This is absurd that this can not be changed now. On my first Sprint phone I was able to change the number of rings. This has been something that is phone controlled for years. Cell phone companies are over stepping their bounds by restricting something like this. This never should have been/be a system controlled feature. When the user sets a certain number of rings it then goes to voicemail. This has been an industry standard long before Cell Phones.
The "system" does not know my or your personal situation why you could answer a phone in 1 or 10 rings. It is not their decision to make. I am reporting a complaint into a supervisor at Sprint as well. This is an absurd restriction. Saying that the CDMA network cannot do this, is not an excuse nor is it acceptable. Well, hopefully Sprint will get on the ball and fix this.