ZyXEL Communications Corporation EMG6765-Q10A User Manual

 Chapter 9 Wireless LAN

EMG6765-Q10A User’s Guide

Channel Selection

Set the operating frequency/channel depending on your particular region. 

Select a channel from the drop-down list box. The options vary depending on the frequency 
band and the country you are in.

Refer to the Connection Wizard chapter for more information on channels. This option is only 
available if Network Search is disabled. 

Network Search

Select this check box for the EMG6765-Q10A to automatically choose the channel with the 
least interference. Deselect this check box if you wish to manually select the channel using 
the Channel Selection field. Click Scan channel so the EMG6765-Q10A can scan for an 
available channel.

Operating 
Channel 

This displays the channel the EMG6765-Q10A is currently using.

Channel Width

Select the wireless channel width used by EMG6765-Q10A.

A standard 20 MHz channel offers transfer speeds of up to 144Mbps (2.4GHz) or 217Mbps 
(5GHZ) whereas a 40MHz channel uses two standard channels and offers speeds of up to 
300Mbps (2.4GHz) or 450Mbps (5GHZ). An IEEE 802.11ac-specific 80MHz channel offers speeds 
of up to 1.3Gbps.

Because not all devices support 40 MHz and/or 80 MHz channels, select Auto 20/40 MHz or 
Auto 20/40/80 MHz to allow the EMG6765-Q10A to adjust the channel bandwidth 
automatically.

40 MHz (channel bonding or dual channel) bonds two adjacent radio channels to increase 
throughput. A 80 MHz channel consists of two adjacent 40 MHz channels. The wireless clients 
must also support 40 MHz or 80 MHz. It is often better to use the 20 MHz setting in a location 
where the environment hinders the wireless signal. 

Select 20 MHz if you want to lessen radio interference with other wireless devices in your 
neighborhood or the wireless clients do not support channel bonding.

802.11 Mode

If you are in the Wireless LAN 2.4G > General screen, you can select from the following:

• 802.11b: allows either IEEE 802.11b or IEEE 802.11g compliant WLAN devices to associate 

with the EMG6765-Q10A. In this mode, all wireless devices can only transmit at the data 

rates supported by IEEE 802.11b.

• 802.11g: allows IEEE 802.11g compliant WLAN devices to associate with the Device. IEEE 

802.11b compliant WLAN devices can associate with the EMG6765-Q10A only when they 

use the short preamble type.

• 802.11bg: allows either IEEE 802.11b or IEEE 802.11g compliant WLAN devices to associate 

with the EMG6765-Q10A. The EMG6765-Q10A adjusts the transmission rate automatically 

according to the wireless standard supported by the wireless devices.

• 802.11n: allows IEEE 802.11n compliant WLAN devices to associate with the EMG6765-

Q10A. This can increase transmission rates, although IEEE 802.11b or IEEE 802.11g clients will 

not be able to connect to the EMG6765-Q10A. 

• 802.11gn: allows either IEEE 802.11g or IEEE 802.11n compliant WLAN devices to associate 

with the EMG6765-Q10A. The transmission rate of your EMG6765-Q10A might be reduced.

• 802.11 bgn: allows IEEE802.11b, IEEE802.11g and IEEE802.11n compliant WLAN devices to 

associate with the EMG6765-Q10A. The transmission rate of your EMG6765-Q10A might be 

reduced.

If you are in the Wireless LAN 5G > General screen, you can select from the following:

• 802.11a: allows only IEEE 802.11a compliant WLAN devices to associate with the EMG6765-

Q10A.

• 802.11a/an: allows both IEEE802.11n and IEEE802.11a compliant WLAN devices to 

associate with the EMG6765-Q10A. The transmission rate of your EMG6765-Q10A might be 

reduced.

• 802.11a/an/ac: allows both IEEE802.11a, IEEE802.11n and IEEE802.11ac compliant WLAN 

devices to associate with the EMG6765-Q10A. The transmission rate of your EMG6765-

Q10A might be reduced.

Security

Table 18   Network > Wireless LAN 2.4G/5G > General (continued)