Panasonic KX-T336 System Reference Manual page 320

3) Intercept Routing No Answer (IRNA) and Station Hunting
Follow on ID is not sent.
(Refer to "8. Treatment of
the call transferred to the
busy extension/VPS" on
page 3-F-51 for further
information.)
The KX-T336 system can send the Follow on ID (the digits of
mailbox number of the called extension) to the Voice Mail Port, if the
caller is transferred to a Voice Mail Port by IRNA feature.
The following simplified flow chart shows the treatment of the call
which has been transferred to a VM extension by the IRNA feature.
No
Is IRNA destination a VM extension?
Is it busy or in "Not INS" status?
No
Does it have the next hunt station?*
No
Is there any idle VM extension within
a Station Hunting Group?
Caller are transferred to the called
extension's mailbox directly.
* If a call transferred to a busy VM extension by IRNA feature is "Transfer
recalled call" or "Held Reminder Call," it will be put on the waiting status
whether the IRNA destination has the next station assignment or not.
3-F-18
(21292)
Yes
No
Yes
Yes
Yes