I would highly suggest getting a local Toshiba technician to come give you a tour of the system and do the ringing program you are requesting of the DK. Its completely different than the CIX/CTX line of systems and you would be better served to have a guided "walk through" or 101 on the basics of programming and changes.

Its also always a good idea to create a rapport with your local tech, since they have the parts and knowledge for these older systems in the case you have an emergency.

- Tony
Ohio Data LLC
Phone systems, data networks, firewalls and servers in Central Ohio.
Some people aren't used to an environment where excellence is expected.