Samsung DCS Caller I.D. User Guide
Caller ID
Overview
for the
DCS & DCS COMPACT
Samsung Telecommunications America, Inc. reserves the right without prior notice to revise information in
this booklet for any reason. Samsung Telecommunications America, Inc. also reserves the right without prior
notice to make changes in design or components of equipment as engineering and manufacturing may
warrant. Samsung Telecommunications America, Inc. disclaims all liabilities for damages arising from the
erroneous interpretation or use of information presented in this booklet.
CALLER ID
OVERVIEW
What is Caller ID?
Caller ID (CID) is the name given to a telephone companyprovided feature that delivers the telephone number and sometimes the listed directory name of the phone that you are being
called from. There are two types of Caller ID: the first delivers
the calling party’s telephone number only and the second (sometimes referred to as “Deluxe” Caller ID) delivers both the calling party’s telephone number and his/her name as listed in the
telephone directory. The DCS and DCS COMPACT systems
can handle both types of Caller ID; in fact, in the case of number only delivery, the system can be programmed to insert a
name for a specific telephone number (up to a maximum of 250
numbers).
However, even though you are paying for Caller ID service,
there are some circumstances that mean you will not receive
this information. The three most common reasons are listed
below along with the Caller ID information that you will see
on your display keyset.
PRIVPRIV
AA
TETE
PRIV
A
TE This display means that the person calling you
PRIVPRIV
AA
TETE
does not wish his/her name or number to be
revealed to you. The caller has blocked the Caller
ID data either by the use of a “one time” block
code for this call or by having Caller ID permanently blocked for all calls. This is similar to having an unlisted number. You can have the telephone company block PRIVATE calls by dialing a reject code on your outside lines. This will
redirect PRIVATE calls to an announcement that
states that you do not wish to receive calls that
have had Caller ID blocked. The code to reject
these calls can usually be found in the front section of the telephone directory.
OUT OF AREAOUT OF AREA
OUT OF AREA This display indicates that the person calling you
OUT OF AREAOUT OF AREA
is calling from an area that cannot provide Caller
ID information (for example, international calls)
or that he/she is calling from a type of circuit
that cannot provide Caller ID information, for
example, some outbound WATS lines. This display originates when Caller ID is not available
across area code boundaries and means that the
call is coming from outside your area code.
1
PP
AA
YPHONEYPHONE
P
A
YPHONE This display simply indicates that the person call-
PP
AA
YPHONEYPHONE
ing you is calling from a coin-operated telephone.
The telephone company sends this information
in the CID NAME field because there are no
directory listings for pay phones. However, the
Caller ID number is delivered as usual.
How Caller ID
Works
The Caller ID information is sent from the Central Office on a
loop start line between the first and second rings of an incoming
call. In order to capture the Caller ID data, the system must delay
for approximately six seconds or one ring cycle before ringing a
station. This data collection period can be observed if the telephone system is programmed with direct line appearances. The
LEDs on the line keys will light red for the duration of the data
collection period to prevent the line from being seized and interrupting the Caller ID data before starting to flash green to indicate an incoming call.
The Caller ID data is sent as a Frequency Shift Keyed (FSK) signal. This is the same signaling format that modems use to talk to
each other and is well suited to this type of operation. On a normal single line phone, this signal can be heard as a squealing or
white noise on the line if the call is answered while the data is
being sent. This cannot happen on the DCS or DCS COMPACT
because the telephones on the system will not start to ring until
the data has been collected.
The information that is sent as Caller ID is the information associated with the telephone line that is used to make the call. This
may not necessarily be the name and number of the person making the call. This information consists of the telephone number
with the associated area code (for example, 3054264100) and the
first 15 letters of the name as listed in the telephone directory (for
example, SAMSUNG TELECOM). If these numbers are dialed
back as they are received, the Central Office will intercept the call
and play a recording saying, “That number cannot be completed
as dialed” or “you must first dial a one or zero before dialing this
number.” The first message will be received if the number is local
and the second message indicates the call is long distance. This
means that the number must first be modified before it can be
dialed. To enable long distance calls to be redialed, the DCS and
DCS COMPACT systems automatically insert the required “1” in
front of the area code. This is why our example appears in the
display as 13054264100. However, if the call is a local call, the first
four digits or “1305” have to be removed. This can easily be
achieved in the DCS and DCS COMPACT by using the modify
2
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