the lady called from a 343 area code. I am in Ottawa which is a 613 area code. Anyone know where 343 is?

the problem with turning off the ringers is that i have 4 phones. One is always turned off, its very loud. the other 3 are not. I also have family in the hospital and a mother with health problems and is in and out of the hospital and I don't want to miss a emergency phone call. Most people have my cell number, but they always seem to call my home instead if their is an emergency.