ProSoft Technology RLXIC-SG, User Manual, Page: 65 / 136

Data Communication and Host Modes RLXIC-SG ♦ Intelligent Cellular
User Manual RadioLinx Intelligent Cellular Serial Modem for Global GPRS/GSM
ProSoft Technology, Inc.
Page 65 of 136
May 29, 2009
7.5 Keepalive
Keepalive is used to test the connection to the cellular network by pinging an IP
address after a specified period of inactivity. Keepalive is only recommended for
users who have a remote terminated modem that infrequently communicates to
the network or if you have experienced issues over time where the modem can
no longer be reached remotely.
When Keepalive pings the IP address, an acknowledgement indicates there is an
active connection to the network. If the RLXIC-SG does not receive a response
from the IP address, it will make additional attempts according to a backoff
algorithm before determining the Internet connection is not functioning properly. If
it determines the connection is not functioning, the modem will then attempt to
reconnect to your cellular provider to reestablish IP connectivity.
7.5.1 Configuring Keepalive
In AceManager, the Keepalive settings are part of the O
THER
group.
ƒ
*IPPING sets the interval, in minutes, you want Keepalive to test the network
connection. To disable Keepalive, set *IPPING to 0 (default setting).
Note: The minimum time which can be set for Keepalive is fifteen minutes. If you set *IPPING for a
value less than the minimum, the minimum value will be set.
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*IPPINGADDR sets the IP address you want to use for the connection test.
Caution: If *IPPINGADDR is left blank or is set to an invalid IP address (example, an IP which is
unreachable or one which is not a valid IP address), modem performance will be adversely
affected.