That system has a pretty steep learning curve, as it is designed to be programmed by a Toshiba tech.
Here's a start.
SLT= Single Line Telephone, also refered to as Analog phones, like you find in most houses.
Trunks= phone lines into the system. The "Dial Tone"
Cat 5E= The cabling that sends the dial tone, phone connection, data, and many other thing accross.
Looking at the viking it looks like it would be plugged into a trunk port on the system. You could see if it works at all by plugging in a phone and pressing the door phone. The phone should ring. If you were looking at the cards in the phone system, you may see one of them blinking when you press the door phone.
If the door phone still works, then getting the phones toring whenthe button is pressed is a completely differnt challenge.
Sounds like a winning plan, invite a Toshiba tech to stay the weekend in exchage for prgramming the system for you.
This is the model for the viking door phone
https://www.vikingelectronics.com/products/view_product.php?pid=23 Altho it looks a slightly differnt.
You can probabaly download the manuals. I hear that there is a link at the top of this web site.
Hope you enjoy reading.
