NEAX2400 ICS Business Features and Specifications
NDA-24143, Issue 4
Page 179
Call Waiting Lamp - UCD C-76
C-76 Call Waiting Lamp - UCD
General Description
This feature uses an LED indication, which is one of the programmable keys on the D
term
, to indicate when
a call is waiting to be answered in the UCD queue.
Operating Procedure
No manual operation is required.
Service Conditions
1. The UCD Call Waiting Lamp displays the status of the UCD group as follows:
Lamp On: One or more calls waiting in the UCD queue.
Lamp Flashing: More than the pre-assigned number of calls are waiting in the UCD queue.
Lamp Off: No calls are waiting in the UCD queue.
2. The number of calls waiting in the UCD queue that causes the UCD Call Waiting Lamp to light
or flash can be assigned on a per-UCD group basis through the Maintenance Administration
Terminal (MAT).
3. The UCD Call Waiting Lamp indicates the status of the UCD group that the D
term
is assigned to,
not the status of other UCD groups.
4. The UCD Call Waiting Lamp indication lasts as long as calls are in a queue.
5. The lamp must be assigned to a D
term
line/feature key LED through the MAT. A call cannot be
answered by this key. Only the UCD line number key (prime, sub, etc.) can be used to connect
a call.
6. The number of UCD groups per system is a follows:
IMG, IMG
x
: 15 UCD Groups
IMG
xh
, IMG
dxh
, MMG, UMG, UMG
x
: 63 UCD Groups
Interactions
1. The lamp will toggle between solid and flashing as the number of calls in the queue increases
and decreases, crossing the threshold value set in AUCD.
2. If the pilot station number of a UCD group is set to CALL FORWARDING-ALL CALLS [C-5] to
another UCD group, UCD hunting takes place in that second group. If all stations in that second
group are busy, queuing takes place in the second group and its Call Waiting Lamp will light.
3. ATTENDANT CAMP-ON [A-1] call directed to the UCD pilot station will activate the UCD Call
Waiting Lamp if all stations in the group are busy.
4. CALL WAITING LAMP-UCD is not affected by CALL WAITING-TERMINATING [C-12].
5. CALL WAITING LAMP-UCD is only effective for the MY Line station of a D
term
. Even if another
UCD group appears as sublines on that D
term
, CALL WAITING LAMP-UCD will only function for
the UCD group of the MY Line station number.
6. If OVERFLOW-UCD [O-13] is programmed, overflow to the second group will take place if all
stations in the first group are either busy or in the busy-out state. There will be no CALL WAITING
LAMP-UCD indication to the first group.
7. If the overflow group is all busy, queuing takes place to the first group and the CALL WAITING
LAMP-UCD will light to indicate a queuing condition at the first group.
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