Hi,
in 10-03 SLIU Configuration X109 shows as door phone and logical port is 0. Tried to change to SLT but won't hold.
X110 is OK. Thanks in advance.

Did you follow these instructions? When changing a defined terminal type, first set the type to 0 and then plug the new device in to have the system automatically define it or you may have to reset the ETU

There is also a jumper.

I reset the cabinet but nothing changed. There is no option to set terminal type to 0 only SLT or Door Phone.
Also, I'm not seeing a jumper. This is the 8 digital 2 analog board.

I just found the jumpers on my bench system. I'll need to go back to customer and check the jumpers. This was a new system and never had the jumper on door phone from the factory. Thanks all for your help.