BT Paragon 550 Corded phone

I hope this is the right place to ask this. We have a BT Paragon 550 corded phone with caller display situated in our hall. The problem we have with it is that the ringtones on it are all musak and we hate them all. Also, even with the volume up high we can’t hear the phone ‘ring’ from another room if the TV/radio is on. We have another cheaper phone in a bedroom and we can hear that one above this BT one! So we switched the volume off the BT phone and moved the spare phone to the living room so we’d hear the phone ring. I’m wondering is there any way we can change those awful ringtones in the BT phone? If not, we will have to get a new one, can anyone recommend a normal corded phone with caller display that just has an ordinary ringtone that we can live with? Sorry for being long-winded, hope someone can help.