Toshiba DK 40 card slot for RCOU

[NiceRing]

Not all that familiar with Toshiba and have checked what info I can find. I am adding CO lines 9--12 into the expansion cabinet of a DK40. I had tried a RCOU3 and that didn't work. Now I am trying and RCOU1 card, V.1. The led lights on the card light when I press a CO line button, I know the lines going in are good, the buttons are programmed to be the correct lines, but I can hear no dial tone. I did program to tell the slot it was a CO card, I beleive that is code 11. What I am not sure is that I have the correct slot number. Can someone clarify which program I need to program the card slot and which card slot this RCOU card is. It is above the other RCOU card.
thank you.

 

[twohuck]

Slot 15 in Program 03 is the lower slot to the back of the expansion cabinet. And yes the code for a 4 port co board is 11.

 

[twohuck]

If your adding lines 9-12 you should probably use a RCOU/RCOS 8 trunks in one slot and use code 17 in program 03.