There are various types of antenna connectors that are present at one end of the indoor and outdoor antennas. The antenna connectors are used to connect the antenna to the connector on an access point.
There are various types of antenna connectors, some of which are shown in the following images:
The reverse polarity jack type antenna connector has a center pin and the connector threads are outside the connector shell.
The following antenna connectors are used with indoor access points:
The reverse polarity plug type connector has a hollow center socket and the connector threads are inside the connector shell.
The small N-type connectors are used during indoor installations and larger connectors are used for outdoor installations.