If the camera is placed in your office, access to a network is probably easy.
Many solutions already exist, and new connectivity technology is being invented all the time.
ISPs have covered the planet, so it's almost always just a local call charge to get the data onto the internet for access anywhere in the world. Cellular modems can connect systems in locations not supported with land phone lines, albeit at a slower speed and higher cost than conventional modems. 56K modems offer faster speeds on downlink. How about cellular access. If the site has cellular, and slow frame rates are acceptable, cellular is a good choice.