Panasonic KX-NS500 Features Manual page 155

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If none of an extension's PDN buttons are idle, DSS buttons of other extensions registered to the PDN
extension will turn on red.
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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.
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Outgoing Line Preference
When "PDN" is selected as the outgoing line preference, outgoing calls will originate on the first available
PDN button (® 2.5.5.2 Line Preference—Outgoing).
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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 (® 2.4.2 Line
Preference—Incoming). This prohibits calls that arrive on non-PDN buttons (e.g., an SDN button) to be
answered when going off-hook.
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Walking Extension
For PDN extensions, the Walking Extension feature can only be used when all PDN buttons are idle (®
2.24.3 Walking Extension Features).
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Wireless XDP Parallel Mode
If a PS has PDN or SDN buttons, Wireless XDP Parallel mode cannot be assigned to that PS
(® 5.2.4.5 Wireless XDP Parallel Mode).
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One numbered extension
If an extension has PDN or SDN buttons, Sub extension of One numbered extension cannot be assigned
to that extension (® 2.11.11 One-numbered Extension).
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OHCA/Whisper OHCA
A PDN extension cannot receive OHCA or Whisper OHCA unless the call is made using a corresponding
SDN button (® 2.10.4.3 Off-hook Call Announcement (OHCA), ® 2.10.4.4 Whisper OHCA).
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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
(® 2.5.3 Intercom Call).
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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]
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The same delayed ringing setting is applied to all PDN buttons on an extension. Delayed ringing can be
assigned separately for each SDN button.
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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.
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Caller information (such as Caller ID) is not shown immediately on a PT when a call is received while
delayed ringing is set.
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SDN buttons can be set to not ring (only flash) for incoming calls. However, this setting is not available for
PDN buttons.
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The forward no answer timer starts when a PDN extension starts ringing.
PC Programming Manual References
10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—PDN/SDN
10.8.3 PBX Configuration—[2-8-3] System—Ring Tone Patterns—Call from Others—
Pattern Plan 1–8
10.9 PBX Configuration—[2-9] System—System Options—Option 4—
Ringing with LCD
10.9 PBX Configuration—[2-9] System—System Options—Option 6 (CTI)—
Hold by PDN/SDN Key
2.9.1 Primary Directory Number (PDN)/Secondary Directory Number (SDN) Extension
Extension—Ring Tone
System Wireless—SDN Delayed
CTI Hold—Forced Idle when
Feature Guide 155