ble

Hey Kiran,

Here is a chart showing the differences between advertisment types from the BT spec:

Non-connectable undirected adv. notifies scanning devices that they will not respond to scan requests or connection requests. You should take a look at the spec which you can download here: https://www.bluetooth.org/en-us/specification/adopted-specifications. There are also books and other resources available which give good introductory descriptions to BLE.

-Matt