A Digital Super Hybrid key system can use single line telephones
(SLT) in addition to an electronic proprietary telephone. In addition it may contain features found only on a digital system.
DISA
Direct System Access. This feature allows callers from the outside
to access specific system features as if they were an internal extension user.
Do Not Disturb (DND)
Allows you to prevent other parties from disturbing you. Your
extension will not receive intercom or outside calls.
DPITS
Digital Proprietary Integrated Telephone System. DPITS usually
refers to a digital series telephone or telephone system.
