Toa CPU-52A User manual

CPU-52A
Functions and
Operating Instructions
TOA ELECTRIC CO., LTD.
KOBE, JAPAN

Master Station
Keyboard Allocation
Keyboard Functions
Standard Functions
Optional Functions
Conference
Personal number call
and single-digit
number programming
MIC-Off
Paging
Paging response,
priority,executive
priority
Clear entry
Single-digit dialing
Conversation over
Regardless of the station keyboard, the following functions are included as standard.
Automatic Line Release
When, in dialing, all of the numbers are not dialed within 5 seconds, the station is automatically disconnected
from the speech path and dialing cannot be completed. In this instance, the dialing process will have to be
repeated from the beginning.
This function has been adopted to speed up traffic processing and to improve the availability of speech paths.
Camp-On-Busy
When the party you are calling is on another line, by simply waiting you automatically "Camp-On" the line.
(Busy tone sounds continuously.) As soon as the line is freed, you will be automatically connected.
Camp-On-Privacy
When the party you are calling has his station on Privacy mode, by simply waiting you will automatically
"Camp-On" the line. (Busy tone sounds countinuously.) As soon as the Privacy mode is released, you will be
automatically connected.
— 1 —

STANDARD FUNCTIONS
Name of function
Description of function
Operation
Privacy
When a party does not wish to accept incom-
ing calls, this function may be employed to
refuse them. With the Privacy switch in the
ON position, a continuous privacy tone will
be sounded in the station making the call,
and at the same time, a brief Privacy tone will
sound in the station called, indicating a call
attempt is being made.
Shift Privacy Switch to ON.
PRIVACY
ON
To restore a station in the "Privacy" mode to
a normal condition, and thus ready to receive
or make calls.
Shift Privacy Switch back to the left.
PRIVACY
ON
Note 1:
A call received while the station is in the
Privacy mode may be accepted if the Privacy
function is immediately cancelled, (see Camp-
On Privacy)
Note 2:
With a station that incorporates the Secretary
Transfer function, the Privacy switch is used
to activate the Secretary Transfer function,
(see Secretary Transfer)
Note 3: During the above "Privacy" mode, while
the calling station has the PTT bar depressed,
the privacy tone stops and the caller can
transmit a one way message.
When the PTT bar is released, the normal
"Privacy" mode to be resumed.
Mic Off This function is used when for one reason or
another it is desirable to stop a conversation
temporarily. With this function in use, a hold-
ing tone is transmitted to both the calling and
the called station while the conversation is
interrupted.
Touch dialing of during a conversation
turns off that station's microphone, and a
holding tone is heard at both stations involved.
When it is desirable to resume the conversa-
tion interrupted with the Mic-Off function,
the function may be cancelled by the Party
who operate the Mic-Off.
Touch dialing again cancels the Mic-Off
function, and the conversation can be resumed.
— 2 —

Name of function
Description of function
Operation
Personal Number Call
Those who are frequently away from their
assigned station, as well as those who share a
single station may be assigned a "Personal"
4-digit number which may be programmed to
any master station in the system. This perso-
nal number, which is completely independent
of station numbers, may be programmed at
any master station, and any previous program-
ming of that same number at any other
station is automatically cancelled. When the
party calling has dialed the number to which
he wishes to speak, the call is then routed to
the station at which the Personal Number was
last registered. The numbers which may be
assigned in this group are 1000 through 1499.
A personal number may be registered at any
master station which the person to whom the
number is assigned expects to be. A party wish-
ing to receive personal number calls at a speci-
fic station may register his number at that
station by touch dialing
plus his personal
number on that station's key pad.
Note: When anyone having a personal number leaves
the office, he merely cancels the programming
of his personal number. With the personal
number cancelled, any incoming calls to that
number will be answered by a dial tone,
indicating that he is not available.
Personal number program cancellation can be
done at any station by merely dialing:
Personal Number
Press-To-Talk
(Selected Simplex)
Employed when a person in a high noise level
area is called by a person in a quiet area, or
when no particular response is required, or
when simple announcements are made. In such
cases, one-way conversation flow can be
used.
This function is activated when the
PTT
(Press-To-Talk Bar)
is continuously depressed after dial tone con-
firmation or during conversation. This allows
one-way conversation from the party depressing
the function key. When the key is released, one-
way conversation is reversed.
One-way conversation is activated while the
Press-To-Talk bar is continuously depressed.
As long as the Press-To-Talk bar is depressed
by either party, the voice of the party using
this function has dominance. When the key
is released, the other party has dominance.
One-way conversation is reversed when the
Press-To-Talk bar is released.
To return to ordinary hands-free 2-way con-
versation .....
Depress the key twice.
Note: If both parties depress the Press-To-Talk bar,
the voice of the party who depresses the bar
last will have dominance.
— 3 —

Name of function
Description of function
Operation
Single Digit Dialing
This function allows for Single Digit Dialing
to any pre-programmed station number, per-
sonal number, paging area 1 zone, any 2-, 3-
or 4-digit number.
Only one single digit dialing number may be
programmed at any one station. In the event
another number is programmed under this
function, the previously programmed number
is automatically cancelled. Paging is an optio-
nal function. Therefore, Single Digit Dialing
for paging purposes is only available if the
paging option has been included in the
system.
Single digit dialing may be made a function of
any master station in the following manner:
On the station which will be the calling station,
touch dial plus
Station number
Personal number
any 2-digit number
any 3-digit number
any 4-digit number
or
touch dial
plus
or plus
paging zone number
The station, personal number, zone, any
2-, 3- or 4-digit number can then be called
by simply touch dialing
Note:
At the station where the function is not used
program the station number by touch dial
(Own station number)
Master/Substations
With respect to this function, the stations in
the system are divided into two categories;
master stations and substations. Any master
station can be connected to any other station
in the system. However, substations can initi-
ate calls only to specific master stations. This
is done by single touch dialing, and will only
connect the substation to one specific master.
Master/Substation associations are set up by
using station #200 as the programming sta-
tion. Once these relationships have been es-
tablished, substations can then contact their
designated master stations by simply touch
dialing
Note 1:
Several substations can be programmed under
this station to connect with a signal specified
master station.
Note 2:
Programming a master station for Single Digit
Dialing of a substation number under this
function is programmed in the same manner
as other single digit dialing, and results in one
touch dialing from master to substation.
To register single digit dialing as in Note 2,
touch dial
plus
plus the station number
of the substation. Single digit dialing from
that master to a specific substation is then
accomplished by touch dialing
— 4 —

Name of function
Description of function
Operation
Secretary Transfer This function allows a secretary to accept all
incoming calls placed to an executive.
This function is only available when a speci-
fied station is programmed for this purpose
with use of Station #200 in the programming
mode. Automatic transfer of incoming calls
by an executive to his secretary is accomplished
by placing the Privacy Switch on his station
in the ON position.
It is also possible for the executive to accept
calls at his station.
For the executive to accept calls directed to
his station once the automatic secretary func-
tion has been programmed by station #200, he
simply moves the privacy switch to the left, or
OFF position.
There is no limit to the number of Executive
Secretary pairings except by the number of
available number combinations within a given
system.
Note1: Adoption of the optional function "Transfer"
allow re-routing of the call transferred to
the secretary back to the executive's station.
When the secretary answering a call touch dials
(executive's station number), the
privacy tone sounds continuously at both ends
of the line, while the call is held. The call
holding tone is transmitted to the calling
station. If the executive shifts the privacy
switch to the left position, he can talk with
the secretary. If the call held is to then be
transferred back to the executive's station, the
secretary is to touch dial
and the original
calling station will be connected to the execu-
tive's station.
Adoption of the optional functions "Trans-
fer" and "Single Digit Dialing" allows simple
retransfer of the call transferred to the sec-
retary back to the executive's station.
Note 2:
Touch dial
(Executive's
station number) at the secretary's station in
advance. When the call transferred to the
secretary has to be transferred back to the exe-
cutive, the secretary simply touch dials
at
her station. This sets the privacy tone sounding
continuously at both ends of the line while the
call is held, and the holding tone is transmitted
to the calling station.
If the executive now shifts the privacy switch
to the left position, he can talk with the
secretary. If the call is to be transferred back
to the executive's station, the secretary touch
dials
The calling station will then be con-
nected to the executive's station.
With respect to Note 1 and 2
7
if there is no
reply from the executive, the secretary touch
dials This will then return the secre-
tary to the original call.
— 5 —

OPTIONAL FUNCTIONS
Described below are optional functions which are available on request.
Name of function
Description of function Operation
Conference
A "Hands-Free" conference call can be made
with up to 4 persons. For a conference under
this function, the other participants may be
called either through their station number,
personal number or by Single Digit Dialing.
Addition of stations or personal numbers
(total of only 4) may be added by anyone
already connected.
The person who proposes the conference may
dial, for example, (the Sta-
tion Number of the 1st of the participants).
After receiving his consent, he may then dial
(the Personal Number
of the 2nd participant). After receiving his
consent, he may now dial
(the Single Digit
Dialing of the last participant).
At this point, the 4-man conference may
begin. It is also possible for any of the 4
participants to call up any of the other
participants.
Any of the participants who wish to drop out
during the conference may do so as long as
it's not the party who originated the con-
ference.
A person wishing to drop out of the confe-
rence should dial at his station.
In the event that the calls made by the person
arranging the conference are not answered or
that there has been a dialing error, the func-
tion can be cancelled for restoration to the
normal mode.
The function is cancelled and the normal mode
is restored when the person who arranged the
conference dials
When the conference has been terminated by
the party who originated it, the other partici-
pants cannot continue the conference.
The conference is terminated when the party
Either of the parties in conversation is to dial
(the Station Number of the
third party).
It is possible for persons in normal conver-
sation to change to the Conference mode
without interruption.
who arranged the conference dials
This function allows either party to transfer
that call to another station. The party to
whom the call is to be transferred, may be
called using either the Station Number, the
Personal Number or through Single Digit Dial-
ing.
During the conversation, first dial
(the Station Number of the person the call is
to be transferred to).
The original call is then held and the holding
tone is transmitted to the other party, while
the third party is called and asked whether he
will accept the call. If he agrees to accept the
call, dial and the transfer will be com-
pleted.
Note:
Call Transfer
Note: The Transfer function is combined with the
Call Holding function.
When two parties are talking, either one can
be temporarily placed on hold to permit the
calling of another station. The conversation
with the third party over, the original conver-
sation can be resumed.
The third party can be called using either the
Station Number, his Personal Number or
through Single Digit Dialing.
During the conversation, first dial
(the Station Number of the third
party). The other party is then placed on hold
with the third party over, dial and the
original conversation may be resumed.
— 6 —
as the third party is called. The conversation

Name of function
Description of function
Operation
Paging
This function allows paging from any master
station. Individual 7-area paging and All-Call
paging are possible.
7-area paging is feasible in the form of Zone
Paging with an external PA system(s) and/or
Group Paging using station speakers.
7-area paging means that the total number of
zones and/or groups that can be paged is limit-
ed to 7.
All-call paging covers all paging zones.
Dial at any master station.
(Paging area) 1 through 7, or
All-Call paging
for the desired paging zone. It is possible to
wait for a response in this mode but anything
spoken at the station is then broadcast. If this
is not desirable, paging may be terminated by
dialing
while waiting for the response.
The paged party is to answer from the nearest
station.
He can respond by simply touch dialing
plus the zone number from which the page
originated. This, of course, makes it necessary
for the person making the page to identify
his area or zone during the page. As an ex-
ample, the page would be made, "Mr. XX,
please respond to page Zone 1" or perhaps
more simply, "Mr. XX dial
Note 1:
Note 2: Combined use of the Paging and Transfer
functions is possible. The results of such a
combination of features would amount to
putting one party of a two-station connection
on Hold while the other party made a page
and received its response.
Note 3:
In order to do this, during the conversations,
touch dial
plus the zone number into
which a page is to be directed. Immediately,
the station to which the paging station has
been connected is put in a holding mode.
After the paging announcement, touch dial
and wait for the response under original con-
versation mode. On responding the party who
paged is connected to the responding party.
The original conversation may be continued
by simply touch dial again.
Zone Paging
Zone paging can be done from any master
station if an external PA system is available.
Group Paging
Even if no external PA system is available,
paging to all stations in a given area can be
done from any master station, although this
mode of paging cannot be made to stations
which are occupied. Normal calling can also
be made from the station through which the
paging voice is being heard, but the paging
will be interrupted in such cases.
This function is convenient for stations
that normally only receive calls and do not
have to call other stations.
Talk-Back
First, call the "Talk-Back" station as in a
normal call.
("Talk-Back" station).
The Calling tone will sound and the message is
transmitted. In this case, while the calling sta-
tion has the Press-To-Talk bar depressed, the
caller can transmit a one-way message. When
this bar is released, the "Talk-Back" station
can give a one-way message to the caller.
— 7 —

Name of function
Description of function Operation
Priority When the called party is already on the line,
the party calling, if he deems it necessary, can
send a Priority signal to the called party. After
a response from the party called, the urgent
call is allowed to take priority and go through.
When the party called is on the line, as indi-
cated by the busy tone, dialing
transmits
a priority tone to the called party. The same
tone is audible at the calling station. The call
is connected if the called party also responds
by dialing
In this event, the original con-
versation partner of the party called is tem-
porarily placed on hold and the holding tone is
transmitted to his station.
Upon completion of the priority conversation,
the party who placed the priority conversation
dials at his station. This allows the inter-
rupted conversation to resume.
Executive Priority When the called station is busy or in the
"Privacy" mode, this function allows forced
interruption for priority conversation.
This function is available only for those sta-
tions specifically programmed for this func-
tion, with programming station #200. When
the station called is busy or in the Privacy
mode, as indicated by the busy or privacy
tone, dialing
sends a priority tone. This
priority tone is transmitted for a few seconds
and then the call is put through.
In this event, the original conversation partner
of the party called is put on hold and a hold-
ing tone is transmitted to his station.
Upon completion of the priority conversation,
the party placing the priority call dials
at
his station to allow the original conversation
to resume.
NOTES
the conversation, dial
This will restore the condition before the error was made, allowing the caller to
make a correction without interrupting the call.
To terminate conversation, dial
— 8 —
In the event that an error has been made when dialing for Transfer or Conference, at the start of or during

Printed In Japan
133-02-472-0
TOA ELECTRIC CO.,LTD.
KOBE, JAPAN