Inter-Tel Encore Installation, Programming And Maintenance Version 4 Manual

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Key Service Unit (KSU)
INSTALLATION
2
5. KEY SERVICE UNIT (KSU)
A. KSU DESCRIPTION
5.1The KSU is a compact, wall-mounted unit that houses the system power supply, the
CPU, and the expansion cards. The KSU performs all control and switching activities for the
system, including: detecting incoming CO calls, storing speed-dial numbers, processing data-
controlled features, and controlling the interaction between keysets, single-line sets, CO lines,
and voice channels.
5.2The KSU dimensions and weight are:
5.3The CPU has 2MB of random-access memory (RAM) and 4MB of read-only memory
(ROM). The software code for the system is stored in the non-volatile ROM memory, and the
programmed database and speed-dial numbers are stored in the RAM memory.
5.4The RAM memory is protected by a capacitor. The capacitor will protect the pro-
grammed database until the accumulated system downtime exceeds 2-3 months (depending on
the size of the database). 
5.5The connectors on the CPU are shown below. Components that are not labeled are not
currently used.
Height 18 in. (450 mm)
Width 12 in. (304.5 mm)
Depth  3 in. (71.6 mm)
Weight 5.5 lb. (2.5 kg)
GROUNDING CONNECTOR
DOORSTRIKE RELAY LINES 1 & 2
LINES 3 & 4
V24 INTERFACE
CENTRAL BELL
EXT 25
EXT 24
EXT 23
 (DOORPHONE)
EXT 22
(LONG LINE)
EXT 21
EXT 20STATIC DISCHARGE
STRAP CONNECTORMUSIC-ON-HOLD
CONNECTOR
CONNECTOR
VOICE MESSAGING 
MODULE CONNECTOREXTENSION CARD
CONNECTORS LANGUAGE CARD
CONNECTOR LINE CARD
CONNECTORS 
						

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Unpack and Inspect The KSU
B. UNPACK AND INSPECT THE KSU
5.6Before beginning the installation:
1.Unpack the KSU and lay it on a flat surface with the cover facing up. 
2.Remove the MDF cover by removing the retaining screw at the bottom and sliding the
MDF cover upward. Open the KSU by loosening the two retaining screws on the left
side of the cover and lifting the cover off the hooks located on the right side. (The
screws on the KSU will not come completely out of the plastic.)
3.Inspect the KSU. If the KSU or any of its internal components are damaged, contact
your supplier immediately.
4.Ensure that the correct Language Card is installed in the KSU. This card determines the
language that will be used by the Courtesy Service prompts (it does not affect Voice
Messaging). There are separate cards for English, Spanish, and French. See the Parts
chapter for part numbers. If the wrong Language Card is installed, replace it with the
correct card.
5.If you are installing one or more Expansion cards, proceed to the next section. Other-
wise, replace the KSU cover; then proceed to page 2-18.
Retaining screw
for MDF cover
Remove the 
MDF cover by
sliding upwards
Inter-Tel EncoreInter-Tel Encore
Two retaining screws
Lift off cover toward right
SYSTEM MUST BE
DISCONNECTED
FROM MAINS
SUPPLY BEFORE
REMO VING  LID
Language Card
Location 
						

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Install the Expansion Cards in the KSU
INSTALLATION
2
C. INSTALL THE EXPANSION CARDS IN THE KSU
5.7The KSU has circuitry for six extensions. Expansion cards add circuitry for additional
extensions and CO lines. Up to two Extension Cards and four Line Cards can be installed as
shown below. 
5.8An optional Voice Messaging Module can also be installed. This card provides up to 80
minutes of voice storage for extension voice message boxes and the Answering Machine fea-
ture. It is also used for the Automated Attendant and Custom Courtesy Service features.
Voice Messaging Module
5.9When the Voice Messaging Module is installed, a system Answering Machine can be
enabled and each extension can be provided with a voice box. A minimum of two minutes stor-
age is allocated automatically to each programmed extension. The remaining capacity is
dynamically allocated. 
5.10The Voice Messaging Module is also required to provide a personalized greeting in
either the Courtesy or Auto Attendant services.
5.11The Voice Messaging Module is located on the CPU as shown below. To install, insert
the module into the connector on the CPU.
CAUTION
Electrostatic Discharge Hazard. The cards contain static-sensitive components. Lift them
only by the edges and carefully handle the components. Always use electrostatic protection
when inserting and removing circuit boards. Never insert or remove circuit boards when
power is applied to the system.
Voice Messaging
Module Location 
						

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Install the Expansion Cards in the KSU Line Card
5.12The Line card adds two CO lines to the system. Because the CPU does not have CO
line connectors, at least one Line Card must be installed for CO line access. Line Cards can be
installed on the CPU or on Extension Cards, as shown below.
NOTE: If only one line on a two-port Line Card will be used, the second line must be disabled
using system programming.
5.13To install, insert the Line Card into one of the connectors on the CPU or a connector on
a Extension Card.
Locate Line Card
Here
Locate Line Card
Here
Locate Line Card
Here
Locate Line Card
Here
TOP
Insert this 
     way 
						

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Install the Expansion Cards in the KSU
INSTALLATION
2
Extension Card
5.14Each Extension Card has circuitry for an additional six extensions. Up to two Extension
Cards can be installed.
5.15The Extension Card has a grounding connector, Line Card and line connectors, and six
extension connectors. The figure below shows the Extension Card connectors. The six exten-
sions are numbered 26 through 31 for the card in the lower connector on the CPU and 32
through 37 for the card in the upper connector.
Position 2
Position 1
Line Card Connectors Grounding Connector
Line Connector
Six Extension 
Connectors 
						

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Grounding the KSU 5.16To install, insert the Extension Card into the connectors on the CPU. The card must be
inserted with the column support located under the line termination points as shown below.
NOTE: To protect the system against high voltage surges on incoming CO lines (for example,
caused by lightning), the ground connector on the Extension Cards must be connected to the
grounding point on the CPU. Then the CPU must be attached to earth ground. It should also be
equipped with a surge/spike protector (see next page).
D. GROUNDING THE KSU
5.17To protect the system against high voltage surges on incoming CO lines (for example,
caused by lightning), the ground connector on the Extension Cards must be connected to the
grounding point on the CPU. Then the CPU must be attached to earth ground. It should also be
equipped with a surge/spike protector.
5.18To ground the cards and CPU, run wire to the grounding terminals as shown below.
Then connect the grounding terminal on the CPU to an earth ground.
PSTN Expansion
Card
PSTN Expansion
Card
To Earth Ground 
						

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Replace the KSU Cover
INSTALLATION
2
E. REPLACE THE KSU COVER
5.19If expansion cards have been installed in the KSU, you must remove the break-off pan-
els from the side of the KSU cover to allow access to the connectors. 
5.20Position the cover over the hooks on the right edge of the KSU and then lower the cover
onto the KSU. Tighten the retaining screws on the cover.
Encore
Break-Off Panels
Inter-Tel Encore
Two retaining screws 
						

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Wall-Mount the KSU
F. WALL-MOUNT THE KSU
5.21When a suitable location has been found, mark the screw locations on the mounting sur-
face, using the mounting bracket provided. Position the bracket on the wall and ensure that it is
level. Mark the screw holes, then drill four holes in the wall at the marked locations. If the
KSU is being mounted on masonry or plasterboard, use suitable fasteners. 
5.22The figure below shows the mounting bracket and the necessary top and side clear-
ances. 
5.23Hang the KSU on the bracket, as shown in the figure below.
4.8 in. (120mm)
clearance
   20 in.
(500mm)
60 in.
(1500mm)
   20 in.
(500mm)
clearance
Locate the mounting bracket in a
suitable position and place the KSU 
onto it by lowering it into position
 
Inter-Tel Encore 
						

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Connecting Cables to the KSU
INSTALLATION
2
G. CONNECTING CABLES TO THE KSU
Wiring Technique
5.24The extension and line cables connected to the CPU enter the KSU at the bottom of the
KSU, as shown below. Remove the break-out panel at the bottom of the KSU and pass the
cables that will be connected to the CPU through the cable entry hole. 
5.25Cables that will be attached to the Extension Cards are routed from the left side of the
KSU, directly to the cards. (The breakout panels on the side are removed to allow access to the
Extension Cards.)
5.26Pass cable-retaining straps through the hooks provided and pass the cables through the
cable-retaining straps until they are adjacent to the appropriate connectors. The cables should
be neatly guided into the channel space between the connectors and the KSU case side, ensur-
ing that there is sufficient clearance between the cables and the KSU case lid. The cables
should remain sheathed inside the KSU housing to within reach of the appropriate connector. 
5.27The tables on the following pages show the connection points between the CPU con-
nectors in the KSU and the 66M1-50-type connecting block, using the standard 25 pair cable
color code.
Connectors
5.28The KSU and Extension Cards are equipped with 4-wire IDC Krone connectors. The
same connector type is used to terminate the CO lines as is used to terminate the extensions. To
punch down the extension and line cables on the IDC Krone connectors, use the special punch-
down tool, provided with the KSU.
CAUTION
Safety Hazard. Remove only the knock-out panel(s) required for cable access to the KSU
MDF area. Removing the other panels exposes the KSU circuitry unnecessarily and could
create a safety hazard.
Install cables along the left
side of the KSU, (area in gray),
and connect to the appropriate
terminals
Cable access via a break-out panel on bottom left
of the KSU housing 
						

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Installation
ENCORE MANUAL, Issue 4.0 – July 2002
Main CPU Connections — Cable A
FIGURE 3.Main CPU Connections — Cable A
Table 2-2: Main CPU Connections - Cable A
CABLE PAIRCONNECTIONDEVICE
W-BL VOICE-A
Ext 20
BL-W VOICE-B
W-O DATA-C
O-W DATA-D
W-G VOICE-A
Ext 21
G-W VOICE-B
W-BR DATA-C
BR-W DATA-D
W-S VOICE-A
Ext 22
S-W VOICE-B
R-BL DATA-C
BL-R DATA-D
R-O VOICE-A
Ext 23
O-R VOICE-B
R-G DATA-C
G-R DATA-D
R-BR VOICE-A
Ext 24
BR-R VOICE-B
R-S DATA-C
S-R DATA-D
BK-BL VOICE-A
Ext 25
BL-BK VOICE-B
BL-O DATA-C
O-BK DATA-D
BK-G
MOH Music Source
G-BK
BK-BR
CENTRAL BELLCentral
Bell
BR-BK
BK-S
DOOR STRIKEDoor
Strike
S-BK
Y- B L
Not Used None BL-Y
Y- O
O-Y
Y-G TIP Line
#1
G-Y RING
Y- B R T I P L i n e
#2
BR-Y RING
Y-S TIP Line
#3
S-Y RING
V-B L TI P L in e
#4
BL - V RING
V-O TIP Line
#5
O - V RING
V-G TIP Line
#6
G - V RING
V-B R TI P L in e
#7
BR - V RING
V-S TIP Line
#8
S - V RING