Inter-Tel Imx/Gmx 256 Installation And Field Maintenance Manual

							PROGRAMMINGIssue 1, November 1994INTER-TELPRACTICESIMX/GMX 256 INSTALLATION & MAINTRNANCEC. 
TlPROGRAMMING
13.56The Tl Programming window allows you to
program information that applies to all Tl trunks as wellas to specific 
Tl Cards. The information that is pro-
grammed common to all Tl Cam3 includes:
0Error thresholds: The programmer csn set numeri-cal thresholds (number per hour and number per
day) forT1 Card errors. If a threshold is exceeded, an
error is printed on the 
SMDRreport. (These are set to
default values that, in most cases, will not need to 
be
changed.) Possible 
Tl errors include the following:
-BPV (Bipolar Violations): This is a non-zero sig-
nal element that has the same polarity as the pre-
viously received non-zero element.
- Controlled Slips: The 256 System replicated ordeleted one 
192-bit digital signal (DSl) frame
due to a lack of frequency synchronization.
- CRC-6 (Cyclic Redundancy Check): The cal-
culation carried out on a set of transmitted bits by
the transmitter does not match the calculation
performed by the 256 System.
- ES (Errored Seconds): These are seconds in
which at least one error occurred.
- OOF/COFA (Out of Frame/Change of Frame
Adjustment): OOF is a state in which the frame
alignment that is received is not consistent with
that which is transmitted. 
COFAoccurs when the256 System realigns its receiver to the proper
frame alignment signal.
- SES (Severely Errored Seconds): This is a
second during which transmission performance
is degraded below an acceptable level.
-TODV (Transmit Ones Density Violations): If
there are too few ones in a transmission (low den-
sity of pulses representing ones), the excessively
long string of 
zeros causes a pulse density error.
This condition is monitored only when the 
on-
board CSU is enabled.
-UAS (Unavailable Seconds): This is the time in-terval during which the 
Tl span is unavailable
for service. This time begins with 10 or more
consecutive Severely Errored Seconds and ends
with 10 or more Non-Severely 
Errored Seconds.l
Dialing feedbackconfiguration: When a number is
dialed over a 
Tl circuit, the user hears the feedback
from the signals (either DTMF or dial-pulse). By ad-
justing the 
M’MF gain control or the dial-pulse gain
control, you can determine how loud the signals ap
0
pear to the user. If the circuit is designated for dial-pulse signaling, you can also select the type of
dial-pulse tone the user hears (23 different tones areavailable).
Reference clock back-up priorities: One 
Tl Card
in the system must be programmed as the systemref-
erence clock. 
lf more than one Tl Card is installed in
the system, 
the,programmer may designate one or
more of the cards as a “back up” to the system refer-
ence 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.
If no backups are assigned or all Tl cards fail, the
RCPU Card clock acts as the backup.
13.57The information that is programmed 
specijk to
each Tl 
Cani installed in the system includes the fol-lowing. This information is determined by the equip
ment being used. Refer to the chart on the next page forprogramming requirements and refer to 
JNSTALLA-
TION for special cabling requirements.
Card type: The type of framing scheme used by the
Tl trunks connected to the card can be D4 Super-
frame or Extended 
Superframe @SF).
Zero code suppression scheme: The Tl trunk xero-
suppression scheme for the trunks on the 
Tl card canbe 
AMI (Bit 7), Bipolar Eight Zero Substitution
@=a,or “none.”PCM 
encoding law: In pulse code modulation
(PCM) systems, there are two primary methods ofencoding analog signals (sampled audio wave-
forms) into digital signals. In North America and Ja-
pan, the “mu-law” (p-law) method is normally used.
In other places, such as Europe, the “A-law” method
is widely used. The programmer must select both the
transmit and receive method of encoding used by the
TlC. In the United States, this will almost always 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, youcan attach a signaling device (such as a light or
alarm) and select whether the relay is in “set” mode
for a 
“Tl line error” (red alarm) or to indicate “Tlline OK.”
Channel service unit 
(CSU) or DSX-1 Interface:
Designate whether the optional on-board CSU is in-
stalled on the 
Tl Card or if a DSX-1 Interface will be
used. Also verify that the 
DSX/CSU jumper on the
Tl Card is set in the proper position (tomatchda-
tabase programming.) Then program one of the fol-
lowing:
Page 5-122 
						

							INTER-TELPRACTICRSIMX/GMX 256 INSTALLATION & MAINTENANCEPROGRAMMINGIssue 1, November 1994
- Line build-out (LBO): If the optional on-board
CSU is installed, designate the LB0 attenuation
of the 
Tl trunk connected to the card. This value
is determined by the distance to the nearest pub-
lic network 
Tl repeater.
- DSX-1 line length: If the optional on-board
CSU is not installed, designate the length of thecabling between the 
Tl Card and the external
CSU, or between the Tl Card and the other tele-
phone system.
NOTE: The programming prompts for 
LB0 attenu-
ation and DSX-1 line length assume that proper 
Tl
cable is being used. When transmitting over shorter
distances (e.g., when the nearest public network 
Tl
repeater is less than 2000 feet from the MDF), it may
be possible to use standard two-pair voice frequency
cable instead; however, you may have to compen-
sate 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 separate cables or binder
groups).l Reference clock programming: First determine
whether the Tl Card is connected to the public net-work. If it is, the card is automatically designated as
a slave clock (the public network always acts as the
master clock and the first slave clock provides the
system reference clock, all other slave clocks act as
backups). If the card is not connected to the public
network, but is connected to another 
Tl Card or a
card in another telephone system, determine wheth-
er the card is a master clock or a slave clock (in rela-
tion to the card on the other end).
0Error diagnostics: If desired, you can generate a re-
port that shows the current 
Tl error counts (by hour
and by day) for the selected card. The error 
connts
can be displayed in a graph or a table.
13.58There are 
Tl services available that function
like a DID trunk for incoming calls and an E&M trunk
for outgoing calls. For an outgoing call, the trunk direct-ly accesses another PBX and allows the usual E&M
calls to be placed. For incoming DID-type calls, the Tl
tnmk receives the incoming call and then waits for 2-4
additional digits to be dialed. These digits must corre-
spond to the digits in a 
DID table so that the 256 System
will know where to send the call. (The DID digit transla-
tion tables are programmed in the DID Croup window
shown on page 
5-115.)
Page 5-123 
						

							PROGRAMMINGIssue 1, November 1994INTER-TELPRACTICESIMX/GMX 256 INSX4LLATION & MAINTENANCE
FIGURE 5-1.Tl APPLICATIONS AND PROGRAMMING-‘>4
NOTE: For all installations, the card type and z&o code are programmed to match the Tl span being installed. The
PCM encoding law is determined by the location in which the 
Tl span is installed, in the United States it will usually be
“p-law to p-law.” For the line build-out or line length option, select the number closest to the actual installation dis-
tance. If a 
TlC is a Master, the source of the reference clock will always be “on-board oscillator.” (“External clock” is
reserved for future use.) Refer to page 2-17 in SPECIFICATIONS for more information.
Master 256 System
Slave 256 SystemDSX-1
DSX-1No
YesYes
YesMaster
Slave
Page 5-124 
						

							INTRR-mPRAcTIcEsPROGRAMMINGAWGMX 256 INSTAUATION & MAINTENANCEIssue 1, November 1994
FIGURE 5-1.Tl APPLICATIONS AND PROGRAMMING (Continued)
25640-256 cm with qeater(s)
CBU or DSX-1FROM PUBUC
NETWORK?356 SW%. REF.MASTER or
CLOCK?SLAVE
Master 256 System
Slave 256 System
25640-256 csu without qeaterNo
YeS
YeS
YeS
Master
Slave
Master 256 System
Slave 256 System
Sample 
Tl Network
256m
TlC#l _ ml
256w2
TICm - TlC#l
CSU
CSUNo
YeS
YeS
YeS
Master
Slave
TlC#Z --co2
256 System #l - TlC #l
256 System #l - TlC #K2
256 System #2 - TlC #l
256 System #2 - TlC #2Depends on in- Yes
stallationDepends on in- No
stallationDepends on in- No
stallationDepends on in- Yes
stallation
YesNo
No
YeS
Slave
Master
Slave
Slave
Page 5-125 
						

							PROGRAMMINGIssue 1, November 1994
INTER-TRLPRACTxcES
lMX/GMX 256 INSTALLATION & MAINTENANCE
Threshold Name
meshold Programming
Number/HourNumber/Day
Controlled Slips
CRC-6 (Cyclic Redundancy Check)
ES 
(Errored Seconds)
OOF/COFA (Out-of-Frame)
SES (Severely 
Errored Seconds)
TODV (Transmit One’s Density Violations)
UAS (Unavailable Seconds)2
4
53,184132,960
259
648
717
40100
24
1010
.Dialing Feedback ConfigurationTl Qrd Programming
DTMF Feedback Gaincl0 dB
Dial-Pulse Feedback Gain
I-4 dB
Dial-Pulse Tone Selection
13.59To reach this window, select Tl Programming
from the Trunk Programming menu or enter the 
Tl com-
mand. The program planning sheet for this window is in
Figure 5-26 on page 5-227.
13.60 THRESHOLD PROGRAMMING:Tl speci-
fications include several error thresholds. These can be
adjusted for hourly and daily thresholds. To change a
value, select the desired threshold. the following win-
dow appears:
Number per Hour
Number per 
IJay
0NUMBER PER HOUR: In this text box, enter the
appropriate number of errors allowed per hour.l NUMBER PER DAY: In this text box, enter the
number of allowed errors per day.13.61 DIALING FEEDBACK 
CONF‘IGURA-
TION: This value determines the volumes of the of
lYl’MF tones, pulse-dial signals, and dial tone that are
heard by the user (as feedback) when dialing. To set a
value, select the appropriate text box and enter the de-
sired value.l
DTMF’ FEEDBACK GAIN: This is the volume of 1the 
M’MF dial tones the user hears through the
handset or speaker when dialing (using a IYIMF Tl
trunk). The allowed range is -1SdB to 15dB. Defaultis 
-4dB.
0DIAL PULSE FEEDBACK GAB% This is the vol-ume of the pulse-dial signals that the user hears
when dialing (when using a pulsedial 
Tl trunk).
The allowed range is-15dB to 
15dB. Default is
-4dB.
l DIAL PULSE TONE SELECTION: This is thetone that will be used for the simulated pulse dial
tone. Select a channel number (l-23). Default is
tone number 7.
Page 5-126 
						

							INTKK-TKLPKACTICKSIMX/GMX 256 INSTALLATION & MAINTKNANCEPROGRAMMINGIssue 1, November 1994
includeSource of BackupExclude
Source of Backup
I(ek)pi=-)
13.62BACKUP: This command button allows you to
program backups for the system reference clock. When
selected, the window shown above appears.l INCLUDE or EXCLUDE: The include list can
contain all Tl Cards with designated “slave” clocks,the “master” 
Tl Card, and the RCPU Card. The
cards appear in the list according to backup priority,
from highest priority (at the top of the list) to lowest
priority. “Master” 
Tl Cards share the same priority
and always appear just above the RCPU Card (which
is at the bottom of the list). To change the priority of
a 
“slave”TlC, locate that card on the Include list andpress SPACE BAR, it moves to the Exclude list.
Then scroll to the desired new location for the card in
the Include list and move the 
.highlight to the Ex-
clude list. Select the card again to move it back to the
Include list in the new location. To completely re-
move a card from the list, select it in the Include list
to automatically move it to the Exclude list.
0OK or CANCEL: When Backup programming is
completed, select the OK command button. To exit
without saving any changes, select the Cancel com-
mand button.
Page 5-127 
						

							PROGRAMMINGIssue 1, November 1994
INTRR-TEZPRACTICRS
IREUGMX 256INSTALLATION & MAINTRNANCEIO
l D4SuperframeIO
Extended SuperFrame (ESF’)
Zero code Suppression scheme
AMI (Bit 7) @ B~ZS0 None
1
ECM Encoding Law
y. . .. . . . . . . . . ;;$y . . . . . . . . . . . . I . . . .. :..~~~~~~:~~~~~~~~~~~~~~~~ 4. . . . . . . . . . . . . .
Transmit mu-Law to mu-law
Belay Activation
02Relay Not Enabled
+
I
I DSX-1 Line Length
0 @O-133 Feet 0 266-399Feet0133-266 Feet 0 399-533
Feet0 533-655 Feet
([ Error Diag ]&ck&& )
Test Prog
13.63Tl CARD PROGRAMMINGThe list box on
page 5-126 shows all 
Tl Cards that are configured in the
system. To program a 
Tl Card, highlight and select it.
The window shown above appears:
0CARD TYPE Select the type of framing scheme,
D4 Superframe or Extended Superframe @SF), used
by the 
Tl trunk connected to each card.lZERO CODE SUPPRESSION SCHEME Select
the type zero suppression scheme - AMl (Bit 7),
Bipolar Eight Zero Substitution 
(BSZS), or None -
used by the Tl trunk connected to each card.l CHANNEL 
SERVICE UNIT (CSU): Designate
whether the optional on-board CSU is installed on
the 
Tl Card or the DSX-1 interface is used. Depend-
ing on which is selected, also program one of the 
fol-
1OWillg.
- LINE BUILD-OUT (LBO): lfthe optional on-
board CSU is installed, designate the 
LB0 atten-
uation of the 
Tl trunk connected to the card. This
value is determined by the distance to the nearest
public network 
Tl repeater and the type of cable
used. The 
LB0 options are:
OdB (3OOCh feet)
7SdB (1600-3ooO feet)
15dB (Cl-1600 feet)
- DSX-1 LINE LENGTH: If the optional on-
board CSU is 
not installed and DSX-1 is used,
designate the length of the cabling between the
Tl Card and the external CSU, or between the Tl
Card and the other telephone system (within the
same building) to which it is connected. The line
length options are:
O-133 feet
133-266 feet266-399 feet
399433 feet
533-655 feet
NOTE: The programming prompts for LB0 attenu-
ation 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 nearest public network Tl repeater is less
than 
2000 feet from the MDF), it may be possible to
rise standard two-pair voice frequency cable instead,
however, the programmer may have to compensateby 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 fromeach other (or run in separate cables or binder
tPP4.
Page 5-128 
						

							INTER-TELPRACTICESIMX/GMX 256 INSTALLATION & MAINTENANCEPROGRAMMINGIssue 1, November 1994l
TEST PROG: This option is not available‘ in stand-
alone sessions. This 
option is used for sending a test
tone over a selected 
Tl circuit. When the Test Prog
command button is selected, the following window
appears. Scroll the highlight bar to the desired cir-
cuit in the list box and then select the Enable Tone
command button. To stop the tone, select the Disable
Tone command button. When finished, select the
OK command button to return to the Tl Interface
window.l 
RELAY ACTIVATION: (Shown in Tl Interface
windowonpage5-128.)Ifde.sired,youcanenableei-
ther or both of the two TlC relays. Select the desired
relay in the list box to 
acxxss the following window.Then choose the proper activation status for the
relay by placing a dot in the desired option button
and selecting the Ok command button. Or, to leavethe relay unchanged, select the Cancel command
button.
- 1-kHz, OdBmO Test Tone (Digital Milliwatt) -
- Tl Line Error: If this is enabled, the relay is in
“set” mode when a 
Tl red alarm occurs. It is in
“reset” mode when there is no alarm.
- Tl Line OR: If this is enabled, the relay is in
“set” mode when there is no alarm. It is in “reset”
mode if a red alarm occurs.
NOTE: Ensure that the 
signalling device is installedon the relay and that the relay is programmed to
achieve the desired “set” and “reset” operations. Re-
fer to 
INSTALLATION, page 3-33, for TlC alarm
relay jack 
pinout.l
OK or CANCELzWhen the Tl interface program-
ming is completed, select the OK command button.
Or, to leave the slot unchanged, select the Cancel
command button.l
PCM ENCODING LAW: (Shown in Tl Interface
window on page 5-128.) Select both the transmit and
receive method of encoding used by the 
Tl Card. InNorth America and Japan, the “mu-law” (n-law)
method is normally used. In other places such as Eu-rope, the “A-law” method is widely used. In the
United States, this will almost always be mu-law to
mu-law. To change the receive or transmit encoding
law, highlight and select Receive or Transmit in the
list box. The following window appears. Place the
dot in the desired option button and then select the
OK command button. Or, to leave the encoding law
unchanged, select the Cancel command button.
- ECM Encoding Law
0
l mu-Law to mu-Law0A-Law to mu-Law0
mu-Law to A-Law0A-Law to A-Law
- Relay Activation
0
l Relay Not Enabled0Relay Enabled 
- Tl Line Error
0Relay Enabled 
- Tl Line Ok
l
OK or CANCEL: (Shown in Tl Interface window
onpage5-12&)WhenT1Cardprogrammingiscom-
pleted, select the OK command button. To exit with-
out saving any changes, select the Cancel command
button.
13.64EMT: (Shown in the Tl Programming windowon page 5-126.) When 
Tl programming is finished,
select the Exit command button. Awindow appears that
asks “Perform Update to Database?” To update the data-
base and exit to the Applications Menu, select Yes. Or,select No to exit without saving any changes. Select
Cancel to return to the Tl Programming window with-
out updating the database.
Page 5-129 
						

							PROGRAMMINGINTER-TELPRACTICESIssue 1, November 1994IMX/GMX 256 INSTALLATION & MAINTENANCE
wTl From Public Network&urce of Reference Clock
r (Master Operation Only)-
w0l On-Board OscillatorProvides Ref. Clock for 
256
0External Clock
Master/Slave Loop Operation
Master (System Timing)
Slave (Loop Timing)
l-. REFERENCE CLOCK PROGRAMMING:
(Shown in 
Tl Interface window on page 5-128.)
Select the Clock command button to access the win-
dow shown above.
- Tl FROM PUBLIC NETWORK: First deter-
mine whether the 
Tl Card is connected to the
public network. Ifit is, place an X in the Tl From
Public Network Check box. 
The card is automat-
ically designated as a slave clock (the public net-
work always acts as the master clock).-PROVIDES REFERENCE CLOCK FOR
256: The first Tl Card programmed in the sys
tern is automatically assigned as the 
256 System
reference clock. The system can have only one
reference clock. If you attempt to assign the ref-
erence clock to another Tl Card by placing an X
in this box, a window will appear that asks if youwish to remove the previously programmed
reference clock. Select Yes to reassign the refer-
ence clock to the new 
Tl Card, or select No to
leave the assignment unchanged.
- MA!3TER/SL4VE LOOP OPERATION: If
the card is connected to another Tl Card, deter-mine whether the card is a master clock or a slave
clock (in relation to the card on the other end).
Place a dot in the appropriate option button in the
Master/Slave Loop Operation box.
-SOURCE OF REFERENCE CLOCKz If the
Tl Card is designated as the reference clock for
the 256 System and as a Master clock, this box
will change 
from gray to black. DO NOT change
the source clock; On-Board Oscillator should be
selected. The External Clock option is reserved
for future use. It is not currently supported.
NOTE: If the Source of Reference Clock option
is set incorrectly (External Clock is selected), the
system will use the backup clock instead of the
clock on this 
Tl Card and the Reference Clock
LED will not be lit. (The LED lights to indicatethat the 
TlC clock is providing the reference
clock.)
- OK or CANCEL: When the clock program-
ming is completed, select the OK command but-
ton. Or, to leave the clock unchanged, select the
Cancel command button.
Page 
5-130 
						

							INTER-TELPRACTICRSIMx/GMx 256 lNSlALLATION & MAINTENANCEPROGRAMMINGIssue 1, November 1994
- output l&E10
l Tabular Errors per Hour/Day0
Graphical Errors per Hour0
GraphicalErrorsper Day
[ tort/FileJ
Error ‘Qpe
orrent Errors
-Current HourCurrent Day
Controlled Slips
CRC-6 (Cyclic Redundancy Check)
ES 
(Errored Seconds)0
OOF/COFA (Out-of-Frame)
SES (Severely 
Errored Seconds)0
TODV (Transmit One’s Density Violations)0
UAS (Unavailable Seconds)
0l
ERROR DIAGNOSTICS: (Shown in Tl Interfacecommand button to designate the destination
window on page 5-128.) You can view selected re-printer port or PC file for the report. The follow-
ports that show the current 
Tl error counts (by houring window appears. Place a dot in the desired
and day) for the selected card in a graph or table. Ifport or file option button by selecting it. If 
FlLB
using a stand-alone PC, the reports can be sent tois selected, enter the destination file path name in
files on the PC or to a printer port. To print the re-the text box. When the destination is pro-
ports, the necessary printer driver must be installedgrammed, select the OK command button. To
on the PC. For information on installing a driver, re-exit without changing the destination, select the
fer to page 5-8.
Cancel command button.
- OUTPUT TYPE: Determine whether the out-
put will be printed in a table or as a graph. If you
want a graph, determine whether it will represent
errors by the hour or by the day. Select the de-
sired option to place a dot in the option button.
- UPDATE: To ensure that the error statistics are
as current as possible, select the Update com-
mand button.
- CURRENT ERRORS: This list box shows how
many errors haveoccurred in the current day and
the current hour. To select the error type that will
be shown in the graph or table, move the high-
light bar to the desired error type in the list box.
When you press the SPACE BAR, the table or
graph is displayed on the screen (and, if enabled,
can be sent to the printer).
- PORT/FILE: Available in stand-alone pm-
gramning sessions only. Select the Port/File
PN’jjQFILE: 71
(okj (x=-j ’
- OK: When finished viewing the graph or table,
select the Ok command button to return to the 
Tl
Interface window.
Page 5-131