Any communication on the run should be considered high priority. The reason is that a person has to stop what they are doing and respond to that request, just as answering the phone in your office. Therefore, when deciding on a wireless system (email, network access, and conferenceing), find out if it fits in your current business model. Yes, it is a common form of communication, but if your time is spent answering low priority or unimportant ugrent requests, the productivity ratio decreases. Does your team really need to answer that in the next 30 minutes? For the purpose of my answer, let's say yes. Let's also say your in an airport since that is one of the popular areas for using wireless technologies. If your waiting for your plane, then you have a virtual desk where you can get something done rather than hanging out at the frequent flyer club (or maybe your talented to do both). Either way, that is time well spent. However, if you are always on the run from airport to airport and barely making a flight, then wireless becomes meaningless outside the cell phone. You can't stop to answer and you can't use it on the plane until it takes off. Even then, you better have a thin notebook or PCS celluar service with Internet because there isn't much room on a flight unless you book a business or first class ticket.
One way of dealing with wireless communications (voice, fax, email, Internet) is to have a response agreement: how long will it take for you to respond to the request? If it is more than 30 minutes, then don't make a team wireless. Someone can easily get a fax or a phone call over to the client within 30 minutes besides a remote team. Also, give wireless communication to those who have demonstrated good organizational skills. Match strengths with strengths.