To connect a eNB / gNB to an external core network, you can use services with software type "enb" / "gnb"

There are two important parameters to connect to another core network:

• AMF List: List of addresses of your external core networks
• PLMN List: List of PLMN settings which you might need to change to adapt to your external core network

If you are doing 4G, please replace "AMF" with "MME" along this tutorial. By default, addresses are IPv6 addresses from the Re6st Network, if your external core network is not part of Re6st Network then please enable "Use IPv4" option in the parameters, in that case you will be able to use local IPv4.

First, enter a name for the core network you want to connect to (you can chose whatever name you want). Then, click on the "+" button on the right (highlighted in red on the picture)

Then, enter the AMF address of you core network, which will be either a global IPv6 or a local IPv4 depending if you enabled "Use IPv4" parameter or not. If you wish to add more core networks, change the name and click again on the "+" button.

By default the PLMN configuration for ORS is:

• PLMN ID (Public Land Mobile Network ID): 00101
• TAC (Tracking Area Code): 100
• No RANAC (RAN Area Code) is set
• Reserved (Is the cell reserved for operator use): false

If this configuration is different for your core network, please configure the PLMN list. First, enter a name and click on the "+" button as for the AMF list. Then configure the parameters to match your core network.