Filter
Top Products
Light Pattern PDN Button Status SDN Button Status
Flashing red
rapidly
The PDN extension is receiving an incoming
call to an incoming call distribution (ICD)
group.
The corresponding PDN extension is
receiving an incoming call.
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. Talk.
Press corresponding
SDN.
(SDN)
Standard SDN Key Mode
Off-hook. Talk.
Press corresponding
SDN.
(SDN)
D.Tone
Press the SDN again.
PT/PS
(SDN)
• When
performing SDN Direct Dial to call the corresponding PDN extension, the SDN button
light shows the current status of the destination extension as follows:
Green on: You are using the line.
Red on: The line is being used. (The PDN extension, or another SDN extension when multiple
extensions have SDN buttons to a same PDN extension, is using the line.)
• Even if a PDN extension has set Do Not Disturb (DND), you can call the extension as normal
by pressing the SDN button.
• When
an SDN button is in Standard SDN Key Mode, you can dial a telephone number while
hearing a dial tone, instead of pressing the SDN button again. Depending on system
programming, your call will be made using either your normal calling privileges (Class of
Service) or those of the corresponding PDN extension (SDN Walking COS).
94 User Manual
1.5.1 Primary Directory Number (PDN)/Secondary Directory Number (SDN) Extension