Comdial Dsu II Digital Telephone System Instructions Manual

							Unanswered Call Transfer Recall Timing
A transferred call that is unanswered after a pre-programmed length of time will return to
the station that transferred it. The system will return the call to both attendant stations
when the tandem attendant feature is enabled. When LCD speakerphones are employed,
the display will show the station number or name as well as the line number that is being
re-called. The system class of service programming determines the recall time for an
unanswered call transfer.
Unscreened Call Transfer
A user can transfer a call to another station without first announcing it. The transferred
call will camp-on to the other station where it will ring and await an answer. The call will
automatically ring back to the transferring station after a programmable recall period.
There is no limit as to how many calls users can camp-on to another station. A
transferred call will only ring if the station is idle. If the station is busy, the call will wait
until it is idle before it rings. The programmer can use the system class of service
programming to set the recall time for an unanswered transferred call.
Call Waiting Tone
A telephone user can signal a busy station with the call waiting tone to indicate that he or
she wishes to contact them. Users dial a special code to activate the call waiting tone.
Caller ID
The central office sends Caller ID data along lines assigned to the Caller ID service.
Caller ID information is displayed at a system LCD speakerphone only if the
programmer assigns that telephone to the Caller ID service, and then only for those
Caller ID lines that are assigned to that station and arranged to perform as follows:
·ring audibly
·can be answered by user pressing button for the ringing line
·are transferred to the station.
The station receives Caller ID data between the first and second rings. A programmer can
enable the first ring for a line assigned to Caller ID to be either audible or silent.
Selecting the “silent” option ensures that the Caller ID data is displayed prior to ringing,
nearly eliminating the loss of Caller ID data.
Station users may automatically retrieve and dial the last Caller ID number displayed at a
station by using a preprogrammed SAVE recovery button. Because the programmer can
store the local area code and up to 100 6-digit area code and local office codes, ten-digit
Caller ID numbers can automatically be transformed into a format that can be dialed.
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							(seven-, eight-, and eleven-digit Caller ID numbers are already in a format that can be
dialed and do not need to be transformed.)
The system will dial those numbers that are present in the 6-digit table as local calls even
if they are in different area codes.
All Caller ID features require that the Caller ID decoder device (product code CID08)
deliver Caller ID data to the system’s RS-232 data port B. The programmer must
configure this port to match the output of the Caller ID decoder device. The
recommended configuration is 9600 baud, with eight data bits and one stop bit. The
programmer must use VDT programming to do this.
Caller ID distribution is in the form of messages which specify the Caller ID data for
lines with incoming calls, and identify the stations answering such lines. The data is in
the ASCII format and is suitable for use with PC-based application programs.
Calling Station Identification On BLF
If a user has stored the station number of a calling station into the direct station
select/busy lamp field (DSS/BLF) of his or her station, the flashing of the corresponding
BLF light will identify the caller. The BLF lights also indicate the status of the DSS
telephone using the department pilot number.
Class Of Service
Block Programming
A programmer can assign a particular line or station’s class of service to an entire block
of lines or stations with one programming action. This feature eliminates the need for
him or her to individually program stations and lines with the same class of service. A
programmer can perform a block programming class of service after he or she has
programmed a station class of service or line class of service for a particular station or
line.
Class Of Service Programming (From Main Station)
Class of service (COS) programming is used by the installer/programmer to configure
and assign all system, line, station, and special purpose operating features. The
installer/programmer enters COS programming by dialing an access code over the
intercom line. System administrators can enter COS programming with another code to
reprogram any system, station, or special purpose operating feature that may require
change at a later date. Line reprogramming ability is not available through system
administration programming. The system attendant can reprogram certain system-wide
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							features that require periodic change by entering COS programming with another code
provided for this purpose. The station user can program individual stations for speed dial,
autodial and direct station selection (DSS) by entering COS with a code provided for that
purpose. Thus, COS programming is arranged with a hierarchical order from the highest
(the installer/programmer) to the lowest (the station user) level with a higher level
programmer having the ability to do anything a lower level programmer can do without
exiting a current programming mode. However, only the station user can program the
speed dial and autodial locations at a telephone.
All class of service (COS) programming is performed from station 10 or 12. Any station
and console combination will function in this mode and provide visual feedback with the
LED associated with the programming button. By employing an LCD speakerphone,
however, the programmer will have the benefit of display prompts and verifications to
simplify and clarify the programming procedures.
Flexible Station And Line Class Of Service Control
The extension number of a station and all other programmable attributes that are initially
assigned to a particular station port and the line, along with all programmable line
attributes that are initially connected to a particular line port can be re-assigned to a
different port through programming action. This feature allows adds, moves, and changes
without re-locating the station and line wiring. A programmer can use line and station
class of service programming are used to reassign stations and lines.
Class Of Service Programming (From Video Display Terminal)
A programmer can use an asynchronous, serial data terminal with an RS-232 interface to
effect class of service programming through menu-driven procedures. For more
information on VDT programming, see section 3.2.2
Class Of Service Program Printout
The common equipment provides serial data ports that the installer can use to interface
an RS-232 compatible, asynchronous serial data printer to the system. The connected
printer will provide a printout of class of service and toll restriction records. The
programmer can use the data printer service class of service programming procedure to
specify the nature and extent of each requested printout. He or she can use the system
class of service programming to specify the bit-length and baud rate of the data.
Default Functional Program
At initial power-up, the system sets the operating features to a specific group of operating
conditions (default conditions). The default conditions provide a complete operating
system for normal use. The installer can leave the system defaulted or reprogram as
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							desired. After a programmer has reprogrammed a system, he or she can re-default it by
using the system, line, and station class of service programming or use a master clear to
default the entire system and erase all stored programmable button information.
Remote Programming And Administration
Both remote class of service programming and the transmission of SMDR data for
printing are available through serial data ports. The system supports X-on X-off terminal
control codes as well as a DTR signal for handshaking. The system data communications
operates per the popular XMODEM protocol. The database can be uploaded or
downloaded, error free, from or to a remote computer that is running software that
supports the XMODEM protocol. The two serial data ports allow VDT programming
(either local or remote) to be conducted through one port at the same time that the other
port is being used to send SMDR data for printing. VDT programming of the system is
menu driven.
Common Audible Ringer Interface
Connections are available at the common equipment that provides “dry-contact” relay
closures whenever an incoming line rings. These contact closures track the ringing
pattern and can be used to control an external signaling device.
See also,Ringing.
Conferencing
Add-On Conferencing
With this feature, a user at a station that is operating in a private mode can add up to
three other stations to an outside call.
Multiline Conferencing
This feature will allow one station to access up to four outside lines at the same time
resulting in a conference arrangement. The user employs the transfer/conference button
to effect the conference.
Unsupervised Conferencing
After a user has established a conference between an internal party and a maximum of
two external parties, this feature allows the internal party to drop out of the conference by
dialing a special code. The conference between the two outside parties continues in an
unsupervised condition.
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							Console Support
The digital telephone system supports the installation and use of a DSS/BLF console at
any available station port. The number of installed consoles is limited only by port
availability; however, since a console complements a companion telephone located in an
adjacent station port, the installer can use up to one-half of the available station ports for
consoles. In addition with the dual console feature (discussed later), a full two-thirds of
the total station port capacity is available for console use.
The installer can assign two consoles (usually two 32-button consoles) to one telephone
using one station port each. This feature is especially useful when used with a G1632
system that has one or two GM408 expansion modules included with it. The installer can
place the first console at the station port that is logic-paired with the station that he or she
wishes to complement. The installer can put the second console at any station port except
10 or 11 and use class of service programming to assign it to the station port that is
logic-paired with the first console.
The installer can put a console at any station port and assign it to a station without first
installing a console at the station’s logic-paired port. This configuration is convenient for
adding a console to an existing telephone installation that already has its logic-paired port
occupied; however, one must not use this configuration for assigning a console to station
ports 10 and 12 because the console buttons will not be usable for programming.
As discussed above, this feature is also useful for adding a second console to a station
that already has a paired console installed with it.
The digital telephone system automatically recognizes a console when it is connected to a
station port and automatically assigns station intercom numbers to the console buttons for
direct station selection (DSS) purposes with associated busy lamp field (BLF) status
lights. However, the console buttons are fully programmable and the station user can
customize them as he or she sees fit by programming them as DSS buttons or as
automatic dialing (autodial) buttons. When the user programs the buttons for DSS use,
autodial capability is also available at a secondary level at each DSS button. The first 48
buttons on a 64-button console are programmable for DSS and/or autodial use.
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							While the first console (the one installed at the logic-paired port) extends the autodial
buttons of the paired telephone by 48 and provides DSS/BLF coverage for station ports
10 through 57, the second console (the one installed at the programmed station port)
provides DSS/BLF coverage as follows:
·On a 32-station system with two 8-station expansion modules, the first 16 buttons
are automatically assigned (defaulted) to station ports 42 through 57 for DSS
purposes.
·On a 32-station system with one 8-station expansion module, the first 8 buttons are
automatically assigned (defaulted) to station ports 42 through 49 for DSS purposes.
·On any other smaller station capacity system, all buttons are unassigned.
When an installer installs a console and programs it to complement a telephone without
first having a console installed at a port that is logic-paired to that telephone, its button
assignment is automatically defaulted, as described above, but the user can reprogram it
as required. It is important to remember that when a programmer programs for a second
console, the system sets the console button mapping to that which is described above.
When a programmer clear the assignment, the system resets the button mapping to match
a logic-paired console. This means that when the second console feature is cleared, the
console installed at that port complements the telephone that is installed at its
logic-paired port instead of the telephone that is located at the program designated port,
and its buttons are automatically reassigned to stations 10 through 57.
D
Data Interface Unit
The Data Interface Unit (DIU) is a device that provides the capability to plug an Industry
Standard Telephone (IST) or another device (such as a FAX machine or modem) into the
digital station port of a Digital Service Unit (DSU).
The DIU functions as a switch that connects the DSU station voice channel to either the
digital proprietary phone port (connector labeled “PHONE”) or the IST port (connector
labeled “FAX/MODEM”). The IST port can be used to provide a data connection for a
FAX or modem. It can also be used for virtually any IST device such as a cordless
telephone or answering machine.
In addition to the power connector, the DIU has a connector for a digital multiline
telephone (Impactor DigiTech), and another connector that you can use for any one of
the following on-premise devices:
·Industry Standard Telephone (IST)
·facsimile machine (FAX), or
·modem.
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							The user controls the DIU by pressing a preprogrammed DATA button on his/her digital
telephone. The installer can also program a DATA button on a remote telephone that can
control the DIU as well. The DATA LED on the digital telephone provides the user with
visual feedback on DIU status.
The system administrator can program up to three security groups and assign them to
work groups. This safeguards stored data on IST devices such as personal computers by
denying access to users from outside the group. For example, if a caller in security group
1 calls a station in security group 2, and the IST device on the DIU at the called station is
selected, the caller will hear a busy tone. When the multiline telephone on the DIU is
selected instead, the caller can make a station to station call in the normal manner.
The DIU will operate reliably at baud rates up to 9600 (outside calls) and 14400
(intercom calls).
Data Security
This data security feature will prevent any type of tone (DTMF, camp-on, barge-in, etc.)
from interrupting a call that is active on a port programmed with the feature. This
prevents interference to non-voice communications from occurring when the port is
being used as a data port (when operating a modem through an ATI-D port for, example).
The programmer can use station class of service programming to enable a data security
port.
Default Functional Program
At initial power-up, the system sets the operating features to a specific group of operating
conditions (default conditions). The default conditions provide a complete operating
system for normal use. The installer can leave the system defaulted or reprogram as
desired. After a programmer has reprogrammed a system, he or she can re-default it by
using the system, line, and station class of service programming or use a master clear to
default the entire system and erase all stored programmable button information.
See also,Class Of Service.
Default Toll Restriction
The system defaults two toll restriction tables with pre-programmed values and
pre-assigned to all lines. The programmer needs only to assign these tables to the stations
by programming action to put them into effect. He or she can use the toll restriction table
configuration class of service programming to reprogram the defaulted tables with
different information as needed.
See also,Toll Restriction.
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							Delayed Ringing
Ringing assignments are programmable. A station can be programmed to provide
delayed ringing on some lines while providing immediate ringing on other lines.
Delayed ringing is assigned to certain lines at each station through station class of service
programming. When a programmer assigns delayed ringing to a station for certain lines,
he or she can also assign the time length of the delay.
See also,Ringing.
Departmental Calling Distribution (DCD) Report
Refer to the discussion titled Direct Department Calling With Departmental Call
Distribution (DCD).
Designated Programmable Buttons
Designated programmable buttons are those that the programmer assigns to a station
using the button mapping procedures that are a part of station class of service
programming. These buttons provide one-button access to a broad range of features.
While the programmer must assign most designated buttons, the station users can assign
the auto redial button and the response message button themselves.
Dial 0 For System Attendant
The system attendant station (station 10) is signaled whenever anyone dials the digit 0 on
the intercom line.
Dial By Name
The Dial By Name feature allows users to employ any two-line display, LCD
speakerphone to search through an index of names and automatically call the located
name.
By pressing theoptionbutton, users enter the Dial By Name menu. From that menu, they
either press theintbutton for intercom calling or theextbutton for speed dial calling,
and then dial three digits for the first three letters of the name they want to locate. The
system displays the first match to the dialed digits that it finds. The user can then either
press thedialbutton to make the call to the displayed location or press thenextbutton to
display the next name in the index.
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							The Dial By Name feature uses the seven-character station names associated with the
station ports for searching through the list of stations for intercom calling. 16-character
names are used for searching through the list of system speed dial entries.
When users make a sequential search through the stored index of names, the system
searches the list as it was entered. Programmers or system attendats must arrange the list
in the desired sequence as they store the entries.
Digital Voice Announcing
Digital voice announcing uses a hardware peripheral device (product code DVA01)
connected to a digital station port to play recorded messages during an in-progress call.
The DVA stores the messages in its memory for recall when needed. The system
attendant stores messages in the DVA device by delivering them from the telephone
handset of station 10 or 12 or by playing the contents of a professionally-supplied tape
recording into the DVA memory. When enabled by the DSU II, the DVA provides up to
four messages. The total available message time is two minutes. With each DVA
servicing one outside line, the system installer can add several DVAs to enable the digital
telephone system to answer several lines with digital voice announcing.
While the DVA is not an automatic attendant, it enhances the following features: direct
department calling with departmental calling distribution (DCD), direct inward station
dialing (DISD), and Tracker Paging System. DVA enhances these features by providing
automated voice prompts and dialing instruction to callers. In general, the voice prompt
messages of of four categories illustrated in the following examples:
Day Answer Messages
For DCD callers—“Welcome to Acme’s sales department, all of our agents are busy.
Please stay on the line and an agent will answer your call as soon as possible.”
For DISD callers—“Welcome to Acme Company. If you know your party’s extension,
dial it now; otherwise, stay on the line and an attendant will answer your call.”
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							Night Answer Messages
For DCD callers—“Welcome to Acme’s sales department. Our hours are eight to
four-thirty. Please call tomorrow during those hours.”
For DISD callers—“Welcome to Acme Company. Our hours are eight to four-thirty.
Please call tomorrow during those hours.”
Recall Messages
For DCD callers—“Please hold. An agent will be with you as soon as possible.”
For DISD callers—“The party you have called is not available. Please dial a new
extension number.”
For DISD callers in systems that have the Tracker Paging System installed—“The party
you have called is not available. Please dial a new extension number or dial # plus your
call-back number followed by another # to page your party.
Drop Message
—“Thanks for calling Acme, good-bye.”
Typically, the DVA services a DCD call in the following manner:
1. A caller rings a department line.
2. If all department stations are busy, the DSU answers the call and triggers the
DVA to play the day or night answer message. The DSU transfers the line to the
department if the system is in the day mode or drops the line if it is in the night
mode.
3. A transferred line recalls to the DSU after a transfer recall time, and the DVA
plays a recall message to the caller. The DSU transfers the call once more to the
department. This action repeats for a programmed number of times.
4. After the last recall, the DVA plays the drop message and the DSU drops the line.
Typically, the DVA services a DISD call in the following manner:
1. A caller rings a DISD line.
2. After a programmed number of rings, the DSU answers the call and triggers the
DVA to play the day or night answer message.
3. The DSU decodes the digits that the caller dials and rings the station or
department dialed by the caller. Should the caller dial an incorrect extension, the
DSU sends an error tone and asks the caller to dial the code again.
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