Inter-Tel Glx Plus Issue 2 Installation And Field Maintenance Manual

							INTER-TEL PRACTICES 
GLX-PLUS INSTALLATION & MAINTENANCE INSTALLATION 
Issue 2, June 1993 
FIGURE 3-l. 
SAMPLE SYSTEM LAYOUT 
PAGING AMPLIFIER 
AND SPEAKERS 
D MUSIC 
SOURCE  MAIN DISTR~GUTION 
FRAME (MDF) 
-- 
SURGE/SPIKE 
PROTECTOR 
1 
---cxG AC-UNINTERRUPTED 
POWER SOURCE cl g ISOLATED 
DEDICATED 
AC OUTLET 
UP TO 12 
KEYSETS 
Page 3-3  
						

							INSTALIATION Issue 2, June 1993 INTER-TEL PRACTICES 
GLX-PLUS INSTALLATION & MAINTENANCE 
3. PRE-INSTALLATION CHECKLIST 
3.1 To make installation easier, use the checklist on 
the following pages when preparing to install the sys- 
tem. (Hardware specifications are included in the 
SPECIFICATIONS section.) 
A. ESTABLISH SUITABLE 
ENVIRONMENTAL CONDITIONS FOR 
THE SYSTEM 
- 
Locate the KSU within 9 feet (3 meters) of an iso- 
lated, dedicated, 10%125VAC, 57-63Hz, 15A, 
single-phase commercial power source. 
NOTE: This must be an isolated, dedicated AC cir- 
cuit for proper operation. All three wires (power, 
neutral, and ground) must be run separately from the 
outlet to the breaker panel without being bonded to 
any other wire or circuit. DO 
NOT plug any other 
equipment into this outlet. To maintain the protec- 
tion provided by the isolated, dedicated circuit, the 
length of the AC power cord limits the distance be- 
tween the power supply and the outlet; DO NOTuse 
an extension cord. Also, to protect the system from 
AC voltage surges, a surge/spike protector is recom- 
mended (refer to page 2-5 for specifications). 
- 
Allow room near the KSU for the paging amplifier, 
battery back-up equipment, and the external music 
source, if used. To avoid interference, the music 
source should be placed 5 to 10 feet (1.5 to 3 meters) 
away from the KSU. 
- 
Make sure there are AC outlets for a music source 
and a paging amplifier, if they are to be installed. 
These outlets 
MUST NOT be on the same circuit as 
the outlet for the KSU. 
- 
Select the KSU location to minimize cable run 
length. Station instruments connected to the system 
must not exceed the limits (using 24AWG wire) 
listed in the table on page 3-11. The ohm values are 
loop measurements; feet (meter) values are the max- 
imum one-way measurements from the KSU. 
- 
Do not expose the KSU location to direct sunlight, 
high humidity, heat, dust, or strong magnetic fields 
(such as those generated by heavy motors and large 
copy machines). 
- 
The main distribution frame (MDF) requires a 3 
X 
4foot (0.9 x l.Zmeter), g-inch plywood back- 
board. This should provide sufficient room for the 
KSU and power supply, plus all blocks, modular jack 
assemblies, and Peripheral equipment. 
- 
Ample air space should be provided for the KSU 
since the power supply is convection cooled. 
DO NOT 
block the cooling vents located on the top and 
bottom of the KSU. Never place anything on top of 
the KSU. 
- Locate the equipment in a climate-controlled room 
with the proper environmental conditions. (See page 
2-3 for specific requirements.) 
- 
If keysets are wall mounted, the wall should be able 
to support twice the weight of the keyset. 
From UL 1459, a product safety specification governing 
telephone equipment: 
- 
Never install telephone wiring during a lightning 
storm. 
- 
Never install telephone jacks in wet locations unless 
the jack is specifically designed for wet locations. 
- Never touch uninsulated telephone wires or termi- 
nals unless the telephone line has been disconnected 
at the network interface. 
- 
Use caution when installing 
or modifying telephone 
lines. 
B. ASSEMBLE THE NECESSARY TOOLS 
AND SUPPLIES 
- Industry-standard, two-pair (four-conductor), 
twisted-pair cable to run from the MDF to keysets, 
single-line DTMF sets, etc. (For exceptions, see the 
NOTE under “Running Cable” on page 3-6.) 
- 
Four-conductor modular jack assemblies for key- 
sets, single-line DTMF sets, etc. (For exceptions, 
see the NOTE under “Running Cable” on page 
3-6.) 
- 
A high-impedance digital multimeter to check the 
Power supply and ensure correct wiring of the modu- 
lar jack assemblies. Multimeter accuracy must be 
&OS% or better. 
- 
Standard terminal block (66Ml-50-type) and bridg- 
ing clips for terminating the station cables at the 
MDF. 
- 
Industry-standard, 25-pair cable for connecting the 
MDF station block to the station connections on the 
KSU. 
- 
50-pin female amphenol-type connector and a con- 
necting machine. 
- 
A surge/spike protector to protect the system from 
AC voltage surges. 
- 
Grounding terminal and 1OAWGwire for grounding 
the KSU. 
Page 3-4  
						

							INTER-TEL PRACTICES 
GLX-PLUS INSTALLATION & MAINTENANCE INSTALLATION 
Issue 2, June 1993 
- 
Standard telephone hand tools and the mounting 
hardware for the MDF backboard, KSU, terminal 
block(s), modular jack assemblies, etc. 
3.2 Depending on the type of CO termination used by 
the telephone company and how close it is to the MDF, 
the following tools and supplies are also needed. 
For CO Lines terminated on RJ14 jacks near the 
MDF: 
- For every two CO lines installed, one two-pair mod- 
to-mod line cord to connect from the RJ14 jack to the 
corresponding KSU CO jack. 
For CO Lines terminated on RJ14 jacks away from 
the MDF (see Figure 3-5 on page 3-13): 
- Two four-conductor modular jack assemblies for 
every two CO lines installed. 
- Two two-pair mod-to-mod line cords for every two 
CO lines installed. 
- Industry-standard, two-pair cable (enough to extend 
from each RJ14 jack location to the MDF). 
- Gas discharge tubes with silicon avalanche suppres- 
sors for lightning protection on the CO lines. 
For CO Lines terminated on an RJ2lX block (see 
Figure 3-7 on page 3-14): 
- One 66Ml-50-type terminal connecting block and a 
supply of bridging clips. 
- Industry-standard, 25pair cable to extend from the 
RJ21X block to the MDF CO block. 
- A 50-pin male amphenol-type connector and con- 
necting machine. 
- One four-conductor modular jack assembly for 
every two CO lines installed. 
- One two-pair mod-to-mod line cord for every two 
CO lines installed. 
- 
Industry-standard, two-pair cable (enough to extend 
from the CO block to each modular jack assembly on 
the MDF). 
- 
Gas discharge tubes with silicon avalanche suppres- 
sors for lightning protection on the CO lines. C. 
- 
- 
- 
D. 
- 
- PLAN STATION LOCATIONS AND TYPES 
OF STATION INSTRUMENTS 
Prepare a floor plan for the station locations, using a 
star (home run) configuration. Include eachstation’s 
intercom number (10-21). Intercom number 10 is 
assigned to the system attendant. 
Keysets: The GLX-Plus System has the capacity for 
up to 12 keysets. Refer to page 2-9 in SPECIFICA- 
TIONS for a listing of the available keyset models 
and for more information on maximum station capa- 
cities. 
Single-Line Sets: Up to two industry-standard, 
single-line DTMF sets can be installed on the 
system. 
ASSEMBLE THE OPTIONAL EQUIPMENT 
Headsets and handset amplifiers for keyset and sing- 
le-line set stations. (Refer to pages 2-10 and 2-10 
for more information.) 
Data Port Modules (Executive and GLX-Plus Key- 
sets only) for hooking up either modem-equipped 
data terminals or loud ringing adapters and external 
signaling devices. (Refer to page 2-10 for more in- 
formation.) 
- System battery back-up using an uninterruptable 
power supply or standby power supply unit. (Refer 
to page 2-12 for specifications.) 
- External music source (the cable that connects to the 
KSU must be equipped with an RCA-type phono 
plug). 
- External paging speakers and amplifier (the cable 
that connects to the KSU must be equipped with a 
s-inch mini-phone plug). 
- Doorbox equipment. (Refer to page 2-12 for re- 
quirements.) 
- Facsimile (FAX) machine. (Refer to page 2-13 for 
more information.) 
- Voice mail equipment or answering machine. (Refer 
to page 2-12 for more information.) 
- Station Message Detail Recording (SMDR) Adapter 
and output device. (Refer to page 2-13 for more in- 
formation.) 
I 
3 
2, 
,’ 
‘, : 
Page 3-5  
						

							INSTALLATION Issue 2, June 1993 INTER-TEL PRACTICES 
GLX-PLUS INSTALLATION & MAINTENANCE 
4. STATION CABLING AND 
TERMINATIONS 
4.1 Floor plans should be developed to aid in proper 
station cabling in a star (home run) configuration from 
the KSU. The cables are run from the station locations to 
the station block at the MDF. Refer to page 2-2 for cab- 
ling requirements. 
4.2 Both ends of each cable should be labeled with the 
station’s intercom number: 10-21. Intercom numbers 
lo-19 are for keysets only. Intercom numbers 20-21 can 
be used for either keysets or single-line devices, depend- 
ing on whether an Expansion PCB or an Accessory Port 
Module is installed. 
A. RUNNING CABLE 
NOTE: 
It is recommended that two-pair cable and four- 
conductor modular jacks be used for all station connec- 
tions. This allows the various types of station 
instruments to be easily interchanged, if necessary. 
However, if desired, single-line DTMF sets can be in- 
stalled using one-pair cable and four-conductor modular 
jacks. 
4.3 From the MDF location, run industry standard, 
two-pair (four-conductor), twisted-pair cable to keysets 
and single-lines sets following these guidelines: 
l Install proper type cable for the application accord- 
ing to the National Electrical Code and local build- 
ing codes. Avoid cable runs parallel to fluorescent light fixtures 
or AC lines not in conduit. If these obstacles are un- 
avoidable, run the cables across them at right angles. 
Do not run station cables inside electrical conduit 
already occupied by AC power cable. (To do so is a 
violation of the National Electrical Code.) 
Do not run cables near equipment with electric mo- 
tors or through strong magnetic fields, such as those 
generated by large copy machines, arc welding 
equipment, heavy motors, etc. 
Do not run cables outdoors. The GLX-Plus System is 
designed for indoor wiring only. 
Do not place station cables where they can be 
stepped on or where they can be rolled over by office 
furniture. 
If using multi-pair (e.g., 25pair) cable runs to multi- 
ple station locations do not include CO lines, AC- 
ringing single-line sets, or AC-ringing auxiliary 
equipment in a cable being used for keysets. Keyset 
circuits should be included in separate multi-pair 
cable 
NIIS. 
NOTE: To avoid possible ringing crosstalk, do not 
run the station cabling for single-line devices in par- 
allel with the station cabling for keysets. 
I+ not exceed the loop limit measurements (using 
24AWG wire) for the station cable lengths as out- 
lined in the table on page 3-11. The ohm values are 
loop measurements; feet (meter) values are the max- 
imum one-way measurements from the KSU. 
. . 
Page 3-6  
						

							INTER-TEL PRACTICES 
GLX-PLUS INSTALLATION & MAINTENANCE INSTALLATION 
Issue 2, June 1993 
B. TERMINATING THE CABLES AT 
time; they will be wall mounted later when the station 
STATION LOCATIONS instruments are installed. Refer to Figure 3-2 below for 
a wiring diagram. 
4.4 Terminate the keyset and single-line set station 
cables on four-conductor modular jack assemblies at the 
station locations. (For exceptions to this, refer to the 
NOTE following section A on the previous page.) 
versed, the keyset will not function. 
4.5 Do not mount the assemblies on the wall at this 
FIGURE 3-2. STATION MODULAR JACK ASSEMBLY WIRING 
I TIP GND 1 
FOR KEYSETS AND 
SINGLE-LINE SETS 
NOTE: Single-line sets use only the tip and ring pair, not the power and ground pair. 
Page 3-7  
						

							INSTALLATION 
Issue 2, June 1993 INTER-TEL PRACTICES 
GLX-PLUS INSTALLATION & MAINTENANCE 
C. TERMXNATING STATION CABLES AT 
THE MAIN DISTRIRUTION FRAME (MDF) 
4.6 The main distribution frame (MDF) is the point at 
which the station instruments, CO lines, and auxiliary 
system equipment are connected to the KSU via termi- 
nal blocks and/or modular jack assemblies. It is ex- 
tremely important that the connections be made 
carefully and accurately. (Refer to Figure 3-l on page 
3-3 for a sample system layout. For diagrams of possi- 
ble MDF CO layouts, refer to Figures 3-5 and 3-7 on 
pages 3-13 and 3-14.) 
4.7 Assemble the MDF: 
(1) Mount a 3 x 4-foot (0.9 x LZmeter), g-inch 
plywood backboard at the MDF location. 
(2) Attach a 66Ml-SO-type terminal block to the 
plywood backboard. 
NOTE: To avoid possible ringing crosstalk, be 
sure to locate the station terminal block close to 
the KSU. The 25pair cable between the block 
and the KW should be less than three feet in 
length. 
4.8 After the station cables are run, connect them and 
the 25pair cable to the station block on the MDF as fol- 
lows: CAUTION 
Incorrect wiring of the station block or the station 
modular jack assembly (i.e., reversing the power 
pair with the tip and ring pair) can damage the 
transformer on the Main Control PCB. 
1 ‘: 
(1) 
(2) 
(3) 
(4) 
(5) Ensure that both ends of each station cable are 
labeled with the intercom number of the asso- 
ciated station instrument. 
Terminate each station cable on the right side of 
the station block. Refer to Figure 3-3 on the fol- 
lowing page for station cable terminations. 
Using enough 25pair cable to run from the sta- 
tion block to the left side of the KXJ, make the 
termination cable. Attach a 50-pin female 
amphenol-type connector to one end of the 
cable. 
Terminate the other end of the 25pair cable on 
the Zefi side of the station block. The connector 
will be attached to the KSU later. 
DO NOT attach bridging clips until the loop re- 
sistance tests have been performed (as described 
on page 3-11). 
‘. 
Page 3-8  
						

							INTER-TEL PRACTICES 
GLX-PLUS INSTALLATION & MAINTENANCE INSTALLATION Issue 2, June 1993 
FIGURE 3-3. STATION CABLE TERMINATIONS AT THE MDF 
TIP1 10 -IL - - Jr 10 RING - 
-- 
GNO - 
-- 
PWR - 
-- 
---- 
k/J ---- 
---- 
W/BL TIP MODULAR 
JACK 
ASSEMBLY 
WD GND 
I 
G Y 
TO KEYSET 
KSU 
AMPHENOL- 
TYPE 
CONNECTOR 
66Ml-50-TYPE BLOCK 
(PART OF MDF) 
WBLTIP 
I 
4- CONDUCTOR 
JACK ASSEMBLY 
66MI-50-TYPE 
CONNECTING 
BLOCK FEMALE 
AMPHENOL- TYPE 
/-CONNECTOR 
TO KEYSET 
OR SINGLE- 
LINE SET 
Page 3-9  
						

							INSTALLATION 
Issue 2, June 1993 INTER-TEL PRACTICES 
GLX-PLUS INSTALLATION & MAINTENANCE 
FIGURE 3-4. 
STATION CABLE TERMINATIONS ON THE STATION BLOCK 
INTERCOM NO. 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20* 
210 
* Station numbers l-10 (intercom numbers 10-19) 
are reserved for keysets only. Station numbers 1 l-12 (intercom 
numbers 20-21) can be used for either keysets or AC-ringing single-line devices, depending on whether an Ex- 
pansion PCB or an Accessory Port Module is installed. 
.:: 
Page 3-10  
						

							INTER-TEL PRACTICES INSTALLATION 
GLX-PLUS INSTALLATION & MAINTENANCE Issue 2, June 1993 
D. STATION LOOP RESISTANCE TEST 
(3) 
NOTE: lf performing the loop resistance test after the 
system is installed, unplug the keyset from the jack 
assembly. Then either unplug the 25-pair station cable 
from the KSU or remove the bridging clips for the 
desired keyset from the station block. 
4.9 Perform the loop resistance test for each station 
cable individually. 
(1) Ensure that bridging clips have not been 
installed on the station blocks and that the station 
instrument is not connected to the modular jack 
assembly. 
(2) Place a short across the RED and GREEN wires 
on the modular jack assembly. At the MDF, measure the resistance across the 
WHllB/BLUB and BLUB/WHlTB wires on the 
right (station) side of the station block. The read- 
ing should not exceed the limits (for 24AWG 
wire) listed in the table below (ohm values are 
the loop measurements; feet/meter values are the 
maximum one-way measurements from the 
=u)- 
NOTE: Excessive and/or improperly made con- 
nections increase the resistance of a cable, which 
reduces the allowable cable run length. 
(4) Remove the short after the test is complete. 
(5) Repeat this test for each station cable. 
(6) Install bridging clips on the station blocks to 
complete the cable connections. 
, 
Executive Keyset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Oohmsj?300ft.(243m.) 
Standard Keyset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Oohm@00ft.(243m.) 
GLXPlus Keyset (standard or display) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Oohms/1165ft.(355m.) 
GLX-Plus 
Keyset with Data Port Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lOohmd195ft.(59m.) 
Industry-Standard, Single-Line DTMP Sets (AC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75ohms/1460ft.(445m.) 
l Note that if shielded cable is used for any type of keyset installation, the actual loop limit may be reduced by as much as 20% because 
the foil wrapped around the wires in the cable acts as a capacitor. 
Page 3-11  
						

							INSTALLATION 
Issue 2, June 1993 INTER-TEL PRACTICES 
GLX-PLUS INSTALLATION & MAINTENANCE 
5. TERMINATING CO LINES AT THE 
MDF 
5.1 The installation procedure used to terminate CO 
lines at the MDF is dependent on the type of termination 
used by the telephone company and how close it is to the 
MDF. The CO lines may be terminated on RJ14(C or W) 
jacks or on an RJ21X block. 
5.2 Follow one of the three CO termination methods 
(A, B, or C) outlined on the following pages. 
IMPORlANT NOTES: 
l The first CO jack on the KSU connects lines 1 and 2, 
the second connects lines 3 and 4, and the third con- 
nects lines 5 and 6. Lines must be connected in that 
sequence. For example, if three lines are installed, 
lines 1 and 2 would terminate on the first jack, and 
line 3 would terminate on the second jack. 
l For additional lightning protection, install gas dis- 
charge tubes with silicon avalanche suppressors to 
ground (grounding rod or copper, cold water pipe) 
on each CO line. This must be done external to the 
system. Each gas discharge tube is installed directly 
between the telephone company termination and the 
system’s CO modular jack assemblies located next 
to the KSU. This protection should give energy 
absorption and filter low-level surge potentials on 
the CO lines. If CO termination method A (direct 
KSU connection) is used, gas discharge tubes cannot 
be installed; use method B instead. Also, in areas 
with frequent occurrences of lightning, it is recom- 
mended that the cable between the telephone com- 
pany RI-type blocks and the gas discharge tubes be 
at least 75 feet long (the cable may be coiled up if 
desired). 
A. CO LINES TEBMINATED ON BJ14 JACKS 
NEAR THE MDF 
5.3 Before using this procedure, read the 
IMPOR- 
lANTNOTES 
following paragraph 5.2. Plug one end of a two-pair mod-to-mod line cord into each telephone 
company RI14 jack. The other end of each line cord will 
later be plugged into the corresponding CO jack on the 
KSU. 
B. CO LINES TERMINATED ON BJ14 JACKS 
AWAY FROM THE MDF 
5.4 Before using this procedure, read the 
IMPOR- 
Z4NT NOTES following paragraph 5.2. Also, refer to 
Figure 3-5 on the next page for a diagram of the com- 
plete layout. 
(1) 
(2) 
(3) 
(4) 
(5) Mount one four-conductor modular jack assem- 
bly next to each telephone company RJ14 jack. 
For each modular jack assembly mounted in step 
1, also mount a corresponding four-conductor 
modular jack assembly on the MDF backboard 
next to the KSU location. 
To connect the modular jack assemblies 
mounted in steps 1 and 2: 
a. Run two-pair cable between the correspond- 
ing modular jack assemblies. 
b. Wire each end of the two-pair cables onto 
their respective modular jack assemblies. 
Refer to Figure 3-6 on the next page for a dia- 
gram of the wiring. 
Plug one end of a two-pair mod-to-mod line cord 
into each RI14 jack and plug the other end into 
the corresponding modular jack assembly beside 
it. 
At the MDF backboard, plug one end of a two- 
pair mod-to-mod line cord into each modular 
jack assembly. The other end will later be 
plugged into the corresponding CO jack on the 
KSU. 
Page 3-12