I have really enjoyed working with Emontx and I have even made advances in its communication. I was able to come up with this.
A emontx version with GSM and Ethernet capabilities packaged into one. I would like to release under open source through github
It includes images of the board and schematic as well as the code. I will continue to update this with eagle files and better versions of the code. Currently the code has only gprs as connectivity but I will add, sms and ethernet capabilities to it very soon.
Edit - changed thread title to avoid confusion. BT - Moderator