1 converts written data into sound waves. 2  converts the sound waves from a voice into a digital signal. 3  converts letters from the keyboard into digital format. 4  converts digital sound waves into analog sound waves.
Travel agencies make their money in a variety of ways. The products agents sell have built-in fees that result in a profit for the agency. The amount of the fees and the ways in which they are earned and distributed differ by the type of product sold and the suppliers who provide that product to the agency.
Most fledgling home-based travel agents, however, start out by paying a fee to a host agency that specializes, to a greater or lesser extent, in dealing with outside agents (or ârunning an outside agent networkâ as itâs sometimes referred to in the trade).