After reviewing, there is possible joint poles, where telephone and power coexist, but under no conditions they affect each other.
If its just mains 220v it is somehow ok _if done properly_ and not centimeters nearby. Properly it is something like that:
30 inches - 76cm
High voltage a bit more complex, multigrounded neutral is a key
You can see examples of safe joint poles here:
http://www.annsgarden.com/poles/poles.htm#com
48VDC can give some shock as well. You need to check voltage towards ground or neutral line, if there is any AC, better if someone skilled will do that.