Planet VCG-1500WG-LTE User Manual page 33

Rule 2: TCP Mode
Rule 3: Data Mode
Rule 4: LCP Mode
No Reboot
and off-line frequently.
Wireless gateway checks destination IP address and port through TCP syn
packet periodically. When the destination IP address device doesn't respond,
wireless gateway considers communication line is disconnected already.
Wireless gateway will release the original link, then dial-up again
automatically, till communication link is smooth. So please make sure the
selected destination address IP server is stable and on; otherwise, gateway is
considered to be off-line, and make gateway on and off-line frequently.
Note: The selected destination IP address server is checking relevant port. If
the selected destination IP address server is not stable or off or without
checking relevant port, gateway is considered to be off-line, and make
gateway on and off-line frequently.
In a certain period of time, if the gateway did not receive any data package,
then it is believed that the communication link disconnected, and it will dial-up
again till communication link is smooth
Gateway checks online through LCP. In a certain period of time, if gateway did
not receive package, it will restart.
Please kindly note that the selected destination IP address server supports
PAP/CHAP verification function in order to use LCP checking. If the selected
destination IP address server is not stable or off or without supporting
PAP/CHAP verification function, gateway will consider dropped, and then it will
be on-line and off-line frequently.
Note:
1. Make sure to select one kind of maintenance in online mode; otherwise,
gateway can't restart after dropped.
2. The input destination address needs to be stable and supply corresponding
services.
3. Keeping Online default is for public network; it needs to re-configure in
special network to avoid dropping frequently.
While the gateway does not connect to Internet, the watchdog function will
think the connection is disconnected and will continue to restart. You can
enable "No Reboot" to disable the watchdog funciton.
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User's Manual of VCG-1500WG-LTE