Accelerated 6310-DX, User Manual

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Intelligent Cellular Access Tech Switching Intelligent Cellular Access Tech Switching
Design Design
Our 63xx-series line of routers provide a configuration settings called Access technology Access technology , which
can be used to set a cellular modem to connect on 4G-only, 3G-only, 2G-only, or all networks.
https://kb.accelerated.com/m/67492/l/819886-lte-troubleshooting-tree#yes_1
However, some roaming sites or locations with intermittent LTE connectivity have run into
issues where the modem gets stuck on a bad radio access technology (rat) and won't bump to a
different rat unless you set the modem to 3G-only or 4G-only.
This is a smarter process for setting a modem to 3G-only or 4G-only. Typically, doing so would
lock the modem to only connect on that particular radio access technology (rat). This could be
bad for sites with intermittent coverage of a particular CNTI or rat, causing the site to lose
connectivity until that particular network is available again.
What this script does is it will set the device to 4G-only; if we get a connection, then life is good.
If we don't connect within 10 minutes (adjustable), then switch to 3G-only. If we connect on 3G,
then stick with that until this script gets executed again. If we still can't connect after 10
minutes, then switch down to 2G. If we still cannot connect after 10 minutes, try all-
technologies and reset the modem.
Config Setup Config Setup
Minimum firmware: Minimum firmware: 18.4.54+
Create a new custom script under System -> Scheduled tasks -> custom scripts System -> Scheduled tasks -> custom scripts , and enter in the
following. Adjust the RRun time un time to the desired time of day you would like to test the inactive
SIM. The suggestion is to run this script once per day during off hours to minimize customer
impact/connectivity.
logexit() {
echo "custom: cellular $1"
accns_log w config "custom: cellular $1"
exit
}
modem_index() {
idx=$(modem idx)
if ! [ "$idx" ]; then
sleep 30
idx=$(modem idx)
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