Intercom Table Telephone
Secret type for double lines
HK100
 The
principle of the secret self-selecting system is, on the one hand, that two
subscribers can be in a call connection, without any other device being able to
listen to the conversation or call the busy devices, and, on the other hand,
that the self-selecting system can be called from a telephone exchange and any
pending connection within the same is obtained and conversely from any device
within the system the central station is directly dialed with the aforementioned
advantages.
The devices are made with a device for 5 central lines in the case of the HK
100/10 and HK 100/15 devices, for 8 central lines in the case of the HK 100/20
and for 10 central lines in the case of the HK 100/30, unless specifically
determined differently. However, these central lines can be used as normal
self-selector lines, in which case the clamp C in the wall bracket will not be
used. Devices with galvanic dialing can also be used in connection with a
central with an inductor system. The lines on which calls are taking place are
not connected in any way to other lines.
The central lines should be connected to the last 5 (or 8 or 10) contacts in the
device, which are specially arranged for this purpose. If several central lines
are used, they are either distributed within the system with one line to each
device, or all the central lines enter one and the same device. In the former
case, each central line is provided with a relay device HK 500 or HK 530, in the
latter case a telephone device with exchange HK 310-315 is used instead of a
telephone device HK 100.
Signal is received regardless of which number the switch is set to.
When the device bell rings, the switch is moved to the position marked with A;
however, if the extra bell rings (which indicates that the signal arrives on a
central line), the switch is turned to the number corresponding to the central
line, after which calls can take place.
If you wish to talk from a device with one of the devices connected to the
network, or if you want to use one of the central lines, set the switch to the
corresponding number, after which a signal is given by means of the push button.
If your own bell does not ring, this indicates that the device or line with
which you wish to talk is currently busy.
The telephone consists of:-
Horizontal microphone RE 2002 with telephone cord
RS 7021.
Wall mount with wall mount cable (see table).
Reverser.
Push button for the release of the signal.
Slide switch.
On special request, a bracket suitable for the
device is delivered, which enables the device to be mounted on a wall.
| Catalogue No. |
Stations |
| HK 100/10 |
10 |
| HK 100/15 |
15 |
| HK 100/20 |
20 |
| HK 100/30 |
30 |
Taken from the L. M. Ericsson Telephone Catalogues 1911, 1923 and
No. 122 (1930) - Swedish translation
|
L. M. ERICSSON