I just checked my box of Polycom stuff.
It's an 8 pin/8 wire connection, straight through. The plugs are keyed, most likely so someone would not inadvertently use it as an ethernet cable.
Worth a shot to try a cat 5e cable if you don't have the standard cable.


Jeff Moss

Moss Communications
Computer Repair-Networking-Cabling
MBSWWYPBX, JGAE