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PinPoint EDGE/GPRS - User Guide, version 2.32 145
Frequently Asked Questions and Technical Support
It is possible to use a portable battery for your AirLink modem, however, you most likely need to
make the connector from the battery to the modem yourself. The battery also needs to have enough
power to be able to handle the power consumption of the modem.
You can contact AirLink Support for a guide on how to use your AirLink modem with a portable
battery.
The PinPoint’s IP Addresses and Local Networking
On Your Wireless Service Provider’s network, for security reasons, some accounts set up to be
restricted to communication only from other devices on their network, called a Restricted IP or a
Private IP. If you had two modems on Your Wireless Service Provider’s network, they could com
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municate, but your computer, not using Your Wireless Service Provider as an ISP can’t. You could
normally still access the Internet using your PinPoint’s restricted or private IP because the modem
would use a proxy or gateway on Your Wireless Service Provider’s network.
Can I use a portable battery to power my PinPoint ?
Why Can’t I reach my PinPoint from the Internet? What is a Restricted or
Private IP?
However, if you need to be able to contact your PinPoint (or the devices behind it) directly,
instead of a Restricted IP (also called Private IP, Non-Routable IP, or Proxy APN), you will
need to contact Your Wireless Service Provider your cellular provider to get your account
changed to an Unrestricted IP (also called Public IP or Internet APN).
Note: Customized APNs are generally private and non-routable.
What is the difference between Private and Public mode?
When your PinPoint is powered on, ALEOS, acting as a PPP client, negotiates a PPP session with
Your Wireless Service Provider’s network at the conclusion of which it is assigned an IP address
by your cellular provider. How this address is further acted upon by the modem is determined by
Private or Public Mode.
Public Mode (*HOSTPRIVMODE=0):
The IP address assigned by Your Wireless Service Provider is passed on to the devices connected
to the modem.
If there is a computer or device connected to the serial port of your modem, there are actually two
PPP sessions taking place. After your modem receives Your Wireless Service Provider assigned
IP address, a second PPP session is established between your computer or device and the modem
ultimately assigns that IP address to that computer or device connected to the serial port.