I've installed an expansion cabinet on an existing Magix. I installed a 412 TDL in the first slot and a 016 TR card in the second slot. I performed a system renumber.The TDL 412 card came up fine. The 016 TR card does not give me intercom dial tone. If I dial the extension #s on the TR card I get a busy. If I do an extension directory print it shows the extension #s of the TR card. Where can I go from here???