Although the operator service markets are becoming increasingly mature, those companies that ameliorate their brand awareness and employ aggressive marketing strategies will experience revenue surges and extended product life cycles. To defray service costs and maintain positive growth rates in the multi-billion dollar collect calling market, carriers must develop cohesive advertising campaigns targeting specific end-user segments. Brand name awareness should be promoted through television, radio, print, and Internet advertisements, as well as through effective use of celebrity spokespeople. From Frost & Sullivan.