Comdial Executech 1432B KSU Instructions Manual

							INSTALLATION
AND
MAINTENANCE
INFORMATION
FOR THE
COMDIAL
Executech MODEL
1432B KSU 
						

							TABLE OF CONTENTS
Chapter 1 introduction.............................................l-l
MenualScupe........................................................1.1
Related information.....................................................1.1
StatlonTypes........................................................i.i
InatallerNaer lnformatlon Regarding FCC Rules And Ragulatlona...........................l-2
Chapter 2 lnstallatlon...............;..............................2-1
Mounting Conaideratlona...................................................2-1
Mounting Procedure....................................................2-1
System Wiring........................................................2.2
AC Power Connection...................................................2.2
ha Connectlona......................................................2-2
Statlon Connactlona....................................................2-3
Power Failure Statlon Connectlona............................................2.4
A-bad Control Device Connectlona............................................2.4
Date Device Connections..................................................2.4
System Grounding.....................................................2-S
Common Audlble
 And Auxliiary Station Interface....................................2-S
Area Paging Interface.Station PA Port..........................................2-5
Area Paglng Interface.Line Port............................................2-5
Kay SyatenVMuttifunction (Hybrid) Configuratlonc,.....................................2-5
Music Interface.......................................................2.6
Cassette Tape Recorder  Interface.............................................2.6
System Checkout......................................................2-15
Chapter 3 System Programming........................................3.1
General Information...........................................,.........3.1
Speclal Programmlng Requirements..,...................................;....3-1
Single Line Keyset..............................................................3-t
Reused BLine BLF Keyset.......................................................J-2
Class Of Service Programming With A OO-Button Or A 32.Button Console3-2
Baaa Level Program Entry Mode..............................................03-2
Cl888 Of Service Default...................................................3-2
System COS Programmlng Procedure..........................................3-3
SystemDefaults..............................................................3- 3
Procedure.................................................................3- 3
System COS Programming Reference Table.......................................3-5
Toll Reatrlction Programming...............................................3-6
TabieEntryProcedure...........................................................3.
Toll Restriction Programming Procedure.................................................3-6
Toll Restriction Programming Reference Tables.....................................3-7
Line COS Programming...................................................3-9
LineDefaults................................................................3- 9
Procedure.................................................................3- 9
*..Ill 
						

							IMI 66-074
Line COS Programmlng Reference Table.........................................3.10
Statlon Coo Programming.......,.........................................3-11
StationDefaults.............................................................3-11Procdum................................................................
-11
Statlon COS Programming Reference Tablec3.......................................3-l
COS And SMDR Printout..................................................3.18
Caeaette Tape Record Of COS Values...........................................3-20
Syatem Clock Informatlon...............i................................-3.21
System Spsed Dial Programming.............................................3-21
Programming Referonca Chart A (For Station 10 Programming With An LCD Speakerphone)............3-23
Rogrammlng Refaranw Chart B (For Station 11 Programmlng With A 22 LlnalFeature Kay8et)..........3-25
Chapter 6 Maintenance......................................;......
4-l
Technlcal Aaalatanca And Repalr Service........................................4.1
FuseLocation........................................................4- 1
Failure Iaolatlon.......................................................4-1
Failure Analysis.......................................................4-2
Desk/wall Revereal And Wall Mountlng..........................................4-4
TABLES AND ILLUSTRATIONSTable 2-1. Wlrlng For Station Connector Block J-l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Table 2-2. Wlrlng For Station Connector Block J-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . -. 2-8
Table 2=3. Wiring For Station Connector Block J-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Table 2-4. Wlrlng For Auxiliary Connector Block J-4. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Table 2-5. Wlrlng For Colpbx Connector Block J-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11Figure 2-1. KSU Mountlng Dlmenslons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Flgure 
2-2. Common AudlblelAuxlllary Station Interface Wlrlng (Typical Connection) . . . , . , . . . 2.12
Figure 2-3. PA Connectlons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Figure 2-4. System Interconnectlon-Typlcal Connections . . . . . . . . . . . . . . . . . . . . . . . . , 2-13
Flgure 2-5. Secure Off-Hook Voice Announce Telephone Connectlons . . . . . . . . . . . . . . . . . 
2=14
Figure 3-l. SMDR Printout Detalls.......................................3-19
Figure 4-l. Failure Analysis Flow Chart....................................4-3
Flgure 4-2. Statlon Wall Mounting Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
iv 
						

							CHAPTER 1INTRODUCTION
MANUAL SCOPE
This publication contains installation, programming,
and maintenance information for the Model 1432 KSU
electronic key system and associated electronic key
telephone stations.
NOTE: This manual is applicable for model 14328
KSU Rev F and later.
This key system is fully protected, and therefore the
installation does not require the services of an
authorized agent. However, the installation
procedures detailed in this manual should only be
performed by individuals familiar with general
telephone installation procedures.
The end user may perform routine maintenance
procedures, such as the following listed ones, but all
other servicing must be performed by factory
authorized personnel.
l Place or replace any designation strips on the face
of the telephone stations.
l Replace the line cord or handset coiled cord.
l Replace complete stations and station handsets.
The handset is a special Comdial type. 
Other
handset types will not work properly.
l Relocate the station when it is plugged into the
proper system jacks.RELATED INFORMATION
IMI 01-001, Compliance Requirements To FCC
Rules and Regulations 
Part 68 and 15
IMI 01-005 Handling Of Electrostatically Sensitive
Components
GCA 40-028,General Information, Electronic Key
System
GCA 70-l 34,User’s Guide for 
Muftiline Station
GCA 70.079,Usets Guide for Single Line Station
GCA 70.066,Users Guide for DSSIBLF Console
GCA 70-l 48,User’s Guide for 32.Button DSS/BLF
ConsoleSTATION TYPES
This Key Service Unit supports the operation of the
following stations:
l 22 Line/Feature Keyset
l Reused 3/8 Line Keyset
l Single-Line Keyset
l DSS/BLF Console 32.Key, 40.Key, and 70.Key1-l 
						

							inrroauctronIMI 66-074
INSTALLER/USER INFORMATION
REGARDING FCC RULES AND
REGULATIONS
This electronic key system complies with Federal
Communications Commission (FCC) Rules, Part 68. The
FCC registration label on the KSU 
contains the FCC
registration number, the ringer equivalence number, the
model number, and the serial number or production date of
the system.
NOTlFlCATlON TO TELEPHONE COMPANY
Unless a telephone operating company provides and installs
the system, the telephone operating company which
provides the lines must be notified before a connection is
made to them. The lines (telephone numbers) involved, the
FCC registration number, and the ringer equivalence number
must be provided to the telephone company. The FCC
registration number and the ringer equivalence number of
this equipment are provided on the label attached to the
KSU.The user/installer is required to notify the telephone
company when final disconnection of this equipment from
the telephone company line occurs.
COMPATIBILITY WITH TELEPHONE NETWORK
When necessary, 
the telephone operating company provides
information on the maximum number of telephones or
ringers that can be connected to one line, as well as any
other applicable technical information. The telephone
operating company can temporarily discontinue service and
make changes which could effect the operation of this
equipment. They must, however, provide adequate notice,
in writing, of any future equipment changes that would make
the system incompatible.
INSTALLAnON REQUIREMENTS
Connection of the electronic key system to the telephone
lines must be through a universal service order code
(USOC) outlet jack supplied by the telephone operating
company. If the installation siie does not have the proper
outlet, ask the telephone company business off ice to install
one. The correct outlet jack for this system is either a type
RJ21X or type R114C.
PARTY LINES AND COIN LINES
Local telephone company regulations may not permit
connections to party lines and coin lines by anyone except
the telephone operating company.
TROUBLESHOOTING
lf a service problem ocx:urs, first try to determine if the
trouble is in the on-site system or in the telephone 
company
equipment. Disconnect all equipment not owned by the
telgphone company.
tf this corrects the problem, the faulty equipment must not be
reconnected to the telephone line until the problem has been
corrected. Any trouble that causes improper operation of the
telephone network may require the telephone company to
discontinue service to the trouble site after they notify the
user of the reason.
REPAIR AUTHORIZATION
FCC regulations do not permit repair of customer owned
equipment by anyone except the manufacturer, their
authorized agent, or others who might be 
authortzed by the
FCC. However, routine repairs can be made according to
the maintenance instructions in this publication, provided
that all FCC restriiions are obeyed.
RADIO FREQUENCY INTERFERENCE
The electronic key system contains incidental radio
frequency generating circuitry and, if 
pot installed and used
properly, may cause interference to radio and television
reception. This equipment has been tested and found to
comply with the limits for a Class A computing device
pursuant to Subpart J of Part 15 of FCC Rules. These limits
are designed to provide reasonable protection against such
interference when operated in a commercial environment.
Operation of this equipment in a residential 
area may cause
interference to radio and television reception; in which case
the user is encouraged to take whatever measures may be
required to correct the interference.
lf this equipment does
cause interference to radio or television reception, which can
be determined by turning the equipment off and on, the user
is encouraged lo 
try to correct the interference by one or
more of the following measures: Reorient the television or
radio’s receiving antenna, and/or relocate the KSU, the
individual telephone stations, and the radio or TV with
respect to each other. 
lf necessary, the user should consult
the manufacturer or an experienced radio/television
technician for additional suggestions. The user may find the
following booklet prepared by the Federal Communications’
Commission helpful: ‘How to 
identify and Resolve Radio-TV
Interference Problems.” This booklet is available from the
Government Printing Office, Washington DC. 20402. Stock
No. 
004-000-00345-4.
RINGER EQUIVALENCE NUMBER
The REN of each line is 0.48. The FCC requires the
installer to determine the total REN for each line, and record
it at the equipment.
1-2 
						

							CHAPTER 2INSTALLATION
MOUNTING CONSIDERATIONS
The KSU cabinet should be attached vertically to
any sturdy, flat, surface. It may be vertically rack
mounted if desired.
The KSU must be located within six (6) feet of a
proper electricaloutlet. The KSU power supply
requires a dedicated 
117VAC 15 AMP circuit, with a
third-wire ground, supplied to a standard (NEMA
5-l 5R) electrical outlet.
The distance between the KSU and the
TELCWPBX 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).
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 KSU mounting.
Suitable mounting backboards are available
commercially or can be constructed out of 
l/2-inch
plywood cut to size.
Tools and hardware required for mounting the KSU
cabinet include:
l Fasteners -wood screws (l/4 x l-inch round
head), toggle bolts, or wall anchors
l Screwdriver-to match fasteners
l Electric drill - if prepared holes are required
l Connecting tool - for fastening wires to a type-66
connector block.
1.
2.
?t .
4.
5.
6.
l Crimping tool - for 623-type modular plugsMOUNTING PROCEDURE
Unpack, and carefully inspect the KSU and
stations 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 KSU
mounting surface.
A full scale mounting template is supplied in the
KSU packing box. Hold or tape this template to the
mounting surface, and mark the location of the
mounting holes on the mounting surface as they
are located on the template. The KSU mounting
dimensions are also shown on 
Figure 2-1.
Drill holes tn 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.
Attach the KSU to the mounting surface 
with four
(4) screws installed through the KSU mounting
flange 
and into t’.: mounting surface holes. Notethat the 
flangl r .zare elongated with anenlargement 
i: nd of the hole. This feature
allows the m: screws to be partially installed
in the mount.fse before the KSU is hung on
them.
Place the indivzi. : I 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 de&Wall
reversable. Refer to Chapter 4, Maintenance, for
instnrctions in preparing a desk/wall reversable
station for wall mounting.
2-1 
						

							CABINET OUTLINE
24%iPPROX)MOUNTING
HOLE LOCATIONS
. .
+
I-L4 (APPROX)
(ALL DIMENSIONS IN INCHES)
Figure 2-1. KSU Mountlng DimensionsSYSTEM WIRI’::LINE CONNECTIONS
System cabling may be routed car (?d or visible as
the installation location requires. ( : j engineering
practices must be observed and a : ;- licable building
codes must be adhered to. Tables 
_ : through 2-5
and Figures 2-2 through 2-5 illustrate the system
wiring and connection points.AC POWER CONNECTION
Employ a dedicated 11 NAC 15 AMP circuit, with a
third-wire ground, supplied to a standard electrical
outlet (NEMA 
5-15R) 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.The KSU interface connection for the TELCO or PBX
lines is a 50-pin, male connector. A 25-pair cable,
properly terminated, must be mnnecfed from the KSU
connector to the demarcation point connector
’
(typically a 66M-xx connector).
CABLE CLIPS
The 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.
Transient voltage splkes, 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 
condltlon but it Is
usually designed to protect the central
office circuits. While it will
 also provide
2-2 
						

							some protectlon to the commonequipment, It should not be 
relied upon for
total protection. To help ensure that
external 
overvottage surges do not
damage the system, lt Is recommended
that gas 
discharge tubes, or slmllar
primary protectlon devices, be Installed,
and properly grounded, In all connected
TELCO Ilnes.STATION CONNECTIONS
Connections between the KSU and the stations are
typically via type 
66M-xx connector blocks which are
cable connected to the KSU 
50-pin male connector.
The maximum distance allowed from the KSU to the
station is 1500 feet using 
#I24 gauge, twisted-pair
cable.
If spare conductors exist in the 
caoles that are run
between the KSU 
66M-xx connector block and the
station jacks, It is a good practice to connect them to
earth ground. Doing this may help prevent them from
inducing radio frequency and/or AC interference into
the system.
The polarlty between the Individual wlres
In a 
particular voice or data palr Is not
Crltlcal; however, do not connect the voice
ClrCults to the data clrcults.
NOTE: Station ports are programmed for the type of
equipment that is to be connected to them.
Either an LCD Speakerphone must be
connected to station 
porl70 or a 22
Line/Feature 
Keysef must be connected to
station port 7 7 for Class Of Service
programming pedonnance.
REUSING 
THE 8 LINE BLF KEYSET
When the reused 8 Line BLF Keyset is installed at
station port 
11,12, or 13, the associated adjunct port
(11,12, or 13) must be programmed for BLF 8 Line
Keyset operation; however, it cannot be connected to
m equipment.
When 
the reused 8 Line BLF Keyset is installed at
any other station port, the following considerations
must be made:
The data-paired port cannot be connected to any
equipment.
The overload paired port cannot be used for an 8
Line BLF 
Keyset but can be used for regular
multiline or single-line station installation.
l The station port must be programmed for 8 Line
BLF Keyset operation. Refer to Chapter 3 for
details.
STATION PAIRING
Station ports are paired for both data and overload
protection as shown below:
DATA PAIRINGOVERLOAD PAIRING
lo-ADJlO24 - 2510-11
27-29
11 -ADJ 11
26 - 2712-13
30-32
12 -ADJ 1228 - 2914-16
31-33
13-ADJ 1330-3115 - 1734-36
14 - 1532-3318-2035 - 3716-
 1734 - 3519-21
38-40
18 - 1936-3722-24
39-41
20 - 2138-3923-25 .
22 - 2340-41
26-28
DSS/BLF CONSOLE CONNECTIONS
The system provides four designated adjunct
(console) ports. The adjunct ports are associated with
companion station ports as follows:
ADJUNCT PORTSTATION PORT
10
10
1111
12
12
13
13
A DSS/BLF console may also be installed at any
station port that is data paired with a port containing a
companion telephone station. The station port that is
used by the console must be configured for console
operation by COS programming.
When installing a 
DSSIBLF console at a station port,
connect all four wires (voice pair and data pair) of the,
console cable to the station connector block. The
voice pair connections of the station port to which the
console is connected can also be connected as a PA
pcirt.
Refer to the paragraph in this chapter headed Area
Paging Interface 
- Station PA Port and to the
Illustration shown in Flgure 2-3. Wire the Input of the
PA system to the DSSBLF console voice-pair at the
station connector block. The station port must then be
programmed 
asa PA port.
Off-Hook Voice AnnounceWlth Handsfree Answerback
The DB32S-xx Adjunct Feature Module can be used
to provide off-hook voice announcing (OHVA) to a
station that is already busy on a call, and allow
subsequent handsfree answerback (HFAB) by the
station user. Two data-paired station ports are
required to provide this feature.
2-3 
						

							11 latallarlonIMI 66-074
l Connect a keyset to the first data-paired port.
l Connect the DB32S Adjunct Feature Module to the
voice pair and data pair of the second data-paired
port.
lFor the feature to be enabled, the port to which the
Adjund Feature Module is connected must be
programmed as a DSS console with call announce.
SECURE OFF-HOOK VOICE ANNOUNCE
TELEPHONE CONNECTIONS
This telephone system supports the Secure Off-Hook
Voice Announce (SOHVA) feature provided by certain
keyset models. Two data-paired station ports are
required to provide the SOHVA feature.
NOTE: If
 non-secure off-hook voice announce
capability is required, it can be provided by the
model 
DB32S-xu console as described above.
The SOHVA equipped telephones contain a
6-position, 3-pair line jack. Using 6-wire, twisted-pair
cable, connect the two inside pairs of the line jack to
the first data-paired port and connect the outside pair
to the second data-paired port.Refer to Flgure 2-5 for
an illustration of this wiring.
l Connect pins 3 and 4 to the voice pair and pins 2
and 5 to data pair of the first data-paired port.
l Connect pins 1 and 6 to the voice pair of the second
data-paired port.
To enable the SOHVA feature, the following
programming considerations must be taken:
l
lThe first paired-port must be programmed as a
muttiline port.
The second paired-port must be programmed as a
DSS console with call announce port.
POWER FAILURE STATION CONNECTIONS
The system provides three tip and ring pairs
connected to lines 1,2,
 and 3 as emergency, power
failure circuits. These power failure pairs are located
as detailed on Table 24 and Figure 24. A power
failure pair is only active during a power failure. An
industry standard, single-line telephone, such as a
type 2500, can be connected to a power failure pair
and used to provide communications capability should
the AC power to the system be interrupted.A-LEAD CONTROL
DEVICE CONNECTIONS
The KSU can detect an A-lead (A and Al) control
signal when it is applied to lines 7 and 8. An A-lead
control device can be bridge-connected to these lines
via terminal clips on the 
J-4 station connector block.
Refer to Table 24 and Figure 24 for connection
details.DATA DEVICE CONNECTlONS
When a serial data printer is used for SMDR and COS
printout, or a video display terminal 
(VDT) is used to
perform class of 
senrice programming connect the
data device to terminal clips on the J-4 station
connector block.
The distance between the device and the KSU can be
up to 500 feet in a quiet electrical enviroment.
Shielded cable may be required at some sites for 
long
runs. For longer distances, a limited distance modem
must be used to relay the data communications
between the wmmon equipment and the data device.
Refer to Table 2-4 for connection details.
When preparing a cable for connection to a data
device, refer to the manufacturer’s manual for the
equipment being interfaced, and make thefollowing
wiring connections:
l Wire the KSU RD line (data from device to KSU) to
the device TD (transmit data) output pin.
.
l Wire the KSU TD (data to device from KSU) pin to
the device RD (receive data) pin.
l Wire the KSU SG (signal ground) pin to the device
SG (signal ground) pin.I
l Wire the KSU CTS (clear-to-send status from
device to KSU) pin to the device RTS
(request-to-send) output pin.
NOTE: 
The KSlJ requires a positive voltage, with
respect to signal ground, in 
order to send data.If
 required, wire the KSU RTS (request-to-send
status signal 
from the KSU to the device) pin to
the device DSR (data-set-ready) input pin.
If required, wire the KSU PG (protective ground)
line(s) to the protective ground pin(s) of the device.
The system defaults to 
7-b& data with no parity at a
baud rate of 1200. Configure the device, per the
manufacturefs instructions, to&match the data format
and baud rate that is set by COS programming.
2-4 
						

							SYSTEM GROUNDINGThe wmmon 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
wld 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 wmmon equipment
cabinet for this purpose.COMMON AUDIBLE AND
AUXILIARY STATION INTERFACE
Two sets of relay closure dry-contact points are
available at the J-l 
and J-2 station connector
bbcks.One set (J-l connections) provides a
dry-contact closure whenever any of the 
TELCOIPBX
lines, connected to the KSU, ring. The other set (J-2
connections) provides a dry-contact closure whenever
system station port 17 rings. These contact closures
track the ringing pattern in both cases. The contacts
are closed during the ringing period and are open
during the silent period.
A typical connection is illustrated in 
Flgure 2-2. Refer
to the paragraph 
headedArea Paging Interfacefor a
discussion for using these terminals in this alternate
paging function.
Do not exceed a 1 amp at 24 volts (S amp
at 46 volts) load on these control terminals.
If the load requirements exceed thls Ilmlt,
connect the load through an external slave
relay. DO NOT CONNECT THESE
CONTROL TERMINALS DIRECTLY TO THE
117VAC LINE.AREA PAGING INTERFACE -
STATION PA PORT
Any unused station port can be programmed to be a
PA port instead of a telephone station port (see
Chapter 3 for programming details).
The audio input of an external paging amplifier can be
connected to the audio pair of the station port as
illustrated in 
Figure 2-3.
The audio input connection must be isolated with a
600 ohm to 600 ohm audio matching transformer.
Terminate the audio input of the PA system with a 620
ohm (nominal value) resistor.
If station port 39 is programmed as a PA port, the
Common Audible contact points are automatically
reconfigured as PA enable terminals. The contact
closure now occurs when PA station 39 is dialed. The
normal 
wmmOn audible function, as discussed
-
previously, is disabledas long as station 39 is a PA
station.
If station port 41 is programmed as a PA port, the
Auxiliary Station Interface (station port 17 audible)
contact points are automatically reconfigured as PA
enable terminals. The contact closure now occurs
when PA station port 41 is dialed. The normal
auxiliary station interface function, as discussed
previously, is disabled as long as station port 41 is a
PA station.AREA PAGING INTERFACE 
- LINE PORT
A line port can be configured by class of service
programming to be an AUXILIARY port. As an
AUXILIARY port, 
it can be used to couple a station
voice path to an external device. This is done from
any 
aflowed station by pressinq the proper line key to
select themARY port. DfiF tones or dial
pulses can be dialed through the ‘auxiliary port as
needed.
If direct access area paging is to be part of the
system, connect the audio input of a paging amplifier
to the line that is programmed to be an AUXILIARY
port. The input impedance of this port is
approximately 600 ohms. A tone select, zone-paging
amplifier can be employed if desired. If used, the
zone-select 
code must be dialed after the AUXILIARY
port line select key is pressed.KEY SYSTEM/MULTIFUNCTION
(HYBRID) CONFIGURATION
The system can be configured to operate as either a
key system or as a 
multifunction (hybrid) system.
Configuration is by way of a wire strap placed between
clip terminals 27 and 28 of station connector block J-4.
The KSU is shipped from the factory as a key system’
(KF). To convert operation over to the multifunction
(MF) system, add the strap.
The KF and MF designations are equipment type
catagories as stipulated in FCC rules and regulations,
Part 68, 
and appear as part of the FCC Registration
Number on the equipment label. The appropriate
registration number must be reported to 
the telephone
company at the time of connection along 
with other
FCC mandated information. (Refer to Installer/user
Information Regarding FCC Rules And Regulations
found in Chapter 1 of this manual.)
Operationally, the multifunction (hybrid) configuration
enablescertain PBX features which may incur 
a higher
monthly tariff to thetelephone company. These
features allow dial access to (automaticselection of)
outgoing lines. The specific Executech feature that is
enabled is:
- Line Group (Including Dial Access)
2-5