User guide

Enfora GSM1308 and
GSM1318
Quad-Band Spider®
SA-G+
User Guide P a g e 24 Revision: 1.03
If AT$NETIP returns all zeros, send the following command: AT$CGEER<CR>
There are three common responses:
• $CGEER: no PDP reject cause (Everything should be working OK)
• $CGEER: requested service option not subscribed (APN is incorrect or SIM has
not been enabled for data mode.)
• $CGEER: user authentication failed (username and/or password is incorrect.)
•
Configure the SA-G+ to access the Enfora Server.
Note: To configure the SA-G+ for server interoperability, several
things have to be addressed.
• Most GPRS configurations are Mobile Originate only. The mobile SA-G+ must
initiate a conversation with a remote server before the remote server can talk to
the SA-G+.
• IP addresses are dynamically assigned and can change.
• Some IP addresses are NAT and are non-routable IP addresses.
These issues are addressed with the following configuration commands.
The examples will use the following information:
• Modem ID/name = “SAG_Test”
• Remote Server DNS address = apitest.enfora.com
• Remote Server IP port = 1721
Give the SA-G+ a unique name.
• Send the following command: AT$MDMID=”SAG_Test” This command,
combined with the wakeup message, will allow the server to associate a Public
IP address with a specific SA-G+ and create a window of opportunity where the
server can send commands to the SA-G+