Here's a link to his ConnectOne example.
Pros: The ConnectOne modules have a complete set of internet protocols and all the coding is similar to that in the mackrackit example. Configuration can be done via the ethernet or serial connection. The modules do all of the heavy lifting. IMO, these are the easiest to use.
Drawbacks: Their modules take up more real estate than some others and mounting them to a mainboard is problematic in some cases. They do not fit breadboards. The code burden of the AT commands can add up quickly.
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