ETIC RAS-E, User Manual, Page: 69 / 132

ADVANCED SET-UP
Machine Access Box RAS
DOC_DEV_RAS_User guide_A
Page 69
« Cellular network » parametr :
The router RAS is supposed to connect to the best cellular relay available.
However, in particular situations, it may be useful to force the router RAS to use a particular service.
That parameter gives the choice to select either the LTE 4G service, or the UMTS 3G service or the GPRS-
EDGE service.
The default value is “AUTO”; in that case, the router RAS selects the best available connection.
Cellular IP interface set-up
«Login» & « Password» parameters :
Enter the login and password of the subscription.
Remark : That parameters are generally not required.
« Obtain an P address automatically » checkbox :
The IP address of the cellular interface of the router RAS is usually assigned by the service provider over the
air.
Otherwise, enter the IP address assigned to the cellular interface of the router.
« Obtain the DNS server IP address automatically » checkbox:
Leave that checkbox selected if the DNS servers IP address are assigned by a DHCP server.
Otherwise unselect that checkbox and enter the IP addresses of the DNS servers.
« NAT» checkbox :
If that option is selected, the source IP address of any IP frame coming from a device connected to the LAN
interface and routed to the WAN interface , is replaced by the router WAN IP address.
Remark : Select that checkbox if a device of the LAN interface needs to set a connection with a device
connected to the Internet (FTP server …).
1.3.2 Using the SIM cards 1 and 2
Each SIM card can be associated to two different mobiles data services.
In the subsequent text, the cellular service associated to the SIM card 1 is referred to as Network 1 and the
cellular service associated to the SIM card 2 as the Network 2.
The network 1 is first service tested at power-up.
If the Network 1 remains in failure during the period of time T1, the router switches to the network 2.
If the Network 2 is functioning properly, the router uses that cellular network at least during the period of
time T3.
On expiry of that period, the router switches back to the network 1 and checks if it is available. If it is not the
router goes on using the Network 2.
At any time, If the network 2 does not work correctly during the period of time T2, the router switches to
Network 1.
The periods of time T1, T2 and 3 can be set.
We advise not to select too small values of the T1, T2 and T3 parameters. :