Inter-Tel Imx/Gmx 416/832 Installation Manual

							FEATURES Issue 1, November 1994 INTER-~PRACTICES 
IMWGMX 416/832 INSTALLATION 8z MAINTENANCE 
J. LEAST-COST ROUTING &CR) 
4.63 
LCR is a money-saving feature that allows the 
system to be programmed to select the desired route for 
placing outgoing calls. For example, the system may be 
programmed to always place calls using the leastex- 
pensive route. It can be used for placing outgoing calls 
or transferring calls to outside telephone numbers, but 
cannot be used for forwarding calls to outside telephone 
numbers. Stations can be programmed to use LCR only 
for placing outgoing calls. 
NOTE: The Least-Cost Routing (LCR) feature cannot 
be used in the RF-rated system. If a user attempts to en- 
ter the LCR feature code or presses an LCR key, the sys- 
tem sends reorder tones. Programmable feature keys on 
keysets and single-lines are defaulted to LCR in a RF- 
rated system and should be changed. 
4.64 When LCR is selected, the user dials the number 
(including the area code, if needed), and the system does 
the following: 
Checks the area code and/or offke code: The data- 
base contains up to 19 lists of area and office codes 
called route groups. The system checks the route 
groups in numerical order (1-19) and selects the first 
group that contains the area and/or office code that 
was dialed. Special route groups are included in the 
software for handling calls that begin with 0, 01, and 
011. 
Checks the time of day: Each route group has three 
time blocks: day (8:00 AM - 4:59 PM), evening 
(500 PM - lo:59 PM), and night (11:00 PM - 7:59 
AM and weekends). 
Selects a facility group: Each time block contains 
programmed groups of up to 142 trunk groups each, 
called facility groups. There can be 24 facility 
groups in standard systems and up to 32 in expanded 
systems. The groups should be programmed so that 
the least-expensive group of trunks is checked and, 
if available, is selected first. If the least-expensive 
group is not available and the station has LCR camp- 
on permission, the station camps on until a trunk is 
available or the LCR Advance timer expires. If the 
timer expires, the user hears a progress tone and the 
system checks the next facility group. 
NOTE: The system advances only as far as each sta- 
tion’s assigned LCR advance limit allows. 
Adds or deletes diiits according to the facility 
group chosen: 
Each facility group has a pro- 
grammed set of dial rules that tell the system what to 
dial. (The system can have up to 32 dial rules -28 
of which are programmable. Each facility group can 
use 1 to 32 dial rules.) For example, if the selected 
facility group requires that the number contain “1,” but no area code, the dial rules include the “1” and 
drop the area code. The modified telephone number 
can contain up to 48 digits. 
Checks for toll restrictions: Once the number has 
all of the necessary digits added or deleted, the sys- 
tem checks the SCOS and trunk group restrictions 
for the station to determine whether the call is al- 
lowed. If allowed, the system continues to the next 
step. If not allowed, the system selects another facil- 
ity group. If the station is restricted from all of the 
facility groups in the route group, the system sends 
reorder tones and the call is dropped without being 
dialed. 
NOTE: If more than one trunk group is assigned to a 
facility group, only the highest numbered trunk 
group is checked for toll restriction. That trunk 
group’s toll restriction programming is applied to all 
other trunk groups in the facility group. Therefore, 
to restrict calls, ensure that the highest numbered 
trunk group in the facility group has the desired toll 
restriction programming. Toll restriction is checked 
each time a new facility group is accessed, allowing 
individual facility groups within each route group to 
have different toll restrictions. 
Dials the modified telephone number: If the num- 
ber is allowed, the system seizes an idle trunk in the 
selected trunk group, waits for the Dial Tone Wait 
timer to expire (unless IYI detect is enabled), and 
then dials. The user hears a single progress tone and 
outside dial tone. If the system DTMP tones are not 
muted and the station is not programmed for “trans- 
parent LCR” the user also hears the dialing sequence 
while the call is being placed. 
4.65 When LCR is used, the station user hears a single 
confirmation tone when a call key, the LCR key, the 
OUT key, or the OUTGOING key is pressed or when the 
feature code is entered. The user does not hear dial tone, 
but will hear the digits being sent on the trunk. The user 
is connected to the trunk once the system has completed 
dialing the call and the call appears under an available 
call key. 
Operator-Assisted/International LCR 
4.66 The Least-Cost Routing feature has special route 
groups to handle calls that begin with “0” (operator as- 
sisted calls), “01” (operator assisted international calls), 
and “011” (station-to-station international calls). 
4.67 Each of these special route groups contains three 
time blocks (day, evening, and night/weekend) and each 
time block contains an ordered list of facility groups. 
Country codes, area codes, and office codes are not 
checked; all calls that begin with “0,” “01,” or “011” are 
automatically sent to the appropriate route group. 
Page 4-32  
						

							I 
INTEFGTELPRACTICES 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE FEATURE!3 
Issue 1, November 1994 
‘Itansparent LCR 
4.69 Transparent LCR mode is a station option that 
changes what the user hears so that an LCR call sounds 
like an outside call placed using direct trunk group ac- 
cess. With this mode, dial tone is heard when a call key 
or the LCR, OUT, or OUTGOING key is pressed or 
when the feature code is entered. Dial tone stops when 
the user begins dialing. No tones are heard by the user 
while the system is dialing the number out on the trunk. 
When the system is in the default state, this feature is en- 
abled. 
LCR-Only Forced Account Codes 
4.69 Forced account codes for toll calls can be 
programmed for stations with LcR-Only toll restriction 
in day andnight modes. When this account code type is 
enabled, the user only has to enter an account code if the 
system detects that a toll call has been dialed when LCR 
is used. See pages 4-62 and 4-66 in FEMWRES, and 
page 5-54 in PROG RAMMING for more information. 
LCR Advance Limit 
4.70 In addition, stations are assigned day and night 
mode LCR advance limits that determine the number of 
facility groups that the call may advance through when 
LCR is used. (When facility groups are busy or unavail- 
able, LCR is generally programmed to advance from the 
least expensive facility group to the more expensive fa- 
cility groups.) 
4.71 Before assigning an LCR advance limit, deter- 
minations should be made as to exactly how many facil- 
ity groups a station user may be allowed to advance 
through, should the less expensive facility group trunks 
be busy. Consideration should be given asto how impor- 
tant it is that the call go out immediately, or whether it is 
more important that the caller wait for a less expensive 
trunk to become available. 
4.72 An LCR advance limit is assigned to each sta- 
tion, even those not assigned LCR Only (SCOS 6). Each 
station is given a numerical advance limit, “unlimited,” 
or “no advance.” The numerical advance limit designa- 
tions indicate the number of facility groups through 
which the station can advance. Stations with “no ad- 
vance” will not advance past the first facility group in 
each route group, stations with “1” may advancc once 
(to the next programmed facility group), and so on. Sta- 
tions with the “unlimited” designation may advance 
through all programmed facility groups in each route 
group. The default designation for all stations is “unlim- 
ited.” 
4.73 lf a station is restricted from the trunks in a facil- 
ity group or if the LCR-modified telephone number is 
toll restricted due to its station class of service, the sys- 
tem will immediately proceed to the next facility group 
and will count this as one advance. 
NOTE: LCR advance limit assignment applies to all 
route groups and all time blocks. 
Page 4-33  
						

							FEATURES Issue 1, November 1994 INTER-TELPRACTICES 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
K. E&MTRUNKS 
NOTE: This feature is available only in the ExrenuU 
plus Tl and E&h! software packages. 
4.74 E&M trunks, also called “tie” lines, are special 
trunks that tie two distant telephone systems together. 
They allow the users of either telephone system trans- 
parent access to the users and resources of the other tele- 
phone system, often for less than what it would cost to 
use normal long distance service. 
Incoming E&M Calls 
4.75 There are two modes of ring-in for E&M trunks: 
auto ring-in and dial-repeating. 
0 Auto ring-in E.&M trunks, like standard trunks, may 
be programmed to ring in to individual stations, mul- 
tiple stations, or hunt groups or as a DISA call. (If 
programmed to ring in at a single station, the E&M 
call will follow any programmed forward.) 
0 Dial-repeating F&M trunks perform a “handshake” 
with the other telephone system and allow the caller 
to dial an extension number or a trunk access code 
for placing an outgoing call. The handshake can be 
immediate-dial, delayed-start, or wink-start, de- 
pending on the E&M trunk installed (defaults to im- mediate-dial). The programmer can also determine 
whether the caller will hear dial tone (defaults to 
“enabled”) and whether reorder tones will be pres- 
ented as a burst of tones or continuous tones (de- 
faults to “burst of tone”). 
Outgoing E&M Calls 
4.76 E&M trunk groups are programmed for day and 
night mode outgoing access like standard trunk groups. 
4.77 E&M trunks can be assigned to LCR facility 
groups to route outgoing calls through the other tele- 
phone system. This is useful when a call that is placed 
from one telephone system would be a local call on the 
other system. The “long distance” call could be placed 
using LCR routed through the E&M trunk group, and 
go out of the other telephone system as a local call. (The 
LCR facility group would have to have dial rules pro- 
grammed to dial the other telephone system’s trunk 
access code as well as sending the dialed telephone 
number.) 
4.78 When the system is in the default configuration, 
all E&M trunks are configured for IYIMFJ signaling. If 
necessary, some or all of the trunks can be repro- 
grammed for dial-pulse signaling through database pro- 
gramming. 
Page 4-34  
						

							INTER-TELPRACTICES IMX/GMX 416/832 INSTALLATION & MAINTENANCE FEATURES 
Issue 1, November 1994 
L TlSPANS 
NOTE: This feature is available only in the Exrended 
plus Tl and E&M software packages. 
4.79 The term “Tl” refers to a specific digital method 
of transmitting voice and data; it is the basic 24-channel 
time-division multiplex, pulse code modulation system 
used in the United States. Since each Tl span actually 
consists of 24 individual circuits (or channels) multi- 
plexed together, it is often less expensive to purchase a 
single Tl trunk than it is to purchase multiple individual 
trMks. 
4.!IO Fractional Tl (FTl), which uses fewer than the 
standard 24 circuits, can be used on the 416/832 System. 
If FL’1 is used, the unused circuits of the TlC must be 
unequipped. Refer to PROGRAhWJN 
G, page 5-173, 
for details. 
4.t31 Although most Tl interfaces will be with the 
public network, it is possible to use a Tl trunk to connect 
two telephone systems together (e.g., two 4161832 Sys- 
tems in the same building or in two buildings and con- 
nected with a repeater). Refer to Figure 4-l on the next 
page for examples of Tl applications. Also refer to 
PROGRAh4MING, page 5-122, for special procedures 
required for each type of installation. 
482 When purchasing a Tl span, there are several 
variables involved, depending on the Tl application re- 
quired. (Refer to SPECIFICKfIONS, page 2-22, for de- 
tails.) The variables include the following: 
Card type: The type of framing scheme used by the 
Tl trunks connected to the card can be D4 Super- 
frame (normally used for voice transmissions) or 
Extended Superframe @SF is usually used for data 
transmissions). 
Zero code suppression scheme: The Tl trunk xero- 
suppression scheme (that limits the number of con- 
secutive xeroes in transmissions) for the trunks on 
the Tl card can be AMI (Bit 7), Bipolar Eight Zero 
Substitution (BW.S), or “None.” 
PCM encoding law: In pulse code modulation 
(PCM) systems, there are two primary methods of 
encoding analog signals (sampled audio wave- forma) into digital signals. In North America and Ja- 
pan, the “mu-law” (u-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 United States, this will almost al- 
ways be mu-law to mu-law. 
Relay activation: If desired, you can enable one or 
both of the two relays on the Tl Card. If enabled, you 
can attach a signaling device (such as a light or 
alarm) and select whether the relay ia activated for a 
“Tl line error” or to indicate “Tl line OK.” 
Channel service unit (CSU) or DSX-1 Interface: 
In some applications, an optional on-board CSU is 
installed on the Tl Card. In other applications, a 
DSX-1 Interface will be used. Figure 4-l on the next 
page shows several possible applications. 
- Line build-out (LBO): Ifthe optional on-board 
CSU is installed, the LB0 attenuation of the Tl 
trunk connected to the card must be designated in 
programming. This value is determined by the 
distance to the nearest public network Tl 
repeater. 
- 
DSX-1 line length: If the optional on-board 
CSU is nor installed, 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 must be desig- 
nated in programming. 
Refennce clock programming: If the Tl Card is 
connected to the public network, the card is auto- 
matically designated as a slave clock (the public net- 
work always acts as the master clock and the first 
slave clock provides the 416/832 system reference 
clock; all other slave clocks act as backups). If the 
card is not connected to the public network, but is 
instead connected to another Tl Card or a card in an- 
other telephone system, it can be a master clock or a 
slave clock (in relation to the card on the other end). 
If the card is a master, the card’s on-board oscillator 
can be the source of the clock or it can rely on an ex- 
ternal clock. 
Page 4-35  
						

							FEATURES INTER-TELPRACTICES 
Issue 1, November 1994 
JMX/GMJL 416/832 INSTALIATION & MAINTENANCE 
FIGURE 4-l. Tl SPAN APPLICATIONS 
416/832-to-CO wltb extend CSU In this application, the TlCa are connected to the central offioe using an extannl CSU. 
A DSX-1 Interface is enabled and the length of the cabling between the 416/832 Sys- 
416/832-to-CO with onboad CSU In this application, the TlCs are connected diiectly to the central office and optional 
on-board CSUs are used. The line buildout is programmed to match the dii to the 
CO (or nearest repeaterb up to 6OfKt feet. Both cards draw reference clock from the 
public network and are stave clocks. One card is designated as the system reference 
ClOCk. 
416/832-to-416/832 DSX-1 with repeater Here, two 4161832 Systems are connected through a Tl repeater. Both TlCs have the 
DSX-1 Interface enabled The length of cabling to the repeater (up to 655 feet) is dcs- 
ignated in programming for each card. One card is designated as the master clock 
(which does not draw reference clock from the public network) and the other is the 
slave clock (that receives reference from the master clock acting as the “public net- 
work”). Both TlCs are programmed as reference clocks for their 416iS32 Systems. 
416/832-b-416/832 DSX-1 without repeater In this example, the two 4161832 Systems are connected directly. Both TlCs have the 
DSX-1 Interface enabled and the length of cabling between the two systems (up to 655 
feet) is designated in programmin g. One card is designated as the master clock (which 
does not receive reference clock born the public network) and the other is the stave 
ciock (that receives reference from the master clock acting as the “public network”). 
Both TlCa are programmed as reference clocks for their 4161832 Systems. 
416/832&-416/832 CSU with ~peater(s) In this application, two 4161832 Systems are connected through a Tl repeater. Both 
TlCs have the on-board CSU enabled and the line buildout is programmed to match 
the distance to the Tl repeater (up to 6000 feet) for each TIC. One 
card is designated 
as the master clock (which does not receive reference clock from the public network) 
and the other is the slave clock (that receives reference boom the master clock acting as 
the “public network”). One card is designated as the master clock and the other as the 
416/832-b-416/832 CSU without repeater In this application, two 416B32 Systems are connected directly to each other. The 
TlCs both have on-board CSUs enabled and the tine buildout is programmed to match 
the distanw between the 4161832 System (up to 600 feet) for each TlC. One card is 
designated as the master clock (which does not receive reference clock &om the public 
network) and the other is the stave clock (that receives reference from the master clock 
acting as the “public network”). One card is designated as the master clock and the 
Sample Tl Network Ilua37. m 
In a Tl network that involves multiple CO and TlC co~ections, the CSUDSX-1 
variable is determined by each connection. In the example shown here, the two TlCk 
connected to the CO receive reference clock from the public network and are stave 
chks. The two that are connecting the 416/832 Systems do not draw reference from 
the public network. TLC K? on 416/832 81 is the master clock and TlC #1 on 4161832 
Page 4-36  
						

							INTER-TELPRACTICES 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
M. DIRECTINWARDDIALING (DID) 
4Jl3 Direct inward dialing (DID) allows an outside 
party to dial into the system without attendant interven- 
tion. To gain direct access to the system, an outside party 
dials a number that was assigned by the telephone com- 
pany to the DID trunks installed on the 416/832 System. 
The system then provides ring signal to the station, sta- 
tions, or hunt group according to the programmed ring- 
in/answer pattern for that DID number. 
4.M Therecanbeupto11DIDtrunkgroupsinastan- 
dard system and up to 16 in an expanded system. Each is 
assigned the following parameters: 
0 
0 
Tenant group designation: A DID trunk group 
must be assigned to a specific tenant group. 
Music-on-hold selection: The DID trunks can use 
music channel 1 or 2, or they can use tick-tones or 
silence. 
Start 
type: The “start type” of the DID groups can 
be immediate, wink, or delay, depending on the type 
of DID trunks ordered from the telephone company. 
DISA codes: Individual DID trunk groups can be 
designated for DISA use; however, the security 
codes are the same for all DID trunks in the group. 
‘Dvnk list: Each DID trunk must be assigned to a 
DID group. 
Base number: The base number is the 3- to 6digit 
number that is not dialed into the system by the cen- 
tral office. For example, in the number %l-9CKKl, if 
the base number was 9619, the central office would 
send only 000 into the system. The system then 
sends the call to the ring-in designation associated 
with %l-90. There can be a total of 600 DID en- 
tries in a standard system (800 in an expanded sys- 
tem). The entries can be divided as desired among 
the direct inward dialing (DID) groups. There is no 
limit to the number of entries per group as long as the 
system-wide maximum is not exceeded. 
4.85 Each DID number is individually programmed 
with ring-in designations for day and night modes. The 
calls can ring in to a single station, a ring/answer pattern, 
a hunt group, or as DISA calls. If the number is not as- 
signed one of these designations, it will always ring at 
the primary attendant’s station. 
N. LOOP AND GROUND START TRUNKS 
4.86 The 416/832 
System can use both loop and 
ground start trunks. In database programming, the 
trunks are designated as loop or ground start on a trunk- 
by-trunk basis. 
4.87 In unsupervised trunk-to-trunk calls (such as un- 
supervised conferences and forward to an outside num- 
ber) if either outside party is using a loop start trunk, the 
Unsupervised CO timer is activated. When this timer 
expires, both parties receive a burst of dial tone. Either 
party can reset the timer by pressing any DI’MF key be- 
fore the Single-Line Dial Initiation timer expires. If the 
timer is not reset, the call recalls the primary attendant 
who can determine whether the trunks are still in use or 
if the call should be disconnected. If the trunk connec- 
tions are ground start or DID trunks, this timer is not 
needed as they supply reliable disunmection signals. 
4.88 The Hookflash feature (feature code 330) can be 
enabled or disabled for loop and/or ground start trunks 
on a trunk group-by-trunk group basis. 
0. TRUNK 
MAINTENANCE 
4.89 Attendants can place individual trunks out of ser- 
vice by entering a feature code. This unequips the trunk, 
but does not block incoming calls on the trunk. To out- 
side callers, the trunk will appear to be functioning and 
they will hear ringing. However, station users will not 
hear ringing or see a flashing trunk key and cannot ac- 
cess the trunk for receiving or placing calls until the 
attendant places the trunk back into service by entering 
another feature code (or the trunk is returned to service 
through the database). The advantage of using this fea- 
ture instead of unequipping the trunk in the database, is 
that all progr amming for the trunk is preserved. The 
trunk returns to complete functionality as soon as it is re- 
turned to service with no additional programming re- 
quired. Instructions for placing a trunk out of service are 
located on page 4-113. This feature applies to all trunks, 
including DID trunks. 
4.90 EachTlC is equipped with a “make busy” switch 
for removing all circuits on the card from service and 
placing them back in again, and do not require use of this 
feature. Pressing the switch will light its 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 hangs up. 
NOTE: If the trunk that is being placed out of service is 
part of a telco rotary hunt, the central office will detect 
that trunk as being available and will not bypass it for 
incoming calls. 
Page 4-37  
						

							INTER-TELPRACTICES 
IMX/GMX 416/X32 INSTALLATION & MAINTENANCE 
P. DIRECT INWARD SYSTEM ACCESS 
@ISA) 
4.91 DISA is a programmable feature that allows an 
outside party to dial into the system from an external 
IYIMF telephone and then access the following system 
resources: extension numbers for placing calls to sta- 
tions; trunks groups or auto trunks for placing outgoing 
calls; hunt group pilot numbers; and, if equipped, a mo- 
dem extension number for remote system programming 
or report generation. 
4.92 Toll restriction is not checked on DISA calls 
when an outgoing trunk is accessed. DISA users camtot 
access LCR, specific individual trunks (unless they are 
the only trunk in a trunk group), or paging. 
4.93 Any of the trunk groups can be programmed to 
receive incoming DISA calls in day and/or night mode. 
When not in use for DISA, the trunk can be used by sys- 
tem users for placing outgoing calls (unless designated 
as an “inwming-only” trunk). 
NOTE: Due to the natural characteristics of the trunk, 
the volume level of DTh4P tones transmitted over the 
trunk may be substantially reduced before reaching the 
416/832 System. This natural degradation in tone 
volume may adversely affect the reliability of the DISA 
feature. Other factors which can affect DISA perfor- 
mance are trunk noise and the quality and strength of the 
M’MF tones generated by the off-premises phone itself. 
4.94 When a DISAuser calls a station extension num- 
ber, the call rings as a direct ring-in call, even if the 
called station is busy or in do-not-disturb. The DISA 
caller hears music (if enabled) until the appropriate 
Transfer timer expires; then if the call is not answered it 
recalls the called station’s attendant. If the called station 
is forwarded, the call follows the programmed forward. 
4.95 When a DISA caller is using or accesses a loop 
start trunk, the Unsupervised CO timer is activated. 
When the timer expires, both parties hear a burst of dial 
tone. Either party may reset the timer by pressing any 
IYIMP key. If the timer is not reset, the call recalls the 
attendant. If the attendant does not answer the recall be- 
fore the Recall and Abandoned Call timers expire, the 
call is disconnected. (This is not applicable to ground 
start trunks.) 
NOTE: There may be some reduction in voice volume 
when a DISA caller accesses an outside trunk. 
4.96 When a hunt group pilot number receives a call 
through DISA, the call rings or circulates according to 
how the hunt group is programmed (i.e., linear, distrib- 
uted, or all ring). The call is displayed as a direct ring-in 
call; however, the system actually processes the call as a 
transferred call. Refer to page 4-16 for more informa- 
tion on hunt group calls. DISA Calls In SMDA Reports 
4.97 DISA call information is included in the System 
Summary SMDA report. See page 4-115. 
Blocked DISA Calls in SMDR Reports 
4.98 Whenever an outgoing DISA call is denied, 
either by toll restriction or weekly toll limits, the SMDR 
repot-twill shows a call record for the DISAcall and then 
another line with the abbreviation “BLK” (for 
“blocked”). See page 4-123 for details. 
I- -’ _ 
 
-I 
i 
DISA Do-Not-Disturb Breakthrough 
4.99 Under normal circumstances, direct ring-in calls 
are not blocked by do-not-disturb. However, the data- 
base contains an option that allows or disallows do-not- 
disturb breakthrough for DISA (and automated 
attendant and voice mail/computer) calls on a station- m 
by-station basis. If do-notdisturb breakthrough is dis- 
allowed, DISA calls to a station in do-not-disturb are 
immediately sent to the station’s attendant. If the atten- 
dant does not answer the call, it is disconnected after the 
Abandoned Call timer expires. 
Security Codes 
4.100 DISAtrunks can be assigned security codes that 
must be entered before the caller has access to the 
system and/or the CO trunks. In the Extended software 
package, codes can be 4-7 digits long (using any 
combination of digits O-9, *, and #). All other software 
packages use 4digit security codes. The installer can 
program separate codes for each DISAtrunk group to be 
used during day and/or night modes. 
4.101 In the Etiended software package, a DISA 
caller will have three opportunities to enter a valid 
security code. If the caller fails three times, the failure 
will generate a system alarm on alarm stations and in 
SMDR that says “DISA SECURlTY LIMlT EXCEED- 
ED” and the system will not answer that DISA trunk 
again for five minutes. (Any other DISA trunks will be 
unaffected.) 
DISA Toll Restriction 
4.102 In the Extended software packages, DISA 
trunks can be given day and/or night mode toll 
restrictions like those described on page 4-27 for 
individual stations (except LCR-Only). When a DISA 
caller dials an outgoing call, the call is checked against 
the DISA trunk’s toll restriction. If the call is disal- 
lowed, the DISA caller is sent to the primary attendant. 
4.103 If the Weekly Toll Limit feature is enabled, 
calls through DISA will be subject to monitoring as 
described on page 4-30. 
NOTE: While DISA is designed to be reasonably 
secure against misuse by outside callers, there is no im- 
Page 4-38  
						

							INTER-TEJJPRACTICES 
IMX/GMX 416/832 INSTALLATION % MAINTENANCE ImmuREs 
Issue 1, November 1994 
plied warranty that it is invulnerable to unauthorized in- 
trusions. The installer and owner of the system should 
ensure that proper security measures have been taken to 
prevent outside callers from accessing and misusing 
outgoing trunks for unauthorized calls. Also, if the cen- 
tral office does not provide supervision and disconnect 
the call when one party hangs up, it is possible for a 
caller to remain connected to a CO trunk circuit. If this 
happens, and the caller begins dialing, the call could be 
placed through the 416/832 System and would then be 
billed to the system’s owner. The system cannot check 
this type of call for toll restriction and may not register 
the call in SMDR. This problem could arise when a call 
is connected to a station, when a call is forwarded or 
transferred to the public network, or when DISA is used 
for placing outgoing calls. 
Using DISA 
NOTE: DISA calls are not answered unless the neces- 
sary resources (a IYThJF decoder and a voice channel) 
arc available. If you hear a busy signal followed by mu- 
sic, the trunk you tried to access is busy. You have 
camped on and will be connected to the desired trunk as 
soon as it is available. If you call an extension number, 
you will hear music (if enabled) until the appropriate 
Transfer timer expires; then if your call is not answered 
it recalls the called station’s attendant. 
4.104 
To USE DIS4 IFA SECURIlYCODE IS NOTREQUIRED: 
(1) From a IYIMF telephone, dial the telephone 
number of the DISA trunk. 
(2) When the call is answered by the system and you 
hear system dial tone, do one of the following: 
a. For placing an ourside call: Dial a trunk 
access feature code. You then hear outside 
dial tone and can place your call. 
b. For remote system programming: Dial the 
extension number assigned to the modem 
(defaults to 2600). Refer to PROGRAM- 
MING, page 5-4, for complete remote pro- 
gramming instructions. 
c. Forplacing an intercom call: Dial an exten- 
sion number or a hunt group pilot number (if 
calling the attendant, dial the extension num- 
ber, not 0). You hear music until the call is an- 
swered. 
4.105 
lOUSEDISAIFASECURIlYCODEISREQUIREDFOR 
INTERCOM, MODEM, AND TRUNK ACCESS: 
(1) From a M’MF telephone, dial the number of the 
DISA trunk. 
(2) When the call is answered by the system and you 
hear a single Progress tone, enter the appropriate 
(day or night) DISA security code. (3) When you hear dial tone, do one of the follow- 
ing: 
a. For placing an outside call: Dial a trunk 
access feature code. You hear outside dial 
tone; place your call. 
b. For nzmote system programming: Dial the 
extension number assigned to the modem. 
Refer to PRClGRAMMlN G, page 5-4, for 
complete remote programming instructions. 
c. Forplacing an intercom call: Dial an exten- 
sion number or hunt group pilot number. (If 
calling the attendant, dial the extension num- 
ber, not 0.) You hear music until the call is an- 
swered. 
4.106 lt3USEDI.%4IFASECURllYCODEISREQU.FOR 
TRUNKAh’D MODEMACCESS Om: 
(1) From a IYIMF telephone, dial the telephone 
number of the DISA trunk. 
(2) When the system answers the call and you hear 
dial tone, do one of the following: 
a. 
b. 
C. 
For placing an outside call: Dial a trunk 
access code. When you hear a single progress 
tone, enter the appropriate (day or night) 
DISA security code. You hear outside dial 
tone when the system recognizes the security 
code and if a trunk is available. 
For remote system programming: Dial the 
extension number assigned to the modem. 
When you hear a single progress tone, enter 
the appropriate (day or night) DISA security 
code. You hear outside dial tone when the 
system recognizes the security code. Refer to 
PROGRAMMING, page 5-4, for program- 
ming instructions. 
Forplacing an intercom call: Dial an exten- 
sion number or hunt group pilot number. (If 
calling the attendant, dial the extension num- 
ber, not 0.) You hear music until the call is an- 
swered. 
NOTE: If you enter an invalid security code, the trunk is 
dropped. If you enter an invalid feature code or exten- 
sion number, or dial an invalid number, you hear reorder 
tones and then system dial tone. You may try again. If 
you dial a valid hunt group pilot number that has no 
members assigned to it, the call automatically rings at 
the Primary attendant station until the appropriate 
Transfer and Abandoned Call timers expire (this occurs 
in both day and night modes). If the attendant does not 
answer before the Abandoned Call timer exPires, the 
call is disconnected. 
Page 4-39  
						

							I 
I 
INTER-TELPRACTICES 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
5. STATION INSTRUMENTS 
5.1 To allow system flexibility and cost efficiency, a 
variety of station instruments can be used on the 
416l832 System. They are: 
IMX 416/832 Digital And Analog Station 
Instruments 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 Standard Digital Keysets - standard and display 
Executive Digital Keysets - display only 
lMX 12/24-Line Keysets -display and standard 
IMX 8-Line Keysets -non-display only 
IMX 8/12/24-Line AIM keysets - display only 
Enhanced Single-Line Sets (ESLSs) 
Single-Line Instruments (SLIs) 
Digital DSS/BLPUnits -single or in string of up to 
four Units (attached to a digital keyset) 
IMX DSS/BLF Units (on separate circuits from 
associated keysets) 
Attendant Computer Consoles 
Industry-standard, single-line, dual-tone multi&e- 
quency (DTMF) sets 
NOTE: With the proper software package, the Inter-Tel 
GX station instruments can also be installed on the sys- 
tem. Refer to Appendix A in the back of the manual for 
complete information. 
GMX416/832 Analog Station Instruments 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 Inter-Tel/DVK 24Line Keyset -standard and dis- 
play 
Inter-TeVDVK 12-Line Keyset -standard and dis- 
play 
Inter-Tel/DVK 8-Line Keyset - standard and dis- 
play 
GMX 24-Line Keyset - standard and display 
GMX 12-Line Keyset -non-display only 
GX 24-Line 
Keyset -standard and display 
Attendant Computer Console 
Inter-Tel/DVK DSS/BLF Unit - single or tandem 
GMX DSS/BLF Unit - single only 
GX DSS/BLF Unit - single or tandem 
GhIX/GX Single-Line Instrument (SLI) 
Industry-standard single-line, dual-tone multi-fre- 
quency (MMF) set 
NOTE: For more information on the GX and GMX sta- 
tion instruments, refer to appendixes Aand B in the back 
of this manual. 5.2 The Inter-Tel AIM 
keysets, digital keysets, and 
DVK keysets contain audio-integrated modules that al- 
lows the user to adjust volume levels independently for 
pages, calls, ring tones, etc. 
5.3 Keyset Cards (KSCs and KSC-Ds) and Digital 
Keyset Cards (DKSCs) are used to support keyset sta- 
tions. Single-Line Cards (SLCs) are used to support 
single-line stations. Inward Dialing Cards (RX%) can be 
installed to support AC-ringing off-premises’single-line 
stations, on-premises single-line sets, DC-ringing 
single-line devices for special applications, or DID 
trunks. 
5.4 The IMX 8-line dual-circuit AIM keysets can be 
installed rwo to a circuit, if desired. To do this, single 
KSC-D circuits are designated as “dual” circuits in Sys- 
tem Configuration programming. (Other keyset models 
cannot be installed two to a circuit.)The designated dual 
circuit actually becomes two circuits that can be pro- 
grammed individually (XXA and XXB, where X.X is 
the circuit number). 
5.5 System software will support any configuration of 
station instruments with the limitation that there must be 
a minimum of one Keyset Card. The actual contigura- 
tion is defined by the type of cards and the number of cir- 
cuits in use on the system. 
A. KEYSETS 
5.6 Keyset design features are described in the follow- 
ing paragraphs. 
Hands&e Speakerphone 
5.7 All keyset stations allow the user to dial while on 
hook. In addition, the keyset speaker may provide back- 
ground music (if an external music source is installed) 
and is used to receive pages. 
5.8 IMX Keysets and Inter-TeUDVK Keysets have a 
built-in, integrated speakerphone that allows handsfree 
operation on outside calls and inside (intercom) calls. 
5.9 Digital Keysets have a built-in speaker and 
microphone that allow the user to answer intercom calls 
handsfree, dial while on hook, monitor calls, and listen 
to background music. Speakerphone resources are pro- 
vided by Digital Signal Processors (DSPs) on the Digital 
Keysets Card (DKSC). A DKSC can have up to two 
DSPs. Each DSP supports up to 12 speakerphones 
simultaneously. Each time a digital keyset user presses 
the SPKR key while on hook, the speakerphone function 
is activated and the speakerphone resource is assigned 
to that phone for the length of the call. If more than 12 
speakerphones are enabled on a DKSC with one DSP 
and a thirteenth digital keyset user requests the speaker- 
phone function, the user will hear reorder tones and the 
Page 4-40  
						

							INTKR-TELPRACTICES 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE ImwuREs 
Issue 1, November 1994 
I 
display will show NO SPKRPHN AVAIL STAY OFF 
HOOK. If the user attempts to change to the speaker- 
phone and hangs up during a call when speakerphones 
are unavailable, the user will be forced into a monitor- 
only mode. The user will be able to hear the other party 
but will not be allowed to transmit to them. In this mode, 
the user’s MUTE key will be lit and the display shows 
NO SPKRPHN AVAIL COME OFF HOOK. Pressing 
the lit MUTE key will result in -a burst of reorder tone; 
you must lift the handset to speak. 
5.10 A programming option can be enabled that dis- 
ables the speakerphone (as described on page 4-55) or 
the user can disable the speakerphone using a feature 
code. This prevents the station from using the speaker- 
phone on outgoing intercom calls and all outside calls. If 
the option is enabled, the speakerphone can still be used 
for receiving handsfree intercom calls, but the user must 
lift the handset to speak when placing intercom calls and 
when placing or receiving outside calls. The MUTE key 
is lit when the speaker is activated for outside calls or 
outgoing intercom calls. Call monitoring and on-hook 
dialing are not affected. 
NOTE: On certain handsfree-to-handsfree intercom 
calls, voice volume levels may cause feedback to occur. 
If this happens, one user should pick up the handset. 
Liquid Crystal Display (LCD) 
5.11 
Several keyset types are available in standard or 
display models. The difference is that there is a liquid 
crystal display (LCD) on the display keyset. Standard 
keysets can be converted to display keysets by installing 
LCD Units (refer to REPLACEMENT PARTS for unit 
part numbers). Installation instructions are in the 
INSMLLATION section of the manual. 
5.12 The LCD has two 16character display lines. 
When the keyset is not in use, the LCD shows the date 
and the time of day (and, if enabled, the station exten- 
sion number and user name). Other displays include: re- 
minder messages, do-not-disturb messages, numbers 
dialed, call sources, elapsed time of calls, current call 
costs, error messages, station status, programming mes- 
sages, etc. The displayed information is described 
throughout the instructions in this section of the manual. 
I 5.13 Executive Digital Keysets have four additional 
display lines with keys on both sides (eight keys) that are 
used for selecting features from the menu display 
instead of pressing feature keys or entering feature 
codes. Pressing the key on either side of a display line 
selects the option shown on that line. The following 
menu options are available on the Executive Digital 
Keyset display: 0 ADMINFEATURES: (Thisappearsonlyifthesta- 
Zion is prvgmmmed as an attendant.) This option 
displays a menu of attendant features. 
l IC DIRECTORY: This allows quick access to the 
intercom directory. 
l CO DIRECTORYz This option provides quick ac- 
cess to the CO (system speed-dial) directory. 
0 OTHER FEATURES: This displays a list of fea- 
tures in alphabetical order. 
5.14 Under the display are six “display-oriented” fea- 
ture keys. PREVIOUS and NEXT are used for scrolling 
through screens. The BACKSPC, FORWARD, 
CLEAR, and CANCEL keys do not have a function on 
the IM2C 416/832 System. 
Keyset Identification Displayed 
5.15 
If this option is enabled in the database (refer to 
PROGRAMMING, page 5-68), the extension number 
and assigned user name appear on the top line of the key- 
set display, and the time and date appear on the bottom 
line when the keyset is idle. Ifthe option is not enabled, 
the display shows date and time only, unless the user 
presses the SPCL key and enters the Display Date And 
Time feature code (300) to read the full display. 
Date, Time, User Name, And Extension Number 
Display 
5.16 
When a display keyset is idle, the date and time 
(and, if enabled, user name and extension number) are 
displayed. While on an outside call, in do-not-disturb, or 
unconditionally forwarded, other displays are shown. In 
these circumstances, use the following procedure to re- 
display the date, time, name, and extension number for 
five seconds. 
5.17 ToDISPUYlHEDATE,lIME,USERNAME,ANDEXTEN- 
SIONNUMBER: 
Press the SPCL key and enter the Display Date 
And Time feature code (300). The date, time, 
user name, and extension number are displayed 
for five seconds. 
Circuit Number On Power-Up 
5.18 
To aid in installation and troubleshooting proce- 
dures, display keysets show their station identification 
for five seconds when power is turned on, when the sys- 
tem is reset, or when the keyset line cord is first plugged 
in (or removed and replaced). The extension number 
and assigned user name appear on the top line of the dis- 
play, and the circuit number appears on the bottom line. 
After the five-second identification display, the keyset 
Page 4-41