Figure: 21 - Verify Gprs Activation - Enfora MT 3000 User Manual

If AT$NETIP returns all zeros, send the following command: AT$CGEER<CR>
There are three common responses:
$CGEER: no PDP reject cause (Everything should be working OK)
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$CGEER: requested service option not subscribed (APN is incorrect or SIM has not been enabled for
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data mode.)
$CGEER: user authentication failed (username and/or password is incorrect.)
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Configure the device to access the Enfora Server.
To configure the device for server interoperability, several things have to be addressed:
Most GPRS configurations are Mobile Originate only. The mobile device must initiate a conversation
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with a remote server before the remote server can talk to the device.
IP addresses are dynamically assigned and can change.
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Some IP addresses are NAT and are non-routable IP addresses.
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These issues are addressed with the following configuration commands.
The examples will use the following information:
Figure: 21 - Verify GPRS Activation
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