Backup Apn - Sierra Wireless AirLink ES440 User Manual

Rev 1 Nov.14
Be careful when entering the PUK. You have a limited number of attempts to
enter the correct PUK (generally 10) before the SIM card is disabled. If the
PUK does not unblock the SIM PIN after the first few attempts, contact your
Mobile Network Operator.
If you have exhausted all the alloted attempts to enter the correct PUK, the
Mobile Network Operator may give you a new SIM card, or a new code to
enable your existing SIM card. AirLink products do not support this type of
code. To enter the code:
a. Remove the SIM card from your AirLink device (following the instructions
in the AirLink Device Hardware User Guide) and insert it in a cell phone
that accommodates a MiniSIM (2FF) card.
b. Enter a new code provided by the Mobile Network Operator and then
return the SIM card to the AirLink device.

Backup APN

This feature enables you to configure a backup APN to be used as a backup
network connection mechanism, only if the primary APN is not available. When it
is enabled, the device connects to the backup APN only if it is unable to connect
to the primary APN.
Note: Switching to the backup APN can take five minutes or more, depending on the
device. If the device is always connecting to the backup APN, check the primary APN to
ensure that it is configured correctly.
To configure a backup APN:
1. Go to WAN/Cellular > APN Backup.
Figure 4-4: ACEmanager: WAN/Cellular > APN Backup
2. Enter the backup APN.
WAN/Cellular Configuration
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