While Traveling I want to improve communications to my customers and simplify my contact management. Wherever possible, use management products like ACT, GoldMine, or Telemagic to become more effective. These, and other, products can track follow-up phone calls, meetings, letters, and sales potentials. For example, you can have mobile people entering information in PDAs and synchronize this information with contact managers like ACT or mail systems like Microsoft Outlook. The combination of Outlook and Exchange is Microsoft's key strategy to integrate information into all sorts of other systems, including accounting systems.
Network administration can vary in complexity.
In house administration can give you more flexibility, but you may wind up with a lower level of expertise. That's about one quarter of a year. You will want to do this calculation based on local market salaries and network administration labor rates. If you use in house network administration, set aside funds to contract for outside expertise when needed. The number of support people will depend on network complexity.