13.1.7 PDN (Primary Directory Number)/SDN (Secondary Directory Number) Extension
Light Pattern
Moderate green flashing
Rapid green flashing
Red on
Slow red flashing
Rapid red flashing
PDN Button Status
•A call on a PDN button is on Exclusive Call Hold or consultation hold.
•The PDN extension is adding a member to a conference or using the line for an Unattended Conference, on a PDN button.
An incoming call is arriving at this extension.
A corresponding SDN extension is:
•on a call.
•holding the line using Exclusive Call Hold or consultation hold.
•adding a member to a conference.
•using the line for an Unattended Conference.
•receiving Hold Recall or automatic callback ringing.
A call is on hold by a corresponding SDN extension.
A call is arriving at an Incoming Call Distribution (ICD) group in Ring Distribution method that this extension is a member of.
SDN Button Status
•A call answered using the SDN button is on Exclusive Call Hold or consultation hold.
•The SDN extension is adding a member to a conference, or using the line for an Unattended Conference.
Receiving Hold Recall or automatic callback ringing from a call answered using the SDN button.
The corresponding PDN extension or another corresponding SDN extension is:
•on a call.
•holding the line using Exclusive Call Hold or consultation hold.
•adding a member to a conference.
•using the line for an Unattended Conference.
•receiving an incoming call directed only to the PDN extension (e.g., callback ringing).
A call is on hold by the corresponding PDN extension or another corresponding SDN extension.
The corresponding PDN extension is receiving an incoming call.
When multiple calls are on a PDN extension, the LED pattern that appears on the corresponding SDN buttons is displayed according to the following priority:
Receiving an incoming call → holding a call → on a call → idle
For example, if a PDN extension receives an incoming call while on a call, the LEDs on the corresponding SDN extensions will show the incoming call.
However, if an SDN extension is handling a call using the SDN button (e.g., on a call, has a call on hold, etc.), the status of that call will be displayed on the SDN button, regardless of the call status of the PDN extension.
Example of a Secretary Handling Calls for Multiple Bosses
The following example shows the LED patterns of the PDN and SDN buttons of each extension and how calls can be handled.
1.A Call From 111-1111 Arrives at Ext. 101
Ext. 101 (Boss)
PDN buttons | SDN buttons |
(Off) | (Off) |
| (Ext. 103) |
(Off)
(Off)
(Ext. 102)
(Rapid Green Flashing)
Ext. 102 (Boss)
PDN buttons | SDN buttons |
(Off) | (Off) |
| (Ext. 103) |
(Off) |
|
| (Rapid Red |
(Off) | (Ext. 101) Flashing) |
|
Ext. 103 (Secretary)
PDN buttons | SDN buttons |
(Off) | (Off) |
| (Ext. 102) |
(Off) |
|
| (Rapid Red |
(Off) | (Ext. 101) Flashing) |
|
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Feature Manual | Document Version |
