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...

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...

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...

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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...

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...

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...

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...

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...