I learned that if you have a wireless router within 3 feet of a cable modem phone, you can get interence that you don’t hear but the other people hear. Very unprofessional.
And I have learned that Comcast can reset the phone circuit to stop calls from dropping – three in one day! VERY unprofessional.
And I have learned that letting the phone company run phones is probably a good idea and I will probably go back to Verizon.