Toshiba Strata Dk24, Dk56, Dk96 Instruction Manual

							INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY1991 
TABLE2-F 
DK96MODELCONTROLSANDlNDlCATORS 
CONTROL/INDICATOR 
Figure 2-13 Item No.) TYPE OF COMPONENT DESCRIPTION 
3N/OFF Switch (1) Two-position rocker switch Power switch for application of AC 
input power from wall socket to KSU 
power supply 
AC IN Connector (2) 3-pin keyed male connector Interface connector for application of 
AC power from wall outlet 
Interface connector for LG/FG ground 
LG/FG Connector (3) 2-pin keyed male connector strap (ground strap must remain 
installed in LG/FG connector for all 
system applications) 
Terminal connections for SG/FG 
SG/FG Terminal Two-terminal screw-type ground strap (ground strap must 
Block (4) terminal block remain installed on SG/FG terminal 
block for all system applications) 
BATT +/- Connector (5) 2-pin keyed male connector Interface connector for reserve power 
batteries 
FG Terminal (not shown) Combination slotted/Phillips screw KSU frame ground terminal 
7-pin keyed male connector Interface connector for application of 
DC OUT Connector (7) 
power supply +5VDC and -24VDC 
outputs to KSU’s backplane 
-24Vl Circuit 
Breaker Circuit breaker for power supply 
(8) Push-to-reset circuit breaker -24VDC output to PCB slots SO1 
and SO2 
-24v2 CirCUit 
Breaker (9) Push-to-reset circuit breaker Circuit breaker for power supply 
-24VDC output to PCB slots S03, S04, 
and SO5 
-24v3 ChIXit 
Breaker Circuit breaker for power supply 
(, o) Push-to-reset circuit breaker -24VDC output to PCB slots S06, S07, 
and SO8 
-24v4 CitYNit 
Breaker Circuit breaker for power supply 
(, , ) Push-to-reset circuit breaker 
-24VDC output to PCB slots SO9, Sl 0, 
and Sl 1 
-24&i CirCUit 
Breaker Circuit breaker for power supply 
(, 2) Push-to-reset circuit breaker -24VDC output to PCB slots S12, S13, 
and S14 
POWER Indicator (13) Green LED Lights to indicate ON/OFF switch is se 
to ON (AC input power is applied to 
power supply) 
+5Vl Indicator (14) Green LED Lights to indicate presence of +5VDC 
output from power supply (for KSU’s 
upper PCB shelf backplane) 
,’ 
2-16  
						

							INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY1991 
TABLE2-F 
DK96MODELCONTROLSANDlNDlCATORS(continued) . 
CONTROL/lNOlCATOR 
(Figure 2-13 Item No.) TYPE OF COMPONENT DESCRIPTION 
Lights to indicate presence of +5VDC 
+5V2 Indicator 
(15) Green LED output from power supply (for KSU’s 
lower PCB shelf backplane) 
-5V Indicator (16) Green LED Lights to indicate presence of -5VDC 
output from power supply 
+5V1 Circuit 
Breaker 
-45V2 Circuit 
Breaker Push-to-reset circuit breaker Circuit breaker for power supply +5VDC 
(17) output to KSU’s upper PCB shelf 
Push-to-reset circuit breaker Circuit breaker for power supply +5VDC 
(18) output to KSU’s lower PCB shelf 
TABLE2-G 
PCBCONTROLSANDINDICATORS 
CONTROL/INDICATOR 
(Figure 2-14) TYPE OF COMPONENT DESCRIPTION 
Selects baud rate for TTY or modem; 
PIOU/PIOUS Baud Rate Two-position, spring-loaded, 
300 baud is selected when switch is in 
Selector (SW2) locking push-button switch 
locked position, 1200 baud is selected 
when switch is in released position 
Lights when 300 baud rate is selected, 
PIOU/PIOUS Baud Rate 
Indicator (CD4) Red LED by Baud Rate Selector (5); goes off when 
1200 baud rate is selected 
PIOU Page Background 
Trim potentiometer (VRI) Adjusts volume of 3-watt amplifier 
Music Volume Control for page background music feature 
PEMU E & M TIE Line 
Four red LEDs Light to indicate the applicable E & M TIE 
Indicators line is in operation 
PCTU “Heartbeat” 
Red LED Flashes to indicate operation 
Indicator (CD3) (l/4 second on-l/4 second off) 
PCTU/PCTUSI Music-on- 
Hold/Background Music Trim potentiometer Adjusts volume for music-on-hold/ 
Volume Control (VRI) background music feature 
PCOU/PCOU2 CO Line 
Indicators Four red LEDs Lights to indicate the applicable CO line 
is in operation (NOTE: CO line indicators 
will not light unless PCOU is connected 
to a CO line) 
2-17  
						

							INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY1991 
HHEU (Loud Ringing Bell/Headset Upgrade): 
Each electronic telephone may also be upgraded 
to provide a loud ringing bell interface and a 
modular headset jack by installing a loud ringing 
bell/headset upgrade assembly (Figure 2-l 6). 
The assembly consists of a small PCB (HHEU) 
which installs on the main PCB, inside the tele- 
phone, with a plug-in connector (HESC-65). 
l An external speaker/amplifier is directly con- 
nected to the upgraded phone. When the 
phone rings, the speaker sounds a loud tone 
that mimics the phone’s ring. See the HESB 
(external speaker) option. 
l Most standard headsets are compatible with 
the HHEU jack. 
NOTE: 
It is recommended not to equip the OCA 
feature when using an HHEU feature be- 
cause all voice paths are switched over the 
electronic telephone speaker during an OCA 
call. 
8.20 Direct Station Selection Console 
8.21 The Direct Station Selection (DSS) console 
is an optional dedicated answering station. It is 
normally used on systems with a heavy volume of 
incoming calls. However, a DSS console may be 
used with one of four designated electronic tele- 
phones. Both DK56 and DK96 models can support 
up to four DSS consoles. DK24 can also support 
up to four DSS consoles, if its controller PCB is the 
PCTU; however, a DK24 with a PCTUSI PCB can 
only support up to three DSS consoles. For more 
information on DSS console features, see the 
General Description. 
8.22 A DSS console must be assigned to a par- 
ticular station when the system configuration is 
defined in programming. All four DSS consoles 
can be assigned to asingle station, orfourdifferent 
DSS consoles may be assigned to four different 
stations (or any intermediate combination). The 
same DSS console may not be assigned to more 
than one station. 
NOTE: 
I 
8.23 Each DSS console requires two station ports One door lock control is supported by any of 
(circuits 7 and 8) on an electronic telephone Inter- the Option Interface PCBs (PIOU, or PIOUS, 
FlGURE2-16-HHEU 
face PCB (PEKU). Only one DSS console may be 
installed on a particular PEKU. DSS consoles can 
not be installed on PESU electronic telephone 
circuits 7 and 8. 
8.30 Toshiba-supplied Peripherals 
8.31 This section describes each peripheral item 
manufactured by Toshiba for use with the STRATA 
DK systems. Configuration and connection con- 
siderations are noted where applicable. 
8.32 Door Phone. Up to 12 door phones may be 
installed on any STRATA DK system. Five of the 
door phones may be associated with the door lock. 
When used in this manner, the door phone is 
mounted outside a building, next to a locked door 
whose entry requires screening. A door phone can 
also function as a sound monitor-any electronic 
telephone can call the door phone’s station num- 
ber and listen to sounds within its immediate area. 
Up to three door phones or two door phones and 
one door lock can be connected to each HDCB 
door phone control unit (Figure 2-17). See the 
General Description for more details. 
8.33 Door Lock Control. The door lock control 
allows a user to momentarily (three or six seconds) 
open an electronic door lock bv pressing a button 
(m) on an electronic telephone. 
- 
2-18  
						

							FIGURE 2-17-DOOR PHONE/LOCK CONTROL 
UNIT (HDCB) 
or PEPU) and/orjack B of each HDCBf for up 
to five door lock controls. 
8.34 External Speaker. 
The external speaker 
option is a 3-watt, 6 inch speaker with a built-in 3- 
watt amplifier. A +12VDC power supply (HACU- 
120) is provided with each external speaker, which 
connects to the speaker’s back panel. An 8’ cord is 
provided to plug in the power supply to a 117VAC, 
60 Hz outlet. The HESB has three applications: 
paging speaker, talk-back speaker, and amplified 
ringing bell. See the 
General Description for more 
application details. 
8.35 Voice Messaging System. The Messaging 
System helps a business significantly improve the 
effectiveness of its telephonecommunication. See 
the 
Genera/ Description for more feature details. 
8.36 The STRATA DKsystems use in-band DTMF 
tone signaling to interface with the INTOUCH 
system. The PSTU and/or PESU must be installed 
in the STRATA DK KSU in order to support the 
Voice Messaging System. 
8.37 INTOUCH interfaces with the STRATA DK 
system through the MDF using standard connec- 
tors. Each voice mail port requires a 1 -pair wiring 
connection to the MDF, and one port on the PSTU/ 
,, PESU, as well as special programming in the 
STRATA DK to act as a voice mail port. 
INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY 1991 
8.40 Customer-supplied Peripherals 
. 
8.41 The STRATA DK systems support many 
other commonly used peripheral devices which 
can be supplied by the customer. Examples of 
these devices are listed below, with theconnecting 
system PCB noted in parentheses: 
l Auto-attendant Device (PSTU and PESU) 
l Dictation Equipment (PSTU and PESU) 
l External Maintenance Modem (PIOU or PIOUS) 
l Facsimile (PSTU and PESU) 
l Local Maintenance Terminal (PIOU or PIOUS) 
l Modem (PSTU and PESU) 
l Paging System (PIOU or PIOUS or PEPU) 
l Radio Paging Equipment (PSTU and PESU) 
l Remote Maintenance Terminal (PIOU or IMDU) 
l Standard Telephones (PSTU and PESU) 
l SMDR Printer/Call Accounting Device (PIOU or 
PIOUS) 
l Voice Mail Messaging System (PSTU and PESU) 
9 RELEASE 3 INFORMATION 
9.00 The following contains Release 3 information 
relevant to Chapter 2’s contents. Descriptions of 
the new printed circuit boards, the new digital 
telephones, digital telephone upgrade upgrade 
options, and new Toshiba-supplied peripherals 
are provided. 
IO PRINTED CIRCUIT BOARDS 
(Release 3) 
10.00 PDKU (Digital Telephone Interface Unit): 
The PDKU provides eight ports for digital tele- 
phones and or Data Interface Units. It can also be 
configured to support a DDSS console. The PDKU 
does not need an EOCU (off-hook call announce 
upgrade unit) to support digital telephones equipped 
with off-hook call announce capability. Also, the 
PDKU cannot support a door phone control unit 
(HDCB), and/or BGM source interface. 
l The PDKU measures 7.5 by 5.5 inches (190 by 
140 mm) and connects to the KSU’s backplane 
with a 40-pin male connector. 
l The PDKU connects to the Main Distribution 
Frame (MDF) using a 25pair female amphenol 
connector. 
t Release 2 and higher 
2-19  
						

							INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY 1991 
10.01 PCTU3 (Common Control Unit): 
The lat- 
est version of the common control unit is PCTU3, 
which contains 
Release 3 software. The PCTU3 
can be installed in DK96, DK56, and DK24. Like 
earlier PCTU versions, the PCTU3 contains the 
system’s main microprocessor and microproces- 
sor bus, battery-protected memory circuits, time 
switch logic, conference logic, and system tones. 
The PCTU3 also has a music-on-hold/background 
music source interface, and connectors to mount 
an optional DTMF receiver PCB (CRCU) for DISA, 
TIE lines, standard telephones, and peripherals. 
l The PCTU3 measures 7.5 by 5.5 inches (190 by 
140 mm) and connects to the KSU’s backplane 
with a 40-pin male connector. 
11 PERIPHERAL EQUIPMENT 
11 .OO Digital Telephones (Release 3) 
11 .Ol 
There are twodigital telephones, the 1020SD 
and the 1020H, compatible with the STRATA DK 
systems. See the General Description for a more 
complete description of these phones. 
11 .I 0 Digital Telephone Upgrade Options 
(Release 3) 
11.11 
Digital telephones may be upgraded to 
transmit and receive simultaneous voice and data. 
They may also be upgraded with off-hook call 
announce, loud ringing bell, and headset capabil- 
ity. If the telphone is upgraded to transmit and 
receive simultaneous voice and data, it cannot be 
upgraded with any of the other options. However, 
it can be upgraded simultaneously with off-hook 
call announce and loud ringing bell or headset 
capability. 
11 .I2 Each digital telephone also features a 
standard modular handset cord, and is connected 
to the system with a single-pair modular line card 
(7 feet length cord included). No extra wire pair is 
required for the various upgrade options, but a 
custom external speaker cable (HESC-65A) is 
required for the loud ringing bell. 
PDIU-DI (Integrated data interface unit): Digital 
telephones may be upgraded with a PDIU-DI to receive and transmit simultaneous voice and 
data; data and voice calls can be made indepen- 
dently of each other. The PDIU-DI is easily 
installed, replacing the normal digtal telephone 
base. 
NOTES: 
1. The PDIU-DI will function with all slots, 
except slots 1 I w 14 in DK96. 
2. PDKU circuits 1 N 7can support PDIU-Dls. 
DVSU (Off-hookCall Announce Upgrade): Each 
digtal telephone may be upgraded to receive 
intercom handsfree answerback calls when the 
handset is off-hook by installing an OCA up- 
grade assembly. This assembly, called the 
DVSU, is installed inside the telephone base 
with plug-in connectors. 
HHEU (Loud Ringing Bell/Headset Upgrade): 
Each digital telephone may also be upgraded to 
provide a loud ringing bell interface and a modu- 
lar headset jack by installing a loud ringing bell/ 
headset upgrade assembly. The assembly 
consists of a small PCB (HHEU) which is in- 
stalled inside the telephone base with plug-in 
connectors. 
11.20 Digital Direct Station Selection Console 
(Release 3) 
11.21 
The Digital Direct Station Selection Con- 
sole (DDSS) is an optional, dedicated answering 
station incorporating a busy lamp field, and it can 
be used with electronic or digital telephones. It is 
normally used on systems with a heavy volume of 
incoming calls. A DDSS console may be used with 
one of four designated telephones. If equipped 
with a PCTU3, DK96, DK56, and DK24 can sup- 
port up to four DDSS consoles (DK24, if equipped 
with the PCTUS, will not support DDSS consoles). 
For more information on DDSS console features, 
see the General Description. 
11.22 A DDSS console must be assigned to a 
particular station when the system configuration is 
defined in programming. All four DDSS consoles 
can be assigned to asingle’station, orfourdifferent 
DDSS consoles may be assigned to four different 
2-20  
						

							PARAGRAPH 
1 
2 
3 
3.00 
3.10 
4 
5 
5.10 
I 
6 
7 
7.10 
TABLE 
3-A 
3-B 
3-c 
FIGURE 
3-l 
3-2 
INSTALLATION-SITEREQUIREMENTS 
SECTION 200-096-203 
FEBRUARY1991 
TABLEOFCONTENTS 
. 
SUBJECT 
PAGE 
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
3-l 
INPUT POWER REQUIREMENTS . . . . . . . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-l 
SITE CONSIDERATIONS 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
3-l 
Clearance and Location Requirements . . . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-l 
Electrical/Environmental Requirements and Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-l 
CABLE LENGTHS/NETWORK REQUIREMENTS 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 
GROUNDING REQUIREMENTS .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
3-2 
Earth Ground Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
3-2 
SITE CONSIDERATIONS (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
3-5 
GROUNDING 
REQUIREMENTS (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
3-5 
Second Ground Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
3-5 
TABLE LIST 
TITLE 
PAGE 
LOOP REQUIREMENTS . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 
NETWORK REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 
SUMMARY OF ELECTRICAL/ENVIRONMENTAL CHARACTERISTICS . . . . . . . . . . . . . . 
3-4 
FIGURE LIST 
TITLE 
PAGE 
DK24/56 MINIMUM CLEARANCE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-l 
DK96 MINIMUM CLEARANCE 
REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-l 
I 3-3 KSU GROUNDING DIAGRAM 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 
3-i  
						

							1 GENERAL 
1.00 
This chapter defines the installation site re- 
quirements necessary to ensure a proper operat- 
ing environment for STRATA DK systems. Also 
included are input power requirements, site con- 
siderations, cable lengths/network requirements, 
and grounding requirements. 
2 INPUT POWER REQUIREMENTS 
2.00 The systems require an input power source 
of 117VAC nominal (85VAC N 135VAC), 50/60 Hz, 
15 amps. The AC outlet must be dedicated to 
system use, fused, and grounded (refer to Para- 
graph 5). 
2.01 To avoid accidental power turn-off, it is recom- 
mended that an ON/OFF wall switch not be used on 
this dedicated AC circuit. 
2.02 A reserve power source (two customer- 
supplied l2-volt batteries) may be connected to 
the system to serve as a power failure backup. 
3 SITE CONSIDERATIONS 
3.00 Clearance and Location Requirements 
3.01 The KSU may be table-top or wall mounted. 
Figure 3-l (DK24/56) and Figure 3-2 (DK96) show 
the minimum clearance requirements for both 
mounting options. 
TOP VIEW 
DK24/56 UNIT ‘f” 
- I 6” b 
I 
I 
d 2” - 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I I 
2” I+ I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
FRONT WORK SPACE 
APPROXIMATELY 36” 
t 
I 
FIGURE 3-l-DK24/56 MINIMUM 
CLEARANCE REQUIREMENTS INSTALLATION-SITE REQUIREMENTS 
SECTION 200-096-203 
FEBRUARY 1991 
TOP VIEW l/2” DK96 UNIT J 
FRONT WORK SPACE 
APPROXIMATELY 36” 
+ 
I-ItilJKt 3-Z-UK96 MINIMUM 
CLEARANCE REQUIREMENTS 
3.02 The following conditions must be considered 
when selecting a location for the KSU: 
The location MUST BE: 
l Dry and clean 
l Well ventilated 
l Well illuminated 
l Easily accessible 
The location MUST NOT BE: 
l Subject to extreme heat or cold 
l Subject to corrosive fumes, dust, or other air- 
borne contaminants 
l Subject to excessive vibration 
l Next to television, radio, office automation, or 
high frequency equipment 
NOTE: 
See Paragraph 6 for more site considera- 
tions. 
I 
3.03 If reserve power is to be installed, the batter- 
ies will require a well-ventilated location close 
(within nine feet) to the KSU (the Toshiba-supplied 
battery cable is 9 feet in length). 
3.10 Electrical/Environmental Requirements 
and Characteristics 
3.11 
The electrical/environmental requirements 
and characteristics for each system are provided 
in Table 3C. 
3-1  
						

							INSTALLATION-SITE REQUIREMENTS 
SECTION 200-096-203 
FEBRUARY 1991 
4 CABLE LENGTHS/NETWORK 
REQUIREMENTS 
4.00 Table 3-A lists system loop requirements. 
Table 3-B lists system network requirements. The 
KSU must be located to allow compliance with the 
specified requirements. 
5 GROUNDING REQUIREMENTS 
5.00 The system requires a solid earth ground for 
proper operation. Failure to provide such a ground 
may lead to confusing trouble symptoms and, in 
extreme cases, system failure. The ground con- 
nection is provided by the “third wire ground” from 
the commercial power outlet. 
NOTE: 
The ground must be dedicated. 
5.01 At most installations in the continental United 
States, the ground provided by the “third wire 
ground” at the commercial power outlet is satisfac- 
tory for system requirements. However, in a small 
percentage of installations, this ground may be 
installed incorrectly. Before installing a system, 
test the third wire ground for continuity by either 
measuring the resistance between the third prong 
terminal (earth ground) and a metal cold water 
pipe (maximum: 5 ohms), or by using a commer- 
cially available earth ground indicator. 
5.02 If neither procedure is possible, perform the 
earth ground test procedure in Paragraph 
5.10. 
I 
NOTE: 
See Paragraph 7 for more grounding re- 
quiremen ts. 
5.10 Earth Ground Test 
WARNING! 
Hazardous voltages that may cause death 
or injury are exposed during the folio wing 
test. Use great care when working with AC 
power line voltage. 
1) Obtain a suitable voltmeter, and set it for a 
possible reading of up to 250 VAC. 2) Connect the meter probes between the two 
main AC voltage terminals (white and black 
wires) on the wall outlet. The reading obtained 
should be between 100 - 120 VAC. 
3) Move one of the meter probes to the third 
terminal (green wire ground). Either the same 
reading or a reading of zero volts should be 
obtained. 
4) If the reading is zero volts, leave one probe on 
the ground terminal and move the other probe 
to the second voltage terminal. 
CAUTION! 
If a reading of zero volts is obtained on 
both voltage terminals (white wire to green 
wire, black wire to green wire), the out/et is 
not properly grounded. Omit steps 5 and 
6, and proceed directly to step 7. 
5) If a reading of zero volts on one terminal, and a 
reading of 100 - 120 VAC on the other terminal 
is obtained, remove both probes from the out- 
let. 
6) Set the meter to the “OHMS/Rx1 ” scale. Place 
one probe on the ground terminal, and the other 
probe on the terminal that produced a reading 
of zero volts. The reading should be less than 1 
ohm. 
CAUTION! 
If the reading is more than one ohm, then 
the outlet is not adequately grounded. 
7) If the above tests show the outlet is not properly 
grounded, the condition should be corrected 
(per Article 250 of the National Electrical Code) 
by a qualified electrician before the system is 
connected. 
3-2  
						

							INSTALLATION-SITE REQUIREMENTS 
SECTION 200-096-203 
FEBRUARY1991 
TABLE3-A 
LOOPREQUIREMENTS 
Device Description 
PEKU 
(ckts 1 w 8) Electronic 
P&J’ telephone, 
door phone/ 
(ckts 5 N 8) control boxes 
PEKU 
(ckts 7 & 8) DSS consoles 
Max Loop Resistance 
Max Distance from 
(Including Device) KSU to Device 
40 ohms 1000 ft. (303 m) 
20 ohms 
500 ft. (152 m) 
Number of 
Wire Pairs 1 
All need 2-pair. 
EKTs which 
receive OCA 
calls need 
3-pair.’ 
PSTU 
(ckts 1 * 8) 
P&J 2 
(ckts 1 & 2) 
PDKU 
(ckts 1 N 8) 
PDKU 
(ckt 8) 
PDKU 
(ckts 1 N 7) 
PDKU 
(ckts 1 w 7) Standard 
telephones, 
voice mail, 
auto attendant, 
etc. 
Digital 
telephones 
DDSS consoles 
PDIU-DI 
PDIU-DS 300 ohms 
40 ohms 
40 ohms 
40 ohms 
40 ohms Approx. 3000 ft. (909 m) 
with 150 ohm device. See 
manufacturer’s product 1 -pair 
specifications for exact 
resistance of device. 
1000 ft. (303 m) 1 -pair 
1000 ft. (303 m) 
1 -pair 
Shares digital 
1000 ft. (303 m) 
telephone 
wire-pair? 
1000 ft. (303 m) 1 -pair3 
NOTES: 
1. Use 24 A WG twisted pairs. 
2. PESU circuits 3 and 4 are not used. 
3. Two-pair may be required to achieve maximum range (see Chapter 9). 
TABLE3-B 
NETWORKREQUIREMENTS 
TOSHIBA 
Circuit Board 
Pcou/Pcou2 
(Loop Start Line) 
Facility 
Interface Code 
02LS2 
Network 
Jack 
RJl4C 
Ringer 
Equivalence 
0.26 
PEMU 
(Type I, TIE Line) 
2-wire TLllM 
R2JEX N/A 
4-wire 
PSTU/PESU (circuits 1 & 2) 
(Off-premises Line) OLl3A RJ21 X 
N/A 
3-3