C613-22132-00 REV A
What does a 5G cellular modem do?
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5G Mobile Broadband UTM Firewall
How does this feature work?
When you use the 5G modem for mobile communication the following applies:
1. Only Micro SIMS are supported (15mm x 12mm).
We do not recommend using Mini or Nano SIM cards because the SIM adapter that they require
can cause problems if the SIM card detaches inside a slot.
Make sure that you insert the SIM card correctly:
The card must be the right size for the slot.
Check that the SIM card is the right way up. The gold contacts must be facing downwards.
Make sure the SIM card is inserted the right way around. The corner cut-out should be
inserted first.
The gold contact area of the SIM card must be clean and undamaged.
Make sure there are no foreign objects in the SIM card slot.
2. You must attach the Access Point Name (APN) profile to the ‘
wwan0
’ interface.
See
"Attach the APN profile to the ‘wwan0’ interface and SIM slot" on page 10
.
An APN profile must have a minimum configuration that includes the APN Name. The name
field accepts any string. Some carriers do not require any configuration and will allow you to
connect to their network as long as you have a valid SIM card.
If an APN profile has a username configured, it must have a password and authentication
method configured.
An APN profile PDP (Packet Data Protocol) type defaults to both IPv4 and IPv6. Some carriers
only support IPv4.
3. The SIM slots are disabled by default.
This is a method of preventing the WWAN interface from automatically requesting a connection
when it is a factory clean device. For example, some carriers require only a valid SIM to connect
to the network whereas other carriers are stricter.
4. The ‘
wwan1
’ interface is reserved for external USB modems.
For more information about using USB cellular modems to connect to 3G and 4G,
see
USB Cellular Modem Feature Overview and Configuration Guide
.
The ‘
wwan0
’ interface automatically gets assigned a IP address from the carrier. The speed and
performance of the WWAN interface is limited to the performance of the local carrier (always less
than 1 Gig).
The WWAN interface may go down if the SIM card runs out of credit or if the carrier network goes
down. A failover will occur between the SIM slots when there is a backup SIM card in the
neighboring slot. You can change the time interval using the command
sim failover-interval
. During
the failover the WWAN interface looses it’s IP address and a new request occurs from the backup
SIM.
