"At the end of the day, just know that we're all people on one team (albeit with very different daily responsibilities). Respect each other's time and needs, and the rest will fall into place."

I do a lot of helpdesk. I've found out most of the time there is a huge difference in information availability between support desk and the rest of the company. Support people spend a ton of time and frustration finding out what the hell a client is talking about, who promised them things and where or what the hell the service level agreement is.

I made a lot of (account) managers very very angry by stating well written documentation and procedures should available to the entire support team. It should be a milestone of EVERY project or else there is NO finished project. People should not be held responsible because of lack of supplied information. Especially when they've asked for it a gazillion times.

This is one of the reason these teams hate each other so much in big companies.