User guide

Raven EDGE/GPRS for Cingular - User Guide, version 2.31 3
Introduction to Raven EDGE/GPRS
Common Uses for the Raven
If you need to contact your Raven, a device connected to the modem, or a host system using the
modem from the Internet, you need to have a known IP (such as one which is static) or domain
name (an IP address which is converted by a DNS server into a word based name). If you have a
dynamic IP address for your modem, you can use a Dynamic DNS service (such as IP Manager,
page 14) to translate your IP address into to a domain name.
Caution: If you want to connect remotely to your Raven using TCP/IP, the IP
address given to your modem by the network cannot be a private or internal IP
address (such as a custom APNData Link) unless you are on the same network or
inside that network’s firewall (such as with frame relay).
Using Your Raven to Connect to the Internet
In Public Mode, your Raven will pass the IP address from Cingular’s network to your device or
computer. In Private Mode, your modem will assign configured, static local network IP addresses
for the modem and your device.
The modem will perform a on
e-to
-one routing for all internet traffic to and from the computer or
other end device.
If you need to have more than one device connected to the Internet through the modem, you will
need to
have a router connected to the modem. The modem would provide the one-to-one con-
nection to the router with the router
configured to provide a broader NAT service to the other
devices connected to it.
To use your Raven’s serial port to connect to the Internet from your computer, you need to con-
nect the computer directly to the Raven’
s serial port with a
straight-through serial cable and use
Dial-Up Networking (DUN).
The Raven’s rugged construction and cellular connection make it ideal for use in remote and/or
indu
strial locations.
The Raven can be used for telemetry and for more
advanced communication to
the device or
devices behind it.