User`s guide

Configuration from the Web interface
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 Ping Test: Enables or disables the use of “ping” (ICMP) as a test to verify the integrity
of the mobile connection. The test is successful if a valid ping reply is received in
response to the ping request sent. The ping test actually sends up to 30 ping requests, one
per second, to test the link. When a valid reply is received, the test completes
successfully and immediately. If a reply is received for the first request sent, there is no
need to send the other two requests.
Two destination hosts may be configured for this test. If the first host fails to reply to all
three ping requests, the same test is attempted to the second host. If neither host replies
to any of the ping requests sent, the test fails. The primary and secondary addresses may
be either IP addresses or fully qualified domain names.
– Primary Address: First host to test.
– Secondary Address: Second host to test (if the first host fails).
 TCP Connection Test: Enables or disables the creation of a new TCP connection as a
test to verify the integrity of the mobile connection. The test is successful if a TCP
connection is established to a specified remote host and port number. If the remote host
actively refuses the connection request, the test is considered a failure. The TCP
connection test waits up to 30 seconds for the connection to be established or refused.
When the TCP connection is established, the test completes successfully, and the TCP
connection is closed immediately.
Two destination hosts may be configured for this test. If the first host fails to establish
(or refuse) the TCP connection, the same test is attempted to the second host. If neither
host successfully establishes (or refuses) the TCP connection, the test fails. The primary
and secondary addresses may be either IP addresses or fully qualified domain names.
– TCP Port: The TCP port number to connect to on the remote host. The default is 80.
 DNS Lookup Test: Enables or disables the use of a Domain Name Server (DNS) lookup
as a test to verify the integrity of the mobile connection. The test is successful if a valid
reply is received from a DNS server. Typically, this means the hostname is successfully
“resolved” to an IP address by a DNS server. But even a reply such as “not found” or
“name does not exist” is acceptable as a successful test result, since that demonstrates
successful two-way communication over the mobile connection. When a valid reply is
received, the test completes successfully and immediately.
The DNS servers used in this test for the hostname lookup, are the primary and
secondary DNS servers obtained from the mobile network when the mobile PPP
connection is first established. These addresses can be viewed on the
Administration > Mobile Status page.
 iDigi Connection Test: Enables or disables verification of the iDigi connection. The
test is successful if a connection can be established to the configured iDigi server, and if
keep-alive messages can be exchanged with the server. The test fails if a connection
cannot be established, the connection is closed, or if keep-alive messages stop. The
iDigi server is configured on the Configuration/iDigi Connectivity page.