AddSecure IRIS-4 Technical Reference Manual page 36

You can view each network technology by clicking through them with the button near the top left corner.
For a reliable cellular connection, there should be at least two base stations with
signal strength (CSQ) of ten or more for the network to be used. If the signal
strength is below that, try to reposition the antenna or the terminal or swap the
current antenna for a high gain antenna. Then run the network scan again to
check signal strength.
APN
This option lets you enter the cellular Access Point Name (APN) for the SIM card used.
Username
If no username is required, leave it blank. Otherwise, set the cellular username for the SIM card.
Password
If no password is required, leave it blank. Otherwise set the cellular password for the SIM card.
SIM PIN
If the SIM card used has a Pin number, enter it here. If it does not, leave it blank.
Call barring
To prevent any possibility of blocking the cellular communication paths,
incoming calls can be barred.
SMS transport
The SMS transport mode can be set to Cellular Packet Switched (CPS) for use
with SIM cards that support 4G but do not support sending SMS messages over
4G. Otherwise, click IP Multimedia Core Network Subsystem (IMS).
If you change this setting, you must power down the terminal and then restart it.
Mode
Allows you to select the desired cellular technology for the terminal. For most circumstances, it is
recommended to use the Auto setting.
The options available are:
Auto
Best signal
4G
4G preferred
2G + 3G
3G
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The terminal will automatically select the technology depending on the SIM card
configuration and the network operator.
The technology with the highest signal strength will automatically be selected.
Locked to 4G only. Note: that if there is no 4G available, cellular communication will
not be possible.
4G is selected if available and above the set minimum signal strength. If there is no
4G available the terminal will revert to 3G or 2G, if available.
4G will not be used. Note: that if there is no 2G or 3G available, cellular
communication will not be possible.
Locked to 3G only. Note: If there is no 3G available, cellular communication will not
be possible.
IRIS-4 Technical Reference Manual 20/03/2025