Using Caller Display Service (Cds) - BT Revelation Owner's Handbook Manual

Using Caller Display Service
(CDS)
Caller Display Service (CDS) is a BT
Network service which may be used with a
BT Revelation CDS or CDS Upgrade system.
(This feature may not be available on all
systems). It means that when you receive an
incoming call, the caller's number will appear
on the displays of all Systemphones
programmed to ring for incoming calls so you
know who is calling before you answer.
Displayed Information
•If a name has been programmed through
system programming for association with the
external number, the name will appear on the
display (details of how to program this may be
found in the section Associating Names and
extension numbers with CDS numbers).
•The calling line number of the associated
name for the answered line will remain on the
display for the duration of the call.
•If there are more than 13 digits in the calling
number, the display alternates between the
display of the first 12 and the remaining digits
until the call is answered.
•A caller may have chosen to withhold their
identity, in which case the display will show
Number withheld instead of the caller's number
or name.
•If the number information is not available, the
display will show No. unavailable instead of
the caller's number or name.
•If more than one line is calling at any one
time, the number displayed will be that of the
first call in the queue. When this call is
answered by one of the ringing
Systemphones , the number of the next line in
the queue will be displayed on the displays of
the other ringing Systemphones.
•Even if your Systemphone is not ringing for
the call, you may examine the incoming call
ID by dialling 63. The same information
shown on the ringing Systemphones is then
displayed.
Caller ID memory
• Information about the last 50 calls to the
system is stored automatically in the system.
The information which is stored is the calling
line number, and the date and time of the call.
Information is not stored for calls withheld or
unavailable numbers.
• The number, date and time of answered and
unanswered calls is stored unless your BT
engineer has programmed your system to
record unanswered calls only.
• When the memory is full, the oldest record is
discarded from memory when a new record is
received working on a first in first out basis.
• The display at extension 20 shows New Unansw
Ca 11 when new unanswered calls have been
s
received. This text is erased when the stored
calling line information is examined by any
System phone.
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