DIR-620S  Wireless N300 Router with 3G/LTE Support and
USB Port
User Manual
Configuring via Web-based Interface
USSD
On the USB Modem / Modem name /USSD page, you can send a USSD command.
11
USSD   (Unstructured   Supplementary   Service   Data)   is   a   technology   which   provides  real-time 
message   exchange   between   a   subscriber   and   a  mobile   operator's   special   application.  USSD 
commands are often used to check the SIM card balance, receive data on the rate plan or service 
packets, etc.
Figure 139. The USB Modem / Modem name / USSD page.
In the Number field, enter a USSD command and click the SEND button. After a while, the results 
will be displayed in the Response field.
11 Contact your operator to get information on USSD commands and their functions.
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