Inter-Tel Microprocessor Key Installation And Maintenance Practices Manual

							INTER-TEL PRACTICES FEATURES 
SECTION 340-100-200 
Issue 3, April 1983 
Digits Keysets 
Pressed Accessed 
Xl 10-19 
*2 20-29 
x3 30-39 
*4 40-41 
*5 All Keysets 
SPCL (On Model 
1032T Only) All Keysets 
After you hear the double beep, you have 10 seconds 
to make the announcement. 
Refer to Section 340-100-400 for programming 
instructions for removing a keyset from paging. 
4.08 Message Waiting Indication 
The message waiting indication feature can be used 
to leave and receive messages at the operator’s 
station. 
When the DlAL/MSG lamp on a station flashes at a 
fast flash rate (twice a second, 120 IPM) it indicates 
that there is a message waiting at the message center 
(operator’s station). To activate this signal at another 
station, lift the handset, dial the extension and press 
the DIAL/MSG key. This will activate the message 
waiting lamp on the dialed extension and automat- 
ically transfer you to the message center (operator) 
where you may leave a message. 
To release the message waiting indication, lift the 
handset and dial the message center. The message 
lamp will stop flashing as soon as the handset is lifted. 
After receiving the message, hang up. 
4.09 Message Center 
A message center provides a convenient and reliable 
central location where messages may be given or 
received. 
The message center may receive messages for 
stations which are unattended.or busy when a calling 
extension presses the DIAL/MSG key (see Section 
4.08, Message Waiting Indication). The unattended 
or busy station will then receive a visual message 
waiting signal (DIAL/MSG key flashes twice a 
second, 120 IPM). 
4.10 Executive Priority Call Waiting 
Executive priority allows you to signal, without invading the privacy of a busy station, that you wish 
to talk. 
To use executive priority call waiting, DIP switch 6 
inside the station must be closed. After dialing the 
busy extension, press the pound (#) key as many 
times as you wish to signal the station. The station 
will receive a double beep for each time you press 
the key (but no more than once every 4 seconds). 
The station HOLD/FWD will also flash at a fast rate 
(twice per second, 120 IPM). As soon as the busy 
station is free, you will be automatically connected. 
Executive priority cannot be used to signal a station 
that has a call camped-on, that has DIP switch 3 
open or that is in the do-not-disturb mode. 
Stations with executive priority enabled cannot use 
the intercom callback feature. 
4.11 External Paging Speakers 
This feature can be used in existing paging areas 
where MPK telephones are not easily heard or 
placed. 
The MPK system may be connected to an external 
paging system which is not part of the system. This 
paging system uses an extension number as a 
paging area and therefore can be separated from 
normal paging zones 1-5. Customer-supplied pag- 
ing systems, speakers and engineering are required 
for external paging. 
To use external paging, call the desired extension 
number. No audible tone (double beep) will be 
heard. Make your page (no time limit exists on 
external paging). Hang up when the page is com- 
pleted. 
When placing an all page, the external paging 
amplifier will also be activated. Initiating an external 
page will not initiate an all page. 
4.12 Account Codes 
This programmable feature is intended for those 
users requiring tracking or billing on a day-to-day 
basis. 
The MPK system will output an account code in the 
remaining available character space of the dialed 
number field of a Station Message Detail Recording 
(SMDR - See Section 340-100-601). The total 
dialed number field is 24 characters long. 
Page 2-11  
						

							FEATURES 
SECTION 340-100-200 
Issue 3, April 1983 
To use the account code on an outside call, enter an 
asterisk (*) after dialing; this is to distinguish the 
account code from the telephone number. Then 
enter the account code and perform any normal 
MPK function. When the call is terminated, the 
called telephone number and account code will be 
printed. 
The account code is output to the telephone net- 
work. Therefore, if the account code is dialed first or 
during a Special Service Call (SPRINT, MCI) the call 
may fail to be processes’. For a SPRINT or MCI call 
that requires more than 24 digits, the account code 
will not be printed. 
NOTE: Only a call lasting at least 30 seconds will be 
printed if system option 7 or 2 is enabled. 
4.13 Multiple Speed DieYing 
The speed dialing section of the MPK multi-line 
keyset may be used to dial multiple numbers in 
series. This feature shouI,d be used for Specialized 
Common Carrier type cal s. 
To make a Specialized Cc mmon Carrier Call, often a 
sequence of three or mo e numbers are needed to 
make one call: the Spe ialized Common Carrier 
number, an account coo? and the long distance 
number to be dialed. Th:!refore, three speed dial 
storage locations must be used to make one call. 
However, when the DIAL/MSG key, which normally 
redials the most recently dialed number, is pressed a 
second time, the present iine is dropped and re- 
accessed. This problem is solved by enabling the 
system 12-second redial op!ion (option 5). This will 
allow the multiple stored number locations to be 
sent before the line is re-accessed. The station DIP 
switch option 1 must be opened if the Specialized 
Common Carrier does not accept a leading 1. 
To use the multiple speed dialing feature, select a 
line key. Press the DIAL,‘MSG key and the first 
stored number location. Fispeat for the remaining 
stored number locations. 
NOTES: 1) 
2) Calls of appro: imately 70 seconds dura- 
tion will not bo recorded on the SMDR 
when system cption 5 is on. 
Twelve secords must elapse after mul- 
iiple speed cialing before last number 
redial may be used. INTER-TEL PRACTICES 
4.14 Station Transfer S.ecurity 
With this feature, calls may be transferred to unequip- 
ped extensions which are used as security parking 
codes. The reverse transfer pickup feature may then 
be used to recover the calls, or recall times will 
transfer the call to the originator or to the operator. 
5.00 DSWBLF STATION SPECIAL FEATURES 
This section defines the special features that you 
may select in addition to those basic to call proces- 
sing. Features discussed are listed below. They 
include those of the Direct Station Selector and 
Busy Lamp Field (DSS/BLF), an optional device 
especially developed for convenient and efficient 
processing of calls. 
Key Functions of the DSS/BLF 
Visual indications of the DSS/ELF 
Intercom Calling with the DSS/BLF 
Call Transfer with the DSS/BLF 
Call Transfer to a Busy Station with the 
DSS/BLF 
Reverse Transfer with the DSS/BLF 
Call Screening with the DSS/BLF 
Activating the Message Waiting Indication 
with the DSS/BLF 
5.01 Key Functions of the DSS/BLF 
Two DSS/BLF models are available for use with the 
MPK system: the 3532D, and the 3030D. 
A. 
B. The 35320 DSS/BLF. This model has 32 station 
keys and 3 special function keys. The DSS/BLF 
assigns the station keys to keyset extensions 10 
through 41, beginning with the upper left hand 
key and progressing downward left to right. The 
remaining three keys are special function keys 
and are presently unassigned. 
THE 3030D DSS/BLF. This model has 30 station 
keys. The DSS/BLF assigns the station keys to 
keyset extensions 10 thro.ugh 39, beginning with 
the upper left hand key and progressing down- 
ward left to right. There are no special 
function keys on the 3030D DSS/BLF. 
5.02 Visual Indications of the DSS/BLF 
The DSS/BLF provides information about the status 
of the system with a single glance at the key lamp 
display. Since all keysets in the system have an 
Page 2-12  
						

							INTER-TEL PRACTICES 
assigned key on the DSS/BLF, steady ‘or flashing 
states of the individual lamps beneath the keys 
indicate a wide variety of useful information. 
A steady lamp on the DSS/BLF indicates that the 
station is in use. A lamp on the DSS/BLF flashing at a 
slow rate (once every two seconds, 30 IPM) indicates 
that the station is in the do-not-disturb mode. A 
station lamp flashing at a fast rate, (twice a second, 
120 IPM) indicates that there is a line recalling from 
that station. The fast-flashing line key on the 
associated keyset indicates which line is recalling 
from the station. This will occur when the recall 
times have expired. 
5.03 Intercom Dialing with the DSS/BLF 
To further reduce access time, all stations may be 
accessed by pressing a single key on the DSS/BLF. 
To place an intercom call from a DSS/BLF, lift the 
handset of the associated keyset and press the key 
on the DSS/BLF of the desired extension number. 
The system will automatically dial the extension and 
the called party will hear the incoming intercom alert 
tone. 
To place a private intercom call, press the pound (#) 
key on the associated keyset after pressing the 
desired extension on the DSS/BLF and hearing a 
double beep. The called party will then hear a 
continuous double beep and can either pick up the 
handset or press the ON/OFF key before answering. 
NOTE: If the called party elects to press the ON/OFF 
key, privacy is, of course, e/iminated. 
5.04 Call Transfer with the DSS/BLF 
An outside call may be transferred to another station 
using a DSS/BLF, by pressing the key of that 
extension on the DSS/BLF requested by the outside 
party and hanging up. The user transferring the call 
may voice announce the call before hanging up, if so 
desired. 
5.05 Call Transfer to a Busy Station with the 
DSS/BLF 
Any call can be transferred to a busy station using 
the DSSIBLF. While on an outside call, press the key 
of the DSS/BLF that is associated with the desired 
extension. After you hear the busy signal, complete 
the transfer by hanging up. This will automatically 
transfer the call to the busy station. If DIP switch FEATURES 
SECTION 340-100-200 
Issue 3, April 1983 
option 3 is closed, the busy station will hear a single 
tone every 15 seconds ai notification that a call is 
waiting. 
5.06 Reverse Transfer with the DSS/BLF 
To reverse transfer with the DSS/BLF, pick up the 
handset and press the extension key from which you 
wish to retrieve the call. Wait for a double beep and 
then press the XFFVCONF key. Finally, press the 
medium flashing line key and ask to take a message 
before hanging up. 
5.07 Call Screening with the DSS/BLF 
To screen calls with the DSS/BLF, press the 
DSS/BLF key of the desired extension. If the called 
party does not answer or refuses t.he call, do not 
hang up. Instead, press the medium flashing line key 
and ask to take a message before hanging up. 
5.08 Activating the Message Waiting Indication 
with the DSS/BLF 
To activate the message waiting indication, pick up 
the handset, press the extension where you wish to 
leave the message and wait for the tone. Then press 
the DIAL/MSG key and hang up. 
6.00 ON-SITE PROGRAMMING 
The featured modes of operation available to the 
MPK system include: TEST mode, PROGRAM mode, 
INITIALIZE mode and RESET mode. These modes 
are selected via the miniature switch assembly 
located on the CPU board. (See Section 340-100- 
400, Programming.) 
The MPK system also features two types of program- 
ming parameters: system and station. System par- 
ameters provide for programming of options which 
affect the system as a whole. Station parameters 
provide for programming of options which affect 
individual stations only. 
6.01 Special Modes of Operation 
A. PROGRAM Mode. This program function places 
the MPK system in its programming mode. In 
this mode of operation, the station and system 
parameters may be entered using the station 
keys. 
B. INITIALIZE Mode. Initializing the MPK system 
establishes the basic status of certain system 
Page 2-13  
						

							FEATURES 
SECTION 340-l 00-200 
Issue 3, April 1983 
features. The initialized status of these features 
are: 
1. 
5. 
6. 
7. 
8. 
9. 
10. All keysets can gain access to all outside 
lines. 
The operator’s extension is 10. 
The message zenter is extension 10. 
Only the operator’s extension will ring 
audibly for incoming calls. 
There will be: no station options on any 
keysets. 
The transfer recall time is 60 seconds. 
The hold recaiil time is 60 seconds. 
No numbers have been designated as ab- 
sorbed digits. 
No numbers have been designated as WATS 
lines. 
No system options have been assigned. 
C. RESET Mode. The RESET mode is used to reset 
the hardware and software. This will clear the 
system of all calls in process. The RESET mode 
has no effect on any system or station program- 
ming. 
D. TEST Mode. The TEST mode checks the Read 
Only Memory (ROM) and the Random Access 
Memory (RAM) located on the CPU board. This 
test gives the installer a visual indication of the 
status of memory and the progress of the test 
through the LED’s on the CPU board. 
NOTE: When the TEST mode is entered, a// user 
defined programming is erased. 
6.02 Types of Programming Parameters 
A. System Programming Parameters (Ses! also 
Section 340-200-400). There are five system 
parameters which can be programmed to adapt 
the MPK system to your particular office environ- 
+ ment: INTER-TEL PRACTICES 
Code 
Explanation ,; 
#4 
Transfer Recall Time (Programmable l- 
255 Seconds) - Sets the recall time limit 
for a transferred call. After this tirne limit 
the call will be returned to the transferring 
station and will ring at the station for the 
HOLD RECALL TIME. The call will then 
transfer to the operator and a recall flash 
will appear if the system is DSSBLF- 
equipped. After arriving at the operator, it 
will ring for IO minutes. If the call is still 
not answered, it will be considered an 
abandoned call and dropped. 
#5 
Hold Recall Time (Programmable l-255 
Seconds) - Sets the time that a call 
placed on hold will remain at that station 
silent. It will then ring at that station for a 
second hold recall time and transfer to 
the operator’s extension where it will ring 
for 10 minutes. If the call is still not 
answered, it will be considered an aban- 
doned call and dropped. 
#6 
Absorbed Digits - Any digit that the 
central office will absorb can be pro- 
grarnmed into the MPK system. This will 
prevent a toll-restricted station from plac- 
ing a toll-restricted call directly or through 
the operator. 
#7 WATS Line Identification - Enables tele- 
phones that are toll-restricted to make 
toll calls on any line specified as a WATS 
line. 
#8 System Options: 
1 
- SMDR - Seven digits or more, thirty 
second duration. Prints on the SMDR 
printer any dialed number of 7 digits or 
more after an outside call has been 
more than 30 seconds in duration. 
2 - SMDR - Eight digits or more, 30 
second duration. Prints on the SMDR 
printer any dialed number of 8 digits 
or more after an outside call has been 
more than 30 seconds in duration. 
3 - Enable Error Messages - Allows sys- 
tem diagnostic error printout. Assists 
in locating defective extensions. 
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							INTER-TEL PRACTICES FEATURES 
SECTION 340-100-200 , 
Issue 3, April 1983 
4 - Conference Card Compatibility - Not 
normally used. 
5 - 12 Second Redial - Inhibits the last 
number redial key from reselecting a 
line until 12 seconds have elapsed 
with no dialing. This is necessary to 
allow chained speed-dialed calls. 
6 - Held Call Loop Release (1.2 Seconds) 
- For use with systems served by ESS 
(Electronic Switching System) Cen- 
tral Offices. 
7 - 600 Millisecond Hookflash - For use 
behind a PABX system. 
B. Station Programming Parameters. Station op- 
tions are entered through the keypad and line 
keys of the station to be programmed. 
NOTE: A station can be disconnected without loss 
of ifs programming options; stored numbers, 
however, will be lost. 
Stations options include: 
Code Explanation 
#I Lines Restricted - Restricts the station 
from outgoing access to specified CO. 
lines. 
#2 Ring-In From Lines - Allows the C.O. 
lines specified to ring in audibly at the 
station. 
#3 Station Options: 
1 - Unused. 
2 - Remove From Paging - Removes the 
station from its fixed paging zone and 
from all-paging. 
3 - Unused. 
4 - Ring Intercom First- Inhibits thestation 
from automatically entering the hands- 
free intercom mode. An incoming inter- 
com call will ring repeatedly until it is 
manually acknowledged byeitherpick- 
ing up the handset or pressing the 
ON/OFF key to activate the handsfree 
circuit. 5 - Unused. ’ 
6 - Toll Restrict - Disconnects the station if 
the digits 0 or 1 are the first numbers 
dialed, unless an 800 number is dialed. 
The station also disconnects if any 
numberof morethaneightdigitsisdialed. 
After disconnection, the station hears a 
busy tone. 
7 - Unused. 
7.00 PROGRAMMABLE STATION HARDWARE 
FEATURES 
A station can also be programmed by switches 
located inside the station. These switches activate 
functions for an individual station only. 
7.01 Digit 1 Dial (Switch 1) 
When switch 1 is closed, the digit 1 precedes any 
lo-digit speed dial number stored in the station. 
7.02 Speed Transfer (Switch 2) 
When closed, this switch allows you to transfer calls 
by dialing only theextension number, eliminating the 
need to press the XFRKONF key. 
NO JE: This eliminates the possibility of dialing calls 
except for speed dialing. 
7.03 Off-Hook Ring (Switch 3) 
When closed, this switch allows call waiting tones to 
be heard when the station is in the off-hook mode. 
The signaling tones are background beeps heard 
every 15 seconds over a C.O. call. 
7.04 Night Station (Switch 4) 
If this switch is closed, the station rings audibly 
when the system is in night mode. A call may be 
received on a station in the night mode even if it isn’t 
ringing. 
7.05 Full-Duplex (Switch 5) 
When closed, thisswitch allows the connection ofan 
external speaker for handsfree conversations on 
(2.0. calls. 
Page 2-15  
						

							FEATURES 
SECTION 340-100-200 
Issue 3, April 1983 INTER-TEL PRACTICES 
7.06 Executive Priority Call Waiting (Switch 6) 
When this switch is closed, the station has the ability 
to signal a station that is busy every time the pound 
(#) key is pressed (but no more than approximately 
once every four seconds). Note that activating this 
feature disables the intercom callback feature. 
Stations with a call camped-on, with switch 3 open 
or in the do-not-disturb mode cannot be signaled. 8.04 Enable Error Messages 
This diagnostic routine will identify a malfunctioning 
station. (See Section 340-1OCG601, SMDR.) 
8.05 REST Program 
This program restarts the MPK system. All calls in 
progress and the non-data base Random Access 
Memory (RAM) entries in the MPK system are 
cleared by this function. 
7.07 Do-Not-Disturb (Switch 7) 
9.00 SYSTEM RS-232C OUTPUTS 
When closed, this switch enables you to put your 
station in the do-not-disturb rnode by pressing the 
HOLD/FWD and the asterisk (‘) keys. Placing the 
operator’s extension in do-not-disturb places the 
system in night ring mode. 
8.00 DIAGNOSTICS AND SYSTEM SELF-TEST- 
ING (OPTIONAL) 
Any RS-232C-compatible terminal can be used to 
take advantage of the diagnostic and self-testing 
features of the MPK system. 
8.01 TEST Program 
This routine will test the Read C’nly Memory (ROM) 
and the Random Access Memorcj (RAM) of the MPK 
system. 
8.02 Online Monitor 
This program may be used to access and change the 
MPK system memory. For this reason, it should be 
used by qualified personnel only (See Section 340- 
100-401, Online Monitor.) 
8.03 Display Program (DISP) 
This routine displays in ASCII characters the activity 
of the MPK system or an individual station on the 
terminal or printer. Using this featu;,e, station dialing 
and command entries may be monitored. To display 
the DSS commands, the terminal must be set to 
display normally nonprintable AS 311 control char- 
acters. (Not all terminals have this capability, see 
Section 340-100-401, Online Monitor.) 9.01 Station Message Detail Recording (SMDR) 
The SMDR printout provides the following infor- 
mation: 
Outgoing Calls Incoming Calls 
Station Station 
Number dialed Account code (optional) 
Account code (optional) Elapsed Time 
Elapsed time 
C.O. line 
C.O. line 
An SMDR message may be up to 40 characters in 
length. Information is transmitted to the device 
connected to the RS-232C port on the CPU PCB. 
SMDR printout of incoming calls is inhibited if 
system option 1 or 2 is enabled. 
9.2 Error Messages 
The MPK system displays an error message when 
improper information is received from any keyset. 
Refer to Section 340-l 00-401. 
Page 2-16  
						

							INTER-TEL PRACTICES INSTALLATION 
SECTION 340-100-300 
Issue 3, April 1983 
INSTALLATION 
CONTENTS PAGE 
1.00 INTRODUCTION ..................... 
.3-l 
General 
............................. ..3- 1 
Unpacking ........................... 
.3-l 
KSU Location ......................... 
.3-l 
Power Supply Installation ............. 
.3-2 
System Electrical Test ................. 
.3-2 
2.00 CABLING INSTRUCTIONS ............ 
.3-2 
General Requirements ................ 
.3-2 
Starting the Cabling. .................. 
.3-2 
Installation Method A .................. 
.3-2 
Installation Method B ................. 
.3-2 
Central Offlce (C.O.) Lines ............ 
.3-2 
3.00 PRINTED CIRCUIT BOARD INSTAL- 
LATlON.............................3- 3 
Central Processor Unit (CPU) PCB ..... .3-3 
Central Office Unit (COU) PLB ........ .3-3 
Station (STN) PCB .................... .3-3 
Conference (CNF) PCB ............... .3-4 
4.00 STATION WIRING TEST .............. 
.3-4 
General 
............................. ..3- 4 
5.00 KEYSET INSTALLATION .............. 
.3-4 
General 
............................. ..3- 4 
Keyset Options ....................... 
.3-4 
Instrument Installation ................ 
.3-4 
Voltage Regulator Setting ............. .3-4 
Speakerphone Installation ............. .3-4 
8.00 DIRECT STATION SELECTOR/BUSY 
LAMP FIELD (DSS/BLF) ............ .3-5 
Installation ........................... .3-5 
Installation with Optional System Battery 
Back-Up (or Without an AC Outlet 3-5 
Voltage Regulator Setting ............. .3-8 
7.00 CPU INITIALIZATION ROUTINE ...... 
.3-6 
8.00 OPTIONALSTATION MESSAGE DETAIL 
RECORDING (SMDR) ............... 
.3-6 
Installation ........................... 
.3-6 
9.00 PAGING CONNECTIONS ............. .3-6 
InternalPaging ...................... ..3- 6 
External Paging ....................... 
.3-6 
10.00 OPTIONAL MUSIC-ON-HOLD (MOH) 
MODULE ........................... 
.3-6 
Installation .......................... ..3- 6 CONTENTS PAGE 
11.00 OPTIONAL BATTERY BACK-UP., . . . . ..3-6 
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-6 
Installation of Battery Back-Up . . . . . . . . .3-7 
1.00 INTRODUCTION 
1.01 General 
This section describes the prodedures required to 
ensure correct installation of the MPK system. De- 
tailed instructions provide for: cabling, PCB’s, wiring, 
keysets, Direct Station Selector/Busy Lamp Field 
(DSWBLF), CPU initialization, Station Message 
Detail Recording (SMDR) and paging connections. 
1.02 Unpacking 
After unpacking the MPK system, check the packing 
slip against the equipment received. If equipment is 
missing, contact INTER-TEL Order Processing. 
Check all Printed Circuit Boards (PCB’s) upon 
unpacking. All PCB’s are fully loaded except the 
COU PCB. Integrated circuits U20A and U2OB will 
be missing if the COU PCB is equipped for Dual- 
Tone Multi-Frequency (DTMF) dialing. (Refer to 
Figure 3-l .) 
NOTE: The printed circuit board (PCB) assemblies 
contain static sensitive componefi ts. Keep 
all PCB’s in theirprotective plastic bags until 
they are installed in the Key Service Unit 
(KSU). Hand/e all PCB’s not in the protective 
bags by the PCB edges only. 
1.03 KSU Location 
The objective of determining proper equipment 
location is to minimize cable run length, and to 
provide the proper environmental conditions for the 
KSU. Install the KSU at a site most suitable to 
meeting the following conditions: 
A. Availability to 10512%’ 60HZ 15 amp single 
phase power. 
B. Location within 25 ft. of the Central Office 
(C.O.) line terminations. 
C. The ambient temperature does not exceed 32” 
F to 100” F. (80’ maximum room temperature.) 
Page 3-l  
						

							INSTALLATION 
SECTION 340-100-300 
Issue 3, April 1983 
D. The KSU is not located near any Strong magnetiti 
fields, such as heavy motors or large copy 
machines. 
E. AC power from a dedicated circuit breaker. 
F. Placement of the KSU more than 4 in. from all 
walls. 
1.04 Power Supply Installation 
It is recommended that the power supply be mounted 
approximately 4 in. above the KSU. (Refer to Figure 
3-2.) Connect the power cable between the power 
supply and the KSU. 
NOTE: Do not force the connectors; they are keyed 
for proper insertion to prevent incorrect 
connection. 
1.05 System Electrical Test 
1. Check the value of the following ,fuses in the 
power supply: 
FUSE VOLTAGE MPK/l MPK/II 
Fl 115VAC 2 Amp 4 Amp 
F2 +36VDC 3 Amp 5 Amp 
2. Plug the AC line cord into a source of 105-125 
VAC power. 
NOTE: Ensure that the electrical outlet is on a 
3. 
4. 
5. separate dedicated circuit breaker. 
At this point in the test procedure no PCB’s 
should be installed in the KSU. 
Apply power to the system by placing the 
ON/OFF switch in the ON postiion. 
With a Digital Voltmeter (DVM) measure the 
following voltages on the inside of the backplane 
of the KSU. (Refer to Figure 3-3 for test lo- 
cations.) 
+3OV f 5.OV TPl to TP2 
-12V f 1 .OV TP3 to TP4 
+5V f 0.25V TP5 to TP4 
NOTE: If the measured voltages are not within 
specified tolerances, do notproceed. Severe 
damage will occur if a PCB is inserted with 
improper voltages present. Contact INTER- 
TEL Field Service for assistance. INTER-TEL PRACTICES 
6. If system voltages are within tolerances, remove 
AC-power by moving the ON/OFF switch to the 
OFF position. 
2.00 CABLING INSTRiJCTIONS 
2.01 General Requirements 
Two methods used for installing MPK stations are 
described below. Select the method best suited for 
your requirements. 
2.02 Starting the Cabling 
Standard floor plans should be developed to aid in 
proper station wiring. A cable identification plan 
must be utilized. 
Using telephone industry standard three-pair cable, 
place a run to each location shown on the floor 
plans. Both ends of every cable must have identical 
markings to prevent cable interchange. 
NOTE: Avoid cable runs parallel fo light fixtures or 
to AC lines not in conduit. 
Terminate the station end of the cable on standard 
modular connecting blocks, either surface-mount- 
ing or flush-mounting. (Refer to Figure 3-4 or 3-5.) 
2.03 Installation Method A 
Installation method A requires a special crimping 
tool (part no. MCT-6s) and specially designed 
modular connectors for use with standard solid 
copper 24 gauge wire (part no. 624). The crimping 
tool and solid modular connectors are manufactured 
by Futureonics Inc. and are available through most 
suppliers. (Refer to Figure 3-6 for typical layout.) 
2.04 Installation Method B 
Installation method B requires a special 66 type 
connecting block with 16six-pin modularjacks (part 
no. S66M450-MPK). This block is manufactured by 
Siemon Co. and is available through most suppliers. 
(Refer to Figure 3-7 for typical layout.) 
2.05 Central Office (C.O.) Lines 
To install the CO. lines run a two-pair standard 
cable (one for each two .C.O. Lines) from the 
telephone company terminal to a modular con- 
necting block at the KSU. Using a double-ended 
modular cable (standard 6 ft. four-conductor mod- 
ular-to-modular base cord is recommended), con- 
nect the CO. lines to the KSU. (Refer to Figure 3-8.) 
Page 3-2  
						

							INTER-TEL PRACTICES 
3.00 PRINTED CIRCUIT BOARD INSTALLATION 
3.01 Central Processor Unit (CPU) PCB 
To install the CPU PCB (340.10) proceed as follows: 
1. Inspect the CPU PCB for loose integrated 
circuits or shorted component leads. 
2. Check the rear (solder side) of the PCB to 
ensure there is no shipping foam or tape at- 
tached to the card. 
3. Activate onboard battery by moving the min- 
iature shorting clip so as to short the two pins 
closest to the card edge. (Refer to Figure 3-9.) 
4. Verify that the CPU function DIP switches (DS) 
are in the proper positions. (Refer to Figures 3-9 
and 3-10.) 
5. install the CPU PCB with the components 
facing left in the slot marked “CPU” in the KSU. 
6. Apply power to system. 
7. Observe the flash rates of the light-emitting 
diodes (LED’s). The flash rates of the LED’s will 
indicate the proper operation of the CPU PCB. 
The flash rates should be as follows: 
LED DS-1 flashes about 5 times a second. 
LED DS-2 flashes about 2 or 3 times a second. 
LED DS-3 almost constantly on. 
LED DS-4 off. 
8. If LED DS-4 is illuminated, the system has had a 
watchdog timer interrupt. Momentarily close 
function switch 2 (RESET) then return it to the 
open position. This will reset the CPU and place 
it in the proper operating mode. 
NOTE: If the above operation does not extinguish 
LED LX-4, replace the CPU PC6 or contact 
INTER-TEL Field Service. 
3.02 Central Office Unit (COU) PCB 
A. To install the COU PCB (340.20), proceed as 
follows: 
1. Inspect the COU PCB for any shorted 
leads or loose integrated circuits. INSTALLATION 
SECTION 340-100-300 
Issue 3, April 1983 
2. Determine if the local central office is 
equipped for DTMF dialing. If it is, the 
following integrated circuits will be deleted: 
U20A and U2OB. (Refer to Figure 3-l for 
component location). 
3. Install the COU PCB with the component 
side facing left and in the first available COU 
slot to the right of the CPU PCB. (Refer to 
Figure 3-l for PCB location). 
4. Repeat this procedure for every COU PCB 
in the system. 
5. Each COU PCB contains two interface cir- 
cuits. 
B. To connect the central office lines to the COU 
PCB modular jack assembly, proceed as follows: 
1. Route a two-pair feeder cable from the 
central office distribution block to the mod- 
ular connecting block mounted on the KSU 
backboard for every two C.O. lines. (Refer 
to Figure 3-8.) 
2. Using a four-conductor modular-to-modu- 
lar cable, connect the COU PCB to the 
modular connecting block. 
3. Each COU PCB will service two lines. 
3.03 Station (STN) PCB 
A. To install the STN PCB (340.30), proceed as 
follows: : 
1. Inspect the STN PCB for shorted leads or 
loose integrated circuits. 
2. Install the STN PCB with the component 
side facing left and in the first available slot 
to the left of the card file labeled “STN.” 
(Refer to Figure 3-2 for the PCB location.) 
3. Repeat for every additional STN PCB in the 
system. 
NOTE: Each STN PCB contains four circuits. 
4. Station numbering is 10 thru 25 on MPK/I 
and 10 thru 41 on MPK/II. The top modular 
jack on the first STN PCB is station 10, the 
second from the top is 11, and so on. 
Page 3-3  
						

							INSTALLATION 
SECTION 340-100-300 
Issue 3, April 1983 
B. To connect the STN PCB to INTER-TEL MPK 
keysets proceed as follows: 
C. Method A 
1. Method A requires the use of specialized 
six-conductor modular plugs connected dir- 
ectly to the MPK station PCB. (Refer to 
Figures 3-4 and 3-6.) 
2. Connect the modularized station cable dir- 
ectly into the associated PCB. 
3. Repeat steps 1 and 2 for all stations. 
D. Method B 
1. Method B requires the use of a special 66 
type (S66M450-MPK) connec!ing block. (Re- 
fer to Figure 3-7.) 
2. Connect the modular-to-modular six-con- 
ductor cable from the modular station jack 
to the associated STN modular jack. 
3. Repeat step 2 for all stations. 
3.04 Conference (CNF) PCB 
A. To install the CNF PCB (340.40) proceed as 
follows: 
1. Inspect the CNF PCB for any shorted com- 
ponent leads or loose integrated circuits. 
2. Install the CNF PCB in the slot marked 
“CNF.” (Refer to Figure 3-2.) 
NOTE: The CNF PC0 contains two conference cir- 
cuits. 
4.00 STATION WIRING TEST 
4.01 General 
Before installing any telephone instruments, makea 
complete system wiring test as follo\,ls: 
1. With a digital voltmeter measure across the RED 
and GREEN wires in the modular connecting 
block at the staion end. The voltage should be 
+30VDC f 5V (RED being positive). If the 
voltage is not present, trace all associated 
wiring back to the KSU. INTER-TEL PRACTICES 
b. 
2. Measure the voltage-across the YELLOW and .,i 
BLACK and the-BLUE and WHITE wires. There 
should be NO voltage present. If a voltage is 
present, trace all associated wiring back to the 
KSU. 
3. Measure the resistance from the YELLOW wire 
to the BLACK wire. Also measure the resistance 
from the BLUE wire to the WHITE wire. If the 
resistance measures higher than 80ohms, trace 
all associated wiring back to the KSU. 
4. Repeat steps 1,2, and 3 for all station wires. 
5.00 KEYSET INSTALLATION 
5.01 General 
The purpose of this section is to provide sufficient 
information to program and install the 416T MPK/l 
and the 1032T MPK/II keysets. 
5.02 Keyset Options 
Before any electrical connection is made between 
the KSU and the keyset, theoption switches located 
within the keyset must be selected. To gain access to 
the option switches, proceed as follows: 
1. 
2. 
3. Remove the woodgrained faceplate by pushing 
the spring-loaded tab at the top of the faceplate 
backwards, and lifting the top of the faceplate. 
Remove the top cover of the telephone instru- 
ment which is held in place by two Phillips head 
screws. 
Carefully bend the two locking tabs which 
protrude through the top of the keyboard and 
LED assembly; lift the board up; and slide 
forward. 
NOTE: The board has an attached ribbon cable. 
Care should be taken not to break or dis- 
lodge this cable. 
4. Lift the board out of the keyset assembly. 
5. Locate the DIP switch assembly. (Refer to 
Figure 3-13.) 
6. Refer to Figure 3-l 1 for switch selectable keyset 
options. 
Page 3-4