AirLinkOS gateways use LwM2M for device registration, boot strapping and configuration. For AMM 2.18, an OpenVPN management tunnel is used for event notification from the AirLink OS router.
Note: Only one OpenVPN tunnel is supported on AirLink OS routers. This tunnel is reserved for communication between the AirLink OS router and AMM. Therefore, if the device is managed by AM/AMM, customers cannot configure the OpenVPN tunnel for any other purpose.
For information on how to configure an AirLink OS router, see Transitioning AirLink OS routers
The AMM waits for connections from the AirLink OS router. As long as AirLink OS router is correctly configured, it should try to connect to the AMM as soon as the device boots.
For a list of related ports and protocols for this functionality see AirLink OS routers.