subscriber added to the osmo-hlr's database.
Currently there is no way to connect the osmo-msc to the open5gs-hss.


Best,
lynxis

https://osmocom.org/projects/osmomsc/wiki/SGs_Interface

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