Inter-Tel Glx Installation And Field Maintenance Manual

							INTER-TEL PRACTICESOVERVIEW
GLX INSTALLATION 
tit MAINTENANCEIssue 1,November 1985
OVERVIEW
CONTENTS
PAGE
1.INTRODUCTION.............................................l-l
2.HARDWARESUMMARY.........................................l-l
3.INSTALLATION AND MAINTENANCE SUMMARY.....................l-l
4.FEATURES SUMMARY.........................................l-2
1.INTRODUCTION
1.01 The Inter-Tel GLX System is a versatile, electronic key
telephone system designed to meet the needs of small businesses.
The system is easy to install and maintain, and it offers a
variety of features usually found on more expensive systems.
Highlights of the systems design include:
l Advanced microprocessor technology.
l Flexible programming to customizesystem and station fea-
tures.
l Capacity for up to 6 central office (C.O.) lines, 12 key-
sets,and 2 private intercom channels.
2.HARDwAREsuMMARY
2.01 The SPECIFICATIONS section of this manual describes the
hardware,including the Key Service Unit (KSU), keysets, and the
additional equipment needed for optional features.
3.INSTALLATION AND MAINTENANCE SUMMARY
3.01 The INSTALLATION section contains instructions for assem-
bling the main distributionframe and installing the KSU, key-
sets,and optional equipment.The PROGRAMMING section describes
the proceduresfor programming the data base.The TROUBLE-
SHOOTING section contains instructions for correcting system
problems.Part numbers and a recommended inventory list are
located in the REPLACEMENT PARTS section.
-. . :.
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							INTER-TEL PRACTICESOVERVIEW
GLX INSTALLATION 
& MAINTENANCEIssue 1,November 1985
3.02 Strict quality control standards for manufacturing and
thorough field testing providethe system with the reliability
demanded by todays high-technology market.
.
4.FEATURES SUMMARY
4.01 A list of features appears below.Features marked with an
asterisk 
(*) are programmable.
For detailed descriptions and
operating
instructions,refer to the FEATURES section of this
manual.
:__
NOTE:Additional equipment is required for some features.
Refer
to the SPECIFICATIONS and INSTALLATION sections for more informa-
tion.
System Features
**
*0
0
0
0
0
0
0
*0
* l
-* l
0
l
0
0
Flexible incoming ring assignments (alternate point answer-
ing)
Flexible night ringing arrangement (night ring mode)
Data base battery back-up
System battery back-up
Dual-tone multi-frequency (DTMF) signalling
Music-on-hold
Background music
Call privacy
C.O. line restriction
Toll restriction
System timers
Internal and external paging
Conference calls
Call forwarding (internal and to the public network)
Do-not-disturb
Keyset Features
6 line keys
Feature keys (6 on Standard 
Keyset, 12 on Executive Keyset)
LED indications
Direct station selection/busy lamp field 
(DSS/BLF) keys on
the Executive 
Keyset
Immediate ringing
Off-hook ringing
Volume controls
Handset amplifier compatible
Integrated speakerphone
Headset compatible
Data device interface on the Executive 
Keyset
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							INTER-TEL PRACTICES
GLX INSTALLATION 
& MAINTENANCEOVERVIEWIssue 1,November 1985
Intercom Features
l Handsfree answering of intercom calls
* 
l Ring intercom first
0 Private intercom calls
l DSS/BLF key skipping on the Executive Keyset
l Intercom camp-on and call waiting
Outside Call Features
lDirect line key selection
* lOutside dial tone restore
* lTimed hookflash
lLine key skipping
lOn-hook dialing
lSpeed dialing
lLast number redial
lSystem hold
lIndividual hold on the Executive Keyset
* lAutomatic recall timers
lOutside call waiting
lCall transfer from the Executive Keyset
4.02Some of the features have maximum capacities that are de-
pendent on the availability of speech channels and/or circuits.
The features that have capacities include the following:
Paging
Internal zone
1
External zone1
Speed dialing
Numbers per 
keyset
Numbers per system
Digits per number
9
30
32
Conference calls
Parties per conference2
5
Call waiting
Intercom calls waiting per station
1
Intercom calls initiated per station1
Outside calls ringing in per station6
Last number redial
Number per 
keyset
Digits per number
1
32
Page 1-3 
						

							INTER-TEL PRACTICES
SPECIFICATIONS
GLX INSTALLATION 
& MAINTENANCEIssue 1,November 1985
SPECIFICATIONS
CONTENTS
PAGE
1.
2.
3.
4.
5.
1.
INTRODUCTION
............................................2-l
CABLING AND THE MAIN DISTRIBUTION FRAME (HDF)...........2-2
KEYSERVICE UNIT (KSU)
..................................2-3
A.KSU DESCRIPTION
.....................................2-3
B.ENVIRONMENTAL REQUIREMENTS
..........................2-5
C.CENTRAL OFFICE (C.O.) LINE CHARACTERISTICS..........2-5
D.POWER SUPPLY
........................................2-5
E.MAIN CONTROL PRINTED CIRCUIT BOARD (PCB)............2-6
F.EXPANSION PCB
.......................................2-6
KEYSETS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..*..............2-9
OPTIONAL EQUIPMENT. . . . . . . . . . . . . . ..*.....................2-12
INTRODUCTION
1.01 This section describes the system hardware:
a Cabling and the Main Distribution Frame (MDF)
l Key Service Unit (KSU)
l Keysets
l Optional Equipment
1.02 The GLX System has a basic capacity for 3 C.O. lines and 8
keysets.Installing the optional Expansion printed circuit board
(PCB) increases the system.capacity to 6 C.O. lines and 
12key-
sets.There are two keyset models:
the Executive Keyset and the
Standard 
Keyset.
1.03 Optional equipment which can be installed with the GLX KSU
includes a paging amplifier and speakers,
a music source for
music-on-hold and background music,
a battery back-up source, and
a surge/spike protector for the AC power source.
Optional equip-
ment for both 
keyset modelsincludes a handset amplifier and a
headset.The Executive Keyset also
is compatible with a data
device equipped with a direct-connection modem.
t
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Page 2-l 
						

							INTER-TEL PRACTICES
SPECIFICATIONS
GLX INSTALLATION 
& MAINTENANCEIssue 1,November 1985
2.CABLING AtiD THE MAIN DISTRIBUTION FRAME (MDF)
2.01 Main distribution frame (MDF):
The MDF is the point where
the KSU, 
keysets, and C.O.
lines are connected to one another. A
3 X 4-foot (0.9 X 1.2-meter),
3/4-inch plywood backboard is re-
quired to provide support for the KSU, connecting block(s), and
modular jack assemblies.
2.02 Station cabling:
a-pair twisted cable is run in a star
(home-run) configurationfrom the KSU to each 
keyset location.
All station cables are terminated on the 
66Ml-50-type connecting
block that is mounted on the MDF backboard.
The other end of
each station cable is terminated on a 4-conductor modular jack
assembly at the 
keyset location.
As an interface between the
station block and the KSU,one end of a 25-pair cable is termi-
nated on the block;the other end has a female amphenol-type con-
nector which attaches to the male connector on the KSU.
Finally,
bridging clips are installed to complete the connections on the
block.
2.03 C-0.line terminations:As specified in FCC regulations,
the C.O.lines should be terminated on telephone company RJ14 (C
or 
W) jacks or on an RJ21X block.
It is recommended that gas
discharge tubes be installed on the C.O.
lines for additional
lightning protection.Three methods of terminating C.O. lines
are provided in the INSTALLATION section,
with complete details
about needed supplies and procedures.
The three methods are as
follows:
l If the C-0. lines are terminated on RJ14 jacks mounted near
the MDF:Every two C.O.lines are connected directly to
the corresponding C.O. jacks on the KSU, using 2-pair 
mod-
to-mod line cords.
l If the C.O. lines are terminated on RJ14 jacks mounted away
from the MDF:Using a 2-pair line cord, every two C.O.
lines are first terminated from the RJ14 jacks onto modular
jack assembliesthat are mounted next to the RJ14 jacks.
Using 2-pair cable,the lines are extended to modular jack
assemblies that are mounted on the MDF backboard.A 2-pair
mod-to-mod line cord completes the connection from the jack
assembly to the corresponding C.O. jack on the KSU.
For a
diagram of this method, turn to page 3-11.
l If the C-0.lines are terminated on an RJ2lX block:A 25-
pair cable terminates the C.O.lines from the RJ21X block
onto a 
66Ml-50-type connecting block on the MDF backboard.
For every two C.O. lines,
a 2-pair cable (or cross-connect
cable) is connected from the block to a 4-conductor modular
- jack assembly that is mounted next to the KSU.Then a 2-
pair mod-to-mod line
cord completes the connection from
each jack assembly to the corresponding C.O.
jack on the
KSU.For a diagram of this method, turn to page 3-13.
Page 2-2 
						

							INTER-TEL PRACTICES 
GLii INSTALMTION & gAIjgTEiuAfiCE SPECIFICATIONS 
issue 
1, November 1985 
3. KEY SERVICE*UNIT (KSU) 
A. 
KSU DESCRIPTION 
3.01 The KSU is a compact, wall-mounted unit that houses the 
system power supply, the Main Control PCB, and the optional Ex- 
pansion PCB. 
The KSU performs all control and switching activi- 
ties for the system, including detecting incoming C.O. calls, 
storing speed-dial numbers, processing data-controlled features, 
and controlling the interaction between keysets, C.O. lines, and 
intercom channels. Refer to the next page for a photograph of 
the KSU. 
3.02 The system is a microprocessor-controlled, space-division 
switching system. The 14 audio channels include: 
3-03 
3.04 
a 
0 
0 
0 
C.O. lines 6 
Intercom 2 
Music-on-hold 2 
External page 1 
Conference 2 
Background music 1 
The KSU dimensions and weight are: 
Height 15 in. (38.1 cm.) 
Width 11.5 in. (29.2 cm.) 
Depth 4.25 in. (10.8 cm.) 
Weight 12 lbs. (5.4 kg.) 
Inputs and outputs on the KSU side panels are as follows: 
Three C.O. 
line modular jacks (C.O. 
1-2, 3-4, 5-6) serve as 
inputs for two C.O. lines each. 
The male amphenol-type connector (STN l-12) serves as the 
input for all keysets. 
The external paging jack (E-PAGE), a l/8-inch mini-phone 
jack, is the output to a customer-provided paging ampli- 
fier. 
The music jack (an RCA-type phono jack) is the input for a 
customer-provided external music source, 
such as a radio, 
tape player, etc. 
The battery back-up jack (BATT 3OV) is the input for a 
customer-provided battery charger and/or 30V battery pack, 
NOTE: Refer to page 2-12 for specifications on the 
optional equipment mentioned above. 
: 
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Page 2-3  
						

							INTER-TEL PRACTICES SPECIFICATIONS 
GLX INSTALLATION & MAINTENANCE Issue 1, November 1985 
e FIGURE 2-1. KEY SERVICE UNIT (KSU) 
3 C.O. 
MODULAR JACKS 
AMPHENOL-TYPE 
CONNECTOR - 
FOR ALL KEYSETS 
----2___ 
: 
;-. 
-. 
RUN LED 
ERROR LED 
POWER 
ON/OFF SWITCH 
PROGRAM ENABLE 
__. .--- 
UN/OFF SWITCH 
EXTERNAL 
PAGING JACK 
MUSIC JACK 
BATTERY 
BACK-UP JACK 
AC FUSE 
AC POWER CORD 
Page 2-4  
						

							INTER-TEL PRACTICES 
GLX INSTALLATION & MAINTENANCE SPECIFICATIONS 
Issue 1, November 1985 
3.05 The environmental requirements for the KSU are as follows: 
Requirements In Operation 
Temperature 
32O to 80° F 
(O to 26.5O C) 
Humidity 20% to 85% 
Altitude 
UP 
(3, 
to 10,000 ft. 
048 m.) 
c. CENTRAL OFFICE (C-0.) LINE CHARACTERISTICS In Storage 
4O to 185O F 
(-15.5O to 85O C) 
0% to 85% 
up to 40,000 ft. 
(12,192 m.) 
3.06 The following information may be requested by the telephone 
company before the system is installed. The system is designed 
for use in areas served by DTMF central offices and cannot be 
used in areas served by dial pulse central offices unless a DTMF- 
to-rotary converter is installed on each of the C.O. lines. 
Characteristics 
Transmission loss through system, excluding 
conference calls 
Ringer equivalence number 
Ringing voltage required OdB 
0.2A 
40VRMS minimum 
System Protection from C.O. Line Surges 
Tip to Ring 250VRMS transient 
D. POWER SUPPLY 
3.07 The KSU power supply converts the AC input voltage to the 
DC voltages required by the system. 
The AC power source must be 
an isolated, dedicated, 105-125VAC, 15A, 57-63Hz, single-phase, 
commercial power source. Inter-Tel recommends that the system be 
installed with a surge/spike protector with RFI/EMI noise filter- 
ing for the AC power line. (Refer to page 2-12 for information.) 
A 2A, 25OV, slow-blow fuse protects 
the system from excessive 
current draw. For continued system protection, replace only with 
a fuse of the same type and rating. 
, 
: 
Page 2-5  
						

							INTER-TEL PRACTICES SPECIFICATIONS 
GLX INSTALLATION & MAINTENANCE 
Issue 1, 
November 1985 
E. 
MAIN CONTROL PRINTED CIRCUIT BOARD (PCB) 
3.08 The Main Control PCB contains the main controlling micro- 
processor and its associated control logic and memory circuitry, 
a battery for data base protection, system timers, circuitry for 
music-on-hold and external paging, and circuitry for three C.O. 
lines and eight keysets. Refer to Figure 2-2 on the next page 
for a photograph of the PCB. 
3.09 The Main Control PCB functions under the control of a pro- 
gram that is activated when the KSU is powered up. The PCB is in 
constant communication with the microprocessor in each keyset. 
3.10 There are 8K bytes of random-access memory (RAM) and a min- 
imum of 16K bytes of read-only memory (ROM) for use by the Main 
Control PCB. The software code for the main generic program is 
stored in the non-volatile ROM memory, 
and the programmed data 
base and speed-dial numbers are stored in the RAM memory. 
3.11 The RAM memory is protected by a lithium battery. The bat- 
tery will protect the programmed data base until the accumulated 
system downtime exceeds one year. Under normal system use, the 
battery should last approximately 10 years. The PCB is shipped 
with a piece of paper between the battery and the battery clip to 
nrevent any discharge i~n_til the I(.St.l is installed, 
IT--- ---- 
3.12 The system timers provide timeout limits for nine system 
features. All timers are preset during initialization and seven 
of the timers are programmable. The timers are described in the 
PROGRAMMING section. 
3.13 If a customer-provided music source is installed, the 
music-on-hold circuitry provides two channels of music for two 
C.O. lines on hold. Refer to page 7-4 for more information. In 
addition, the music source can be heard through keyset speakers 
as background music, and camped-on intercom callers hear the 
music while waiting. The music-on-hold circuitry automatically 
holds the volume to a predetermined level that is slightly lower 
than normal voice volume, as required by FCC regulations. 
The 
optimum input level is l.OVRMS. 
3.14 There are three lA, 25OV, fast-acting fuses on the PCB to 
protect the KSU and keysets from excessive current flow. 
For 
continued protection, replace only with fuses of the same type 
and rating. 
F. EXPANSION PCB 
3.15_ Circuitry for an additional 3 C.O. 
lines and 4 keysets can 
be added to the Main Control PCB to expand the systems capacity 
to 6 C.O. lines and 12 keysets. The circuitry is contained on an 
optional Expansion PCB that plugs into the Main Control PCB. 
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							INTER-TEL PRACTICES 
SPECIFICATIONS 
GLX INSTALLATION & MAINTENANCE 
Issue 1, 
November 1985 
FIGURE Z-2. 
MAIM CONTROL PCB 
3 CO. 
MODULAR. 
JACKS 
MALE 
PHENOL-TYP 
CONNECTOR 
FDR ALL 
KEYSETS 
POWER 
SUPPLY 
A LITHIUM BATTERY 
n 3 3 STATION FUSES 
1 
/ 2 ROM INTEGRATED 
CIRCUITS 
- 
:.. j 
.. 
: 
-: 
.’ : 
1 ‘OR 
.: 
i:.::; :’ 
:_. 
,‘. 
Page 2-7