I have had my HR 44 for a few weeks and really like it. But when it was installed, I noticed my phone wasnt working. There was no dialtone. He unhooked the line from the HR 44 and it worked again. So I cant use the caller id feature and I really like it. The installer really didnt have an answer as to why. It was one of his first installs for a HR 44. Anyone have a reason and hopefully a fix for this problem?