RLXIC-SG
♦
Intelligent Cellular
Introduction to the RLXIC-SG
RadioLinx Intelligent Cellular Serial Modem for Global GPRS/GSM
User Manual
Page 10 of 136
ProSoft Technology, Inc.
May 29, 2009
3
When your RLXIC-SG has received its IP address from your cellular provider,
a connection to the Internet or the cellular network is also available for a
computer or other device connected directly to the RLXIC-SG.
The RLXIC-SG will perform a
one-to-one
routing for all internet traffic to and
from the computer or other end device. One-to-one means that your RLXIC-SG
will provide a connection for one device to the Internet at a time. In Private Mode,
the RLXIC-SG will provide NAT (Network Address Translation) for the computer
or other end device.
Note
: The RLXIC-SG does not provide advanced routing required by one-to-many (several devices
connected to one port). If you need to have more than one device connected to the Internet
through your RLXIC-SG, you will need to have a router connected to the modem. The modem
would provide the one-to-one connection to the router with the router configured to provide a
broader NAT service to the other devices connected to it.
1.3.2 Dynamic vs. Static IP Addresses
There are two types of addresses on networks: dynamic and static.
Dynamic addresses are assigned on a "need to have" basis. Your RLXIC-SG
might not always receive the same address each time it connects with your
cellular provider.
Static addresses are permanently assigned to a particular account, and will
always be used whenever your RLXIC-SG connects to the Internet. The IP
address will not be given to anyone else.
Most ISPs (cellular included) use dynamic IP addresses rather than static IP
addresses, because it allows them to reuse a smaller number of IP addresses for
a large number of customers. A dynamic IP address is suitable for many
common Internet uses, such as web browsing, looking up data on another
computer system, or other client functions (such as data only being sent out or
only being received after an initial request).
Tip:
If your account with your cellular provider includes a dynamic IP address, and you need a
static IP, please consult your cellular provider Representative for more information about changing
your account for static IP support.
Summary of Contents for RLXIC-SG
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