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Guys. I know there are wifi sip phones out there but I have a question, are any of these phones "anti explosive"? By that I mean, there are certain regulations about phones or cel phones that are not recommended to operate in environments like gas stations due to sparks and the chance of ingiting gas fumes. Are there any wifi sip phones out here that have complaince with regulations to operate in hazardous environments like Oil Platforms, etc? phones denominated "anti explosive" or something?