To install a DAC Racal RA711 vandal and weather resistant telephone you have to purchase a mounting box. It is sold separately as there are different types depending on how you want the telephone to be fitted to the wall.
RA711 Wall Mounting Box
The DAC Racal RA711 wall mounting box is to surface mount the DAC Racal RA711 telephone onto the wall. The back of the telephone is then enclosed by the mount box so the telephone is protected even though it is not flush with the wall itself.
Back or Bottom Cable Entry
Also you can purchase this wall mounting box so the cables that connect the telephone to its socket can be fed out through the back or bottom of the mounting box.
Made with heavy duty steel the DAC Racal RA711 mounting box is as heavy duty and durable as the DAC Racal RA711 telephone itself.