Advanced long range phone systems can extend an existing service 80 to 160 kilometers. A microentrepreneur in a remote village could set up a solar-powered satellite connected phone system and charge for phone calls. Email and Internet access could be available for a different rate. If a regular telephone line is available in a nearby city or business, a long range phone system might be less expensive, if it is possible to have the phone company install a second line. If a second line is available, plug the remote phone system base into the new phone line, run a cable to a roof-mounted antenna, and shoot the signal to your remote location.
Costs vary based on required features, terrain, and distance.
If cellular service is available, solar power can charge the cellular phone batteries and keep them in good working order. This business can start small with a single line phone and gradually expand to accommodate the potential number of users.