Is there a special wall bracket for a 7906 phone to mount it on the wall. The phone does not mount properly on a standard SS wall bracket. The pins on the bracket do not line up with the slots on the phone. I found some huge Cisco bracket that has 4 plastic anchors that you put in the wall which I really do not want to use. If you take the phone down we'll have to get maintenance to repair the wall! Any suggestions?