Configuration Settings
Rev 4 May.17
71
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Preferred Radio Access Mode
: the card mode through which the oMG
will try to connect to the network. The supported modes vary by card type
based on which networks they can connect to and which settings are
available. There are three possible mode options which may be labeled
differently depending on the card as follows:
3G Only / WCDMA only
: the oMG will only try to establish a connection
to a 3G network (i.e. it will not try to connect to a 4G network).
4G Only / LTE-only
: the oMG will only try to establish a connection to a
4G/LTE network (i.e. it will not try to connect to a 3G network).
Automatic / 4G with 3G fallback
: the oMG will try to connect to the best
network (i.e. it will try to connect to 4G/LTE if possible, and will then
attempt to connect to 3G if that fails).
LTE Disabled
: the oMG will prevent a connection to a 4G/LTE network
thus enforcing a 3G connection.
•
Enable Link Down Recovery/Recovery Interval
: when enabled, causes the
system to reboot when the link goes down for a period of time that exceeds
the number of seconds specified in Recovery Interval. Note that when
enabled, this option works independently for each link (i.e. if one link
connection drops and exceeds the timeout period, the system will be
rebooted regardless of the connection status for other links). This option is
available for links which use PPP and is disabled by default. The default
Recovery interval is 600 seconds; the minimum value is 300 seconds.
•
Network Carrier
: if Automatic is selected, the oMG will read factory param-
eters from the modem to best determine how to connect to the selected
network Mobile Network Operator. If a specific Mobile Network Operator is
selected then the oMG will attempt to adjust the configuration on the modem
accordingly. The Preferred Mode field will also be adjusted to allow/disallow
selection of the LTE Disabled option accordingly.
A.3.2 WiFi Link Configuration Settings
•
Enable Broadcast Probe
: when enabled, a broadcast probe request is sent
to all access points in the area. A probe request is sent by the client
requesting information from either a specific access point or all access points
in the area
•
Association Settling Period
: when the WiFi module has associated with an
access point, this value specifies a delay before it will be eligible for selection
to carry default route traffic. The delay is intended to ensure that association
to an AP with a marginal signal does not result in the link being selected for
bearing default route traffic only to find it has disconnected.
•
Disassociation Settling Period
: this value specifies a delay before a disso-
ciation which causes the default route to be assigned to another available
link. The delay is intended to allow short interruptions to the WiFi signal to be
tolerated without provoking a link switch.
•
Background Scanning Interval
: before associating successfully, a scan is
continuously executed to look for access points with the appropriate creden-
tials. Once associated, a background scan is executed on the interval defined
by this parameter. The background scan allows the oMG to detect nearby
eligible APs. This value should be set moderately (e.g. 60 seconds) when in a