My friend just called me on my cel and was wondering why our home phone doesn't work. I checked it out and none of our house phones has a dial tone. I went to check to see if there is a phone that's off the hook, but they all check out. It's really irritating me that I don't know if there is a phone that I forgot to check, or if there really is something wrong with our landline. Is there any other reason why the phone would have no dail tone?

BTW, if it helps, our phone, cable and internet are all coming from Cox Communications.