Dose the universal locking wall-mounting kit (CP-LCKNGWALLMNT2=) for Cisco IP phone comes with a physical "key"? If the answer is yes, is it an universal key can unlock all the wall-mounting kit? Thanks.
This kit does come with a Physical Key that is universal. It can open all wall mount kit locks.
The package includes these items:
1 phone bracket
1 wall bracket
4 10-12x1 inch Phillips-head screws with 4 anchors
1 sheet metal screw
1 six-inch Ethernet cable
**1 key if the bracket includes the optional lock**
From this doc;
Hope this helps!