What signal-to-noise ratio is needed to put a T1 carrier(1.544 Mbps) on a 50-kHz line?

What signal-to-noise ratio is needed to put a T1 carrier(1.544 Mbps) on a 50-kHz line? It is desired to send a sequence of computer screen images over a noiseless optical fiber. the screen is 480*640 pixels, each pixel being 24 bits. There are 60 screen images per second. how much bandwidth is needed?