ARRIS Consumer Care

SBR-AC1900P: Changing the 5 GHz Wi-Fi Band Channel

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Question

How do I change the 5 GHz Wi-Fi band channel in the SBR-AC1900P?

Answer

When using a wireless connection, interference may occur. One variable may include other Wireless Access Points within the surrounding area using the same wireless channel. In order to mitigate wireless interference, change the Wi-Fi band channel in the SBR-AC1200P by confirming the Wi-Fi band that the affected Wi-Fi clients are connected to then use the Scan Wireless AP tool to select the cleanest available Wi-Fi channel. By default, the SBR-AC1900P is set at 36 channel. This document describes how to change the 5 GHz Wi-Fi channel band.

Changing the 5 GHz Wi-Fi Band Channel

Launch a web browser, such as Internet Explorer, Firefox, or Safari. Enter http://192.168.0.1 into the address box, and press the Enter key. The Login page will appear.

NOTE: By default the LAN IP address is 192.168.0.1. If the default address has been changed, enter the custom address in the address box.
On the Login page, enter admin in the Username field.
Enter password in the Password field.
Click the Login button. The Home page will appear.
Move the mouse-cursor over Wireless on the top menu, and click the Access Control link from the drop-down sub-menu. The Wireless - Access Control page will appear.
On the Wireless - Access Control page, select the 5GHz tab.
On the very bottom of the page, verify if there is any device listed that is experiencing the Wi-Fi intermittent connectivity issues.

NOTE: If there are no 5 GHz devices listed, please refer to article # 16011 - SBR-AC1900P: Changing the 2.4 GHz Wi-Fi Band Channel for 2.4 GHz devices.
Move the mouse-cursor over Wireless on the top menu and click the 802.11 Radio link on the sub-menu. The 802.11 Radio page will appear.

NOTE: It is recommended to set the 5 GHz Wi-Fi Band Channel to Auto. To set the channel to Auto click here to skip to step 13. To use the Scan Wireless APs tool to determine the channel proceed to the next step.
Select the 5 GHz tab and click the Scan Wireless APs button. Nearby Wireless Access Points pop-up window with a list of nearby wireless access points appears.

NOTE: Pressing the Scan Wireless APs button executes the tool and will pop-up another window displaying the scan results. Be sure to disable Pop-up blocker on the browser to allow the tool to work.
On the Nearby Wireless Access Points pop-up window, determine the cleanest channel to use by verifying which channel is used the least or not used at all.

NOTE: In the example below Channel 36 is highly used, while Channel 157 is moderately used. The cleanest channel available is Channel 40 or channels not in use.
Once the channel has been determined, close the Pop-up window.
Leave the default setting of 80 MHz on the Bandwidth drop-down menu to increase the amount of data that the Wi-Fi network can carry.

NOTE: Sideband setting is only available when the Bandwidth is set to 40 MHz.

Bandwidth Sideband Channels
80 MHz N/A Auto, 36, 40, 44, 48, 149, 153, 157, 161
40 MHz Lower Auto, 36, 44, 149, 157
40 MHz Upper Auto, 40, 48, 153, 161
20 MHz N/A Auto, 36, 40, 44, 48, 149, 153, 157, 161, 165
Select a channel from the Channel drop-down menu other than what is displayed as Current.

NOTE: It is recommended to leave the Channel setting at Auto and restart the SBR-AC1900P. The cleanest Wi-Fi channel will be selected upon restart. Keep in mind that the connected Wi-Fi clients temporary lose Internet connection when the SBR-AC1900P is restarting.
Click the Apply button.

NOTE: The connected Wi-Fi clients will temporary lose Internet connection and will reconnect.