Panasonic KX-TD500 - Manual (Page 148)

Group
148 Programming Guide
Parameter [Operator Setting] Ringing Type
Default Single
Value Range 1. Multi
2. Single
Description/Function Specifies whether the calls coming in on an Operator Group ring
one Operator (Single) or all Operators in the group (Multi)
simultaneously.
(Assignable only when "Operator" is specified in "Group Type"
programming.)
Reference •1.3 System Features (F/G)
– Operator Group
• 1.6 Originating Features (F/G)
– Operator Call