Think about what you want the logo to do. A good logo is simple, clean, unique and connected to the company. You want your logo to look good in black and white (not grayscale, but true b&w) or color, by itself or with the company name and to be instantly recognizable. Look at Nike, Coke or Apple. Their logos are super simple, but communicate so well that even when the logo is by itself you still know what it's for. One thought, off the top of my head, is a phone receiver with the mouthpiece transitioning into an arrow showing that the communication moves out from where you are to the world.