• If none of an extension’s PDN buttons are idle, DSS buttons of other extensions registered to the PDN
extension will turn on red.
• Ring Tone Pattern
Through system programming, each extension can set ring tone patterns for PDN buttons. Ring tone
patterns can be assigned separately for each SDN button.
• Outgoing Line Preference
When
"PDN" is selected as the outgoing line preference, outgoing calls will originate on the first available
PDN button (® 10.1.3 Line Preference—Outgoing).
• Incoming Line Preference
Through system programming, it is possible for only incoming calls arriving at PDN buttons to be answered
simply by going off-hook, by selecting "PDN" as the incoming line preference (® 10.1.2 Line
Preference—Incoming). This prohibits calls that arrive on non-PDN buttons (e.g., an SDN button) to be
answered when going off-hook.
• Walking Extension
For PDN extensions, the Walking Extension feature can only be used when all PDN buttons are idle (®
20.1.2 Walking Extension).
• Wireless XDP Parallel Mode
If a PS has PDN or SDN buttons, Wireless XDP Parallel mode cannot be assigned to that PS (®
20.1.5 Wireless XDP Parallel Mode).
• OHCA/Whisper OHCA
A PDN extension cannot receive OHCA or Whisper OHCA, unless the call is made using a corresponding
SDN button (® 12.1.3 OHCA (Off-hook Call Announcement), ® 20.1.4 Whisper OHCA).
• Alternate Calling—Ring/Voice
It is not possible to temporarily change the called party’s preset call receiving method (ring tone or voice)
when calling a PDN extension, unless the call is made using a corresponding SDN button (®
9.1.13 Intercom Call).
• Through system programming, it is possible to force an extension to become idle (the SP-PHONE button
light will turn off) when a speakerphone call using a PDN/SDN button is put on hold using CTI.
[Delayed Ringing]
• The same delayed ringing setting is applied to all PDN buttons on an extension. Delayed ringing can be
assigned separately for each SDN button.
• Through system programming, it is possible to select whether caller information (such as Caller ID) is
shown immediately on a PS when a call is received while delayed ringing is set.
• Caller information (such as Caller ID) is not shown immediately on a PT when a call is received while
delayed ringing is set.
• SDN buttons can be set to not ring (only flash) for incoming calls. However, this setting is not available for
PDN buttons.
• The forward no answer timer starts when a PDN extension starts ringing.
PC Programming Manual References
4.12 [2-7-1] Class of Service—COS Settings—PDN/SDN
4.17 [2-8-3] Ring Tone Patterns—Call from Others—
Extension—Ring Tone Pattern Plan 1–8
4.18 [2-9] System Options—Option 4— System Wireless—SDN Delayed Ringing with LCD
4.18 [2-9] System Options—Option 6 (CTI)— CTI Hold—Forced Idle when Hold by PDN/SDN Key
6.1 [4-1-1] Wired Extension—Extension Settings—Option 9— PDN Delayed Ringing
6.5 [4-1-4] Wired Extension—Flexible Button
→ Type
→ Parameter Selection (for SDN)
→ Extension Number (for SDN)
→ Optional Parameter (Ringing Tone Type Number)
(for Loop CO, Single CO, Group CO, G-DN, SDN)
6.10 [4-2-1] Portable Station—Extension Settings—Option 9—
PDN Delayed Ringing
Document Version 2013-05 Feature Manual 229
13.1.7 PDN (Primary Directory Number)/SDN (Secondary Directory Number) Extension
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