Hi, my PALS has lost all mobility and is on a bPAP 24/7. His night time mask prohibits him from speaking. When he needs assistance he was using a call button on his portable phones but now has lost the ability to do that. Is anyone in a similar situation and using some kind of intercom system? I don't know if a baby monitor will work because as I said because although he can talk, he can't be easily heard with the full bPAP mask on. Any suggestions? Thank you in advance for any help.