User guide

ALEOS 4.3.4 Software Configuration User Guide
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Originated). However, if you need to contact the AirLink device directly, a device
connected to the AirLink device, or a host system using your AirLink device (also
called Mobile Terminated), a dynamic IP will not give you a reliable address to
contact (since it may have changed since the last time it was assigned).
Domain names are often only connected to static IP addresses because of the
way most domain name (DNS) servers are set-up. Dynamic DNS servers require
notification of IP Address changes so they can update their DNS records and link
a dynamic IP address to the correct name.
• Dynamic IP addresses are granted only when your AirLink device is
connected and can change each time the gateway reconnects to the network.
• Static IP addresses are granted the same address every time your AirLink
device is connected and are not in use when your gateway is not connected.
Since many cellular providers, like wire-based ISPs, do not offer static IP
addresses or static address accounts (which can cost a premium as opposed to.
dynamic accounts), Sierra Wireless AirLink Solutions developed IP Manager. IP
Manager works with a Dynamic DNS server to receive notification from Sierra
Wireless AirLink devices to translate the dynamic IP address to a fully qualified
domain name. Thus, you can contact your AirLink device directly from the Internet
using a domain name.
Figure 8-4: ACEmanager: Services > Dynamic DNS Service (partial screen)
Field Description
Service Allows you to select a Dynamic DNS Mobile Network Operator.
Options are:
• Disable (default)
• dyndns.org
• noip.org
• ods.org
• regfish.com
• tzo.com
• IP Manager