An ad-hoc network that includes a plurality of telephones at least one of which is a mobile repeater telephone for establishing a first telephone connection line between a first caller telephone and a first receiver telephone, and for simultaneously establishing at least one second telephone connection line between a second caller telephone and a second receiver telephone. A subset of all the mobile repeater telephones in the network each have its own unique code and a subset of the unique codes are known to a subset of all mobile repeater telephones in the ad-hoc network. The mobile repeater telephones have a software program stored on the processors of the telephones or a database that is accessible by the telephones. The software program includes a geographic map in electronic form of the area of the network and includes data about topography and obstacles and how much the obstacles attenuate the signal.