Finally, I suggest you never refer to your communication space as a closet. While there are standards that dictate how large a Distribution Frame should be based on the projected service area, it is my experience that if you ask an architect for a closet, you get a closet. Ask for a room, and you'll get a room.

2. Communicate openly and frequently with all involved

It should be clear that it is simply not enough to query the end users what their network requirements are when designing a network. Yes, it is important to know this to determine the type of equipment to be placed in each Distribution Frame, but it is also important to look at what is needed by you as the network administrator.

Assuming that a router with ample capacity during the project's design phase will have the same capacity at project completion 18 months later is playing with fire. Work with the core network group to identify and reserve the interface at the beginning of the planning process, or, if you also administer the core, do it yourself. Requesting funds for additional equipment late in the project is at least eMBarrassing and usually much worse.

Find out everything that will run on your network. RemeMBer that "network" may not refer to only the data network itself, depending on your particular situation. VOIP and fire alarm services are examples of services you may need to factor into your design.