I am trying to identify the paging port on a toshiba dk40i. There are only two 25 pairs coming from the ksu to the blocks. The blocks are above a drop ceiling, awful. the paging system is 24v self amplified horns but the wiring is a mess. I read some dk40i manuals and it isn't clear where I can find the page port on the block. Could it be vary based on where this card installed? Customer presses a button on the phone that pages both the phones and the speakers if that helps.