Job definition for Marketing Manager

When I solidified my job as Marketing Manager last year, I was given the luxury of writing my own job description. In my mind, I see some clear boundaries for what are my responsibilities, as well as areas where I'll be admittedly 'picking up the slack', such as product management.

But it is interesting, especially after my trip to Japan, how others in the organization perceive my title to mean. I actually started a list of people and what they saw my job as.

• Conduit to sales and customers
• Sales data analysis
• Sales support
• Advertising
• Vision
• Brand
• Product/market expert

Maybe I need to be all these things, but its hard to do all of them to the full expectation of others. At the very least, I've now prepared myself when dealing with certain people regarding their agenda for me. It will make me a better listener, and a better manager.