Toshiba Strata Vi Electronic Key Telephone System Installation And Maintenance Manual

							0 COPYRIGHT 1982 
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							TAHLEC)FCONI’~NTS .a.,.e.a.G . . . . . . . . . . . a . . . . . 
GENER.4L . * m . . * * . * . . * * * * * * 0 . . * * * * . * * , * * . * 
SUmARk: ;ktX!IIPTION * * * . * * * . D * * * * , . * * o 
PHYSICAL flESCRIPTIOr\i e . e e . . . a . . e . e e . . . . : : : : : : 
ELEC’rRIC4L CHAR4CTEMdTICS . s . s . . . . e . . e ~ e . s . . a 2 
PEATURES Ai’iIl SERVICES 2 
‘rAt3LE A (ELECrKIC41, CHii4&%i.I;i’;I&Sj : : : : : : : : : : : : : : 3 
TABLE B (STh’JDAi39 FEATLIKES) u . . e Q . . . e , e . . o . e . . . . 
‘I‘ABLE C (QPTIONAL FEATLIKES) . . . . . . . . . . . . . . . . . . , . 
SYSTEM 9PERXTION e . e . . . . . a . s a . . . , ~ . . . . ~ , . , . . . 
SYSTEIvi CONPIGLJKX’rION 
KEY SERVICE uiw (iViKSUj * .O : .- .O ** ** : : ** : : : : : : : : : : : : : : 
POV1IEH. SUPPLY ASSEMBLY o . . . . . . . . . . . s . e . . e - B . . 
STATION E~~iJIPviEbiT . a . . Q . . m . . * . . . 0 s a + . a o . . a . . e 
INSTALLATION . . 0 . . . . . . . . . e a . . . ~ , . . , . . ~ . * . . e . 
MAINTEbIANCE e . . . n a . . q . e e . 0 . ,. . . . . . ~ ~ . . ~ . . . . 
FEATURES AND OPtZRATION a . e - . - . . o . ~ . . . ~ ~ . . ~ , . o . 
GENERAL . - e . . . . - . o s . . . e . . . . q . . . a . a a . . . . . 
STANDARI) FEATURES . e a . . . . e e . . . . . . . e . . . . . . . . . 
3PTIONAL FEATURES . . . s . . . . q . . u . . . . . . . . . . a . e . 11 
T 
P GE 
MKSU (External View) ........................... 1 
,ViKSU (Internal View) ........... 
...................... 1 
EKT . . . . . . . . . . . . . . . . 2 
20-Key EKT ................................. 2 
SYSTEh’l BLOCK DIAGRAM ......................... 
5 
FUNCTIONAL BLOCK i)IAGRAM ...................... 
.VIKSU ..................................... 
EKT .....................................  
						

							The STRATA VI is an Elec- 
tronic Key Telephone system with many 
standard features; utilizing stored 
program control, custom L&I. circuitry, 
solid-state space division switching and 
reduced station cabling. Served by a 
Key Service Unit (MKSU) that is housed 
in a single cabinet, the system has a 
maximum capacity of six central 
office/PBX lines, two intercom lines 
and 16 station lines. 
STRATA VI includes a spe- 
designed Electronic Key Tele- 
phone (EKT) which incorporates hands- 
free answering and full speakerphone 
capabilities as standard features. Each 
EXT is connected to the rest of the 
system via industry standard 2-pair 
cabling, and is equipped with a push 
button dial pad. Solid state electronics 
within the MKSU translates signals from 
the station dial pad into either DTMF 
or rotary dial signals, as required by 
the central office (CO). 
STRATA VI is electrically 
compatible with the public telephone 
net-work and is also designed to 
function in a “behind PBX” environment. 
Maintenance procedures 
are 
based on quickly locating and replacing 
defective plug-in units, keeping service 
disruption to a minimum. 
Designed for table-top or wall 
mounting, the STRATA VI MKSU is 
housed in a single metal cabinet (Figure 
1) with the following dimensions: 
Height 8.8 inches (224 mm) 
Width 16.0 inches (406 mm) 
Depth 11.8 inches (300 mm) 
Weight 19.8 lbs. 
(9 kg) 
in. 
mm) 
It contains a single shelf that is 
arranged to accommodate up to six 
printed circuit boards (Figure 2). 
All 
of the printed circuit boards (PCBs) 
plug into connectors mounted on the 
back plane of the equipment shelf. 
3 
- 
/  - 
0 
0 
I 
i 
7 
2 
Each PCB measures 8.7 x 7.1 
inches (220 x 180 mm) and is equipped 
with either an 80- or a loo-pin edge 
connector. 
All external MKSU eonnec- 
tions are made on the front panels of 
the various PCBs using cables with in- 
dustry standard couplers.,  
						

							The STRATA VI Electronic 
Key Telephone 
(EKT) (Figure 3) 
measures: 
Width 
Depth 
Height 
Speaker Volume-R 
Tone & Intercom 
Handset 
Speaker 
.!Aodula 
Cord 
Speaker On/Off LED 
I 
8.8 inches (224 mm) 
9.1 inches (230 mmj 
4.0 inches (102 mm) 
Speaker Volume-Dial 
Tone & Voice Level 
Flash & Message 
Waiting Key 
ot Disturb 
de Line 
Intercom Access 
Intercom, Outside 
Speaker On/Off Key 
and is equipped with 14 line and fea- 
ture keys in addition to its push-but- 
ton dial pad. Six of the keys are 
utilized for central office/PBX lines, 
two for intercom lines and the re- 
maining six keys are used for feature 
operation. Each EKT features a modu- 
lar handset cord and is connected to 
- 
the system via a 4-conductor modular 
line cord. 
An optional executive tele- 
phone (20-key EKT) provides, via ten 
additional feature keys; seven one-but- 
ton auto-dial (AD l-7) telephone num- 
bers, auto-redial, pause and auto-dial 
access (see Figure 4). (20-key EKT) 
The electrical characteristics 
e system are detailed in Table A. 
2 The MKSU operates from ‘an 
rnal 24 VDC power supply. 
Loss of AC ‘power will cause 
operational failure of the system. 
However, system memory is provided 
with internal battery power to protect, 
it from loss due to power failure, and 
full system reserve power is available 
as an option. 
The features and services of 
the STRATA VI Electronic Key Tele- 
phone System are summarized in Tables 
B and C, which list the standard and 
optional features respectively.  
						

							1000 ft. (305 MI, 24 AWG 
600 Hz/800 Hz, modulated by 16 Hz, 
1 second on-3 seconds off 
600 Hz, 1 second on-3 seconds off 
2400 Hz, 1 second on-3 seconds off 
2400 Hz, I second on--l second off * 
600 Hz, continuous 
600 Hz, 1 second on-3 seconds off 
600 Hz, 1 second on-l second off 
600 Hz, 0.25 sec. on-O.25 sec. off 
600 Hz, 0.12 sec. on-O.12 sec. off 
600 Hz, 1 second on only 
Push-button; system generated DTIUF 
or rotary dial 
90-130 VAC, 60 Hz, 96 VA 
o-5o” c 
20-80X Relative Humidity (without 
condensation) 
All call voice page 
Alternate point answer 
Automatic dialing-system 
4utomatic hold recall 
Automatic privacy with release 
4utomatic release from hold Background music -with 
control 
Busy override 
Conference-multi-station 
Conference-multi-trunk 
Distinctive ringing station  
						

							DTMF and dial pulse compatible 
External page interface 
Flash key-PBX line transfer or CO 
dial tone recall 
Flexible line ringing assignment 
Message waiting 
Multiple simultaneous 
handsfree 
intercom paths 
Music-on-hold interface 
Night ringing over external page 
Night transfer of ringing 
Non-blocking dialing 
Outgoing call restriction 
PBX compatible 
Private CO lines 
Repeat last number dialed 
System programming 
Restricted toll access 
Do not disturb 
Executive override of privacy 
Handsfree talk-back I-called illumination 
I-hold illumination 
I-use illumination 
Modular handset and line cord 
Mute button 
On-hook dialing 
Push-button dialing 
Ringing line preference 
Speakerphone 
Wall mounting 
Automatic dialing-station 
Busy Lamp Field (BLF) 
Relay service 
External page 
Night transfer 
System battery back-up 
20-key EKT 
The system (Figure 5) consists 
of an MKSU, power supply and up to 
16 Electronic Key Telephones. All 
connections between the MKSU and the 
EKTs are made via a customer-provided 
main distribution frame (MDF). 
Using 
modular line cords, the CO lines are 
then connected between the MCOU 
PCBs and the telephone company-pro- 
- vided RI-25 jacks. An external tuner 
(or equivalent) is required if the 
music-on-hold feature is utilized. 
2 A functional block diagram of 
the STRATA VI MKSU is shown in 
Figure 6 (page 6); it consists of station 
interfaces (MSTU), which include a 
solid-state space division 
matrix; CO 
line interfaces (MCOU) and central 
control equipment (MTOU and 1MCCI.l). 
Connections between the sta- 
tion voice lines and the CO lines are 
via the switching matrix provided on the MSTU PCBs.- A similar matrix is 
provided on the MTOU for intercom 
connections, paging connections and for 
the distribution of the various system 
tones (Dial, Busy, etc.). 
The system is entirely under 
the control of a single chip micro- 
processor, which is located, along with 
the system program and data memories, 
on the MCCU PCB. 
The MKSU arrangement illus 
t- 
rated in Figure 7 (page 7) shows the 
location of the various PCBs. All 
PCBs slide in from the front of the 
cabinet, and, although the rear panel of 
the :%IKSU is removable, rear access is 
usually not required.  
						

							: 
. MKSU 
POWER 
SUPPLY 
MDF 
F4l 
TUNER 
EXTERNAL 
2 PAIR I 
2 PAIR 2 PAIR 
EKT 
EKT 
EKT  
						

							EKT 2 PAIR 
DATA 
MCCU 
I 6 C/O 
EXTERNAL 
SPEAKER 
AC115V 
Complete with all options, the 
MKSU utilizes seven different circuit 
boards. The names and functions of 
the PCBs are: 
MCOU (MF or DPk-an interface 
between the MKSU and the public telephone network or PBX lines. 
Ring detection, hold and dial out- 
pulsing for three ckciiits are per- 
formed by this PCB. Depending 
upon local CO requirements, an MF 
or DP type of IUCOU will be 
provided (MF for DTMF outpulsing;