The interaction between a transmission line and a communication line can be minimized by all of the following:

1. Transposing transmission as well as communication lines
2. Increasing the height of the transmission line tower
3. Increasing the distance between the two lines

Transposing involves periodically interchanging the position of the conductors in the transmission line. This helps to balance the electromagnetic fields around the conductors, reducing the amount of interference that is generated. Increasing the height of the transmission line tower or increasing the distance between the two lines can also help to minimize the interaction between the two lines to some extent, but these measures may not be as effective as transposing the lines.