Why does the ringer on some Samsung cell phones start low and increase in volume?

My old Samsung phone used to do this and new SGH-A257 that I got does this as well and its annoying. The phone receives a call and the ringer starts to ring at a low volume and gradually gets louder to whatever you have set to. Basically, even if you have set to the loudest, you might not hear it for the first 3-4 seconds when the phone receives the call.|||I used to have a Samsung and if I remember rightly you have to go into Settings%26gt;ringtones and make sure the setting is set to ringing or normal NOT ascending, am sure you will find it.