Comdial DIGITECH Digital Telephone System Instructions Manual

							on a call. A station being operated in a handsfree
mode cannot receive a SOHVA 
Wflh SOHVA, the
announcement is delivered and responded to in a
secure manner that prevents the distant party from
hearing either the announcement or the response. The
announcement is preceded with a tone alert and is
delivered to the handset receiver of the telephone. The
announcing caller receives a tone alerting them that
they are making a SOHVA call. Response to the
announcement can be verbal or non-verbal. Verbal
response is effected by pressing and holding the
MLJTE button and speaking into the handset.
Non-verbal response is effected by pressing a
pre-programmed programmable button to send a
message to be shown on the display of the
announcing station (if it is an LCD speakerphone). The
announcing station is automatically disconnected after
the message is delivered to 
tt (and displayed if an LCD
speakerphone). Stations that have the voice announce
blocking feature turned on cannot receive a SOHVA
Station class of service programming is used to
disable the SOHVA feature at a station port if desired.SECURE OFF-HOOK VOICE ANNOUNCE
ORIGINATE 
BUlTON
This feature allows a telephone user to program a
button at their station that must be pressed to enable
the delivery of a SOHVA call. This SOHVA enabled
button allows the caller, after hearing a busy signal, to
decide whether the called party should be interrupted
in a SOHVA manner. If they should, the button can be
pressed and a SOHVA call completed. This button,
along with SOHVA groups allows system users greater
control of the callers that are allowed to make a
SOHVA call and of the situations that SOHVA calls are
allowed. Refer to the discussions titled: Secure
Off-Hook Voice Announce, and Secure Off-Hook Voice
Announce Groups.SECURE OFF-HOOK VOICE
ANNOUNCE (SOHVA) GROUPS
The ability of a station port to originate an&or receive
SOHVA calls can be arranged by class of service
programming with the assignment of SOHVA calling
groups to station ports. This means that certain station
ports can be arranged together for SOHVA calling
between one another while other station ports in the
system are excluded from this group.
Eight different SOHVA groups are provided by the
system. They are fixed into a variety of SOHVA
receive/originate configurations. One SOHVA group
can be assigned to each station port to allow or to
deny SOHVA receive and/or originate capability to 
1.
By properly assigning SOHVA groups to station ports,
SOHVA paths between stations can be opened or
lMl66-083Description Of System Fea:
blocked.
The m no SOHVA ~JWJB
R does not havu
SOHVA V It. It tamxkW@SOHVA 
calls to anjm.Wm pound receive SDHVA
calls.
SOHVAgroups are &6d by the system into the
following configurations:
Example 1: Allow station port 10 to originate SOHVA
messages to all stations in the system and allow those
stations the ability to originate SOHVA messages to
each other but not to station port 10. Assign group 1
to station port 10 and assign group 2 to all other
station ports.
Example 2: Allow station ports 14 and 15 to receive
and originate SOHVA calls between each other but
deny both receive and originate capability from any
other system stations. Assign group 8 to both station
port 14 and station port 15. Do not assign group 8 to
any other station port 
hrrt be m
tothem.
The SOHVA groups are assigned in station class of
service programming. 
Atso refer to the discussions
tttiled: Secure Off-Hook Voice Announce, and Secure
Off Hook Voice Announce Button.2-15 
						

							SELF DIAGNOSTICSEach station can execute a self test when so enabled.
This test verifies processor, indicator, and tone
functions.
SERVICE OBSERVING
Service observing allows a third party to enter an
in-progress call in an unannounced muted mode to
monitor the conversation. There will be no warning
tones sounded when the call entry is made. This
feature is useful in allowing a supervisor to monitor the
performance of an employee during a phone
conversation with a client.For a station to provide the
service observing feature, the executive override
feature is automatically enabled when the service
observing feature is enabled. Service Observing can
be blocked by class of service programming on a
station basis. Use station class of service programming
to give a station service observing (and executive
override) or block this feature.
SPEAKERPHONE SUPPORT
The optional speakerphone provides handsfree
operation of all features, except voice-signalled
intercom calls. The handset must be lifted for this
purpose.SQUARE/NON-SQUARE
CONFIGURATION
A system can be programmed to be square or
non-square as desired. In a square system, the line 1
buttons of all telephone stations select line 
1, the line 2
buttons select line 2, etc. In a non-square system,
each line select button at every station may be
assigned individually to select any line. Button
mapping for line appearance can be performed on
each station using the station class of service
programming.STATION BY STATION PRIVACY
See the discussion titled: AutomaticPrivacy.STATION MESSAGE DETAIL
ACCOUNTING (SMDA)
See the discussion titled: Call Costing and SMDA
Reporting.STATION 
MESSA(EbEDEAIL RECORDING
The SMDR feature generates a call record for printing
as soon as the record is collected by the system. The
call record is presented at an W-232 level as ASCII
transmit data in an 
80-column format at the data port
available for that purpose.Refer to the discussion
titled: Call Costing and SMDA Reporting.STATION MONITORING WITH
DSS CALL PICKUP
The busy lamp field (BLF) of a station can provide
visual indication of the idle, busy, and ringing status of
monitored stations. Audible indication of direct and
delayed ringing can also be provided if visual ring
indication is enabled.
A one-button pickup of a ringing call at a 
monitored
station can be made at the monitoring station by
pressing the direct station selection (DSS) button
associated with the ringing station.
The flashing BLF lights associated with visual ring
indication can be enabled or disabled on a
system-wide basis. When enabled, the audible
indication of ringing can then be enabled on a
station-by-station basis. Enable or disable visual ring
indication on a system-wide basis with system class of
service programming. Enable or disable audible ring
indication on a station-by-station basis with station
class of service programing.STATION SPEED DIAL
Each station can be programmed to provide 10 speed
dial numbers at the buttonpad buttons. Station speed
dial numbers can be up to 
18 digits in length and can
include line or intercom selection, numbers, 
#, S,
pauses, and flash signals. A pause is stored each time
the HOLD button is pressed, and a flash signal is
stored each time the TAP button is pressed.STATION-TO-STATION MESSAGING
If a station has a DSS/BLF appearance at another
station, a callback message indication can be left at
that station with the 
DSS/BLF appearance. By dialing
a special code, the BLF light at the called station that is
assigned to the calling station can be activated. This
light indicates that a callback is requested. The light is
automatically turned off 
tf a successful callback is
made.
If a station number is not programmed for a 
DSS/BLF
appearance at another station, attempting to place a
call back message will cause the central message desk
station to ring.
lf there is no central message desk
assigned, no action will occur.
.&ion of System FeatureslMl66-0832-16 
						

							SUBDUED RINGING
When a station is busy on a call and another call
comes to the same station, the ringing of the second
call will automatically be subdued to a lower volume.SYSTEM ALARM REPORTS
The system can be arranged to report alarm and status
conditions to a particular station or stations that have
been enabled to receive them. The station must be an
LCD speakerphone for this feature to be used. When
enabled to receive alarms, the station user can take
appropriate action to cause the alarm codes to be
presented on the LCD display. System and station
class of service programming are used to enable this
feature.
SYSTEM SPEED DIAL
Ninety-nine system-wide speed dial numbers are
provided. 
The system speed dial numbers can be up
to thirty-two digits in length, and can include numbers,
# ‘s, S’s, pauses, and flash signals. System speed dial
numbers are programmed at station 10 or 12 for use at
every station in the system. No class of service is
required.TANDEM ATTENDANT
When the tandem attendant feature is enabled, a recall
from an unanswered call transfer or a timed hold recall
will ring at the normal attendant station (station 10) that
set the transfer or hold condition, and also at the
tandem attendant station (station 12). System class of
service programming is used to enable the tandem
attendant mode.TAP 
(FLASH)/RECALL
When host system custom calling features are
available via a hookflash signal, the system can be
programmed so that the TAP (RECALL) button will
generate a “flash” signal when it is pressed. When
custom calling features are not available, the TAP
(RECALL) button functions as a positive disconnect, or
dial tone, recall button. These two features are
mutually exclusive. The 
flasNrecall/tap time is
assigned through system class of service
programming.
TENANT SERVICE
One telephone system can be used for multiple
tenants at a location by having flexible line appearance
at each station. Button mapping for line appearance
can be performed on each station using the station
class of 
se&e programming.
Refer to the discussion
titled: Square/Non-Square Configuration.
lMl66-063Description Of System Fea:TIMED HOLD RECALL
After a call has been on hold for a programmed length
of time the system will recall the station that placed
the call on hold. The system class of service
programming sets the timed hold recall time period.TOLL RESTRICTION (0 AND 1)
See the discussion titled: To// Restriction (flexible).
TOLL RESTRICTION (FLEXIBLE)
System toll call restriction can be configured to
prohibit some or all stations from calling a wide range
of number combinations. The restricted numbers are
specified on up to 16 tables. The system assigns
several broad-range values to two of these tables, and
assigns the tables to all lines as a default condition.
The default tables need only to be enabled on a per
station basis to activate the default toll restriction.
In general, toll restriction works as follows:
The programmable tables of restricted numbers
contain up to four entries with each entry containing
up to 16 digits.
Each table of restricted numbers can be programmed
to be an “allow” table or a “deny” table with entries in
an “allow” table overriding entries in a “deny” table.
This arrangement allows exceptions to toll restriction
to be enabled. For example, the dialing of
l-600-xxx-xxxx numbers can be allowed even though
the dialing of all 1-xxx-xxx-xxxx numbers is denied.
A “match anything” symbol (# ) can be stored to
represent any digit from 0 to 9. The programmed toll
restriction tables are individually assigned to each
appropriate station and line. When an outside call is
dialed, the system examines the dialed number and
makes a comparison between 
ft and the toll restriction
tables. Any tables assigned to BOTH the station being
used and the selected line determine the restrictions to
be imposed.
Dialing a restricted number on a restricted line from a
restricted station will cause the line to be automatically
disconnected from the station.
Toll table class of service programming is used to
create the tables of restricted numbers.TOLL RESTRICTION (NIGHT MODE)
Toll restriction tables that will only take effect when the
system is in the night transfer (of ringing) mode, can
be assigned to any or all stations in the system. These
toll tables replace any that may be assigned to the
station during normal, or day mode, operation. For
example: A station that has no other toll restriction
table assigned to it can be programmed to receive a
toll restriction table which will restrict everything but2-17 
						

							,lron Of System FeatureslMl66-083
local calls and will only take effect when the system is
placed in the night transfer (of ringing) mode.
Therefore, even though toll calls can be made 
from this
station during daytime operation, no toll calls can be
made from it when the attendant programs the system
for nighttime operation using the night transfer of
ringing feature.
NOTE This night mode 
roll restriction table
assignment should nor be confused 
with the
night transfer (of ringing) feature.
Toll restriction class of service programming is used to
program the night mode toll restriction tables and to
assign them to the stations.TONE OR VOICE
SIGNALLING (INTERCOM)
Intercom calls can be tone signalled or voice signalled
as desired.
Programming determines the signalling method
employed as the primary method when an intercom
call is made. The 
atternate method is available through
user action at the station. Intercom call progress is
marked by special tone signals. 
Also refer to the
paragraph titled: 
lnrercom Call Progress Tones. The
system class of service programming determines
which type of intercom signalling is first option
signalling for the system.TRANSFER/CONFERENCE 
BUlTON
A fixed button is provided that gives quick, easy
transferring and conferencing.
UNANSWERED CALLTRANSFER RECALL TIMING
A transferred call that is unanswered after a
pre-programmed length of time will return to the
station that transferred ft. 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 recalled. The system class of serviceprogramming determines the recall time for an
unanswered call transfer. Refer to the discussion
titled: Tandem 
Arrendanr.VOICE ANNOUNCE BLOCKING
This feature allows station users to block voice
announced intercom signalling by pressing a
programmable button programmed for that purpose.
The programmable button used to block voice
signalling is enabled by station class of service
programming.VOICE MAIL TRANSFER ON BUSY
When using ExecuMail, a busy station may desire to
be alerted if ExecuMail is attempting to transfer a call
to that station. This feature allows a station to be
programmed for this option. With this option, when
ExecuMail tries to transfer a call to a station that is
busy on a call (outside or intercom call) and the station
has an available intercom line (stations can be
programmed to have a second intercom), the intercom
will ring subdued. The call can be picked up by
pressing the button of the ringing intercom line. In
general, attendants will probably desire this feature so
they can handle multiple calls, while other station users
may prefer to have a message taken when they are
already busy on a call.ZONE PAGINGVIA STATION
IISPEA ERS)
Zone paging allows groups of stations to receive
announcements through the station speakers. The
programming can enable zone paging in up to four
different zones. Zone paging can also be received at
the paging 
port where it can be connected to the input
of an external paging amplifier. The 
ability of each
station to originate and/or receive a page and the
arrangement of the paging into different zones are
contrclled by station class of service programming.
Zone paging through the paging 
port is enabled by
system class of 
ser.&e programming. Also refer to the
discussion titled: 
A//-Call Paging (Via Station
Speakers) 
						

							IMI 66-083Installs
CHAPTER 3
INSTALLATIONSECTION 1
STANDARD INSTALLATION DETAILS
MOUNTING CONSIDERATIONS
The common equipment cabinet should be attached
vertically to any sturdy, flat surface. It may be
vertically rack-mounted if desired.
The cabinet must be located within six feet of a
proper electrical outlet. The system requires a
dedicated 
117VAC 15 AMP circuit, with a third-wire
ground, supplied to a standard electrical outlet(NEMA 
5-15R).
The distance between the common equipment and
the TELCO/PBX jacks must be 25 feet or less as
per FCC requirements. A nominal distance of 7 feet
is recommended.
The mounting location must be secure and dry and
have adequate ventilation. The temperature range
of the location must be within 32-l 22 degrees F
(O-50 degrees C), and the relative humidity must be
less than 90 percent non-condensing.
If the mounting surface is damp or if it is concrete or
masonry material, a backboard must be attached to
the mounting surface to be used for common
equipment mounting. Suitable mounting
backboards are available commercially or can be
constructed out of 
in-inch plywood cut to size.
SPECIAL MOUNTING CONSIDERATION
When the battery back-up is to be included as part of
the installation, the optional external batteries, cable
assembly, the common equipment, and the wiring
connections must be located in a dedicated equipment
room (as defined in the National Electric Code
published by The National Fire Protection Association,
Quincy MA, 02269).TOOLS AND HARDWARE
Fasteners - wood screws (l/4 x 1 -inch round
head), toggle bolts, or -wall anchors
Screwdriver-to match fasteners
Electric drill 
- if prepared holes are required
1.
2.
3.
4.
5.
6.
7.
8.
l Connecting tool - for fastening wires to a type-66
connector block.
l Crimping tool - for 623-type modular plugs
MOUNTING PROCEDURE
Unpack and carefully inspect all equipment for
shipping damage. Notify the shipper immediately
of any damages found. Verify that the packages
contain all parts and accessories needed for proper
installation and operation.
If a backboard is required at the mounting location,
attach it securely to provide a stable mounting
surface for the equipment.
Refer to 
Flgure 3-l for the locating dimensions
required for the three mounting screws, and mark
their locations on the mounting surface.
Drill holes in the mounting surface of a proper size
to accommodate the hardware being used. If
necessary, prepare these holes with inserts,
anchors or other attachment devices as dictated by
the type of mounting surface.
Insert the two top screws into the mounting surface
and tighten them to within approximately 
l/8-inch
of the surface.
Hang the cabinet on the top screws using the
mounting holes located on the rear of the cabinet.
Note that these holes are elongated with an
enlargement at one end. This feature allows the
cabinet to snap down on the screws to secure the
mounting when the cabinet is hung on them.
Insert a third screw through the mounting tab
located on the lower edge of the cabinet and into
the mounting surface, and tighten it into place.
Place the individual telephone stations as desired
and in keeping with accepted industry and off ice
standards. A telephone station can be wall
mounted if necessary as they are desk/wall
reversible. Refer to Chapter 6, Maintenance, for
instructions in preparing a desk/wall reversible
station for wall mounting. 
						

							don--IMI 66-083
4-Line, &Station Base Unit
&Line, 1 &Station
16-Line, 32-Station
Base Unit
Base UrlR
Figure 3-l. Mounting Dimensions 
						

							IMI 66-083Instal’.
AC POWER CONNECTION
Employ a dedicated 117VAC 15 AMP circuit, with a
third-wire ground, supplied to a standard electrical
outlet (NEMA 
515R) for the AC power connection. AC
power connection is illustrated in Figure 3-2 shown
below.
l A plug-in power line surge protector should be
installed between the power cord and the AC outlet.
l Do not connect the AC power cord until the
installation has been checked.
l To apply AC power, connect the power cord to the
electrical outlet.BATTERY BACK-UP
The common equipment provides an interface
connector for the connection of an optional external
battery assembly. This assembly is available
separately as a kit.
Be sure that the AC power cord Is
connected to the electrical outlet before
connecting the external battery assembly
to the common equipment interface
connector. 
This ensures that internal
protection circuitry Is operating to prevent
damage that could result from Improper
connection.
l The optional Comdial model BBU02 external battery
assembly provides a minimum of one hour of
operation should the AC power to the system be
interrupted. The BBU02 assembly has a 15
ampere-hour current rating.
The BBU02 external battery assembly may include
batteries from either of the following suppliers:
- Model PS-12150 from Power-Sonic Corporation,
Redwood City CA, 94032.
- Model PEl2V15 from GS PORTALAC, City Of
Industry CA, 91748The minimum battery backup time for a fully
configured system can be calculated. The formula for
doing this is:
T = 1 + [(0: (N)]
T = Back-up time in hours
K = Constant
0.9 for CO408 with or without a CM408 module
0.8 for CO816 with or without CM408 modules
0.8 for Cl 632 with or without CM408 modules
e = Ampere-hour capacity of battery (BBU02 = 15)
N = total number of stations
Example:
Assume that a Cl 632 system plus two CM408
modules are installed along with a BBU02 battery
assembly to provide back-up power.(0.8) (15) 12
T = 1 + [(O.l) (48)] = 5.8= 2’1 Ho”rs
l During AC operation, the common equipment
provides re-charging current to maintain the voltage
potential of the external battery assembly at an
operational level. The charging circuit may not
provide an adequate charge if an installed battery
assembly has a current rating of greater than 40
ampere-hours.
NOTE: The optional BBUO2 external battery assembly
requires 
approximarely 70 hours to completely
re-charge 
to full potential after it has been
completely discharged and, in some cases,
when initially installed.
SYSTEM GROUNDING
The common equipment cabinet has internal
secondary surge protection on all line ports. In order
for this protection to 
be effective, the cabinet MUST be
connected to a reliable earth ground such as a metal
cold water pipe or a building frame ground.The
grounding wire must be of 
#lO or #12 insulated, solid
copper and separate from the three-wire AC line cord.
A ground stud is located on the common equipment
cabinet for this purpose. System grounding is
illustrated in 
Figure 3-2,
3-3 
						

							FUSE :PLUG IN 
POKRLI NE SURGE PROTECTOR
A’ TYPICAL)
DEDICATED I 
I7VAC15 AM’ NEM4 5-15R4-LINE, 8-STATION BASE UNIT: I AMP 250V SLOW BLOW FUSE
8-LINE, 
I6-STATION BASE UNIT: 3A 250V SLOW BLOW FUSEI6-LINE, 32-STATION BASE UNIT: 3A 250V SLOW BLOW FUSE
II-------e-JI INTERFACE
ICONNECTOR
llFOR OPTIONAL
~COMDIAL
,EXTERNALIBATTERYTYPICAL-EARTH GROUND
(METAL COLD WATER PIPE,
BUILDING 
FRAME,..ETC.l
- SEE NOTE.
NOTE :
WHEN EXPANSION MODULES ARE INSTALLED ON THEBASE UNIT ATTACH A *IO OR l l2 INSULATED
COPPER WlkE BETWEEN THE OROUNDINO TEAItlNALON THE EXPANSION MODULES AND THE OROUNDINQTERMINAL ON THE BASE UNIT
Figure 3-2. AC Power Connection And Svstem Groundina 
						

							IMI 66-083lnstall-s
LINE CONNECTIONS
The line terminations for the common equipment
cabinet are standard modular plug/jack connections.
Each modular’jack provides termination for two lines.
Modular line jacks 1 and 2 also provide termination for
an auxiliary pair in addition to the two outside lines.
The outside line termination can be a type 
66M-xx
connector block or individual 6-position modular jacks.
The line cord that is routed between the outside line
termination and the common equipment termination
should be twisted-pair wiring. Table 3-1 shows the
line connection details for all three of the common
equipment base units. Figure 3-4 illustrates typical
line connections.
Transient voltage spikes, if induced onto CO or
CENTREX lines, can travel through the cable and into
the common equipment. The telephone company
offers basic protection against this condition but it is
usually designed to protect the central off ice circuits.
While it will also provide some protection to the
common equipment, it should not be relied upon for
total protection. To help ensure that external
overvoltage surges do not damage the system, it is
recommended that gas discharge tubes, or similar
primary protection devices, be installed and properly
grounded on all lines.
The outside line that is initially connected to a
particular line port along with all programmed
attributes, can be reassigned to a different port by
programming action. This feature allows adds, moves,
and changes to be made without relocating the line
wiring. Refer to Chapter 4, page 4-19 for line to line
port re-assignment.
Add-on expansion modules are available to expand
line capacity.Refer to Section 3 for complete details.STATION CONNECTIONS
The system supports the operation of the following
digital station types:
l Comdial Digital Multiline Telephone
l Comdial Digital LCD SpeakerphoneConnections between the common equipment and the
stations are typically via type 
66M-xx connector block!;
which are cable connected to the common 
equipmer,t
50-pin male connector. The connector block is, in
turn, wired to modular jacks which the stations
connect to through the line cord. The maximum
distance allowed from the common equipment to the
stations is 1000 feet using 
#24 gauge, twisted-pair
cable.
If spare conductors exist in the cables that are run
between the 
66M-xx connector blocks and the station
jacks, it is a good practice to connect them to earth
ground. as a preventative measure against radio
frequency and/or AC interference.
Only one station should be connected to a station port.
Do not bridge two stations to a single modular jack.
Table 3-2 shows the station connection details.
Figure 3-5 illustrates typical station connections.
The extension number and all other programmable
attributes of a station that are initially assigned to a
particular port can be re-assigned to a different port by
programming action. This feature allows adds, moves
and changes to be made without re-locating the
station wiring. Refer to the automatic station relocation
programming procedure found on page 4-10 and the
station-to-station programming procedure found on
page 4-50.
NOTE: The station 10 to station port 10 assignment
can nor be relocated.
Add-on expansion modules are available to expand
station capacity. Refer to Section 3 for complete
details.CABLE CLIPS
Each cabinet-mounted 50-pin male connector is
equipped with a retaining clip. This clip is designed to
secure the mated connection once it is made. The clip
does this by snapping into a slot on the cable-mounted
connector when it is pressed together with the
cabinet-mounted connector. This retaining clip must
be pulled back slightly to unsnap it before the
connectors can be separated.3-5 
						

							donIMI 66-083.-- .-
4Lh,8 Sta. Baaa Unlt8Unr,16 Sta. Base Unlt16Lhr,32 Sta Base Unlt
B Llno, 16 Sta. Base Unit16 Line, 32 Sta. Base Unlt
6 
Llna, 32 Sta. Base UnltTable 
3-1Line Connectlons
LJNE JACK 1 PINNO.
F-t+-
++-
--I+-
+
--I+-
--k-
51
2
3
4
5
6
6
1
2
3
4
5
r
Auxlllaty 1 (Llne 2) TIP
Llne2
TlP
Llne1TIP
Line
1RING
Llne
2RING
Auxlllaty 1 (Line 2) RING
Auxiliary 2 (Line 4) TIP
Llnn A TIP
Line 3 TIP
Line 5 TIP
Line 5 RING
Line 6 RING
No Connection
No Connection
Llne 8 
TlP
Line 7 TIP
Line 7 RING
Llne 8 RING
No Connectlon
No 
Connectton
Line 10 
TIP
Llne 9 
TlP
Llne 9 RING
Llne 10 RING
No Connectlon
No Connection
I
Llne 12 TIP
Llne 
11 np
I
i
Line 11 RING
Llne 12 RING
No Connectlon
No Connectlon
Llne 14 
np
Line 13 TIP
Llne 13 RING
Llne 14 RING
No Connection
No Connectlon
Llne 16 
TIP3-6