Are these what you're talking about? Can they be bought on the market somewhere or do I need a service plan? Invalid Link Removed
AT&T has a few phones that are PTT (Push To Talk), construction grade. I think the Samsung Rugby is one, and there's a Motorola out there I used to own before killing it.
They aren't multimedia phones to the extent most would like but they do get your calls through and you can hear the speaker phone above average road noise, unlike most consumer-grade devices. They won't scratch up or break when dropped. They are deceptively expensive and cosmetically unattractive, which is why most people complain about the reception on their sleek, paper-thin phones.