D-Link DSR-150 [78/274] Tuning radio specific settings

Unified Services Router User Manual

4.4 Tuning Radio Specific Settings

Setup > Wireless Settings > Radio Settings

The Radio Settings page lets you configure the channels and power levels available for the AP‘s

enabled on the DSR. The router has a dual band 802.11n radio, meaning either 2.4 GHz or 5 GHz

frequency of operation can be selected (not concurrently though). Based on the selected operating

frequency, the mode selection will let you define whether legacy connections or only 802.11n

connections (or both) are accepted on configured APs.

Figure 49: Radio card configuration options

The ratified 802.11n support on this radio requires selecting the appropriate broadcast (NA or NG

etc.) mode, and then defining the channel spacing and control side band for 802.11n traffic. The

default settings are appropriate for most networks. For example, changing the channel spacing to 40

MHz can improve bandwidth at the expense of supporting earlier 802.11n clients.

The available transmission channels are governed by regulatory constraints based on the region

setting of the router. The maximum transmission power is similarly governed by regulatory limits;

you have the option to decrease from the default maximum to reduce the signal strength of traffic out

of the radio.

4.5 WMM

Setup > Wireless Settings > WMM

Wi-Fi Multimedia (WMM) provides basic Quality of service (QoS) features to IEEE 802.11 networks.

WMM prioritizes traffic according to four Access Categories (AC) - voice, video, best effort, and

background.