DSL-2750U User Manual
28 
Dial on demand
: Within the preset time, if the modem does not detect data 
flow , the modem automatically stops the 3G connection. Once it detects 
data flow (e.g. access to a webpage), the modem restarts the 3G dialup. 
Dial Delay (in sec.)
: The 3G delays dial after the DSL is disconnected. 
Default WAN Connection Select
: You can select DSL or 3G from the 
drop-down list. 
WAN backup mechanism
: The 3G connection is used as backup for the 
DSL connection. 
–
DSL
: If the DSL is disconnected, the 3G starts to dial. 
–
IP connectivity
: If the system fails to ping the specified IP 
address, the 3G starts to dial. 
After adding the settings, click the 
Apply/Save
button to save the settings. 
You may also click the 
auto setting
button to automatically configure the 3G 
connection. 
After clicking the 
Apply/Save
button, the settings will take effect. 
Note: 
When there is no DSL WAN connection, insert the 3G network card, and the 
system will perform a dial-up automatically. If the DSL WAN connection and the 
3G connection coexist, the DSL WAN connection takes priority over the 3G 
connection. When the DSL WAN connection starts to perform a dial-up, the 3G 
connection will be disconnected. If the DSL WAN connection has been 
established, you may manually perform a 3G dial-up, and then the DSL WAN 
connection will be disconnected. 
4.2.4 
Wireless Connection 
This section includes the wireless connection setup wizard and WPS setup wizard. 
There are two ways to setup your wireless connection. You can use the 
Wireless 
Connection Setup Wizard 
or you can manually configure the connection. 
Choose
Setup
> 
Wireless Connection
. The 
Wireless Connection
page shown in 
the following figure appears. 
 19216811.live
19216811.live