Inter-Tel 824 Installation And Field Maintenance Manual

							INTER-TEL PRACTICES 
SYSTEM SPECIFICATIONS 
824 INSTALLATION b MAINTENANCE 
Issue 1, June 1984 
FIGURE 2-6. KEY SERVICE UNIT (KSU) 
. . 
. 
A I 
LINE SEPARATION SWITCHES 
A 5 
DOOR-MATE VOLUME CONTROL 
n 2 RS232C INTERFACE 
n 6 
BATTERY BACK-UP SELECT 
SWITCH 
A 3 M OH PHONE JACK 
L+ A 7 
AC LINE FUSE 
EXTERNAL PAGE VOLUME 
A 6 
AC POWER SWITCH 
CONTROL 
Page 2-17  
						

							INTER-TEL PRACTICES INSTALLATION 
824 INSTALLATION & MAINTENANCE Issue 1, June 1984 
I 
INSTALLATION 
CONTENTS PAGE 
1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 
10. 
1. INTRODUCTION  INTRODUCTION ............................................ 3-l 
SITE PLANNING ........................................... 
3-l 
CABLING ................................................. 
3-3 
ASSEMBLING THE MAIN DISTRIBUTION FRAME (MDF) BACKBOARD . . 3-5 
KEY SERVICE UNIT (KSU) INSTALLATION ..................... 
3-15 
KEYSET INSTALLATION ..................................... 
3-36 
DOOR-MATE INSTALLATION .................................. 3-44 
BATTERY BACK-UP INSTALLATION ............................ 3-47 
INSTALL THE SElDR OUTPUT DEVICE .......................... 
3-48 
INSTALL EXTERNAL MUSIC-ON-HOLD .......................... 3-49 
1.01 This section describes the recommended 
procedures for in- 
stalling the 824 system hardware. It includes suggestions for 
planning the installation, preparing the site, and providing the 
necessary cable, connectors, jacks, etc. Refer to SYSTEM SPECI- 
FICATIONS for hardware descriptions. 
2. SITE PMING 
2.01 Suggestions for planning the 824 installation are listed on 
the next page. They include Key Service Unit (KSU) site planning 
and tools and supplies required. 
. 
Page 3-l  
						

							INTER-TEL PRACTICES 
INSTALLATION 
824 INSTALLATION & MAINTENANCE 
Issue 1, 
June 1984 
A. KEY SERVICE UNIT (KSU) SITE PLANNING 
2.02 Prior to installing the 824 equipment, select a centralized 
location for the KSU and Main Distribution Frame (MDF) which will 
minimize cable run lengths from each station and provide the 
proper environmental conditions. 
A. Availability to 105-125VAC, 
60Hz single-phase commercial 
power. 
NOTE : This must be a dedicated, 
separately fused AC in- 
put for proper operation. 
It is highly recommended that 
the ground wire also be dedicated to this outlet. 
All 
three wires (power, neutral, 
and ground) should be run 
directly from the breaker box to the KSU outlet. 
B. Select the KSU location to minimize cable run length. 
All keysets connected to the system must not exceed the 
loop limit of 40 ohms or 800 feet (using 24 gauge wire). 
Door-Mate units should not exceed the loop limit of 20 
ohms or 400 feet. 
C. The selected location 
should not be exposed to direct 
sunlight, high humidity, 
heat radiation, dust, or strong 
magnetic fields (such as heavy motors and large copy 
machines). p 
D. The maximum 
room temperature is 80°. 
The temgerature 
range inside the KSU must be within 32O to 104 F. To 
maintain this limit, 
the equipment should be located in a 
climate controlled room. 
E. 
Ample air space should be provided for the KSU since the 
power supply is convection cooled. 
F. 
When wall-mounting any equipment, select a wall which is 
strong enough to support twice as much weight as the 
equipment to be mounted. 
The KSU weighs apprqximately 30 
pounds; the keyset weighs approximately five pounds. 
G. .The physical 
space required for. the Main Distribution 
Frame (MDF) will not exceed a 3 X 4-foot area. 
This area 
is sufficient to wall mount the KSU, 
all connection 
blocks, and external equipment (such as paging amplifiers 
and equipment used with remote contacts). 
H. Allow room for the SMDR output device and system back-up 
batteries. 
Page 3-2 
: 
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							INTER-TEL PRACTICES 
INSTALLATION 
824 IBSTALLATION & MAINTENANCE 
Issue 1, June 1984 
B. TOOLS AND SUPPLIES REQUIRED 
H. Supply standard telephone hand tools. 
3. 
CABLING A digital voltmeter is required to check the power sup- 
PlY, and ensure correct wiring of the modular jack assem- 
blies. 
Accuracy of the meter must be +0.258 or better. 
- 
An AMP MI-1 Butterfly connector machine or equivalent is 
used to assemble the SO-pin amphenol connectors 
for the 
MDF PCB. 
Supply 25-pair cable and SO-pin female amphenol connec- 
tors to make interface cables connecting the MDF blocks 
to the four connections on the MDF PCB. 
Supply one-pair cable to run from the MDF to the Door- 
Mates, if included. 
Supply two-pair (four-conductor) cable to run from the 
MDF to the individual stations. 
Supply up to 24 four-conductor modular jack assemblies to 
connect the keysets to the cable. 
Supply standard 66M150 type blocks and bridging clips. 
3.01 Standard floor plans should be developed to aid in proper 
station wiring in a star configuration from the KSU. 
cable identification plan using station circuit numbers. Prepare a 
3.02 Circuit numbers are assigned as follows. 
The system can 
hold up to three KTI PCBs; 
each supports four or eight keysets. 
The first digit of the circuit number identifies one of the PCB 
slots. 
The second digit identifies one of the circuits on the ., 
. PCB. For example, 
circuit number 3.7 identifies the seventh 
circuit on the third KTI PCB. 
Page 3-3  
						

							INTER-TEL PRACTICES INSTALLATION 
824 INSTALLATION & MAINTENANCE Issue 1, 
June 1984 
* 
A. RUNNING CABLE 
3.03 Run two-pair cable to each station location shown on the 
floor plan. Both ends of every cable must be labeled with the 
circuit number. Run one-pair cable to each Door-Mate location. 
Follow 
A. 
B. 
C. 
D. 
E. 
F. these guidelines: 
Avoid cable runs parallel to fluorescent light fixtures 
or AC lines not in conduit. 
If they are unavoidable, run 
the cable perpendicular to the obstacles. 
Do not run cables inside electrical conduit already occu- 
pied by AC power cable. 
Do not run cables near equipment with electric motors or 
past strong magnetic fields, 
or arc welding equipment. such as large copy machines 
Do not place cables where they will be stepped on or 
rolled over by office furniture. 
Hot pre-wires are NOT permitted. 
They act like an an- 
tenna and may transmit data errors to the KSU, causing 
the corresponding KTI PCB to reset repeatedly. 
Refer to Section 4E, 
LOOP RESISTANCE TESTS, page 3-13. 
B. MODULAR JACKS 
3.04 Terminate the station end of the cable on the four-conduc- 
tor modular jack assemblies, 
as shown below in Figure 3-l. 
FIGURE 3-l. 
KEYSET MODULAR JACK ASSEMBLY WIRING 
BL/WH 
WH/OR 
OR/WH 
WH/BL RING 
27 VDC 
Q p 
TIP 
GND 
Page 3-4  
						

							INTER-TEL PRACTICES INSTALLATION 
824 INSTALLATION h MAINTENANCE Issue 1, June 1984 
4. ASSEMBLING THE MAIN DISTRIBUTION FRAME (MDF) BACKBOARD 
4-01 The MDF is the point at which the KSU, the stations, and 
the C.O. lines are connected to one another. It is. extremely 
important that this be done accurately. 
4.02 The MDF backboard should be constructed to present a neat 
appearance, readily facilitate changes, 
have cables of proper 
length, and be correctly labeled. A 3X4-foot 3/4-inch plywood 
backboard should be adequate to mount the connector blocks, KSU, 
and external equipment. All connector blocks should be clearly 
labeled. Refer to Figure 3-2 below. This section includes: 
A. Connecting C.O. Lines to the MDF 
B. Connecting Station Cables to the MDF 
C. Connecting Door-Mates and Externai Equipment to the MDF 
D. Loop Resistance Tests 
FIGURE 3-2. MAIN DISTRIBUTION FRAME LAYOUT 
:0 
- 
x 
; 
U 
- NE: 
- 
0’ 
I 
k 
0 
- 
TO CENTRAL OFFICE LINES 
I 
- 
? 
N 
: 
L 
S 
- 
TO STATIONS 
CABLES TO KSU 
NOTE : ALL BLOCK3 ARE 66M 150 TYPE 
Page 3-5 
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							INTER-TEL PRACTICES INSTALLATION 
824 INSTALLATION & MAINTENANCE Issue 1. 
June 1984 
A. CONNECTING C-0. LINES TO THE MDF 
.: 
4.03 Central Office (C.O.) lines are typically terminated on an 
RJ-21X or RJ-14C connector. 
Then you terminate the lines on the 
MDF. Refer to Figure 3-3 on the next page. 
(1) One connection block on the MDF is dedicated for all C.O. 
line connections. Terminate 
a 25-pair cable from the 
right side of this block to the RJ-21X or RJ-14C. 
Label 
both ends. 
(2) Make an MDF PCB termination cable using 25-pair cable. 
Use enough cable to reach from the KSU to the MDF: 
a. 
Attach a 50-pin female amphenol connector to the KSU 
end of the cable. 
b. 
On the MDF end of the cable, 
terminate the wires on 
the left side of the C.O. Lines block. 
C. Use bridging clips to complete the connections. 
d. Leave the PCB end of the cable hanginguntil the KSU 
is installed. 
4.04 Lightning Protection: 
To ensure 
tection, adequate lightning pro- 
install gas discharge tubes to ground on each C.O. line. 
This must be done external to the system on the Central Office 
side of the line. 
This protection should give energy absorption 
and filter low-level surge potentials on the C.O. lines. 
./ 
. 
Page 3-6  
						

							INTER-TEL PRACTICES 
INSTALLATION 
824 INSTALLATION & MAINTENANCE Issue 1, June 1984 
FIGURE 3-3. C-0. LIME TERMINATIONS ON TEIE MDF 
WH/BL 
BL/WH 
WH/OR 
OR/WH 
WH/GN 
GN/WH 
WH/BR 
BR/WH 
WH/SL 
SL/WH 
R/BL 
BL/R 
R/OR 
OR/R 
R/GN 
GN/R 
R/BR 
B R/R 
R/SL 
SL /R TI 
---- 
RI 
---- 
T2 
---- 
R2 
---- 
T3 
a--- 
R3 
---- 
T4 
---- 
R4 
---- 
T5 
---- 
R5 
---- 
T6 
---- 
R6 
---- T7 
---- 
R7 
---- 
TB 
---- RB 
---- 
a--- 
---- 
---a 
GN/V 
V/BR 
BR/V 
V/SL 
6 
TO CO. CONNECTOR 
ON MDF PCB d 
TO TELCO 
RJ-21X 
Page 3-7  
						

							INTER-TEL PRACTICES 
INSTALLATION 
824 INSTALLATION h MAINTENANCE 
Issue 1, June 1984 
B. CONNEXTING STATION CABLES TO THE MDF 
4.05 After station cables are run, 
they are connected to the MDF 
as described below. Refer to Figure 3-4 and Figure 3-5 on the 
following pages. 
(1) 
(2) 
(3) Ensure both ends of the cable are labeled with the cir- 
cuit number. 
Terminate each station cable on the right side of the 
designated KTI block. 
NOTE : Each KTI block supports up to 12 stations. 
Make an MDF PCB termination cable using 25-pair cable. 
Use enough cable to reach from the KSU to the MDF: 
a. 
b. 
C. 
Attach a 50-pin female amphenol connector to the KSU 
end of the cable. 
On the MDF end of the cable, terminate the wires on 
the left side of the KTI block. 
DO NOT use bridging clips at this point. 
Leave the 
PCB end of the cable hanging until the KSU is in- 
stalled. 
. 
Page 3-8  
						

							INTER-TEL PRACTICES INSTALLATION 
824 INSTALLATION & MAINTENANCE Issue 1, June 1984 
FIGURE 3-4. STATION CABLE TERMINATIONS 
PART OF MOF 
KTI 
BOARD 
- 
-iIs 1-I =I.1 
- - 
-- 
-- 
-- 
- --- 
---- 
---- 
1 
OR/WH ON0 
7 
OR/WI-l ON0 
TO 
KEYSET 
Page 3-9