Toshiba Strata S Electronic Key Telephone System Installation And Maintenance Manual

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01. GENERAL I 
01.01 This section describes the installation 
procedures necessary to ensure proper operation 
of the 
Strata S system. 
02 PACKING 
02.00 Inspection 
02.01 
When a Strata S system is received, 
examine all packages and carefully note any vis- 
ible damage. If any damage is found, bring it to the 
attention of the delivery carrier and make the 
proper claims. 
02.02 Check the number of cartons and the 
contents of the Strata S shipment against the 
purchase order and packing slip. If it is determined 
that any cartons are missing, contact your delivery 
carrier immediately. If it is determined that any 
equipment within a carton is missing, contact your 
Toshiba supplier immediately. 
02.03 After unpacking (prior to beginning the 
installation), inspect all equipment for damage. If 
any damage isdetected, contact your delivery card 
rier immediately. If possible, retain all original the 
packing material. 
CAUTION: 
When handling (installing, removing, exa- 
mining, etc.) a printed circuit board. do not 
touch the back (soldered) side or the edge 
connector. Always hold a PCB by its edge. 
03 
MKSU LOCATION REQUIREMENTS 
03.00 Power Requirements 
03.01 
The Strata S MKSU requires 24 
VDC. This is provided by the power supply (MPSA), 
which in turn requires power from a grounded 
115 VAC outlet. The outlet should be protected 
1 separately and rated at 15 amps. 
03.02 The 54-inch cord provided to connect the 
MPSA to the MKSU dictates the relative location 
of the power supply. The power supply is also 
equipped with a 10-h. AC power cord. 
03.03 Two power supplies are available; 
MPSA-200 and MPSA-512. The MESA-200 is 
used when battery backup power is required. 
03.04 An optional battery backup unit (PBBU) is 
available for the MPSA-200. It is a printed circuit 
board that mounts inside the power supply hous- 
INSTAUATION 
SECTION 100-003-200 
JULY 1994 
ing. The recommended battery pack, which is 
customer-supplied, consists of two maintenance- 
free automobile 12 VDC batteries (maximum: 80- 
amp/hour rating). With the optional PBBU assem- 
bly installed, all functions of the Strata S 
system will continue to operate for several hours 
after a loss of normal electrical power (the actual 
time period is in direct ratio to the type and size of 
batteries selected). No calls will be disconnected 
during switch-over to battery power. 
03.10 Ventilation Requirements 
03.11 Sufficient ventilation should exist to allow 
dissipation of the -heat generated by the power 
supply and MKSU. 
03.20 Environmental Factors 
03.21 
Humidity at the MKSU location should be 
within 20 - 80% (without condensation), and the 
temperature should be relatively constant within a 
range of 32 - 122OF(O- 5OOC). In addition, expos- 
ing the MKSU to an excessive amount of dust and 
airborne chemicals may cause a failure-take this 
into consideration during site selection. 
03.30 Cabling Considerations 
03.31 
The MKSU must be located so that all 
stations are within loo0 cable feet (305 m) of it. 
Acceptable cable 
is 22 or 24 AWG inside tele- 
phone station 
cable, jacketed but not shielded, 
having two or more twisted wire pairs. 
04 MKSU MOUNTING 
04.00 Wall Mounting the MKSU 
04.01 
To mount the MKSU on the wall perform 
the following steps: 
1) 
2) 
3) 
4) Remove both side covers from the MKSU (Fig- 
ure 1). 
Hold the MKSU against the wall in its planned 
location and mark the screw locations through 
the centers of the two keyholes on the upper 
sides of the MKSU. 
Lay the MKSU aside for the moment and start 
two screws into the wall at the marked loca- 
tions. Use l-W-inch panhead wood screws 
and stop when they have penetrated to half -. 
their depth. c* 
Hang the MKSU on the two screws and start 
two additional screws in the lower two holes. 
Tghten all four screws. 
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							INSTALLATION 
SECTION 
100-003-200 
JULY 1994 
5) Knockouts are provided on the top and bottom 
of the side covers to permit cables to enter the 
MKSU. Remove the appropriate knockouts. 
FIGURE 1 -SIDE COVERS 
6) Reinstall the side covers. 
7) Refer to Section 100-003-250, 
MPSA-512 
Installation 
(or Section 100-003-255, MPSA- 
200 installation), 
and follow the appropriate 
instructions for installing the selected MPSA. 
A completed installation with an MPSA-512 
should aooear as shown in Fiaure 2. 
s--s 
- 2 
- . 
FIGURE 2-WALL MOUNTED MKSU 
05 PRINTED 
CIRCUIT BOARD DESCRIPTIONS 
05.01 
A maximum of five PCBs can be installed 
‘. 
in the MKSU. A maximum of one card of each type 
can be installed in the system (Figure 3). They are: 
l MMAU (KSU Main Unit) 
l ACOU (Central Office Unit) 
l Two types of ACOU are available: 
a) MF-used when DTMF outpulsing is 
required. 
b) DP-used when rotary dial outpulsing - 
is required. 
l AMOU (Music-on-hold Source) 
l Installed when Music-on-hold feature is 
required without an external music source. 
0 APFU (Power Failure Transfer Unit) 
l Provides a switch-over of all CO/PBX lines 
to dedicated, customer-provided standard 
telephones upon power failure. 
l AEPU (3-watt External Page Amplifier Unit) 
l Installed when the External Page feature is 
required with no external PA amplifier. 
The MMAU and ACOU PCB are factory-installed 
in the MKSU. 
FIGURE 3-MKSU WITH PCBs 
06 OPTION SELECTION 
06.01 The external pag? output appears at the -- 
terminals labeled 8/6OOkn the MKSU right side 
panel (Figure 4). The output impedance can be -. 
selected to be either 8R or 6OOR. and is facton/- : 
set for 6OOR. In the 6OOR mode an external PA 
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							_.. 
amplifier is required. Eight ohms is used when the 
AEPU PCB is installed. The output will then be via 
a 3-watt amplifier on the AEPU. 
FIGURE 4 
EXTERNAL PAGE TERMINALS 
06.02 External page options are selected using 
the SW2 switch located on the MMAU (Figure 5). 
Decide if the 8 or 6DOQ impedance is required and 
then make the selection by positioning SW2 to 
“8” or 
FIGURE 5-MMAU SWITCHES 
06.10 Music-on-hold Option Selection 
06.11 A customer-provided MOH program 
source or the optional AMOU PCB may be used. 
The AMOU provides a source of synthesized 
music. 
06.12 The MOH option is selected using the 
‘.. INSTALlATlON 
SECTION 100-003-200 
JULY 1984 
SW3 switch located on the MMAU (Figure 5). 
SW3 is factory-set in the MOH position for use of 
an external program source. Move SW3 to the 
side marked MOU if the AMOU PCB is to be used. 
07 PCB INSTALLATION 
07.00 General Information 
07.01 The MMAU and ACOU PCBs are factory- 
installed in the MKSU. 
07.02 If any of the optional PCBs (AEPU, AMOU 
or APFU) are required, the MKSU top cover must 
be removed as follows: 
1) Remove both side covers by swinging them to 
the left or right, as necessary, and then lifting 
them straight up. 
2) Remove the three screws from the MKSU left 
side per Figure 6A. 
3) Remove the two cable straps and three screws 
from the MKSU right side per Figure 6B. 
FIGURE 6-MKSU COVER SCREWS 
4) Lift the MKSU cover,&. 
07.10 AMOU (MOH Source) Installation 
07.11 Secure the AMOU to the lower part of the 
MKSU right side panel with the two screws pro- 
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							INSTALLATION 
SECTION 100-003-200 
JULY 
1994 
v.. 
vided, as shown in Figure 7. 
FIGURE 7-MOUNTED AMOU PCB 
07.12 
Connect the AMOU cable to PB on 
the MMAU PCB Der Figure 8. 
FIGURE 8 
AMOWMMAU CABLE CONNECTION 
07.20 APFU (Power Failure Transfer Unit) 
Installation 
07.21 
Secure the APFU to the upper part of the 
MKSU right side panel with the two screws pro- 
vided, as shown in Figure 9. 
07.22 Connect the 8-pin jack (from the OPL 
jack) into the 
Pl plug on,the APFU (Figure 10). 
FIGURE g--MOUNTED APFU PCB 
07.23 Refer to Figure 10 and connect the four 
2-wire jacks from the APFU to their respective 
plugs on the top and right side of the ACOU as 
follows: 
APFU ACOU 
WHT, Bu( (Power) P8 
RED, GRN (CO 1) PS 
YEL BU( (CO 2) PlO 
BLU, WHT (CO 3) Pll 
FIGURE lo-APF&j CONNECTIONS --.- 
07.30 AEPU (External Page Unit) Installation 
07.31 
The AEPU is installed in the position 
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							e.. 
shown in Figure 11. Mount the PCB on the lo-pin 
connectors P5 and P6 (note the “6” arrow on the 
AEPU and pin alignment when positioning the 
PCB) and secure it with the two screws provided 
(Figure 11). 
FIGURE 
1 l-MOUNTED AEPU 
07.32 Note the location of the volume control in 
Figure 11. It will be necessary to leave the MKSU 
cover off until this has been adjusted per Para- 
graph 
11.30. 
07.40 MKSU Cover Installation 
07.41 
Reinstall the MKSU top cover in the 
reverse order the instructions in Paragraph 07.02. 
08 POWER CONNECTION 
08.00 Cable Connection 
08.01 
Plug the power supply into a 115 VAC 
outlet and check its output voltage to be sure it is 
between 23.2 - 28.2 VDC. If the voltage is not 
within these limits, replace the power supply 
before proceeding. 
IMPORTANT: 
On the MPSA-512, verify that the power 
switch is ON-it will be illuminated 
08.02 Disconnnect the power supply from the 
115 VAC outlet. Remove the plastic protective 
cover from the power terminal strip on the MKSU 
left side panel, and, with the supplied cord, con- 
nect the “+24V”, “OV” and “G” terminals on the 
power supply to the corresponding terminals on 
the MKSU. Secure the DC cord to the MKSU using 
the plastic cable clamp provided. INSTALLATION 
SECTION 100-003-200 
JULY 1984 
IMPORTANT: 
On the MPSA-200 and the MKSU. these 
terminals are titled 
**+24V’-, ‘OV”qd “E “. 
respectively. 
08.03 The Toshiba Strata S electronic key 
telephone system requires a solid earth ground on 
the “E” terminal on the MKSU left side panel. 
Failure to provide such a ground may lead to con- 
fusing trouble symptoms in the system and, in 
extreme cases, circuit board failure. In most instal- 
lations, within the continental United States, the 
ground provided by the “third wire ground” at the 
commercial power outlet will be satisfactory for all 
Strata S requirements. However, in a small 
percentage of installations this ground may be 
installed incorrectly. Therefore, prior to installing a 
Strata S system, the third wire ground must 
be tested for continuity by either measuring the 
resistance between the 3rd prong terminal (earth 
ground) and a metal cold water pipe, or by using a 
commercially available earth ground indicator. If 
neither procedure is possible, then the test proce- 
dures outlined in Paragraph 08.10 should be 
performed. 
. 
WARNING! 
Hazardous vottage that may cause death or 
injury is exposed during the following test. 
Use great care when working with AC 
po werline voltage. 
08.10 Test Procedure 
1) 
2) 
3) 
4) 
5) Obtain a suitable voltmeter and set it for a 
possible reading of up to 250 VAC. 
Connect the meter probes between the two 
main AC voltage points on the wall outlet. The 
reading obtained should be 90 - 130 VAC. 
Move one of the meter probes to the 3rd prong 
terminal (GND). Either the same reading or a 
reading of 0 volts should be obtained. 
If the reading is OV, leave one probe on the 
GND terminal and move the other probe to the 
2nd voltage terminal. If a reading of OV is 
obtained on both voltage terminals, the outlet 
is not properly grounded. Omit steps 5 - 7, 
and proceed directly to step 8. 
. 
If a reading of OV onone terminal and a read- 
ing of 80 - 130 VAC on the other terminal is 
not obtained, the outlet is not properly 
grounded. Omit steps 6 & 7, and proceed 
directly to step 8. 
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							INSTALLATION 
SECTION 100-003-200 
JULY 1994 
-.. - 
6) If a reading of OV on one terminal and a read- 
ing of 90 - 130 VAC on the other terminal is 
obtained, remove both probes from the outlet. 
7) Set the meter on the “OHMS/Rxl” scale, 
place one probe on the GND terminal and the 
other probe on the terminal which produced a 
reading of OV. A reading of less than IS2 
should be obtained. If a reading of more than 
1 R is obtained, the outlet is not adequately 
grounded. 
8) If the above tests show that the outlet is Strata S system is connected. 
08.11 Ensure that the power switch on the 
MKSU is 
OFF, then plug the power supply-into the 
115 VAC outlet and measure the voltage at the 
MKSU input terminals. Correct any problems 
before proceeding. 
09 CABLE CONNECTIONS 
09.00 Main Distribution Frame (MDF) Con- 
figuration 
improperly grounded, that condition should be 09.01 One 66ML50 split connection block (Fig- 
corrected by a qualified electrician (per Article ure 12) is recommended as the Strata Smain 
250 of the National Electrical Code) before the distribution frame (MDFL 
MKSU 
-L-  115VAC 
P-pair 2-0ai.I 
FIGURE 12-SYSTEM DIAGRAM 
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							-‘09.02 A 25-pair &ale-amphenoliended cable is 
connecteddirectlytothefemale-amphenol-connec- 
tor on the riqht side connector panel (Figure 13). 
FIGURE 13-MKSU CABLE CLAMPING 
09.03 Secure the cable to the panel using the 
plastic strap and cable clamp provided. 
09.04 Use the industry-standard color code 
sequence and terminate the cable on the MDF 
block as shown 
in Figure 14. 
09.10 Station Cable Connections 
09.11 
Terminate the individual 2-pair station 
cables consecutively on the MDF block; attach 
them to the side opposite the MKSU cable. Use 
bridging clips to connect the MKSU cable pairs to 
the station cable pairs. Refer to Figure 14 for a 
completed MDF block. 
09.12 The cables used for station wiring should 
be two twisted pair. 
09.13 The overall length of the cable run must 
not exceed 1 DO0 ft. (305 m) for 24 AWG wire. 
/MPORTANT: 
When installing station cable, do not run 
parallel to and within 3 ft. of an AC po wer 
line. Such power lines should be crossed at 
right angles (9OO) only. 
09.14 At the station locations, terminate the 
station cable in a conventional 4- or 6-conductor 
modular station connector to accommodate the 
modular line cord from the EKT. The standard 
modular EKT cord length is 7 ft., while the maxi- 
mum allowed length is 25 ft. 
‘k INSTAUATION 
SECTlON 100-003-200 
JULY 1994 
09.15 Figure 14 shows the EKT wiring ar- 
rangement. 
09.16 The various manufacturers of modular 
station blocks have employed different color codes 
to indicate the sequence of pairs in their blocks. 
However, the color code most commonly used is 
shown in Figure 14. Verify the configuration of 
your modular blocks before connecting the station 
cables. 
09.20 intercom Code Assignment 
7 
09.21 Intercom codes are assigned perman- 
ently to specific cable appearances in Strata 
S. Make sure the station cables are connected to 
the proper terminals (Figure 14). 
NOTE: 
White and blue (T3 and R3/ are not used for 
Strata S station line connectors. 
09.30 CO Line Connection 
09.31 
The CO/PBX tines are introduced into 
the Strata Ssystem via a 6-wire modular line 
cord (no longer than 25 ft.) conneqted directly to a 
jack on the right side panel. The opposite end df 
the cord then terminates directly into a locally- 
rovided RJ-25C jack (Figure 15). 
TO CO/PBX 
n W a 
I -a 
3 
-a 
z 
ki 
-? a 
4 
-- 
RJ-25C 
JACK 
r -w--v------- 1 6-POS. 
\T3 T2 Rl Tl R2 R3 / 
TO MKSU 
FIGURE 15-RJ25C WIRING 
09.32 Secure the modular cord to the panel 
using the provided plastic cable ‘clamp. 
10 EKT INFORMATION 
10.00 General . 
10.01 Four different Electronic Key Telephones 
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							lNSTALl.ATlON . 
SECTION 100-003-200 
JlJlv1994 
: I-pair JACKETED 
STATION CABLE 
L 
-El-l- Ynbu” 
%R 
“7r: 
-c 
--i BRIDGING 
-7 CLIPS 
idOT USED 
I 
66M160 SPLIT BLOCK MODULAR STATION BLOCK  TO MKSU 
II 
5432 
- . 
I .... J 
MODULAR 
CORD STATION 
l-IcjUHt 14-MUi- tK I WlHlNIj 
(EKTs) may be used in the Strata system. The 
standard EKT (Figure 16). known as the 1 O-key 
“S” EKT, is equipped with three permanentlyded- 
icated keys and ten line/feature keys. The three 
optional (full speakerphone) EKTs are equipped 
with four permanently dedicated keys and either 
10 or 20 feature keys: lo-key EKT (Figure 17). 
1 O-key Busy Lamp Field (BLF) EKT (Figure 18) and 
20-key EKT (Figure 19). 10.02 The lO-key S EKT measures: 
Height: 3.5 inches (88.9 mm) 
Width: 6.0 inches (152 mm) 
Depth: 9.0 inches (229 mm) 
I. - 
and is equipped with 13 line end feature keys in 
addition to its push-button dial pad. Three of the 
keys are utilized for central offiie/PBX lines, one 
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							I ; ‘. _. 
-. 
I 
FIGURE 16-l O-key “S” EKT 
‘.. INSTALLATION 
SECTION 100-003-200 
JULY 1984 
I 
FIGURE 17-lo-key SPEAKERPHONE EKT 
FIGURE 18-BLF EKT FIGURE 19-20-key EKT 
for intercom access, and the remaining keys for 
feature operation. 
10.03 All three optional EKTs share the same 
external dimensions: 10.05 The optional 1 O-key BLF EKT provides the 
same features as those listed in Paragraph 10.04, 
plus an LED indication on which stations are in 
use. 
Height: 4.0 inches (102 mm) 
Width: 8.8 inches (224 mm) 
Depth: 9.1 inches (230 mm) 
Each is equipped with either 14 or 24 line and 
feature keys in addition to a push-button dial pad. 
Again, three of the keys are utilized for CO/PBX 
lines, one for intercom access, and the remaining 
keys are used for feature operation. 
10.06 The optional 20-key EKT provides the 
same featuresas those listed in Paragraph 10.04, 
plus ten additional feature keys. That is, three 
CO/PBX keys, one intercom key, and 16 feature 
keys that may be used as automatic dialing keys, 
direct station selection (DSS) keys, etc. 
10.07 System software assignments permit 
some variation to the feature keys on all four EKTs 
(see Figure 20 for key configurations). 
10.04 The optional lo-key EKT provides the 
same programmable feature keys as the standard 
EKT, plus a microphone control key, handsfree 
answerback and full speakerphone capability. 10.08 All EKTs feat_u_re modular handset cords -. 
and are connected to the system via four-conductor 
modular line cords. In addition, all EKTs may be 
used at any or all stations. 
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							INSTALLATION 
SECTION 100-003-200 
JULY 1994 . - 
PAU 
H - 
FIGURE 20-KEY LAYOUT 
10.10 1 O-key S EKT Wall Mounting 
10.11 An optional ‘SKWM” kit is required to 
convert the IO-key S EKT for wall mounting. The 
“SKWM” 
kit consists of a metal wall bracket and a 
handset hanger kit. 
10.12 TheEKTmaybemountedonawallorany 
other flat, vertical surface to which the wall 
bracket can be secured. When selecting the 
mounting site, consider the EKT weight and the 
additional stresses to which the mounting will be 
subjected. 
10.13 Mounting screws or mollies, appropriate 
for the surface on which the telephone is to be 
secured, must be provided by the installer. 
10.14 With the wall bracket the “S” EKT can be 
mounted to any suitable vertical surface or to a 
telephone outlet plaster ring (see Figure 21). 
Secure the wall bracket to the desired wall site, 
and use a spirit level, if necessary, to make certain 
the bracket is level. 
10.15 The EKT is placed on the wall bracket by 
1 
FIGURE 21 -WALL MOUNT BRACKET 
mating the bracket’s four hooks (A-Figure 21) 
L with the four slots on the EKT base (B-Figure 22) 
and sliding the EKTdownward. The EKT is secured 
in position by bending the two tabs (C-Figure 21) 
forward in order to orevent ubward motion of the. I. 
EKT. 
I 
FIGURE 22-BRACKET SLOTS 
10.16 
Route the tail cord as shown in Figure 23. _. 
10.17 Install the handset hanger kit per Para- 
graph 10.30. 
10.20 Optional EKT Wall Mounting 
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