Panasonic KX-T336 System Reference Manual page 286

(2) What if a call ringing at overflow destination
is not answered?
In case the overflow destination is an
attendant console or extension.
1. When the call ringing at overflow
destination has originally arrived to a UCD
group by call transfer.
(Transfer Recall)
The call will ring back at the attendant
console/extension who transferred it, if not
answered until the transfer recall timer has
elapsed.
CO
ATT/EXT.
Transfer
UCD group (05-32)
(All Login)
Overflow destination (ATT/EXT.)
No Answer (Transfer recall timer
2. When the call ringing at overflow
destination has originally routed via DISA.
<Disconnection>
The call will be disconnected automatically,
if not answered within 60 seconds.
5. Auto Log-out
When an extension in a UCD group does not
answer more than a set time period ("Call
Forwarding-No Answer Time-Out"),the call
will be automatically transferred to other
member's extension.
If "No Answer Time-Out" occurs twice in
succession on the same extension, it is
automatically set to Log-out status.
Note:
From software version 15.XX or higher, "Auto
Log-out" can be disabled on a UCD Group
basis. See Section 10-C-70.00 "UCD Auto
Log-out" Operation (ULO).
has elapsed)
3-D-14-4
(70695)
Operation
Making a call from extension to a UCD group
1. Lift the handset or press the SP-
PHONE button.
• Dial tone 1 or 3 or 4 sounds.
2. Dial FDN of the UCD group.