Toshiba Perception Electronic Business Communications System Installation And Maintenance Manual

							If a station user calls a controlled trunk: 
1) User dials the access code. 
Console signals. 
The LPK LED flashes. 
ICI lights and SRC and COS are displayed. 
2) Depress the appropriate m-1 key. 
The LPK LED lights. 
A voice connection is established with 
caller. 
NO TE. 
lfa trunk is available, proceed as in ,*Through 
Dialing,‘. If no trunk is available, take the 
cat/et--s name and station for a ca//back and 
then release. 
To pass a trunk to a station: 
I) Depress an idle m] key. 
The LPK LED lights. 
The RLS LED goes off. 
I the station number. 
DEST displays station number. 
STATUS displays RNG. 
tion answers. 
STATUS changes to TLK. 
4) Dial the trunk access code. 
SRC displays station number. 
CQS displays station COS. 
DEST displays trunk access code and 
number. 
EXCL SRC lights. 
You will hear trunk dial tone. 
5) Depress the m key. 
The RLS LED lights. 
The LPK & EXCL SRC LE 
plays go off. 
Station is free to dial on trunk. 
To release trunk control (TGB LED is 
1) press an idle rmj key. 
The LPK LED lights. 
The RLS LED goes off. 
2) Dial 
q @m, followed by the trunk access 
The TGB (trunk group busy) LED goes off. 
Trunk control is released. 
press the m key. 
The RLS LED lights. 
The LPK LED goes off. 
*Future feature. 
If your system is equipped with more 
than one console serving the same customer, it is 
possible for the consoles to call each other and to 
transfer calls from one to the other. 
To call console-to-console: 
an idle m&T/ key on the c 
PK LED lights. 
e RLS LED goes off. 
2) Dialj77jm on console#l (ormm onconsole 
DEST displays 02 (01). 
STATUS displays RNG. 
You wilf hear ring tone. 
nswers. 
changes to TLK. 
You have a voice connection between 
consoles. 
4) Depress the w key. 
The RLS LED lights. 
The LPK 81 EXCL SRC LEDs and all dis- 
plays go off. 
To transfer a call console-to-console: 
IV0 TE. 
Console #2 can be interchanged freely with 
console # 7 in the following instructions. 
I) Console #I answers an incoming call (start- 
ICI and SRC displays on. 
2) Console #I dials 
q n . 
DEST displays 02. 
STATUS displays RNG. 
EXCL and SRC LEDs light. 
3) Console #2 answers. 
STATUS changes to TLK on console #I. 
A voice connection is established be- 
tween consoles. 
To return to start condition: 
press the [Em] key. 
Call returns to console #I. 
To transfer: 
press the w key. 
The RLS LED lights.  
						

							.53. Your system automatically records the 
ails of some or all of the calls you make to or 
receive from outside the system. Recorded calls 
may be assigned account numbers for billing pur- 
poses ( digits). 
Perform the following before extending 
.53.3 To record an account number: 
I) Start from a standard voice connection. 
The LPK LED is on. 
ICI and SRC displays are on. 
2) Depress the 
PER/m key. 
Connection goes on hold. 
The VER/CHG LED lights. 
3) Dial account number on the dial pad 
t digits). 
en number is complete: 
VER/Cl+G LED goes off. 
b) The talking connection is reestablished. 
4) Process the call in the usual manner. 
essa 
If your console is designated as the 
Message Center, you indicate to the called station 
that a message is waiting 
To leave a message waiting signal: 
1) Process the call in the usual manner. 
2) If busy or no answer: 
3A) Depress the mj key. 
MSG LED lights. 
MW indication is set. 
3t3) Depress the 
[R-j key. 
DEST & STATUS displays go off. 
4) Proceed as with a standard call. 
To cancel Message Waiting: 
I) Depress an idle [m] key. 
The RLS LED goes off. 
The LPK LED lights. 
2) Dial the station’s directory number. 
DEST is displayed as the digits are dialed. 
MSG LED shows status of the MW LED of 
the called station (i.e., if Message Waiting 
is active on that station, the LED will be 
on). 3) Depress the I=] key. 
The MSG LED goes off (if it was on). 
The Message Waiting condition is 
cleared at called station. 
To cancel a!! Message Waiting signals: 
press an idle 
1 LPKT key. 
The RLS LED goes off. 
The LPK LED lights. 
2) I the “all clear” access code 
All Message Waiting conditions in the 
system are cancelled. 
press the m key. 
Your telephone system has an internal 
clock that must be set to the correct date and time 
in order for features such as Traffic Measurement 
and Station Message Detail Recording to be 
effective. 
To display date: 
Depress the 1-1 key. 
The date is then displayed: 
SRC cos 
Month 
W 
To set date: ~ 
DEST 
Year 
Enter the &digit date (via the dial pad) in the fol- 
lowing format: 
MMDDYY 
ple: For January I, 1983, enter 010183. 
The new date will appear in the display. 
To display time: 
Depress the mml key. 
The date is then displayed: 
SRC cos DEST 
t-4ow-s Minutes Seconds 
To set time: 
Enter the S-digit time (via the dial pad) in the 
following format: 
IiHMMSS 
For example: For 930 AM, enter 093000. 
*he new time will appear in the display.  
						

							NO TE. 
The time is displayed and entered in the 24- 
how **military,’ form (for any hour after 12 
noon, add 12). 
e.g. 9:30 AM is 093000 
9:30 PM is 2 13000 
To start the clock and clear the display: 
Depress the mSem/ key a third time. 
Display clears 
It is possible.for the Attendant Console 
o cancel all Call Forwarding arrangements set up 
by station users. 
To cancel all call forwarding: 
press and idle nw] key. 
The RLS LED goes off. 
The LPK LED lights. 
I the call forwarding cancel code 
All CFD arrangements are cancelled. 
3) Depress the m key. 
The LPK LED goes off. 
The RLS LED lights. 
Console becomes idle, 
S-t@ e 
The Initialize (INT) switch located on 
the underside of the console is used to reset sys- 
tem logic in the event of a system malfunction. 
This switch should be used prior to resorting to the 
Emergency Transfer switch. To initialize the system: 
‘l) Depress the 1 
The MAJ LED lights momentarily. 
The RLS LED goes off. 
NITE & POS BSY LEDs light after MAJ 
LED goes off. 
MIN LED lights. 
2) Depress the mj key. 
System switches to operation. 
31 t the system time and date. 
MiN LED goes off. 
4) Proceed with usual system operations. 
E ersy Transfer 
If the system goes completely out of 
and the MAJOR ALARM lamp is not on, 
the Emergency Transfer switch (located on the 
underside of the console on the side nearest the 
dial pad) can be used to manually set the system 
into Emergency Transfer operation. Operating the 
switch will disconnect all existing calls and con- 
nect the designated stations directly to the outside 
lines. 
To operate the Emergency Transfer: 
Depress the r%q button: 
The MAJOR ALARM LED lights. 
To restore normal operation: 
Depress the /Fm] button: 
The MAJOR ALARM LED goes off.  
						

							I FLOW CHART SYMBOLS. a . . . . . . . . . . . . . . . . . . . . . . . .s. . . . . . . . . . . . . . . . . . 
2 DCEC BACKPLANE.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
4;  TABLE of CONTENTS. 
.............................................. 
i 
GENERAL ........................................................ 
‘I 
FAULT CLASSIFICATION 
........................................... ‘I 
FAULT CLEARING PROCEDURES 
.................................... 1 
DEFECTIVE APPARATUS RETURNS 
.................................. 
FAULT IDENTIFICATION AND ELIMINATION PROCEDUR iii 
TABLE A-EKT STATION CABLE CONTINUITY CHECK USI *~tii~.~~..i~ 
TABLE B-EKT STATION CABLE CONTINUITY CHECK USING OHMETER 
... z 
TABLE C-STT STATION CABLE CONTINUITY CHECK USING OHMETER 
... 3 
FLOW CHARTS 
CHART NO. l-FAULT CLASSIFICATION 
........................... 
CHART NO. 2-LOADING FAULTS 
................................. 
CHART NO. 3-POWER FAULTS 
................................... -l-l 
CHART NO. 4-RINGING POWER FAULT 
............................ 13 
CHART NO. 5-TIME SWITCH CLOCK FAULT. 
....................... 14 
CHART NO. 6-DPMU FAULTS 
.................................... 15 
CHART NO. 7-DRCU FAULTS 
.................................... 16 
CHART NO. 8-DCOU/DEMU FAULTS 
CHART NO. 9-DEKU/DSTU FAULTS. : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 17 
CHART NO. IO-SMDR,TTY OR MODEM FAULTS 
.................... 
CHART NO. II-STATION FAULTS. 
................................ 
CHART NO. 12-lNlT/LOAD KEY FAULTS 
........................... 22 
CHART NO. l3-MAJOR ALARM FAULTS 
........................... 23 
CHART NO. l4-CO/TIE TRUNK FAULTS 
...................... 
CHART NO. 15-ATTENDANT CONSOLE FAULTS 
............... : : : : : 2 
25 
CHART NO. l6-COMMON STATION FEATURE FAULTS 
............... 26 
CHART NO. 17-SPEECH PATH OR DIAL TONE FAULTS. 
.............. 30 
CHART NO. ‘l8-DATA/SPEECH PATH OR DIAL TONE FAULTS. 
........ 33 
CHART NO 
. 19-DIALING FAULTS 
...................... 35 
CHART NO. 20-RINGING/RING BACK TONE FAULTS 
..... : : : : : : : : : : : 
37 
CHART NO. 21-MISCELLANEOUS FAULTS 
......................... 39  
						

							Q-i.01 This section describes the maintenance 
procedures used for the diagnosis of faults in the 
PERCEPTION Electronic Business Communication 
systems. Faults are classified and then cleared by 
replacing apparatus and performing operational 
tests in the sequences prescribed by the fault 
clearing flow charts in Paragraph 05. 
Q2.01 A fault classification flow chart is pro- 
vided to ensure that fault clearing is pursued in 
a logical sequence (Chart No. II. 
Q2.02 In the flow charts an assumption is made 
that the fault was discovered and reported by a 
station user. All faults, therefore, are classified 
according to the way they would appear at the 
EKT, STT, Attendant Console or DCEC. 
2.03 Faults and associated flow charts are 
organized into the following categories: 
Flow Chart 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
‘l6 
17 
18 
19 
20 
21 Title 
Fault Classification 
Loading Faults 
Power Faults 
Ringing Power Fault 
Time Switch Clock Fault 
DPMU Faults 
DRCU Faults 
DCOU/DEMU Faults 
DEKU/DSTU Faults 
SMDR, TTY or MODEM Faults 
Station Faults 
IN IT/LOAD Key Faults 
MAJOR ALARM Faults 
CO/TIE Trunk Faults 
Attendant Console Faults 
Common Station Feature Faults 
Speech Path or Dial Tone Faults 
Data/Speech Path or Dial Tone 
Faults 
Dialing Faults 
Ringing/Ring Back Tone Faults 
Miscellaneous Faults 
Before attempting to clear any fault, 
ensure that it is in the PERCEPTION system and 
not caused by associated external equipment such 
as wiring, MOH source, etc. 3.02 Faults in PERCEPTION are cleared by 
replacing PCBs, EKTs, STTs, Attendant Consoles, 
power supply or DFRA, as instructed in the 
flow charts. 
03.0 Five symbols are used in the flow charts. 
These symbols are identified in Figure I. 
The flow charts are sequentially arranged 
ermit rapid fault localization within PERCEP- 
TION. All fault clearing must begin vvith the Fault 
Cfassification F/ow Chart, which is arranged in 
the correct fault locating sequence. 
If more than one station appears faulty, 
but these faults are still classified as station faults 
(as outlined in the flow charts), one station at a 
time can be corrected. 
03*Q6 Alarm and fault indicators, if failing, 
may not be corrected with these flow charts. 
However, when an indication does appear, it is 
used as an aid in finding that particular fault. If 
a fault occurs and the fault indicator does not 
function, the PCB on which the indicator is located 
is to be replaced at the first opportunity. 
03.W The following precautions must be 
observed when handling PCBs. 
Drop a PCB. 
Stack one PCB on top of another. 
Handle a PCB without discharging any static 
electricity from your person by touching 
the grounded DCEC. 
Touch PCB contacts with your fingers.  
						

							START AND END OF 
A FLOW CHART SEQUENCE 
IMPORTANT NOTES 
AFFECTING THE FAULT 
CLEARING PROCEDURE 
PROGRESSION TO OR FRO 
ANOTHER FLOW CHART LOC 
LETTER WILL DENOTE EXACT E 
0 
OR EXIT POINT TO/FROM SPECIFIC FLOW CHART (FC) 
I 1 
STATEMENT OF A 
REQUIRED ACTION 
When defective PERCEPTION appa- tag can remain attached during the testing and 
repair process. 
ratus is shipped for repair, the apparatus must CM.03 If different and/or additional faults are 
be packed in a suitable container (an original created in the system by substituting a PCB, tag 
type box is highly recommended). and return the substitute PCB as a defective unit. 
a) Anti-static containers for all PCBs. 
b) Plastic bags for EKTs, Attendant Consoles, 
etc. 
NEVER WRITE ON THE APPARATUS 
ITSELF! Describe the nature of the defect on an 
information tag, and attach the tag to the front 
of the unit with string (not wire) so that the In the following flow charts two differ- 
erms are used when refering to single line 
telephones. If “2500” is used, a DTMF standard 
telephone with “Touch-tone” dial pad is being 
referenced. If “STT” is used, DTMF and rotary 
dial sets are being referenced.  
						

							5) At the modular block, measure the resistance 
between all wire combinations. The proper 
NOTE: 
Perform the following at the locations in- 
dica ted: 
7. Modular block: Check all station cables. 
2. MDF: Check cables from DEKlJ to MDF. 
1) Disconnect the EKT. 
2) Using a DC voltmeter, measure between the 
wires of the two pairs to verify the presence 
of the following readings: 
24 
24 
24 
1 R Red 2 R Yellow 24 
I T Green 1 R Red 0 
2 T Black 2 R Yellow 0 
3) An improper reading indicates an open, crossed 
or shorted wire. 
4) For the fvlDF-to-EKT cable, a more precise 
check is made using an ohmmeter per Table B. 
*Nominal voltage-within the power supply 
limits of 23.2~28.2 VDC while under AC 
power. 
1) Disconnect the EKT at the wall. 
2) At the iVlDF, remove the bridging clips. 
3) Using an ohmmeter, measure the resistance 
between all combinations of the four wires 
at the modular block. All measurements should 
exceed 1 MOhm. 
4 NOTE: 
Perform the following a-t the locations in- 
dica ted: 
1. Modular block: Check all station cables. 
2. MDF: Check cables from DSTlJs to MDF. 
I) Disconnect the STT at the wall. 
2) At the MDF remove the bridging clips. 
3) Using an ohmmeter, measure the resistance 
between the two wires at the modular block. 
The measurement should exceed 1 MOhm. 
4) At the MDF, place shorting jumper wires 
between the two wires (T and R). 
5) At the modular block, measure the resistance 
between T and R. Verify maximum 300 ohm. 
.) At the MDF, place shorting jumper wires 
between the T and R of pair #‘i (green-red) 
and the T and R of pair #2 (black-yellow). readings are as follows: 
*NOTES: 
7. The green-red and black-yellow measure- 
ments sould be within 10% of each other. 
2. 55 ohm is a maximum reading.  
						

							Please read the 
maintenance 
procedures before 
Start here to 
classify faults gn 
the PERCEPTION 
YES 
Switch main circuit 
breaker (power) 
to ON. 
* Wait approx. 30 
seconds for the 
system to load. NOTE: See Section 
IO@ 100-200, 
Installation, 
Paragraphs ll.Ol& 
11.02 (System 
Power-up). 
NO  
						

							To 
NO 
To 
NO 
YES 
NO 
YES 
NOTE: This is 
no fault. To 
extinguish the 
LED, set time and 
date on attendant 
console or with 
the LYTRF Program. Fro 
FALT LED on 
NO 
NO 
NO 
NO 
To 
YES 
To 
NOTE: Verify