Can you turn the house phone's ringer off? On mine you can, so that way it will ring but you won't be able to hear it. Especially if your son is likely to ask why you're not answering the phone.
Both 50 S14 M 16 yrs (his 3rd; my 1st)
ILYBINILWY - 24 Dec 2012 H moved out - 27 Jun 2013 Legally separated - 6 Sep 2013 Closing the door and changing the locks