My suggested solution is to go cellular but to do so reusing obsolete technologies from the developed world. Cellular telephony means that there is no need for miles of copper wires or fibre optic cables. It can be rapidly deployed.

But cellular telephony presents a new problem - bandwidth. A cellular telephone line cannot communicate faster than 9,600 bps while modern modems can communicate at 56,000 bps. Modern sophisticated network require wide band communications, something which cellular cannot provide

.

The solution here is to go backwards. Before we developed the technology to squirt wide band communications down telephone lines we made very efficient use of our narrow band communications by sending documents without graphics. Vast quantities of information could be sent in plain or formatted text. Error correction protocols ensured that the data got though without being corrupted enroute. Security and authentication for most purposes could be provided by means of simple encryption; not today's sophisticated PGP (Pretty Good Privacy) based technology but by using proprietary encryption within applications eg WordPerfect 5.1 allows the user to encrypt a document and password protect it. Similar features were contained in Lotus 1-2-3. (Yes the encryption was breakable but it gave a reasonable degree of security against the casual snooper.)

Today those same systems which worked down slow land lines could be made to work using obsolete cellular technology.