2.1.2.2 Role/Service Relationships
OTA Client shall be a GATT Client and GAP Central role and OTA Server shall be a GATT Server and GAP peripheral role. The following diagram illustrates the relationships between service and profile roles. An OTA Server shall instantiate the OTA Service [1].
![](GUID-94D735BE-AD78-489C-A633-750896337822-high.png)