[How the Group Call Waiting Feature Activates]
Group Call
Waiting Mode
Distribution
All
Group Call
Distribution Method
UCD
Priority Hunting
Ring
UCD/Priority Hunting/
Ring
Programming Conditions
Capable
Telephone
PT/PS with idle
ICD Group button
Any telephone
Group Call Waiting
Distribution Method
UCD
Priority Hunting
Not available*
Ring
Result
* Incoming calls enter the queue immediately. Member extensions do not receive the Call Waiting tone.
[Example]
Group Call Waiting mode: All
Group call distribution method
for idle extensions: UCD
All extensions hear the Call
Waiting tone (Ring).
•
•
[ICD Group Button for Group Call Waiting]
The way that the Group Call Waiting feature works depends on the Group Call Waiting Distribution method
as follows:
a. Ring: The Group Call Waiting feature activates for all busy member extensions (even when the
extensions do not have ICD Group buttons) simultaneously for only one incoming call—additional calls
will wait in a queue.
b. UCD/Priority Hunting: The Group Call Waiting feature activates on an idle ICD Group button located
on busy member extensions in a certain order. (This order depends on the type: UCD or Priority
Hunting.) Calls will arrive at idle buttons until all ICD Group buttons are occupied—additional calls will
wait in a queue.
Note
In method b), if an extension has one or more ICD Group buttons for an incoming call distribution
group and all the ICD Group buttons on the extension are occupied, the Group Call Waiting feature
for the group will not work at the extension.
ICD Group 1; 601 (Call Waiting)
ICD Group 2; 602 (Answering the Call)
2
1
3
ICD Group 1
(Floating
extension
no.: 601)
ICD Group 2
(Floating
extension
no.: 602)
ICD Group 1; 601 (Call Waiting)
3. No Reply Redirection (UCD or Priority Hunting Method)
If a call received at a member extension is not answered within a preprogrammed time period (No Answer
time), the call will be redirected to the next member extension. If there is no idle group member, the call
queues at the target extension until a group member becomes available.
Document Version 2008-11 Feature Manual 145
9.1.2 ICD Group Features—Group Call Distribution