User Manual
Advanced Console Server & RIM Gateway User Manual 107
threshold number of consecutive attempts fail, the service will cause the unit to reboot. This can be used to force a clean
restart of the modem and its services to work around any carrier issues.
5.7 Cellular Operation
When set up as a console server the 3G cellular modem can be set up to connect to the carrier in either:
- Failover mode. In this case a dial-out cellular connection is only established in event of a ping failure
- OoB mode. In this mode the dial-out connection to the carrier cellular network is always on - awaiting any incoming
access (from a remote site wanting to access to the console server or attached serial consoles/network hosts)
- Cellular router mode. Again in this case the dial-out connection to the carrier cellular network is always on, but IP traffic
is routed between the cellular connected network and the console server’s local network ports
- Circuit Switched Data (CSD) mode. In this dial-in mode the cellular modem can receive incoming calls from remote
modems who dial a special Data Terminating number
5.7.1 OoB access set up
Out-of-band access is enabled by default and the cellular modem connection is always on. However to be directly
accessed the console server needs to have a Public IP address and it must not have SSH access firewalled.
Almost all carriers offer corporate mobile data service/plans with a Public (static or dynamic) IP address. These plans
often have a service fee attached.
 If you have such a static Public IP address plan you can also now try accessing the console server using the
Public IP Address provided by the carrier. However by default only HTTPS and SSH access is enabled on the
OoB connection. So you can browse to the console server, but you cannot ping it
 If you have a dynamic Public IP address plan then a DDNS service will need to be configured to enable the
remote administrator to initiate incoming access. Once this is done you can then also try accessing the console
server using the allocated domain name
By default most providers offer a consumer grade service which provides dynamic Private IP address assignments to 3G
devices. This IP address is not visible across the Internet but generally it is adequate for home and general business use.
 With such a plan the Failover& Out-of-Band tab on the Status: Statistics shows will identify that your carrier
has allocated you a Private IP Address (i.e. in the range 10.0.0.0 – 10.255.255.255, 172.16.0.0 – 172.31.255.255
or 192.168.0.0 – 192.168.255.255)
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