On Panasonic PBX's, I usually allocate 1-4 CO's for DKS units (Doorking). In this case, the customer has (3) DKS 1812's so CO3, CO4, CO5 are setup for this. I have explained to customer that they can simply pickup one of those CO's and press *7 followed by 9 and the DKS unit will respond and open the gate. They simply can't remember the procedure even though I typed instructions, so is it possible to program one of the spare PF keys to say Pick up CO3, Dial *7 [PAUSE] 9 ? That way they can just hit one button and open the respective gate without running outside with their "clicker" .
The PBX is a KX-TDA100 if that matters.