Panasonic NCP500 Operating Manual page 105

Light Pattern
Flashing green A call is on hold at the PDN extension
slowly (Regular Hold).
Flashing green A call is on hold temporarily or on
moderately Exclusive Call Hold.
Flashing green The PDN extension is receiving an
rapidly incoming call.
Red on A corresponding SDN extension is
using the line.
Flashing red A corresponding SDN extension is
slowly holding a call.
Flashing red The PDN extension is receiving an
rapidly incoming call to an incoming call
distribution (ICD) group.
SDN Direct Dial
Using an SDN button, you can easily call the corresponding PDN extension. SDN buttons are in one of two
modes depending on system programming, and the operation procedure differs as follows:
Enhanced DSS Key Mode
PT/PS
Off-hook.
Standard SDN Key Mode
PT/PS
Off-hook.
Document Version 2009-11
1.3.49 PDN (Primary Directory Number)/SDN (Secondary Directory Number) Extension
PDN Button Status
(SDN)
Press corresponding
SDN.
(SDN)
D.Tone
Press corresponding
SDN.
SDN Button Status
A call answered with the SDN button is
on hold (Regular Hold).
A call answered with the SDN button is
on hold temporarily or on Exclusive Call
Hold.
An SDN extension is receiving a Hold
Recall or callback ringing from a call
answered with the SDN button.
The corresponding PDN extension or
another corresponding SDN extension
is using the line.
Another corresponding SDN extension,
or the PDN extension itself, is holding a
call.
The corresponding PDN extension is
receiving an incoming call.
Talk.
(SDN)
Press the SDN again. Talk.
Operating Manual 105