D-Link DSL-2750U User Manual page 116

DSL-2750U Wireless ADSL2+ Router with 3G/LTE/Ethernet WAN Support
and USB Port
User Manual
Parameter
Number of inspections
of active connection
Number of inspections
of inactive connection
When all needed settings are configured, click the APPLY button.
A number of requests that will be sent in order to analyze the status
of the main connection when the connection is active (the router
uses the main connection as a default gateway).
A number of requests that will be sent in order to analyze the status
of the main connection when the connection is inactive (the router
uses the reserve connection as a default gateway).
Page 116 of 210
Configuring via Web-based Interface
Description