D-Link DWR-921 User Manual

DWR-921 4G LTE Router
User Manual
Configuring via Web-based Interface
Parameters of the Access Categories are defined for both the router itself (in the Access Point
section) and wireless devices connected to it (in the Station section).
To edit the parameters of an Access Category, left-click the relevant line. In the opened window,
change the needed parameters.
Figure 126. The window for changing parameters of the WMM function.
Parameter Description
AIFSN
Arbitrary Inter-Frame Space Number. This parameter influences
time delays for the relevant Access Category. The lower the value,
the higher is the Access Category priority.
CWMin / CWMax
Contention Window Minimum/Contention Window Maximum. Both
fields influence time delays for the relevant Access Category. The
CWMax field value should not be lower, than the CWMin field
value. The lower the difference between the CWMax field value
and the CWMin field value, the higher is the Access Category
priority.
TXOP
Transmission Opportunity. The higher the value, the higher is the
Access Category priority.
ACM
Admission Control Mandatory.
If the switch is moved to the right, the device cannot use the
relevant Access Category.
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D-Link DWR-921 Specifications

General

VPN support	L2TP/PPTP/IPSEC
Ethernet LAN	Yes
Cabling technology	10/100Base-T(X)
Networking standards	IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.3, IEEE 802.3u
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
Wi-Fi band	No
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Top Wi-Fi standard	Wi-Fi 4 (802.11n)
WLAN data transfer rate (max)	150 Mbit/s
Ethernet LAN (RJ-45) ports	4
DHCP client	-
Antennas quantity	2
Security algorithms	128-bit WEP, 64-bit WEP, WPA, WPA2
Certification	CE, Wi-Fi
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 90 %
Product color	Black, White
LED indicators	3G, LAN, Power, WAN, WLAN

Weight and Dimensions

Depth	111.5 mm
Width	190 mm
Height	23.5 mm
Weight	500 g