41D-Link DSL-2750B Wireless N300 ADSL2+ Modem Router User Manual
Section 3 - Conguration
Timeout: Specify a period of inactivity after which an established 3G
session will be ended. Set to zero or choose Auto in Reconnect
Mode to disable this feature.
Period time: Specify a period for DSL or Ethernet uplink to be disconnected.
Fail Tolerance: Specify the number of failures before using the backup
connection.