> For the complete documentation index, see [llms.txt](https://docs.monogoto.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.monogoto.io/hub/private-networks/edge/global-event/interface.md).

# Interface

An interface is a logical or physical connection between two network elements that allows them to communicate. Interfaces allow the AMF, MME, ENB, GNB & HSS to communicate with each other. 

<figure><img src="/files/emRlpDAPpLCzqrcefj0I" alt=""><figcaption></figcaption></figure>

* **Radio Trunk** -The S1 connection between the radio and the private network's edge.
* **Edge Trunk** -The S6a connection between the edge and to HSS host.