http://www.enigmation.de/fonpol.html

Moving the telephone handle in perspective should be such an elementary task for any animation software, but alas, it isn't. In TVP I tried but got a horrible result, mainly because I can't assign a size parameter in %, but have to use Z axis values, which will change all X and Y values.
In AS I used my old trick of placing the handle at the start position and place the origin point over the vanishing point. Now I could just use the scale tool to create the movement. But still there was no wy to get the right speed automatically. I ended up placing keys ever 4 frames and adjust the position with the help of onionskinning. (Remember: a constant movement in perspective can be constructed easily with this method, just use the same overlap of the object at the same interval of frames.)