Toshiba Perception Electronic Business Communications System Installation And Maintenance Manual

							Station loop limit
Standard telephone
Electronic key telephone
Minimum leak resistance
Maximum ringer/line (std. tele.)Ringing (std. 
tele.)Ringing tone 
(EKT)Buzz tone
Busy override tone
ing trip
Dial tone
Busy tone
Ringback tone
Overflow tone
Recall dial tone
Miscellaneous tones
Crosstalk
Insertion loss
Station-to-station
Station-to-trunk
Trunk-to-trunk
Longitudinal balance
Return loss
idle circuit noise
System impedance
Switching
Primary power
Reserve power
Central office loop limit
Maximum distance between
console and equipment cabinet
Operating temperature
Operating humidity
Storage temperature500 
R(including telephone)
1000 ft. 24 AWG cable
30,000 
R3
85f 10 Vrms, 20 Hz, immediate ringing
500/640 Hz, modulated at IO Hz
300 Hz
2400 Hz
During silent or ringing period
3501440 Hz, continuous
480/620 Hz, interrupted at 60 ipm
4401480 Hz, 1 sec. on, 3 sec. off
480/620 Hz, interrupted at 120 ipm
350/440 Hz, three l/8-sec. pulses, followed by continuous tone
440 Hz
> 75 dB down
5 
dB1 dB1 
dB
> 60 dB (200 h 1000 Hz) on- and off-hook> 40 dB (1000 ‘L 4000 Hz) on- and off-hook
> 18dB ERL
25 
dBrnC600 
Qfor stations600/900 5-2for trunks
TDM, PCM, non-blocking
90
5125VAC,500watts,50160Hz
An external charger/inverter supplies 115 VAC to the primary
power supply
1500 
r;21000 ft. (24 AWG)
32 
m 104” F (0 ti 40” C)
20 
I\J 80% without condensation
14 
I‘v149’ F (-10~65°C) 
						

							Features and Services
All the features and services availablein PERCEPTION are summarized in Tables B and
C, which list the basic and optional features,
respectively.Access toPagingClass of Service Restrictions
Code Restrictions-3-digit
Console-less Operation
Data Transmission-voice band
Distinctive Ringing
Flexible Numbering
Immediate Ringing
Multiple Console Operation
Multiple Trunk Groups
Music-on-hold and Camp-on
Night Service-Fixed
Night Service-FlexibleNight Service-Universal
Remote Access to Services
Remote Administration/Maintenance
Rotary Dial Compatibility
Route Advance
Station Set Mix
Tandem Switching
Tenant Service
Tie Trunks
Toll Restriciton
Tone Dialing 
(DTMF)Tone-to-dial Pulse Conversion
Traffic Measurement
Uniform Distribution Wiring
Variable Time-out
Automatic Callback
Call Forward-All Calls
Call Forward-No Answer
Call Pickup-Directed
Call Pickup-Group
Call Waiting
Conference-3-party With Transfer
Direct Outward Dialing
Do Not Disturb
Hold-All Calls
Manual Line Service
Meet-me Page
Message WaitingPrivate CO Line Services
Remote Retrieval of Held Calls
Station Hunting-Circular
Station Hunting-Distributed
Station Hunting-Secretarial
Station Hunting-Terminal
Trunk-to-trunk Connections
Uninterrupted Line Connection
Automatic Dialing
Automatic Line Preference
Call Status Indication
Common Audible Signalling
End-to-end Signalling
Handsfree Answerback with Speaker Cut-off
Handsfree Monitoring
l-hold Indication
I-use Indication
Manual 
Signall ing
Modular Cords
Multiple Appearance Directory Number
Non-locking KeysOn-hook Dialing
Prime Directory Number
Privacy
Privacy Release
Push-button Dialing
Push-button/key Access to Features
ReleaseSpeaker/Amplifier
Speakerphone
Tone Buzzing
Tone Ringing
Voice Paging
Volume Control
*Future feature 
						

							Attendant Camp-on with Indication
Attendant Conference
Attendant Emergency Transfer Control
Attendant Initialize
Attendant Recall
Busy Lamp Field
Call Waiting Lamp
Digital Information Display
Direct Access to Paging
Incoming Call lndentification
IndividualTrunk Access
Night Service Control
Non-delayed Operation
Overflow FacilitySpeed Dialing-System
Station Verification
Switched Loop Termination
Through Dialing
Timed Reminders-Variable
Time of Day Display, Set, Reset
Trunk Group Access Control
Trunk Group Busy Indication
Trunk Equipment Number Display
Trunk-to-trunk Connections
Trunk Verification
Power Failure/Emergency Transfer
ect Inward Dialing (DID)
Call Forward-Busy
Multiple Listed Directory NumberLeast Cost Routing
Station Message Detail Recording
Reserve Power
20-key EKT
Wall Mount Kit
“Future featuke
Q2.00eneral
- 02.0The system diagram in Figure 6 shows
the central equipment cabinet, attendant console,
electronic key telephone, conventional 
500/2500-type telephone,and emergency transfer unit.
An external customer-provided tuner (or equiva-
lent) is required as a music-on-hold source. All
connections to on-premise equipment and the
public telephone network are made via a 
customer-provided main distribution frame (MD 
F).2.02The functional block diagram in Figure 7
shows the central equipment divided into four
main sections; power,central control, central
service equipment and peripheral interface equip-
ment.a) Power Section:
Main power supply
20 Hz ringing
b) Central Control:
Floppy disk unit
DCCU
DPEU
A portion of DPMU
c) Central Service Equipment:
DTCU
DSWUDRCU
A portion of DPMU
ipheralInterface Equipment:
DSTU (interfaces conventional telephones)
DEKU (interfaces the 
EKTs and attendant
consoles) 
						

							1______ ----- 
						

							---
---
1--I-
r
--
-----7---1 r----
PE.--
--l
1
--
20Hz-48 -24 +12 +5-65 (ONLY DCCU 
						

							Various trunk interfaces, such as:
DCOU (CO trunk)
DEMU (tie trunk)
2.03PERCEPTION utilizes a non-blocking,
pulse code modulated (PCM), time division net-
work consisting of six 32-time-slot PCM highways
and a multiplexer circuit that performs time slot
interchange, digital padding, and conferencing
functions. Analog-to-digital conversion is per-
formed on each peripheral PCB. System tones
(dial, busy, etc) are stored in digital form in
read-only-memory (ROM).
Central control consists primarily of a
processor and its associated memory. Hard-
ware logic necessary for various system interfaces
is located on the DPEU PCB; a floppy disk unit
is used for secure memory storage.
0entral E
0Figure 2 shows the location of the PCB
mounting shelves, power supply, ringing supply,
and floppy disk unit in the central equipment
cabinet (DCEC). All 
PCBs plug in from the front
of the cabinet; all external connections are made
at the rear of the cabinet (Figure 3).
0The DCEC is divided into four shelves,
designated 
#I through #4 from top to bottom.
Shelf 
#I houses the DFRA subassembly
containing the following equipment:
a) Floppy Disk Drive 
(DFDD)-a secure storage
area for system programs and customer office
_ data.
b) 20 Hz Ringing Supply (DRNG).03.04Shelf 
#2 houses the following PCBs(eight types) :
a) Time Switch Unit 
(DSWU)-performs the
time slot interchange function for the PCM
switching and conferencing. Also provides
digital speech path with digital padding.
b) Time Control Unit (DTCU)-provides the
timing and control for time slot switching
and system tones.Central Control Unit 
(DCCU)-contains the
central processing unit and system memory;
performs all system control functions.
Peripheral Unit 
(DPEUI-performs data trans-
missionandreceiving functions between
station and trunk interfaces and the central
control.
Receiver Unit 
(DRCUJ-provides DTMF re-
ceivers, which are required for receiving dialing
from 2500 telephones. Two types of DRCU
PCBs are available: DRCU 2-4 and DRCU 2-6.
The DRCU 2-4 contains four circuits and is
suitable for most systems. For use in systems
with extremely high outgoing traffic, the
DRCU 2-6 (housing six circuits) is available.
Only 
*one DRCU per system is permitted..*%*-;&kc.” ,s f”“*uPaging and Music Unit 
(DPMU)-interfaces _’“’with the music source (MOH) and the paging 
_ “-* -:equipment. It also has the following functions:_ 
a-::System program loading switch.Q
n‘-System initialization switch,lrAttendant console power supply
“.UNA signal control
1,Power failure/emergency transfer unit 
‘:’ ,. ‘f,(DPFT) control>” *CO Trunk Interface Unit 
(DCOU)-interfacesfour CO lines to the system.
E&M Trunk Unit 
(DEMU)-connects four
TIE trunks to the system.
~~:,‘-J “i’$G “>: j!1, ;i”, I Li 4-i ;e
AI0 TE:Either trunk PCB may be used at each 
trunkPCB slot.
5Shelf 
#3 houses the station line PCBs.There are 15 slots, each PCB interfaces with eight
stations. There are two types:
1) Standard Telephone Interface Unit (DSTU)
2) Electronic Key Telephone Interface Unit
(DEKU)Shelf 
#4 contains the power supply
(DPSA).
1Two electronic key telephones are
available with PERCEPTION (the same two 
						

							EKT models are used in the Toshiba STRATA
EKTS series). Each EKT is housed in an off-white,
impact resistant plastic case with interchangeable
colored faceplates, and is equipped with handset,
dial pad, speaker, ringing volume control, speaker-
phone volume control, and modular handset and
tail cords. In addition, each EKT has four fixed
feature keys (SPKR, MUTE, CONF and HOLD)
and either 10 or 20 flexible assignment keys
(hence the names IO-key and 20-key). Of the
four fixed keys, only the j key is equipped
with an LED.
03.12The 
IO-key EKT has 10 flexible assign-
ment feature keys. The 10 feature keys are all
equipped with 
LEDs and may be assigned as
Directory Number (DN) pick-ups or as access
keys to any of the station custom calling features,
03.13The expanded 
20-key EKT has 10
additional keys (equipped with 
LEDs) that may
be assigned as DN pickups or to access features.
Each EKT is supplied with a brownfaceplate but three additional colors (black, blue
and wine) are available as options.
The EKT is easily wall mounted by
using the optional wall mounting kit.
03.16
All PERCEPTION 
EKTs are fully
functional speakerphones with handsfree 
answer-back capability,
tte~da~t Console
03.21
The PERCEPTION attendant console
is the switched-loop type, and its housing is con-
structed of impact resisitant, off-white plastic.
The layout of the console display panel and
faceplate is shown in Figure 8. A volume control
for the console tone buzzer is located on the rear
of the console behind the busy lamp panel. Modular
jacks for the handset/headset are provided on
both sides of the console. Also, the handset cradle
can be mounted on either side of the console.
The console display panel includes a Busy Lamp
Field and the following displays: Incoming Call
t- ‘C’ 1SRCcosDEST7 STATUS 7TIE COWAT FXINTRCLRNG BSY FWD DNDFIST HNT VCT TLK
ITGB--ALARM ICW0 1 2 3 4MAJ MINMDR5 6 7 8 9
POSNITE BSYOVER VER/ EXCL EXCL
BUZZ CONF FLOW CHG DEST SRC “OLD
~~~1 ELFa
SERMSG CALL ;;AL JOIN PAGE LPK4 LPKB LPKZ LPK, RLS
nuunnnnonn 
						

							Identification, Calling Source Number, Class of
Service, Call Destination Number and Call Destina-
tion Status.
3.22The Busy Lamp Field (BLF) displays
100 2-digit numbers (OOw991, and is equipped
with a“hundreds group”identifier that shows
which group is currently being displayed. The
display alternates between groups in response
to operations of the 
/ key (located on the
console keyboard).
Displays:
The Incoming Call Identification (ICI) display
is a backlighted panel that indicates the type of
call that is currently connected to a console
Loop 
/ key. Twelve different displays areII.^_._^possible:a” ^^ _^TIE:TIE trunk
co:CO trunk
WAT: WATS trunk
FX:Foreign exchange trunk
OPR: Dial “0” call
RCL: Recall
SER: Serial call
HLD: Held call recall
TIM: Timed reminder (Camp-on, RNA, etc.)
LNI:DID call to listed directory number 1
LN2: 
DID call to listed directory number 2
INT:Intercept
The Source (SRC) display is a 
3character,7-segment LED display that gives the attendant
the number of the calling station or trunk
equipment number.
Class of Service (COS) is displayed as a 
2character, 7-segment LED display, giving the
attendant the Class of Service of the calling
- station.
The Destination (DEST) display is a 
3-charac-ter, 7-segment LED display showing the station
or trunk equipment number called by the
attendant.
The Status (STATUS) display is a backlighted
panel that indicates the status of the called
trunk or station. Eight different displays are
possible:
RNG:Called station is ringing.
SY:Called station is busy.DND 
:Called station is in Do Not Disturb mode
FWD: Called station is forwarded to number
now displayed as 
DES-T.RST: Attempted connection is not allowed.
HNT: Called station was busy and hunting
has 
occured to the number now dis-
played as DEST.
VCT: Called number does not exist or is
disabled.
TLK:Attendant is in a voice connection with
the called party.
3.2The console keyboard design includes
a display window, two horizontal rows of 10 keys
each, a 
‘l2-key dial pad, and a vertical row of
four keys.
The faceplate display window houses the
following displays:
Trunk Group Busy (TGB) provides 
10numbered 
LEDs to indicate the status of
trunk groups 0 
w9. , ’  :fALARM 
LEDsforMAJOR, MINOR & MDR:
MAJOR: Alarm occurs when the system is
not functional and is accompa-
nied by an emergency transfer.
MINOR: Indicates that the system ringing
power (DRNG) has failed or the
system time and date was not
resetfollowinga reload or
initialize.
MDR:Alarm indicates a problem with
external SMDR equipment.
Call Waiting (CW) LED indicates a call is
waiting for the attendant.
The lower horizontal row of keys are all
equipped with 
LEDs and (reading from left
to right) are labeled:
MSG :Activates the Message Waiting
feature if the attendant is desig-
nated as the Message Center.
SER CALL: Activates the Serial Call feature.
SP DIAL:Activates the Speed Dial-System
feature.
- I;.,,>L /”JOIN:Connects two parties which have
reached the attendant on two
different LPK keys.
! 0)‘.I1p. ”.m 
						

							PAGE:Provides attendant with a direct,
push-to-talk access to one paging
zone or All Page.
LPK I-4: The four Loop keys are used for
answering and originating calls.
RLS:Releases the console from any
connection.
The upper horizontal row of keys, with the
exception of the HOLD key, are all equipped
with 
LEDs and are labeled left to right:
%ITE:Activates the fixed, flexible and
universal night answering features.
. .
)“i
POS BSY:Used to “busy out” one position
of a 2-console system.
The dial pad is the standard 12-key alpha-
numeric configuration and is used to dial both
internal and outgoing calls from the console.
The four keys in the vertical row on the right
of the console are not equipped with 
LEDsand are labeled top to bottom:
DIS TOD:Displays time
and date fromsystem clock (while being dis-
played the clock can be corrected).
BLF:Used to alternate between the
“hundreds groups” displayed on
the console.
RLS SRC:Disconnects the source party from
a Loop key.
R LS DEST: Disconnects destination party from
a Loop key.
03.25A volume control for the console tone
signal is located on the rear of the console below
the Busy Lamp Field housing.
The console may be used with either
dset or headset, which may be plugged in
on either side of the unit. Also, the handset cradle
may be mounted on either side of the console.
3.27Two switches are located on the under-
side of the console. These switches are for emer-
gency use only and are labeled as follows:
EMT: The Emergency Transfer switch allows
the attendant to set the EMT circuits
manually in the event of a system mal-
function.
INT:The Initialize switch resets the system
logic in the event of a system malfunction.
mergency Transfer SPARE:Reserved for future use.
BUZZ:Allows attendant to select wheth-
er or not signal tone will be heard
during a Call Waiting condition.
CONF:Activates attendant conferencing
(up to six parties including the
attendant console).
OVERFLOW: Transfers waiting calls to an
alternate answerinq point.
VER’CHG: Overrides busy station or trunk
- _-(also used to record an account
number when extending a call).
EXCL DEST:Excludesdestination party from
a 3-way conversation.
EXCLSRC: Excludes source party from a
3-way conversation.
HOLD:Holds calls connected to Loop
keys.3.31
The DPFT is mounted external to the
DCEC (typically adjacent to the MDF) and is con-
trolled via the DPMU PCB. This unit will connect
eight conventional telephones to eight preselected
trunks. When a reset signal is given to the DPTU
active connections will be protected and finally
reset when they become idle.
IAll connections to the Central Equipment
Cabinet (DCEC) are made via plug-in connector
cables. Complete installation instructions, including
connection diagrams, programming instructions,
and operational procedures are included in the
relevant sections of the Installation and Main-
tenance manual. 
						

							04.02PERCEPTION maintenance is aided by
software diagnostics, which assist in pin-pointing
the fault to a particular printed circuit board or
subassembly. A system malfunction is correctedby replacing a PCB or other subassembly.
Stan
Features5.01This section contains a brief description
of the PERCEPTION features listed earlier in
Tables B and C along with some associated oper-
ating procedures. Detailed operation instructions
can be found in the appropriate sections of the
system documentation. Software for the features
listed as standard is present in all PERCEPTION
systems.2
System Features:
Access to Paging:Allows stations to access and use a 
customer-
supplied amplifier for voice paging. The systemprovides five paging zones, which may be
accessed individually or all together.
* CCSA Access:
Accesses a Common Control Switching Arrange-ment (CCSA) network for network inward
dialing to the system, direct outward dialing to
the CCSA network, and other features similar
to those provided on the public exchange
network.
Class of Service Restrictions:The system provides 
16 classes of service
which may be assigned to stations to allow
or deny access to features.g s. ! ,:;*Code Restriction-3-digit:
.IStations may be restricted from toll calls-i