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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.
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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.
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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
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Caller ID Hardware
(DCS)
digits section of the LCR feature and listing all of the local Central Office codes in the LCR tables.
Making Caller ID work on a DCS or DCS COMPACT requires
the use of some special pieces of hardware and a special version
of software that are installed in the system cabinet or KSU. These
parts are described below.
Caller ID on the DCS is achieved with the use of Caller ID compatible trunk cards, a special EXPN-A card called the EXPN-A1
card and a special Caller ID version of Release 2 software. There
are three types of Caller ID compatible trunk cards on the DCS—
they are the TRK-A1 card, the TRK-B1 card and the TRK-C1
card. As you can see, the suffix “1” after the card name indicates
Caller ID compatibility. Below is a brief description of these parts.
EXPN-A1 Card
The EXPN-A1 card carries the Caller ID decoder circuits that will
convert the FSK information received from the Central Office
into a form that can be understood by the DCS system. In addition to the Caller ID decoder circuits, the EXPN-A1 card also
performs all of the same functions as the EXPN-A card such as
supporting the expansion cabinets and providing additional DSP
resources. This card is required even if your system does not have
any expansion cabinets.
TRK-A1 Card
The TRK-A1 card fits in any universal card slot and has two Caller
ID compatible loop start C.O. lines with disconnect detection and
power failure transfer. In addition to this, it has all of the same
accessory circuits that the TRK-A has, such as an MOH input,
page output, etc.
TRK-B1 Card
The TRK-B1 card fits in any universal card slot and has four Caller
ID compatible loop start C.O. lines with disconnect detection.
TRK-C1 Card
The TRK-C1 card fits in any universal card slot and has eight
Caller ID compatible loop start C.O. lines with disconnect detection.
Caller ID Software
The special Caller ID version of Release 2 software for the DCS
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Caller ID Hardware
(DCS COMPACT)
consists of four EPROMs. Each EPROM contains four megabits
of information giving a total of 16 megabits or two megabytes (2
Mb) of information. They contain the system operating program,
all of the standard Release 2 DCS features and the additional Caller
ID features. These features are listed and described later.
Caller ID on the DCS COMPACT is achieved with the addition
of two pieces of hardware (the RAM 2 card and the MISC 2 card)
and a special Caller ID version of system software. All of the
Central Office (C.O.) or outside line circuits on the DCS COMPACT already have all the necessary circuitry built in to acquire
the Caller ID information from the C.O. Below is a brief description of these parts.
RAM 2 Card
This card contains 512 Kbytes of Random Access Memory (RAM)
and a Real Time Clock (RTC) circuit. All data relating to Caller ID
are stored on this card and are protected in the event of a power
loss by a nickel cadmium (NI-Cd or NICAD) battery for up to 30
days. The amount of memory in this RAM card is twice that in
the RAM 1 card because some of the Caller ID features such as
the abandon list, review lists and translation table are very memory
intensive and require lots of RAM.
MISC 2 Card
The MISC 2 card carries the Caller ID decoder circuits that will
convert the FSK information received from the Central Office
into a form that can be understood by the DCS COMPACT system. In addition, the MISC 2 card also carries all of the circuitry
contained on a MISC 1 card such as a second MOH input and
page zone relays. This card is used instead of a MISC 1 card in a
Caller ID system.
Caller ID Software
The special version of Caller ID software for the DCS COMPACT consists of four EPROMs. Each EPROM contains four
megabits of information giving a total of 16 megabits or two megabytes (2 Mb) of information. They contain the system operating
program, all of the standard DCS COMPACT features and the
additional Caller ID features. These features are listed and described
below.
z Name/Number Display z CID Review List
z Next Call z Investigate
z Save CID Number z Abandon Call List (50)
z Store CID Number z CID on SMDR
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Caller ID Feature
List
Caller ID Feature
Descriptions
z Inquire Park/Hold z Number to Name
Translation (250)
Name/Number Display
Each display keyset user can decide if he/she wants to see the
CID name or CID number in the display while a call is ringing.
Regardless of which one is selected, the NND key may be
pressed to view the other pieces of CID information.
Next Call
In the event that the user has a call waiting or a camped-on call
at the keyset, the user can press the NEXT key to display the
Caller ID information associated with this call in queue at the
station. If the user has multiple calls in queue, repeatedly pressing the NEXT key will allow him/her to scroll through all of
these calls. An ANS (answer) option is shown in the display to
allow the user to answer the call that is currently displayed.
Either the CID name or CID number will show in the display
depending on the NND selection.
Save CID Number
At any time during an incoming call that provides CID information, the user may press the SAVE key. This saves the CID
number in the Save Number Redial feature. Pressing the SAVE
number redial key will then dial the CID number providing
that the system has LCR correctly set up to modify the Caller
ID number as necessary.
Store CID Number
At any time during an incoming call that provides CID information, the user may press the STORE key. This saves the CID
number as a speed dial number in the user’s personal speed dial
list. The system must have LCR correctly set up to modify the
Caller ID number to allow it to be dialed.
Inquire Park/Hold
Having been informed that an incoming call is on hold or has
been parked, the user may view the Caller ID information before he/she retrieves the call. While examining the Caller ID
data for this call, the user will see an option to answer the call
(ANS). This will allow the user to determine who is calling and
handle the call appropriately.
CID Review List
This feature allows display keyset users to review CID information for calls sent to their stations. This list can be from ten
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to fifty calls on a first-in, first-out basis. The list includes calls
that the user answered and calls that rang the user’s station but
that he/she did not answer. When reviewing this list, the user
can press one button to dial the person back, clear the current
entry or view the rest of the Caller ID information. The system must have LCR correctly set up to modify the Caller ID
number to allow it to be dialed.
Investigate
This feature allows selected stations with a special class of service to investigate any call in progress. If CID information is
available for an incoming call, the user will know to whom this
station is speaking. On outgoing calls, the user can see who has
been called. While investigating, the user may barge-in on the
conversation, disconnect the call or hang up.
Abandon Call List (50)
The DCS and DCS COMPACT each have a system-wide abandon call list that stores CID information for the last 50 calls
that rang in on any line but were not answered. The list is accessed using the system administrator’s passcode. When reviewing this list, the user is provided options to CLEAR the entry
or DIAL the number. The user can use the NND key to toggle
between the CID name, CID number and the date and time the
call came in. The system must have LCR correctly set up to
modify the Caller ID number to allow it to be dialed.
CID on SMDR
The Station Message Detail Records report can be set to include CID name and number for incoming calls. In addition,
the SMDR report can also record any abandoned calls like the
abandon list. This format expands the print out to 113 characters. A wide carriage printer or an 80 column printer set to the
condensed print option must be used.
Number to Name Translation (250)
The system provides a translation table for 250 entries. In the
case of systems that are receiving number only service when
the CID number is received, the table is searched. When a match
is found, the system will display the corresponding name. This
will allow users in areas that do not support Deluxe Caller ID
to provide names for regular callers.
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Samsung Telecommunications America, Inc.
Printed in USA SG-DCS/DCSC-01 06/95
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