To make a long story short. I had a customer that spent alot of money with the company I work for an a few weeks after the job was done, I get a call late at night on my home phone. I dont know how he got my home number. But anyway, back to the story. I talked to him via his cell phone about his home phone and internet, both had stopped working. I asked him if anyone had recently worked on the house and he stated no one had been inside but the telephone company. They had buried the phoneline outside and had checked the line to his utiliy box and everything was ok. I went back to the house and found that the customer had plugged his second incoming phone line coming from the utiliy box into the network router switch at the home run box. Now the Question is, do you charge him to "fix" this or just laugh about for years.