Hi friends, starting from some weeks ago I have to listen one radio commercial on my wired phone as backgroun. Sometimes is low volume, and sometimes is too high that cover the other person listening/speaching on the phone. I have asked to the telephone company, bu he say tha is a mine PABX problem. I have inserted a toroid with three loop of telephone line near the PABX and near the telephone, but the problem remain the same. Do you have any suggestions? Do you can suppose the cause? Why before I do not have been the problem? Thanks Leo