Toshiba Strata E Electronic Key Telephone System Installation And Maintenance Manual

							INSTALLATION INSTRUCTIONS 
SECTION 500-036-200 
JANUARY 1988 TOSHIBA SYSTEM PRACTICES 
ELECTRONIC KEY TELEPHONE SYSTEM 
INSTALLATION INSTRUCTIONS 
TABLE of CONTENTS (continued) 
, 
PARAGRAPH SUBJECT PAGE 
09.80 
09.90 
10 
10.00 
10.10 
10.20 
10.30 
10.40 
10.50 
10.60 
10.70 
10.80 Amplified Conference ............................................. 31 
HESB 
EO”,pMENT’b6NNECi,ONS’:::::::::::::::::::::::::::::::::‘:-::::::: 31 
Wiring Connections ................................................ 33: 
MOH/BGM Source ............................................... 33 
External Paging Connections ....................................... 34 
Direct External Speaker Connection ................................ 34 
External Amplifier ................................................. 34 
Talkback Amplifier ................................................ 35 
Background Music ................................................ 
Volume Setting Sequence ......................................... E 
Night Relay Service (Vle only) ..................................... 36  
						

							rOSHlBA SYSTEM PRACTICES 
.LECTRONIC KEY TELEPHONE SYSTEM 
NUMBER 
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I) INSTALLATION INSTRUCTIONS 
SECTION 500-036-200 
JANUARY 1988 
1NSTALIATlON INSTRUCTIONS 
ILLUSTRATION LIST 
TITLE PAGE 
SCCU/VCCU Battery Strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
HKSU Side Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -: 
HKSU Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
HPFB Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a 
HPBU Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . d- 4 
HKSU Cover Removal ............................................... 
SCOU and SPFU Locations ........................................... 
VCOU Location ..................................................... 
Se SSTU and SVCU Locations ....................................... 
Vle SSTU and SVCU Locations ...................................... 
Se/Vie SEPU and SMOU Locations .................................. 
Se/Vie SDTU Location .............................................. 
STMU Location ..................................................... 
EKT Wiring ......................................................... 
RJ-11 C/RJ-25C Color Code ......................................... 
Se/Vie HKSU Right Side Panel ...................................... 
SCCU/VCCU Battery Strap .......................................... 
Se/Vie Initializing Switches ......................................... 
HVSU Location ..................................................... 
Removing EKT Base ................................................ 
EKT Mounting Holes ................................................ 
EKT Wire Routing .................................................. 
Handset Hanger .................................................... 
Carbon Handset Modification ........................................ 
Off-hook Call Announce Functional Block Diagram .................... 
HCNB Connections .................................................. 
HIOB Functional Block Diagram ...................................... 
HIOB Wiring Diagram ............................................... 
HIOB Switches ..................................................... 
HOXB Connection Straps ............................................ 
HOXB Wiring ....................................................... 
HDCB Connection Straps ............................................ 
HDCB/MDFB Connection ............................................ 
HOLB Wiring ....................................................... 
HSMB/Printer Cabling .............................................. 
HSMB Straps and Switches ......................................... 
HSMB Buttons 
SMDR Printout E~a*mpie’(Outgoing ‘Chili - : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 
SMDR Printout Example (Incoming Call) .............................. 
HMDB External Switches ............................................ 
HMDB Wiring ...................................................... 
HMDB Installation .................................................. 
HMDB Internal Switches ............................................ 
Amplified Conference Functional Block Diagram ...................... 
HESB Back Panel ................................................... 
Modular-to-Terminal Strip Internal Connections ....................... 
Terminal Strip ...................................................... 
Impedance Switch .................................................. 
External Amplifier Hook-up .......................................... 
Volume Setting Controls ............................................ 
Relay Contacts ....................................................... 
Night Relay Strapping 
.......................................... . ..... 
.6 6 
7 
7 
8 
8 
9 
9 
10 
10 
10 
11 
11 
13 _ 
13 
14 
14 
14 
15 
17 
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18 
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-Ill-  
						

							01 GENERAL 
This section describes the installation 
es necessary to ensure proper opera- 
?e STRATA Se & Vle systems. lnstalla- 
:edures for the two systems vary only 
,n to size; all other factors are the same. 
02 
PACKING 
Inspection 
When a system is received, examine all 
s and carefully note any visible damage. 
image is found, bring it to the attention 
delivery carrier and make the proper 
Check the number of cartons and the 
; of the shipment against the purchase 
!d packing slip. If it is determined that 
ens are missing, contact your delivery 
Imediately. If it is determined that any 
nt within a carton is missing, contact 
;hiba supplier immediately. 
After unpacking (prior to beginning the 
or aspect all equipment for damage. 
image is detected, contact your delivery 
mmediately. If possible, retain all the 
packing material. 
CAUTION! 
handling (installing, removing, exam- 
etc.) a printed circuit board, do not 
ATA Se 
STRATA Vie 
E 
E 
IRE l-SCCU/VCCU BAITERY STRAP INSTALLATION INSTRUCTIONS 
SECTION 500-036-200 
JANUARY 1968 
touch the back (soldered) side or the pin 
connector. Always hold a PCB by its edge. 
02.04 When packing or storing a SCCU (or 
VCCU), ensure the following: 
e Do not use plastic or any type of conductive ’ 
material for packing a SCCU (or VCCU). Use 
plain paper. 
.*- 
CAUTION! 
Conductive packing material may cause 
the internal backup battery to discharge 
and damage the PCB. 
02.05 Whenever storing or shipping, always 
ensure that the battery strap is in the OFF po- 
sition (Figure 1). The SMAU/VMAU is a “host” 
board for the SCCUNCCU (which is required) 
and they are shipped as an assembled unit. 
NOTE. 
Always make sure the battery strap on the 
SCCU/VCCU is in the ON position prior to 
instalation. 
If not, the SET LED on the 
HKSU cannot operate. 
03 HKSU REQUIREMENTS 
03.00 Cabling Considerations 
03.01 The HKSU must be located so that all 
stations are within 1,000 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 (three 
pair required for off-hook call announce). 
03.10 Environmental Factors 
03.11 Sufficient ventilation should exist to al- 
low dissipation of heat generated by the power 
supply and HKSU. 
03.12 Humidity at the HKSU location should 
be within 20 - 80% without condensation, and 
the temperature should be relatively constant 
within a range of 32 - 122” F (0 - 50” C). Ex- 
posure to dust and airborne chemicals should 
also be minimized. 
03.20 Power Requirements 
03.21 Power for the HKSU (both Se & Vle) is 
provided by the power supply (HPSU), which in 
turn requires power from a grounded 117 VAC 
outlet. The outlet should be separately fused 
(dedicated) and rated at 15 amps .~ - 
-l- .  
						

							INSTALLATION INSTRUCTIONS 
SECTION 500-036-200 
JANUARY 1988 
03.30 Main Distribution Frame Require- 
ments 
03.31 To determine the Main Distribution 
Frame (MDF) space requirements, refer to the 
following paragraphs: 
l Mounting the HKSU: Paragraph 04.00 
l Station Wiring: Paragraph 06.00 
- 
l CO Line Connections: Paragraph 06.20 
l Installation of Options (External): Paragraph 
09 
l HKSU Connections: Paragraph 10 
04 HKSU INSTALLATION 
04.00 Mounting the HKSU 
1) Remove both side covers from the HKSU (Fig- 
ure 2) by pressing in on the two small ribbed 
sections on each side cover to free the hold- 
ers. 
FIGURE 2--HKSU 
SIDE COVERS 
2) Hold the HKSU against the wall in its 
planned location and mark the screw loca- 
tions through the centers of the two keyholes 
on the upper sides of the HKSU (Figure 3). 
3) Lay the HKSU aside for the moment and start 
two screws into the wall at the marked loca- 
tions. Use 1%” panhead wood screws and 
stop when they have penetrated to half their 
depth. 
4) Hang the HKSU on the two screws and start 
FOUR WALL 
FIGURE 3-HKSU WALL MOUNTING 
two additional screws in the lower two holes 
(Figure 3). Tighten all four screws. 
5) Knockouts are provided on top and bottom of 
the side covers to permit cables to enter the 
HKSU. Remove the appropriate knockouts. 
6) Reinstall the side covers. 
04.10 Power Supply Installation 
04.11 The power supplies used with both sys- 
tems are very similar in appearance but provide 
different current levels: 
l Se = HPSU 6120 
* Vle = HPSU 7120 
04.12 The system requires 24 VDC, which is 
provided by the internal, factory-installed power 
supply (HPSU 6120/7120). The HPSU requires 
117 VAC, 60 Hz, with a permissible AC input 
voltage range of 90 - 130 VAC. 
04.13 In both systems, the HKSU is shipped 
with the power supply installed. Use the follow- 
ing procedures if it becomes necessary to re- 
move or replace a power supply: 
STRATA Se: 
1) Turn the system OFF and unplug the power 
cord. 
.* 
: . ../ 
-2-  
						

							2) 
3) 
4) 
5) 
6) 
7) 
8) 
9) 
Remove the power supply cable connector at 
P7 in the upper left of the SMAU PCB. (It 
may be necessary to remove the SEPU PC6 
before doing this.) 
Remove the ground straps on the right and 
left side panels of the HKSU as well as the 
two screws at the top corners of the power 
SUPPlY. 
Pull the top of the power supply forward and 
lift the power supply out of the HKSU. 
Test the power supply using the procedure 
in Paragraph 04.14. 
Install the new power supply in the HKSU. 
Replace the screws and ground straps re- 
moved in step 3. 
Reconnect the power supply cable connector 
to P7 on the SMAU PCB. (Reinstall the SEPU 
PCB if it was removed.) 
Plug the power cord in and turn the system 
ON. 
STRATA Vie: 7) 
1) Turn the system OFF and unplug the power 
cord. 
2) Remove the power supply cable connector 
from Pl in the top center of the VMAU PCB. 
3) Remove the ground straps on the right and 
left side panels of the HKSU as well as the 
two screws at the top corners of the power 
supply. 
4) Pull the top of the power supply forward and 
lift the power suppiy out of the HKSU. 
5) Test the power supply using the procedure 
in Paragraph 04.14. 
6) Install the new power supply in the HKSU. 
7) Replace the screws and ground straps re- 
moved in step 3. 
8) Reconnect the power suppiy cable connector 
at PI on the VMAU PCB. 
9) Plug the power cord in and turn the system 
ON. 
04.14 if power supply problems are suspected 6) Verify that the voltages fall within the foilow- 
or if a new power supply is being installed, the ing ranges: -3  INSTALIATION 
INSTRUCTIONS 
SECTION 500-036-200 
- JANUARY 1988 
following voltage check should be performed: 
STRATA Se: 
1) 
2) 
3) 
4) 
5) 
6) 
8) 
9) 
Turn the power supply OFF and disconnect ’ 
the system power cord. 
Remove the HKSU front cover. 
Disconnect the power suppiy,cabie connector 
at P7 in the upper left corner of the SMAU 
PCB. 
Reconnect the power cord and turn the 
power ON. 
Using a voltmeter, check the power supply 
output voltages at the power supplv cable con- 
nector (P7)-per the diagram below: 
Verify that the voltages fail within the 
ing ranges: foliow- 
Nominal 
t24 
+12 Range 
+23 - +29 
i-1 0.8 - .+13.2. 
+5 
+4.75 - t5.25 
if the voltages are correct, go to step 8. If not, 
replace the power supply and recheck voit- 
ages. 
Turn OFF the power. 
Connect the power supply cable connector 
back to P7 on the SMAU PCB. 
10) Reinstall the HKSU cover, and turn the 
power back ON. 
STRATA Vie: 
1) Turn OFF the power and unplug the power 
cord from facility power. 
2) Remove the front cover from the HKSU. 
3) Disconnect the power supply cable connector 
Pl at the top center of the VMAU PCB (just 
below the power supply). 
4) Reconnect the power cord and turn the 
power ON. 
5) Using a voltmeter, check the power supply 
output voltages at the power supply cable con- 
nector (Pl ) per the diagram below: 
-3-  
						

							LA1 IUN INSTRUCTIONS 
N 
500-036-200 
RY 1988 
Nominal 
Range 
+24 +23 - +29 
+12 
t10.8 - 
t13.2 
+5 t4.75 
- t5.25 
? voltages are correct, go to step 8. If not, 
Ice the power supply and recheck volt- 
‘. 
OFF the power. 
lect the power supply cable connector 
to PI on the VMAU PC8 
nstall the HKSU cover, and turn the 
ver back ON. 
Optional power backup units are avaii- 
both systems: 
HPFB 
HPBU-7 
4 Se: 
:B is a separate unit that connects to the 
panel of the HKSU via a 2-wire connec- 
Ire 4). 
:o three HPFB modules may be con- 
?d together in parallel to extend the 
?r backup time. With the optional battery 
up assembly installed, the system will 
nue to operate after a facilities power 
.e. The actual time period depends on 
system configuration/application and 
,er of battery backup modules used. 
1GlJRE 4-HPFB INSTALLATION STRATA We: 
The HPBU-7 is a PCB that mounts inside the 
power supply housing (Figure 5) and is con- 
netted to the female 3-prong connector inside 
the power supply’s case. Secure the HPBU with 
the two provided screws. 
* The HPBU is then connected via the terminal 
block to the recommended battery pack 
(which is customer-supplied, consisting of 
two 12 VDC, maintenance-free, automobile- 
type batteries-80 amp/hour maximum rat- a 
ing). With the battery backup assembly in- 
stalled, all functions of the system will 
continue to operate for several hours after 
a facilities power failure (the actual time pe- 
riod is in direct ratio to the type and size of 
batteries selected). . 
FiGURE 5-HPBU INSTALLATION 
04.16 When installing or removing the HPBU, 
perform the following: 
WARNING! 
When installing the HPBU-7 in the power 
supply, care must be taken against acci- 
dental shorts that may injure the installer 
or damage the power suppiy. 
1) Turn OFF the power and unplug the system 
power cord. 
2) Remove the front cover from the HKSU. 
3) Remove the metal plate on the left side of 
the power supply case (two screws). 
.s 
: 
-4-  
						

							4) Connect the 4-wire connector extending 
from the rear of the HPBU-7 inside the power 
supply case as shown in Figure 5. 
5) Mount the HPBU-7 with the two screws re- 
moved in step 3. 
6) Connect the positive terminal on one battery 
to the negative terminal of the other battery 
(in series). 
7) Connect the free negative battery terminal to 
the negative terminal on the HPBU-7. 
8) Connect the free positive battery terminal to 
the positive terminal on the HPBU-7. 
04.20 System Ground Check 
04.21 Both Toshiba telephone systems re- 
quire a solid earth ground. Failure to provide 
such a ground may lead to confusing trouble 
symptoms in the system and, in extreme cases, 
circuit board failure. In most installations (within 
the continental United States), the ground pro- 
vided by the “third wire ground” at the commer- 
cial power outlet will be satisfactory for all sys- 
tem requirements. However, in a small 
percentage of installations, this ground may be 
installed incorrectly. Therefore, prior to installing 
a system, the third wire ground must be tested 
for continuity by either measuring the resis- 
tance 
between the third 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 follow- 
ing test procedures should 
be performed. 
WARNING! 
Hazardous voltage is exposed during the fol- 
lowing test. Use great care when working 
with AC powerline voltage. 
1) 
2) 
3) 
4) 
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 third 
prong terminal (GND). Either the same read- 
ing or a reading of 0 volts should be ob- 
tained. 
If the reading is OV, leave one probe on the 
GND tei,-ninal and move the other probe to 
5) 
6) 
7) 
8) 
INSTALLATION INSTRUCTIONS 
SECTION 500-036-200 
_ JANUARY 1988 
the second voltage terminal. If a reading of 
OV is obtained on both voltage terminals, the 
outlet is not properly grounded. Omit steps 
5 through 7 and proceed directly to step 8. , 
If a reading of OV on one terminal and a read- 
ing of 90 - 130 VAC on the *other terminal 
is not obtained, the outlet is not properly 
grounded. Omit steps 6 and-7 and proceed 
directly to step 8. 
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 out- 
let. 
Set the meter on the “OHMS/Rxl” scale, 
place one probe on the GND terminal and the 
other probe on the terminal that produced a 
reading of OV. A reading of less than 1 ohm 
should be obtained. If a reading of more than 
1 ohm is obtained, the outlet is not ade- 
quately grounded. 
If the above tests show the outlet is.improp-. . 
erly grounded, that condition should be cor- 
rected 
by a qualified electrician (per Article 
250 of the National Electrical Code) before 
the system is connected. 
05 PRINTED CIRCUIT BOARD 
INSTALLATION 
05.00 General 
05.01 Complete with all available options, 
both systems utilize up to ten (Se) or eight (Vle) 
printed circuit boards internally and various op- 
tion modules. The names and functions are as 
follows 
05.02 The SMAU/VMAU and SCCU/VCCU 
are factory-installed in the HKSU. 
05.03 If any optional PCBs (SSTU, SEPU, 
STMU, SMOU, SPFU, SVCU, SDTU or SCOU/ 
VCOU) are required, refer to Figure 6 and re- 
move the HKSU cover as follows: 
1) Remove both side covers by pressing in on 
the two small ribbed sections on each cover 
to free the holders. 
2) Remove three screws from each side of the 
HKSU per Figure 6. 
3) Lift the HKSU cover off. -_ 
: 
-5-  
						

							INSTALLATION INSTRUCTIONS 
SECTION 500-036-200 
JANUARY 1988 
RElMOVE SIX 
COVER SCREWS 
0 
FIGURE 6-HKSU COVER REMOVAL 
05.10 Factory-Installed PCBs 
05.11 SMAUIVMAU: The main printed cir- 
cuit board of the key service unit consists of the 
following three functions: 
a) Station Interface: An interface between the 
key service unit and up to four stations (Se) 
or up to eight stations (We), which includes 
the solid-state, space-division matrix used for 
voice connections between the stations and 
the CO/PBX lines. Two-pair wiring is re- 
quired for each station; one pair carrying 
voice and the other pair carrying control data 
to and from the station. 
b) CO Interface: An interface between the key 
service unit and the public telephone network 
or PBX for up to two lines (Se) or up to three 
lines (We). Ring detection, hold and dial out- 
pulsing for these lines are performed by this 
board. Depending upon local CO require- 
ments, each incoming line can be separately 
connected and programmed to provide DTMF 
or rotary-dial outpulsing. 
c) 
Tone: Performs a number of miscellaneous 
system functions: 
l Generates system tones. 
a Provides the switching matrix for the de- livery of tones for both paging and inter- 
. . 
corn connections. 
05.12 
SCCU/VCCU: All system. control 
functions are performed by the single-chip micro-’ 
processor on this printed circuit board. The sys- 
tem program stored in ROM, RAM for system 
operation, and the RAM for system data storage 
are also located on this circuit board. A battery 
on this board protects systemt’filemory should a 
power occur. 
05.13 See Figure 1 and verify that the battery 
strap on the SCCU/VCCU is in the on position. 
05.14 The SMAU/VMAU and SCCU/VCCU 
PCBs are factory-installed in the HKSU. If repair 
of either PCB is necessary, the HKSU should be 
replaced and returned to your supplier. 
05.20 SCOU/VCOU 
05.21 An optional interface between the 
SMAUIVMAU and one/three additional CO 
line(s). Depending upon local CO requirements, 
the SCOU/VCOU is programmed to’ provide 
DTMF or rotary-dial outpulsing. The SCOU 
serves one CO line; the VCOU serves up to 
three CO lines, and both serve up to three off- 
premises lines. 
HOLES 
P8 SPFU 
FIGURE 7-SCOU and SPFU LOCATIONS 
-3 
: 
-6-  
						

							STRATA Se: 
05.22 The SCOU PCB mounts on four lo-pin 
connectors at the bottom of the SMAU PCB into 
PlO, PI 1, PI2 and P13 connectors (Figure 7). 
Secure the SCOU PCB to the right side panel 
with the two provided screws. 
- STRATA Vle: 
05.23 The VCOU PCB mounts on four lo-pin 
connectors and one plastic standoff at the bot- 
tom of the VMAU PCB (Figure 8). Install the 
VCOU’s three lo-pin connectors into the 
VMAU’s P6, P7 and P8 connectors. Secure the 
VCOU to the left and the right side panels with 
two provided screws on each side. 
FIGURE 8-VCOU LOCATION 
05.30 SPFU (Se only) 
05.31 An optional PCB with relays to connect 
the CO lines to three standard telephones if a 
power failure occurs. 
05.32 Install into the connector marked SPFU 
at the bottom of the SMAU PCB (Figure 7). 
05.40 SSTU 
05.41 An optional interface between the key 
service unit and stations 14 - 17 (stations 18 
- 25 on STRATA We). Each SSTU PCB serves 
up to four stations. Two- or three-pair wiring is 
required for each station; one pair carrying voice 
and the other pair carrying control data to and 
from the station (the third pair is required for 
OCA). 
STRATA Se: 
05.42 For adding stations 14 - 17, refer to Fig- 
ure 9, and insert the three SSTU lo-pin connec- 
INSTALLATION INSTRUCTIONS 
SECTION 500-036-200 
- JANUARY 1988 
tors into P14, P15 and P16 connectors on the 
SMAU PCB. Secure the SSTU PCB to the right 
side panel with the two provided screws Route 
the provided jumper cable from the SSTU P19 
’ 
connector to the P19 connector on the SMAU 
to provide crosspoints for stations 14 - 17. 
NOTE: 
Jumper cable is necessary only when OCA 
is equipped. 
FIGURE g--Se SSTU and SVCU LOCATIONS 
STRATA Vie: 
05.43 For adding stations 18 - 21, refer to Fig- 
ure 10, and insert the three SSTU lo-pin con- 
nectors into P9, PlO and Pl 1 connectors on 
the VMAU PCB. Secure the SSTU PCB to the 
right side panel with the two provided screws. 
(For stations 22 - 25, insert the three lo-pin 
connectors on another SSTU into P12, P13 and 
PI4 connectors on the VMAU PCB. Secure the 
SSTU PCB to the right side panel with the two 
provided screws.) 
a) Route the provided jumper cable from the 
SSTU P19 connector to the P21 connector on 
the VMAU to provide crosspoints for stations 
18 - 21. 
b) Route the provided jumper cable from the 
SSTU P19 connector to the P23 connector 
on the VMAU to provide crosspoints for sta- 
tions 22 - 25. 
NOTE: 
Jumper cable is necessary only when OCA 
is equipped. .3 
: 
-7- .  
						

							INSTALLATION INSTRUCTIONS 
SECTION 500-036-200 
JANUARY 1988 
FIGURE IO-Vie SSTU and SVCU LOCATIONS 
05.50 SMOU 
05.51 An optional music-on-hold source that 
provides electronic synthesized music. One or 
two musical tunes are available, selected via a 
switch on this board. The SMOU is connected 
to the SMAU/VMAU via a 7-pin connector. 
STRATA Se: 
05.52 Install the SMOU PCB into connector 
P6 on the upper center of the SMAU PCB (Fig- 
ure 11). 
STRATA We: 
05.53 Install the SMOU PCB into connector 
P16 on the upper center of the VMAU PCB (Fig- 
ure 11). 
05.60 SEPU 
05.61 An optional 3-watt amplifier for exter- 
nal paging, using a customer-supplied 8-ohm 
speaker (connected to the SMAU/VMAU via a 
1 O-pin connector). 
STRATA Se: 
05.62 Install the SEPU into connector P5 on 
the SMAU PCB (Figure 11). Slide the SEPU’s 
corner hole over the white, plastic standoff sup- 
port. Secure the SEPU to the left side panel with 
two screws. 
FIGURE ll-Se/Vie SEW and SMOU LOCATIONS 
STRATA Vie: 
05.63 Install the SEPU into connector P15 on 
the VMAU PCS (Figure 11). Slide the SEPU’s 
corner hole over the white, plastic standoff sup- 
port. Secure the SEPU to the left side panel with 
two screws. 
05.70 svcu 
05.71 The Off-hook Call Announce interface 
that mounts on the main PCB of the key service 
unit to provide OCA access. One SVCU is re- 
quired for every eight stations requiring OCA. 
(Adds two intercom lines and two OCA paths in 
STRATA We.) 
STRATA Se: 
05.72 Insert connector PI on the SVCU into 
the P20 connector on the SMAU (Figure 9). 
STRATA Vie: 
a) To provide OCA to stations 10 - 17, refer to 
Figure 10, and insert connector Pl on the 
SVCU into the P25 connector on the VMAU. 
b) To provide OCA to stations 18 - 25, insert 
connector Pl on the SVCU into the P26 con- 
nector on the VMAU. 
05.80 SDTU 
05.81 Provides Remote Administration/Main- 
.% 
-. 
-8-