Inter-Tel Imx/Gmx 416/832 Installation Manual

							INTER-TELPRACTICES 
lMX/GMX 416/832 INSTALLATION & MAINTENANCE SPECIFICATIONS 
Issue 1. November 1994 
3.124 
Like the Tl repeater distance, the framing 
scheme type and zero code suppression scheme type are 
also available from the Tl provider. In fact, when order- 
ing a Tl span, always request the following information 
from the Tl provider: 
- Framing scheme: D4 Supexhme or ESF 
- Zero code suppression scheme: AMI or BBZS 
- If the optional on-board CSU is to be instuiled, 
dis- 
tance from 
the MDF to nearest public networkT1 
repeater (for determining the line build-out 
attenuation): 
O-1599 feet (15dB), 1600-2999 feet 
(7SdB), or 3000-6000 feet (OdB) 
3.125 Each TlC has circuitry for up to 24 trunk chan- 
nels. The 24 channels (or circuits) can be any combina- 
tion of loop start trunks, ground start trunks, DID trunks, 
El&M trunks, or OPX trunks. 
3.126 The Tl Card itself is equipped with the follow- 
ing resources: 
0 LED indicators are provided to show the status of 
each circuit and to show Tl trunk alarms and board- 
level error occurrences. Refer to the TROUBLE- 
SHOOTING section of this manual for additional 
LED information. 
l Audio jack (B-pin, B-conductor modular jack) for 
possible future use. 
NOTE: The audio jack is currently used for engi- 
neering diagnostic purposes only. 
l Alarm relay jack (B-pin, B-conductor modular 
jack) for connecting optional Tl alarm signaling de- 
vices. The Tl Card relay contact ratings are: 
0.6A at 12SVAC 
0.6A at 1lOVI.E 
2.OA at 30VDC 
l Serial port jack @S-232-C, B-pin, B-conductor 
modular jack) for possible future use. 
NOTE: The serial port jack is currently used for en- 
gineering diagnostic purposes only. 
0 Tl span jack (RJ48C, B-pin, B-conductor modular 
jack) for connecting a single, 24-channel Tl span to 
the Tl Card. (If this jack is used, do not use the op 
tional DB15 connector also provided on the card.) 
NOTE: All Tl spans should be disconnected from 
their cards before turning the system power on or off. 
They should also be disconnected before pressing 
the reset switch on the HDLC Card. 
l Dual bantam jack (with transmit and receive audio 
ports) for connecting Tl test equipment to the Tl 
Card and monitoring the transmit and receive sig- 
nals. 
CAUTION 
When a live Tl span is installed on the Tl Card, test 
equipment should be used for monitoring .purposes 
only. Do not attempt to send signals over either the 
transmit or receive audio ports on the Tl Card if a Tl 
span is installed. Also, be sure the test equipment is 
set in the “bridge” mode. 
-I 
0 Optional Tl span DB15 connector (15-pin sub- 
miniature “D” female connector) for connecting a 
single, 24-channel Tl span to the Tl Card. 
NOTE: In certain situations (e.g., when using an ex- 
ternal CSU equipped with a DB15 connector), it 
may be more convenient to use the optional DB15 
connector instead of the standard RJ48C jack also 
provided on the card. 
0 Make-busy switch with LED for removing all cir- 
cuits on the card from service and placing them back 
in again. Pressing the switch will light the LED and 
begin the process of “busying out” each circuit not in 
use. The circuits that are in use are then busied out as 
soon as the users hang up. When all circuits are 
busied out, the make-busy LED and all 24 circuit 
LE& flash slowly, and the card can be removed 
from its slot in the cabinet. If the card is not removed 
within a certain amount of time, a programmable 
timer expires and the card returns to normal opera- 
tion; however, the make-busy LED will then flash 
rapidly until the make-busy switch is released. 
l Channel Service Unit (CSU) connector for install- 
ing the optional on-board CSU Module. If the Tl 
Card interfaces with the public network, either the 
on-board CSU Module or an external CSU must be 
connected to the card. 
l DSXKSU jumper plug for indicating whether the 
on-board CSU is installed. If the on-board CSU is in- 
stalled, place the jumper plug in the CSU position. If 
there is no on-board CSU, place the jumper plug in 
the DSX position. This information must also be 
programmed in the database. 
0 Lime build-out jumper plug for selecting the proper 
line build-out (LBO) attenuation of the Tl span con- 
nected to the card. This selection is necessary only if 
the optional on-board CSU is installed. If the dis- 
tance between the equipment cabinet and the closest 
public network Tl repeater is less than 1600 feet, 
place the jumper plug in the 15dB position. Ifthe dis- 
Page 2-23  
						

							SPECIFICATIONS INTER-TELPRAcTIcES 
Issue 1, November 1994 IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
tance is between 1600 and 2999 feet, place the jump 
er plug in the 7.5dB position. And, if the distance is 
between 3CKKI and 6000 feet, place the jumper plug 
in the OdB position. This information, which can be 
obtained from the Tl provider, must also be pro- 
grammed in the database. 
3.127 Compared to the other trunk cards in the sys- 
tem, the Tl Card is very sophisticated and offers some 
unique progr 
amming options. The information that is 
programmed common to all Tl Cam% installed in the 
system includes: 
- Dialing feedbackconfiguration: When a number is 
dialed over a Tl circuit, the user hears the feedback 
from the signals (either MMF or dial-pulse, de- 
pending on how the circuit is designated). By adjust- 
ing the MMF gain control or the dial-pulse gain 
control (from -15dB to 15dB), the programmer can 
determine how loud the signals appear to the user. If 
the circuit is designated for dial-pulse signaling, the 
programmer can also select the type of dial-pulse 
tone the user hears (23 different tones are available). 
- 
Error thsholds: The programmer can set numeri- 
cal thresholds (number per hour and number per 
day) for certain Tl Card errors. If a threshold is ex- 
ceeded, an error is printed on the SMDR report. 
- Reference clock back-up priorities: Oue of the Tl 
Cards installed in the system must be programmed 
as the system reference clock (see “reference clock 
programming” following paragraph 3.128). If more 
than one Tl Card is installed in the system, the pro- 
grammer may designate one or more of the cards as a 
“back up” to the system reference clock. Then, if the 
Tl Card acting as the system reference clock fails or 
is taken out of service, the next Tl Card on the back- 
up priority list takes over. 
3.128 The information that is programmed specific to 
each Tl Card installed in the system includes: 
- Card 
type: The programmer must select the type of 
framing scheme, D4 Superframe or Extended Super- 
frame @SF), used by the Tl span connected to each 
card. 
- Zero code suppression scheme: The programmer 
must select the type zero suppression scheme, AMI 
(bit-7 stuffing) or Bipolar Eight Zero Substitution 
(BSZS), used by the Tl span connected to each card. 
PCM encoding law: In pulse code modulation 
-0 Yt  s s ems, there are two primary methods of 
encoding analog signals (sampled audio wave- 
forms) into digital signals. In North America and Ja- 
pan, the “mu-law” method is normally used. In other 
places, like Europe, the “a-law” method is widely used. The programmer must select both the transmit 
and receive method of encoding used by the Tl 
Card. In the UnitedStates, this will almost always be 
mu-law to mu-law. 
- Relay activation: If desired, the programmer may 
enable the two relays, Tl line error and Tl line OK, 
on the Tl Card. 
-- Channel service unit &Xl): The programmer 
must designate whether the optional on-board CSU 
is installed on the Tl Card. (The database selection 
must match the jumper selection on the card.) 
- Line build-out (LBO): If the optional on-board 
C!XJ is installed, the programmer must designate the 
LB0 attenuation of the Tl span connected to the 
card. This value is determined by the distance to the 
nearest public network Tl repeater. (The database 
selection must match the jumper selection on the 
card.) 
- 
DSX-1 line length: If the optional on-board CSU is 
not installed, the programmer must designate the 
length of the cabling between the Tl Card and the 
external CSU, or between the Tl Card and the other 
telephone system to which it is connected. 
- Reference clock programming: The programmer 
must first designate whether the Tl Card is con- 
nected to the public network. If it is, the card is auto- 
matically designated as a slave clock (the public 
network always acts as the master clock). If the card 
is not connected to the public network, but is instead 
connected to another Tl Card or a card in another 
telephone system, the programmer must designate 
whether the card is a master clock or a slave clock (in 
relation to the card on the other end). 
In addition, one of the Tl Cards installed in the sys- 
tem must be programmed as the system reference 
clock. The reference clock then becomes the clock 
for all the other cards in the system. If there is no Tl 
Card acting as the reference clock, the Matrix Card 
becomes the system reference clock. 
If a Tl Card is designated as both a master clock and 
the system reference clock, the programmer must 
then designate whether the card’s on-board oscilla- 
tor is the source of the clock or whether there is an 
external clock. 
NOTE: The external clock option is provided for 
possible future use only. For now, always designate 
the card’s on-board oscillator as the source of the 
clock. 
- 
Test tone: lf desired, the programmer can transmit a 
digital test tone (lCKVHx, OdBM, sine wave) over the 
selected Tl circuit. The tone can be verified bymon- 
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							INTER-TELPRACTKES 
IMWGMX 416/832 INSTAUATION & MAINTENANCE SPECWICATIONS 
Issue 1, November 1994 
itoring the transmit audio port on the card’s dual ban- 
tam jack. 
- Error diagnostics: If desired, the programmer can 
generate the current Tl error counts (by hour and by 
day) for the selected card. The error counts can be 
displayed in a graphical or tabular format, printed 
(stand-alone/remote only), or saved in a file for fu- 
ture reference. 
3.129 The information that is programmed specific to 
each circuit (i.e., each of the 24 channels) on the Tl 
Card includes: 
- Circuit type: Each individual circuit can be pro- 
grammed as a loop start, ground start, DID, E&M, or 
OPX trunk. 
- Digital gain control: As with the other trunk cards, 
should voice transmit or voice receive volume prob- 
lems occur, the programmer can adjust the receive 
gain and/or the transmit gain (-15dB to 15dB) forin- 
dividual Tl circuits. 
- DTMF’ or dial-pulse signaling: When the system is 
in the default configuration, all trunk circuits are 
configured for IYIMF signaling. If necessary, some 
or all of the circuits can be reprogrammed for dial- 
pulse signaling. 
3.130 The Tl circuits are assigned hardware address 
numbers according to the card’s slot in the equipment 
cabinet and the location of the circuit on the card. For 
example, Tl circuit 6.21 is the 21st circuit on the 6th 
card, a TIC, installed in the equipment cabinet. 
3.131 Special Tl cabling requirements: It is recom- 
mended that special high-speed data cable with the fol- 
lowing characteristics be used for all Tl installations: 
l 22AWG 
l Individually shielded two-pair (or with the transmit 
and receive pairs run in separate cables or binder 
groups) 
: 
l ABAM or PIC (a level-3 cable designed specifically 
for the T-wrier transmission rate) 
0 Maximum capacitance of lSpF/ft. 
0 Maximum attenuation of 5dB/lOOO ft. at 772kHx 
and 70” F 
NOTE: The programming prompts for LB0 attenua- 
tion and DSX-1 line length assume that proper Tl cable 
(with the above characteristics) is being used. When 
transmitting over shorter distances (e.g., when the near- 
est public network Tl repeater is less than 2OflO feet 
from the MDF), it may be possible to use standard two- 
pair voice frequency cable instead; however, the pro- 
grammer may have to compensate by selecting longer 
LB0 distances or DSX-1 line lengths. Also, no matter 
which type of cable is used, the transmit and receive 
pairs must be shielded from each other (or run in sepa- 
rate cables or binder groups). 
3.132 If the optional DB15 connector on the Tl Card 
is used in place of the standard RJ4SC jack, a flat, 
2SAWG, twisted-pair ribbon cable with a maximum ca- 
pacitance of 16pF/ft. may be used for distances of up to 
50 feet (see page 3-21 for more information). For dis- 
tances longer than 50 feet, use the special high-speed 
data cable described in paragraph 3.131. 
Page 2-25  
						

							SPECIFICATIONS 
Issue 1, November 1994 INTBB-TBLPBACTICES 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
4. STATION INSTRUMENTS 
A. MAXIMUMCApAcITIEs 
4.1 A wide variety of station instruments can be used 
on the 4161832 System. The combination of station in- 
struments depends on the number and type of station 
cards, station instruments, and power supply modules 
installed. 
The system capacity for stations is as follows: 
Total Station Instruments 832 
Keysets 
-using Digital Keysets Only 0-800 
-using 8-Line Dual-Ckt. AIMS Only o-634 
-Using Other Type Keysets Only o-384 
Attendant Computer Ccnsoles o-384 
Singl~L.ine Sets O-816* 
DWBIP units 
-using Digital units only wzoo 
-using Analog units only O-50- 
At least one Keyset Card must be installed to provide an atten- 
dant (equipped with a display keyset or an Attendant Computer 
Console) to receive system alarm messages, program system 
data, and receive unsuperv&d CO recalls When the system is 
in the default configuration, circuit 1.1 is designated as a keyset 
and the primary attendant. 
Analog Keysets, analog DSS/BII Units, and Attendant Ccm- 
puter Ccnsoles use separate KSC or KSC-D circuits. Therefore, 
for each analog DS9BI.I Unit installed, one less analog keyset 
or Attendant Computer Console may be installed. (A DSQBLF 
Unit cannot be programmed as the “B” circuit for an &line dual- 
circuit IhfK AIM keyset.) 
NOTE: Since most systems will be installed with a vari- 
ety of station and trunk cards and a variety of station in- 
struments, the maximum station and trunk capacities 
listed in this manual will rarely be reached. 
1 4.3 The maximum number of digital keysets, 8-line 
dual-circuit IMX AIM keysets, and other-type keysets 
that can be installed in a single cabinet is determined by 
the +3OV output from the corresponding power supply 
(see page 2-10). The following formula can be used to 
determine the maximum number of keysets that can be 
installed in a single cabinet. 
(&line AlMs 
X 0.0755) + (other analog keyseta X 0.125) 
+ (digital 
key&a X 0.060) = y 
The value of y must be less than or equal to 24. 
Ify is greater than 24, too many keysets are being 
installed in a single cabinet. 
B. IMX 416/832 KEYSETS 
4.4 Refer to pages 3-105 and 3-114 for MX 4161832 
1 keyset installation instructions. The following digital 
and analog models are available: Standard Digital Keysets (ati referred to as Stan- 
dard Digital Terminals) - display and non-display 
Executive Digital Keysets (also referred to as 
Executive Digital Terminals) - display only 
24Line AIh4 Keysets (display only) 
12-Line AlM Keysets (display only) 
8-Line Dual-Circuit AIM Keyseta (display only) 
24-Line Keysets (standard and display) 
12-Line Keyseta (standard and display) 
&Line Keysets (non-display only) 
NOTE: With the proper software package, the Inter-Tel 
GX station instruments can be installed on the system. 
Refer to the Appendix A in the back of the manual for 
complete information. 
4.5 For illustrations of the keysets (and other station 
instruments), refer to the drawings beginning on page 
2-41. The feature keys, speed-dial keys, call keys, and 
station programmable keys shown in the drawings are as 
they appear when the system is in the default configura- 
tion. 
4.6 The approximate dimensions of both the Standard 
and Executive Digital Keysets are: 
Height 3.0 in. (7.6 cm.) 
Width 7.5 in. (19.1 cm.) 
Length 9.0 in. (22.9 cm.) 
Weight 2.3 lb. (1.0 kg.) 
4.7 The IMX ll-line and 24line keyset dimensions 
are: 
Height 5.5 in. (14.0 cm.) 
Width 9.0 in. (22.9 cm.) 
Length 9.5 in. (24.1 cm.) 
Weight 3.1 lb. (1.4 kg.) 
4.8 The lh4X 8-line keyset dimensions are: 
Height 4.5 in. (11.4 cm.) 
Width 6.5 in. (16.5 cm.) 
Length 9.5 in. (24.1 cm.) 
Weight 2.5 lb. (1.1 kg.) 
4.9 All keysets (except as noted) have the following 
design features in their default configuration: 
0 la-key pushbutton keypad 
0 Avariety of feature keys (some of which may be des- 
ignated as user programmable) 
l IC/CO speed-dial (SD) keys with light-emitting 
diode (LED) indicators (g-line keysets do not have 
SD keys in the default configuration) 
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							INTER-TELPRACTICES 
IMX/GMX 416/832 INS’IALLATION & MAINTENANCE SPECIFICATIONS 
Issue 1, November 1994 
0 Four call keys with LED indicators for incoming call 
access and indication 
I 
l Integrated speakerphone (digital keysets have 
access to shared speakerphone resources) 
l Ring and voice volume controls (digital and AIM 
keysets have UP and DOWN keys for adjusting vol- 
ume levels) 
l Slide-out directory card 
l Self-test feature (for testing keyset functions) 
0 Hearing aid-compatible (HAC) handset 
l Reversible baseplate for wall mounting and revers- 
ible cradle hook for holding the handset on wall- 
mounted keysets 
Integrated Speakerphone 
4.10 
Abuilt-in, integrated speakerphone is standard in 
all Ih4X analog keysets. All digital keysets have a speak- 
er and a microphone for handsfree intercom reply, but 
they do not have a true integrated speakerphone. How- 
ever, the DSP(s) on the associated DKSC can be used to 
provide shared integrated speakerphone circuitry. (See 
page 4-40 for more information.) 
NOTE: If there are no DSP speakerphone resources 
available when a digital keyset user attempts to use the 
speakerphone, the MUTE key lights and display keysets 
show NO SPKR AVAIL COME OFF HOOK The user 
can only monitor the call and must lift the handset to 
speak. 
4.11 The integrated speakerphone allows users to 
place and receive outside calls and intercom calls with- 
out lifting the handset. Once a call is connected, the key- 
set user may speak handsfree over the speakerphone or 
lift the handset to speak privately. When using the hand- 
set, the user may switch to the speakerphone by pressing 
the SPKR key and replacing the handset. If enabled, 
pages and/or background music may be broadcast over 
the speaker when the phone is not being used. 
Liquid Crystal Display (LCD) 
m 4.12 All Executive Digital Keysets and all IMX AIM 
keysets (24~line, lZline, and 8-line) come equipped 
m with LCDs. Standard Digital Keysets and standard IMX 
24-line and 1Zline keysets can be converted to display 
sets by installing the appropriate LCD Unit (see RE- 
PLACEMENT PARTS for the part number). Non-ATM 
8-line keysets cannot be equipped with displays. 4.13 Each “display” keyset has a liquid crystal display 
(LCD) with two 16-character lines. The display helps 
the user to process calls more efficiently and profession- 
ally. There are display messages for date and time, num- 
bers dialed, call cost data, reminders, do-not-disturb, 
forwarding, voice mail processing, incoming calls, sta- 
tion and system status, system alarms, and program- 
ming. These displays are indicated throughout the 
m section of the manual. 
4.14 Executive Digital Keysets have four additional 
16character display lines that are associated with the 
eight menu selection keys that border them. The menu 
display changes to reflect the functions of the menu 
keys. Pressing the key next to the displayed option 
selects that option. Refer to page 4-41 in FEMURES 
for information about the available menu options. 
Electret Circuitry 
4.15 All newer keysets and handsets have been de- 
signed using “electret” microphone circuitry, rather 
than the “dynamic” microphone circuitry used on many 
previous Inter-Tel keyset models. Electret keysets and 
handsets are not electrically compatible with dynamic 
keysets and handsets. 
4.16 If a dynamic handset is attached to an electret 
keyset, the handset transmit levels will be noticeably 
lower. If an electret handset is attached to a dynamic 
keyset, the handset will not transmit. (In both cases, nei- 
ther the keyset nor the handset will be damaged.) 
4.17 Electret keysets can be identified by the man- 
ufacturer’s label on the bottom of the keyset. Electret 
handsets can be identified by the “El” embossed in the 
recess for the wall-mount hook (near the receiver). 
Optional Headsets 
4.18 
A headset may be attached to any keyset by un- 
plugging the handset from the handset jack on the base 
of the keyset, plugging the headset into the handset jack, 
and entering a feature code to enable the headset. The 
SPKR key, which is used to turn the headset on and off, 
is lit when placing and receiving calls and unlit when the 
headset is not in use. The keysets are compatible with 
industry-standard, four-conductor, modular headsets. 
The headsets can have electret or dynamic micro- m 
phones, as needed (or carbon-microphone headsets that 
are connected to the keyset through an externally 
powered jackset, which makes the headset dynamic- 
compatible). Refer to pages 3-109 and 3-120 for instal- 
lation instructions. 
Page 2-27  
						

							SPECIFICATIONS 
Issue 1, November 1994 INTEFt-TELPRACTICES 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
Optional Handset Amplifiers 
4.19 
The typical handset amplifier is an external de- 
vice that plugs into the keyset (where the handset is nor- 
mally connected); the handset is then plugged into the 
amplifier. Receiver voice volume is controlled by tum- 
ing a thumbwheel (or similar control) located on the am- 
plifier. Such amplifiers are generally equipped with a 
transformer that requires a 11OVACoutlet. Refer to page 
3-120 for installation instructions. AIM keysets do not 
require handset amplifiers. 
Optional Personal Computer Data Port Module 
(PCDPM) for Digital Keysets 
4.20 For off-hook voice announce receive capability, 
and to allow an optional digital DSS/BLF Unit and/or an 
optional Modem Data Port Module to be installed, any 
digital keyset may be equipped with an optional PC 
Data Port Module (part no. 550.3014). See page 3-109 
for instructions on installing the PC Data Port Module. 
NOTE: PCDPMs require AC transformers when they 
are connected to DSS/BLF Units only. PCDPMs do not 
require AC transformers when they are used for off- 
hook voice announce only or have attached MDPMs. 
For a diagram of AC transformer requirements, refer to 
Figure 2-2 on page 2-29. 
Optional Modem Data Port Module (MDPM) for 
Digital Keysets 
4.21 
Digital keysets equipped with PC Data Port 
Modules may also be equipped with optional Modem 
Data Port Modules (part no. 550.3015). The MDPM 
contains a jack that can be used to connect a data device 
(such as a Personal computer equipped with a modem) 
to the keyset. Each MDPM is powered by its own AC 
transformer. 
NOTE: MDPMs always require their own separate AC 
transformers. For a diagram of AC transformer require- 
ments, refer to Figure 2-2 on page 2-29. 
4.22 The data device attached to the MDPM must 
have a direct-connection modem. The modem must be 
externally powered (or capable of operating on 20mAof 
loop current) and have an RJll CO interface. The data 
device can be used by the associated keyset to com- 
municate with remote data equipment over voice chan- 
nels being used for CO or intercom calls. Refer to pages 
3-113 and 4-101 for installation and operation instruc- 
tions. 
Optional Data Port Module for IMX U-Line and 
24Line Keysets 
4.23 All IMX la-line and 24-line keysets may be 
equipped with optional Data Port Modules (refer to RE- 
PLACEMENT PARE for the part number). The mod- 
ule contains a four-conductor, RJll modular jack that 
can be used to connect either a data device (such as a 
personal computer equipped with a modem) or a loud 
ringing adapter (LRA) and an external signaling device 
(such as a loud bell, horn, flashing light, etc.) to the key- 
set. The Data Port Module is a source for 2O-26mA of 
loop current (constant current source). Refer to page 
3-121 for instructions on installing the optional Data 
Port Module. 
4.24 Specifications for modem-equipped data de- 
vice: The data device must have a direct-connection 
modem. The modem must be externally powered (or ca- 
pable of operating on 20mA of loop current) and have an 
RJll CO interface. The data device can be used with the 
keyset to communicate with remote data equipment 
over voice channels being used for CO or intercom calls. 
Refer to pages 3-121 and 4-101 for installation and op 
eration instructions. 
4.25 Specifications for loud ringing adapter 
(LRA): An external LRAmay be connected to the Data 
Port Module to provide a relay for controlling external 
signaling devices. The LRA is connected to the Data 
Port Module, and the external signaling device is con- 
nected to the LRA. See page 3-123 for installation in- 
structions. Each time the keyset rings, the Data Port 
Module provides 20-26mA of loop current to the LRA. 
This causes the LRA contacts to close and activates the 
signaling device. The LRA is not affected by the ring 
tone or ringer volume of the keyset. The LRA must be 
capable of operating on 2OmA current (approximately 
2OVDC). 
8-Line IMX AIM Keysets On Dual Circuits 
4.26 If desired, new g-line IMX AIM keysets can be 
installed two to a 
circuit using the new “dual-circuit” 
version Keyset Card (KSC-D). PO install Wine AIM 
keysets 
one to a circuit, either the KSC or the KSC-D 
can be used.) There are jumper straps on the back of the 
8-line AIM keyset to select the baud rate (2400 baud for 
two to a circuit; 1200 baud for one to a circuit) and to 
select the circuit position (A or B), depending on how 
the keyset’s circuit will be designated in database pro- 
gramming. 
4.27 Each S-line AIM keyset is shipped with a stan- 
dard (six-foot, three-pair) “flat” line cord for connecting 
the keyset to its corresponding modular jack assembly. 
For most installations, this flat line cord is more than ad- 
equate. However, when B-line AIM keyset are installed 
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							INTER-TELPRACTICES 
IMX/GMX 416/832 INSTALIATION & MAINTENANCE SPECIF’ICATIONS 
Issue 1, November 1994 
two to a circuit, low-level crosstalk between the two sta- 
tions sharing the circuit may occur in certain situations. 
This is because the wires in a flat line cord are parallel to 
each other for long distances, thereby providing a sus- 
ceptibility to audio bleedover. The level of crosstalk is 
dependent on the voice volume of the users, the length 
of the line cord, and the station cable loop length. 
4.28 To eliminate this low-level crosstalk, if neces- 
sary, replace the flat line cord with a twisted-pair line 
cord that has the following characteristics: 
0 Telco orientation (rather than data) 
l 2&gauge, stranded 
l 6to8twistsperfoot 
l Equipped with connectors designed specifically for 
round, twisted-pair line cord 
4.29 Charcoal and grey twisted-pair line cords of vari- 
ous lengths can be purchased from a local supply house 
or directly from a cable distributor, such as: 
AmericanSources 
Interstate Business Park #806 
.Fredericksburg, VA 22405 
Phone: (703) 899-3777, FAX: (703) 371-4350 
Pt. No.: LCM65oxL (Grey), LCM66OxL (Charcoal) 
(whe-re x = length in feet; e.g., LCM6502SL. is a 25 ft. grey cord) 
FIGURE 2-2. DIGITAL AC TRANSFORMER REQUIREMENTS 
I AC = AC transformer required 
e-F1 (for off-hook voice announce only) 
I 
PCDPM 
I 
NOTE: Digital DSWBLF Units and MDPMs always require their own separate AC transformers. PCDPMs 
require AC transformers when they are connected to DSS/BLF Units only. PCDPMs do nor require AC trans- 
formers when they are used for off-hook voice announce only or have attached MDPMs. 
Page 2-29  
						

							SPECIFICATIONS 
Issue 1, November 1994 INTER-TELPRACTICES 
IMWGMX 416/832 INSTALLATION & MAINTENANCE 
C. GMX-416/832 KEYSETS 
4.30 A maximum of 208 keysets (416 on expanded 
systems) can be connected to the GMX-416/832 Sys- 
tem. Refer to page 3-124 for Gh4X-416/832 keyset in- 
stallation instructions. The following analog models are 
available: 
Inter-Tel/DVK 24-Line Keysets (standard and dis- 
play) 
Inter-Tel/DVK 12-Line Keysets (standard and dis- 
play) 
Inter-Tel/DVK 8-Line Keysets (standard and dis- 
play) 
GMX 24-Line Keysets (standard and display) 
GMX 12-Line Keysets (non-display only) 
GX 24-Line Keysets (standard and display) 
NOTE: For more information on the GX and GMX key- 
sets, refer to appendixes A and B in the back of this 
manual. 
4.31 For illustrations of the Inter-Tel/DVK keysets, 
refer to the drawings beginning on page 2-41. The fea- 
ture keys, speed-dial keys, call keys, and station pro- 
grammable keys shown in the drawings are as they 
appear when the system is in the default configuration. 
4.32 The Inter-Tel/DVK 24-line keyset dimensions 
are: 
Height 3.8 in. (9.7 cm.) 
Width 9.2 in. (16.5 cm.) 
Length 9.5 in. (24.1 cm.) 
Weight 2.8 lb. (1.3 kg.) 
4.33 The Inter-Tel/DVK ll-line keyset and g-line 
keyset dimensions are: 
Height 3.8 in. (9.7 cm.) 
Width 7.0 in. (17.8 cm.) 
Length 9.5 in. (24.1 cm.) 
Weight 2.5 lb. (1.1 kg.) 
4.34 All Inter-Tel/DVK keysets have the following 
design features in their default configuration: 
0 12-key pushbutton keypad 
l Avariety of feature keys (some of whichmay be des- 
ignated as user programmable) 
0 IC/CO speed-dial (SD) keys with light-emitting 
diode (LED) indicators 
0 Four call keys with LED indicators for incoming call 
access and indication Integrated speakerphone 
Ring and voice volume controls (using the VOL Up 
and VOL DN keys) 
Slide-out directory card 
Self-test feature (for testing keyset functions) 
Hearing aid-compatible (HAC) handset 
I Reversible baseplate for wall mounting 
Integrated Speakerphone 
4.35 Abuilt-in, integrated speakerphone is standard in 
all keysets. The integrated speakerphone allows users to 
place and receive outside calls and intercom calls with- 
out lifting the handset. Once a call is connected, the key- 
set user may speak handsfree over the speakerphone or 
lift the handset to speak privately. When using the hand- 
set, the user may switch to the speakerphone by pressing 
the SPKR key and replacing the handset. If enabled, 
pages and/or background music may be broadcast over 
the speaker when the phone is not being used. 
Liquid Crystal Display (LCD) 
4.36 Each “display” keyset has a liquid crystal display 
(LCD) with two 16-character lines. The display helps 
the user to process calls more efficiently and profession- 
ally. There are display messages for date and time, num- 
bers dialed, call cost data, reminders, do-not-disturb, 
forwarding, voice mail processing, incoming calls, sta- 
tion and system status, system alarms, and program- 
ming. These displays are indicated throughout the 
m section af the manual. 
4.37 All standard Inter-Tel/DVK keysets can be con- 
verted to display sets by installing an LCD Unit. The 
24-line keysets use the large LCD Kit (part no. 
828.1166). The ll-line and 8-line keysets use the 
mall 
LCD Kit (part no. 828.1165). 
Electret Circuitry 
438 All newer keysets and handsets have been de- 
signed using “electret” microphone circuitry, rather 
than the “dynamic” microphone circuitry used on many 
previous Inter-Tel keyset models. Electret keysets and 
handsets are not electrically compatible with dynamic 
keysets and handsets. 
439 If a dynamic handset is attached to an electret 
keyset, the handset transmit levels will be noticeably 
lower. If an electret handset is attached to a dynamic 
keyset, the handset will not transmit. (In both cases, nei- 
ther the keyset nor the handset will be damaged.) 
4.40 Electret keysets can be identified by the man- 
ufacturer’s label on the bottom of the keyset. Electret 
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							INTEFbTJzLPRACTICES 
IM.X/GMX 416/832 INS’IILLATION & MAINTENANCE SPECIFICATIONS 
Issue 1, November 1994 
” I 
handsets can be identified by the “El” embossed in the 
recess for the wall-mount hook (near the receiver). 
Optional Headsets 
4.41 A headset may be attached to any keyset by un- 
plugging the handset from the handset jack on the base 
of the keyset, plugging the headset into the handset jack, 
and entering a feature code to enable the headset. The 
SPKR key, which is used to turn the headset on and off, 
is lit when placing and receiving calls and unlit when the 
headset is not in use. The keysets are compatible with 
industry-standard, four-conductor, modular headsets 
that have dynamic microphones, or carbon-microphone 
headsets that are connected to the keyset through an ex- 
ternally powered jackset (which makes the headset dy- 
namic-compatible). Refer to page 3-129 for installation 
instructions. 
Optional Data Port Module 
4.42 All Inter-TeVDVKkeysets maybe equipped with 
optional Data Port Modules (refer to REPLACEMENT 
PARTS for the part number). The module contains a 
four-conductor, RJll modular jack that can be used to 
connect eizher a data device (such as a personal comput- 
er equipped with a modem) 
or a loud ringing adapter 
(LRA) and an external signaling device (such as a loud bell, horn, flashing light, etc.).to the keyset. The Data 
Port Module is a source for 2O-26mA of loop current 
(constant current source). Refer to page 3-130 for in- 
structions on installing the optional Data Port Module. 
4.43 Specifications for modem-equipped data de- 
vice: The data device must have a direct-connection 
modem. The modem must be externally powered (or ca- 
pable of operating on 20mAof loop current) and have an 
RJll CO interface. The data device can be used with the 
keyset to communicate with remote data equipment 
over voice channels being used for CO or intercom calls. 
Refer to pages 3-130 and 4-101 for installation and op 
eration instructions. 
4.44 Specifications for loud ringing adapter 
(L&Q: An external LRAmay be connected to the Data 
Port Module to provide a relay for controlling external 
signaling devices. The LRA is connected to the Data 
Port Module, and the external signaling device is con- 
nected to the LRA. Refer to page 3-132 for installation 
instructions. Each time the keyset rings, the Data Port 
Module provides 20-26mA of loop current to the LRA. 
This causes the LRA contacts to close and activates the 
signaling device. The LRA is not affected by the ring 
tone or the ringer volume of the keyset. The LRA must 
be capable of operating on 20mA current (approximate- 
ly 2OvDC). 
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							I 
I 
SPECIFICATIONS 
Issue 1, November 1994 INTER-TELPRACTICES 
lMX/GMX 416/832 INSTALLATION & MAINTENANCE 
D. IMX 416/832 DSS/BLF UNITS 
4.45 The lMX 416J832 System can have as many as 
50 keyset circuits equipped with Direct Station Selec- 
tion/Busy Lamp Field @SS/BLF) Units. For example, 
there could be a maximum of 50 digital keysets (i.e., 
DKSC circuits) equipped with up to four digital DSS/ 
BLF Units each. Or, there could be a maximum of 50 
KSC or KSC-D circuits equipped with one analog DSS/ 
BLF Unit each. Or, there could be any combination of 
the two using up to 50 keyset circuits. 
4.46 Bach unit provides one-key access to 60 num- 
bers. The numbers can be station extension numbers, 
hunt group pilot numbers, system feature codes, or sys- 
tem speed-dial numbers. 
4.47 Digital DSS/BLF Units are physically attached 
to and programmed to be used with specific digital key- 
sets. The units are connected in series to the PC Data 
Port Module (PCDPM) on the back of the corresponding 
keyset. Unlike analog units, digital DSS/BLF Units do 
not require station cabling separate from the keyset’s 
cabling; instead, they are powered by their own AC 
transformer. If desired, all units can be connected to 
keysets installed on the same Digital Keyset Cards. (Re- 
fer to page 3-133 for digital DSS/BLF Unit installation 
instructions.) 
NOTE: Digital DSS/BLF Units always require their 
own separate AC transformers. For a diagram of AC 
transformer requirements, refer to Figure 2-2 on page 
2-29. 
4.48 Analog DSS/BLF Units are programmed to be 
used with specific analog keysets, but are not physically 
attached to the keysets. The units can be distributed 
among several keysets or, if desired, they can be 
assigned to one keyset. Bach unit requires a KSC or 
KSC-D circuit that is separate from the keyset’s circuit. 
If50 station circuits areused for analog DSS/BLFUnits, 
50 fewer analog keysets and/or Attendant Computer Consoles can be installed. Up to four analog units can be 
installed on a single Keyset Card. (Refer to page 3-135 
for IMX DSS/BLF Unit installation instructions.) 
4.49 For illustrations of the DSS/BLFUnits (and other 
station instruments), refer to the drawings begimring on 
page 2-41. 
4.50 Digital DSS/BLF Unit dimensions are: 
Height 3.0 in. (7.6 cm.) 
Width 7.5 in. (19.1 cm.) 
Length 9.0 in. (22.9 cm.) 
Weight 1.7 lb. (0.8 kg.) 
I 
4.51 IMX DSS/BLF Unit dimensions are: 
Height 5.5 in. (14.0 cm.) 
Width 9.0 in. (22.9 cm.) 
Length 9.6 in. (24.1 cm.) 
Weight 2.0 lb. (0.9 kg.) 
4.52 As stated earlier, each DSS/BLF Unit provides 
one-key access to up to 60 numbers. These numbers can 
be station extension numbers, hunt group pilot numbers, 
or system feature codes, or system speeddial numbers. 
m 
The layout of the keys and the numbers they access are 
assigned using one of up to eight key maps (12 in expan- 
ded systems) in database programming. 
4.53 Together, the lamps in the keys create a busy 
lamp field that indicates the status of each station or hunt 
group assigned to the 
keys. The LED indicator in the key 
is solidly lit when the associated station is busy, flashes 
slowly when the station is in do-not-disturb, flashes fast 
when the station has a call ringing in, or flutters continu- 
ously if the station is causing a STATION OFF-HOOK 
system alarm. If assigned to a hunt group, the LED indi- 
cator is solidly lit when all stations in the hunt group are 
unavailable (busy, forwarded, in do-not-disturb, or re- 
moved from the hunt group) and it flashes fast when a 
call is camped on to a hunt group. 
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