After fibre installation, the old copper line becomes redundant but may still be physically connected. Avoid DIY removal to prevent damage to. This guide outlines proper methods to safely remove fiber optic cable from modems in your home or office. As an experienced technology writer who has covered broadband advancements for over a decade, I aim to provide readers with trustworthy instructions endorsed by industry experts. Having. Are you looking to remove the old line completely? JA: Is the old line still connected or in use in any way? JA: Is there anything else the Network Technician needs to know about this situation? Rest assured, they will be able to help you with removing the old line if necessary. ScottN0130 is. Just wondering - is the comms connection to the copper line removed by BT whether the old cable is physically removed or not? If it is not, and the copper wire install is left untouched, would it be possible, in the event of a power cut, to unplug the landline base station from the SH2 router and. Therefore, never look directly into the end of an active fiber cable or the port of the equipment it was removed from. The second mandatory step is to power down the equipment before the cable is touched. In the future I'll be getting fibre optic which I imagine will be a different cable. This reduces the risk of electric shock and prevents any potential data loss during the.