Panasonic KX-TD500 System Reference Manual page 283

3) Intercept Routing No Answer (IRNA) and Station Hunting
"Foward to VM Sequence"
is not sent
(Refer to "8. Treatment of
the call transferred to the
busy extension/VPS" on
page 3-F-56 for further
information.)
The KX-TD500 system sends the "Forward to VM Sequence" to the
VPS, if the caller is transferred to the VPS 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 extensions
within a Station Hunting Group?
Caller are transferred to the VPS of
the called extension's mailbox directly.
* If the "Transfer Recall" or "Held Reminder" call is transferred to the busy
VM extension by IRNA feature, it will be put on the waiting status whether
the IRNA destination has the next station assignment or not.
3-F-23
Yes
No
Yes
Yes
Yes