With Cambium Networks' latest ePMP firmware release (4.7), they have added the ability to create small, affordable Point to Multi-Point (PtMP) networks, utilising any Force 300 device as both the Access Point and Subscriber Module.

When configured in TDD mode, they now support up to 12 Subscriber Modules; this is perfect for connecting a couple of buildings, for example, for internet connectivity or to connect a Camera or other smart device to your network.

We will use the Quick Start function in this example to pair 1x Force 300-CSML to 2x Force 300-13L.

This guide assumes your devices have been upgraded to version 4.7 or newer and can log into them on their default configuration.

Access Point Configuration

1. Log in to the first radio and update the password as prompted; here, you can enable alternative logins if required.

2. Select the Quick Start option in the left-hand column and Start Setup to begin configuration.

3. This radio will be the Access Point for the PtMP Network; give it a unique name and SSID:

4. Select the Radio tab and make sure the driver mode is set to TDD. We would recommend the use of a Flexible Downlink/Uplink Ratio and 20 MHz Channel Bandwidth to minimize the potential for interference:

Note in this example, we have set the Frequency Carrier to 5745, but it is recommended to use the Spectrum Analyzer tool and select a clean channel. If you are new to wireless, you should also check our basic overview of the GURL Spectrum.

5. Select the Network tab; each device must have a unique IP address within the same subnet; you can follow our example below or configure the IP, Gateway and DNS settings based on your network:

6. Select the Security tab; the Wireless Security should be set to WPA2, and you will need to enter a WPA2 Pre-shared Key; DinoPass is an excellent tool for generating unique passwords like this:

7. Click Finish Setup and then Reboot the radio to apply the configuration:

Subscriber Modules

1. Now log in to the next radio; as with the first one, you will need to configure a new password for security and then select Quick Start -> Start Setup to continue with the configuration.

2. This radio will be a Subscriber Module for the PtMP Network; give the device a unique name so that it is easy to identify its location once installed:

3. Select the Radio tab and make sure the driver mode is set to TDD. Fill in the SSID, Wireless Security, WPA2 Pre-shared Key and Channel Bandwidth fields with the exact details configured on the Access Point. You do not need to select any frequencies in the scan list:

4. Select the Network tab; remember that each device must have a unique IP address within the same subnet, be sure to increment the IP Address for each additional Subscriber Module that is added (e.g. the second one should be

5. Click Finish Setup to apply the configuration.

6. Next select Configuration -> Network in the left-hand column and enable the DHCP Server Below SM option:

7. Finally, save the changes and reboot the radio to complete the configuration:

8. Repeat steps 1-7 for additional Subscriber Modules.

Once you have finished configuring all of the devices, if you log back into the Access Points interface, then you can verify the Subscriber Modules have connected successfully on the Status page: