AT commands

I am a contract developer who was given a Raven XE H2223E-C to use in a data collection project. I intend to use AT commands via the built-in USB port. I can tell that the unit is functional in that I used it with my laptop to view a web site. However, I find the documentation on this product concerning AT commands to be rather inadequate. There are no action commands described whatsoever. How can I send an email with this thing? It seems to respond to basic AT interrogation commands, but it would help if I could send it a command that would return the AT commands that it considers legal.

Is that a possibility for this unit?

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