User`s manual
4,291,198
3
FIG.
7
illustrates
a
mechanical
interlocking
arrange
ment
for
facilitating
the
assembling
of
the
station
set
elements
into a
compact
integral
housing;
FIG.
8
shows
illustrative
station
set
display
sequences
in
conjunction
with
screen-line
buttons
to
demonstrate
use
of
the
station
set;
and
FIGS.
9-15
are
process
diagrams
illustrating
opera
tion
of
the
station
set
in
several
illustrative
processes.
DETAILED
DESCRIPTION
In
FIG.
1,
the
illustrated
general-purpose
electronic
telephone
station
set
10
comprises
a
housing
including
a
base
11
and
a
hood
12.
The
base
encloses
most
of
the
electric
circuit
components,
to
be
described,
and
in
cludes
a
data
processor
for
coordinating
the
interactions
among
the
other
station
set
elements.
The
hood
12
is
attached
to
the
base, as
will
be
subsequently
described,
and
encloses
display
apparatus
including
a
screen 13
of
a
cathode
ray
tube
enclosed
within
the
hood
12.
Thus,
the
display
accommodates
page-type
text
displays
for
?exible
user-computer
interaction.
The
station
set
in
cludes
several
different
types
of
keys
collectively
desig
nated
as
a
keypad.
One
of
these
types
includes
a
plural
ity
of
screen-line-associated
pushbutton
keys,
such
as
the
key
16,
arrayed
in
two
columns
adjacent
to
the
two
sides
of
the
screen
13.
A
handset-receiving
receptacle
is
provided
along
one
side
of
the
station
set
adjacent
to
the
hood
12
for
receiving
a
handset 17
which
is
electrically
connected through
an
electric
circuit
cord
18
to
other
circuits
of
the
station
set.
A
loudspeaker
(not
shown)
is
contained
within
the
base
portion
11
and
acoustically
coupled
through
holes
19
in
the
receptacle
beneath
the
handset
17.
The
receptacle
also
contains
an
actuating
member
(not
shown)
beneath
the
handset 17
for
operat
ing
a
telephone
system
switchhook
in
a
manner
well
known
in
the
art.
A
keyboard
20
is
provided
and
is
advantageously
below
and
in
front
of
the
screen
13.
The
keyboard
in
cludes
a
plurality
of
keys
for
various
purposes
as
will
subsequently
be
described
in
connection
with
FIG.
2,
and
it
is
advantageously
of
a
width
corresponding
to
the
width
of
the
screen
13
and
the
two
columns
of
keys
16.
A
principal
purpose
of
keyboard
20
is
the
entry
of
al
phanumeric
text
material
for
display
on
the
screen
and
for
use
otherwise
in
controlling
data
processing
within
the
set
and
within
a
host
computer.
The
total
width
of
the
keyboard
depends
upon
the
degree
of
convenience
desired
for
actuating the
keys
thereof
and
ranges
from
a
relatively
narrow
keyboard
suitable
for
two-?nger,
full-text
typing
in
one
embodiment
to
a
wider
keyboard
which
is
more
convenient
for
tough-typing.
A
separate
subscriber
loop
circuit
21
and
data
signal
circuit
22
are
provided
for
the
station
set
10
to
effect
communication
with
external
systems.
It
is
to
be
understood,
however,
that
in
an
appropriately
controlled
arrangement
both
voice
and
data
can
be
combined
onto
a
single
circuit
pair
by
either
frequency
or time
multiplexing
arrange
ments.
Handset
17
provides
a
convenient
measure
of
the
station
set
size.
In
one
embodiment
using
a
Western
Electric
Company
K-type
handset, the
length
of
the
handset
17
is
slightly
less
than
the
front-to-back
depth
of
the
station
set
10
(not
including
any
rearward
extension
to
accommodate
a
portion
of
the
neck of
the
cathode
ray
tube
providing
the
display
screen
13).
In
a
similar
context,
the
set
depth
is
slightly
less
than
the
width
thereof
assuming
a
cathode
ray
tube
arrangement
pro
viding
a
substantially
square
display
screen 13
as
illus
..
5
25
30
40
45
60
65
4
trated.
A
rectangular
display
screen
permits
a larger
text
display
width and
a
wider
keyboard
for
facilitating
more
rapid
touch-typing
in
the
manner
previously
sug
gested.
Thus,
the
set
depth
and
width
are
less
than
one
and
one-halftimes
the
handset
length.
The
height
of
the
station
set
10
is
less
by
about
one-quarter
than
the length
of
the
handset.
In
speci?c
terms,
the
overall
dimensions
(including
rear
extension)
of
one
embodiment
using
the
mentioned
K-type
handset
are
about
9
inches
wide,
10
inches
deep,
and
6
inches
high.
The
result
of
the
described
relative
proportions
in
the
station
set
10
is
that
it
is
convenient
to
place
the
set
on
a
desk
or
a
table
without
obstructing
the
view
of
the
rest
of
a
room
where
a
set
is
used
and
without
dominating
either
the
room
or
the
table
space.
Furthermore,
the
relatively
low
pro?le
of
the
station
set
yields
a
low
center
of
gravity so
that
the
set
is
not
easily
tipped
over.
In
using the
station
set
in
the
embodiment
of
FIG.
1
for
plain
telephone
communication
purposes,
dialing
signals
are
entered
by
utilizing
the
keyboard
20
after
the
handset
has
been
lifted.
Upon
completion
of
the
calling
information
input
for
each
digit,
multifrequency
dialing
tone
signals
are
automatically
transmitted
by
the
station
set
10.
Apart
from
such
telephone
use,
the
keyboard
20
is
useful
for
inputting
information
for
other
purposes.
Furthermore,
the
station
set
interacts
with
a
tele
phone
switching
of?ce
either
in
the
telephone
mode
already
described
or
by
utilizing
the
switching
of?ce
control
processor
as
a
host
computer-based
service.
Likewise,
other
external
host
computer-based
services
are
accessible
through
the
switching
facilities
of
the
telephone
switching
office
or
by
separate
direct
connec
tion to
the
station
set 10.
Many
station
set
functions
considered
herein
depend
for
execution
upon
a
host
computer.
However,
it
will
be
appreciated
by
those
skilled
in
the
art
that
technological
advances
in
minia
turizations
will
permit
a
greater
proportion
of
such
functions
to
be
performed
by
the
set
without
the
aid
of
a
host.
FIG.
2
illustrates
in
a
flat
plan
type
of
view
a rectan
gular
display
screen
13'
and
keyboard
20
opened
to
form
a ?at
diagram
to
facilitate
illustration.
The
keys
16
in
the
two
columns
of
keys
along
the
sides
of
the
display
screen
13’
are
each
associated
with
a
different
adjacent
horizontal
half-line-width
region
of
the
screen
13'.
These
keys
permit
a
station
set
user to
select
a
certain
portion
of
the
text
in
a
display
on
the
screen
and
corre
spondingly
signal
the
selection
to
a
station
set
proces
sor,
and
to a
host
computer
to
which
the
station
set
is
coupled
at
the
time.
Thus,
actuation
of
the
respective
keys
16
do
not
represent
?xed
functions
or
cause
corre
sponding
characters
to
be
displayed
on
the
screen.
Co
operative
use
of
those
keys
16
and
screen
13'
give
the
telephone
set
user
convenient
access
to
computer
ser
vices
as will
be
described.
A
row
of
keys,
such
as
the
key
23,
is
arrayed along
the
bottom
edge
of
the
screen
13',
and
these
are
further
designated
as
screen steady
function
keys.
The
result
of
actuation
of
a
key
23
also
does
not
appear
as
a
particular
displayed
text
character.
These
keys
permit
user
selec
tion
of
predetermined
program
control
options
which
frequently
recur
in
different
steps
of
various
station
set
processes.
Some
examples
include
display
paging
ac
tions
such
as
restart
the
program,
explain the
choices
offered
by
the
current
display,
back
up
to a
prior
pro
cess
step,
or
display
more
information
of
the
type
al
ready
displayed.
Thus,
keys
23
are
display-action
associated
keys
whereas
keys
16
are
display-line