Panasonic DBS Series Overview page 19

Panasonic Digital Business System - Overview
April 1997
DDI to Groups
When a DDI call is routed to a group hunting call forward and coverage groups are not
available and do not operate.
A extension in a group cannot receive a DDI call under the following conditions.
Off hook
While receiving another call
While being used for programming
The extension to which call forward has been set cannot receive a call
While DND is set
While absence message is set
SLT overload (system cannot drive the ringer on any further SLTs)
While holding an internal or non appearing line and the DDI is also non appearing
A group cannot receive a DDI call under the following conditions.
All members are unable to receive the call
The group is receiving another incoming DDI call which is not yet answered
Incoming DDI ringing is only sent once. If a receiving extension returns to idle after DDI
ringing is sent it will not ring for the missed DDI call.
Auto Transfer / Terminate Of DDI Calls
When a DDI call cannot be routed to its destination, is unanswered or the DDI number is not
recognised it will either be transferred to the operator or terminated depending upon system
program setting.
Sending Of DDI Number On Outgoing Calls
The DDI number of a telephone can be sent to the network with outgoing calls to become CLI
for the receiving party.
When a telephone has multiple DDI numbers assigned to it the DDI number sent is
determined using the following rules.
If the extension has its own DDI and is a DDI group member, extension DDI is sent
If the extension has more than one individual DDI, the DDI look up table is scanned
from 1 to 144 and the first DDI found for the extension is sent.
If more than one DDI group numbers and no extension DDI us set, the DDI look up
table is scanned from 1 to 144 and the first group DDI found for the extension is sent.
DASS II Called Party Busy
When the called party is busy the DBS can pass busy tone to the extension making the call
or terminate the call and pass dummy busy tone to the extension. It is also possible to display
the cause of the busy tone returned from the network on the LCD of a keyset. The action
taken when a called party is busy is specified through programming.
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