NEC DS1000 Correspondence Course Workbook page 104

DS1000/2000 Correspondence Course
DS2000 System Installation
104 DS1000/2000 Workbook
Door Box Ringing
When a visitor at the door presses the Door Box call button, the Door Box
with alert (chime) all the extensions in the Ring Group to which the Door
Box belongs. For example, if the Door Box and extensions 301 and 302 are
in Ring Group 1, pressing the call button alerts 301 and 302.
1802: Ring Group Number
Assign the Door Box and the extensions that should alert to the same
Ring Group.
0511: Ring Group Master Extension Numbers and Names
Assign a Ring Group master number to the Ring Group assigned in the
previous step.
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