46
MATERIAL REQUIRED
MPS-/MPD Push button panel
module (depending
on characteristics of
the installation)
9670005 MAN - 040 Entrance panel
module with audio
unit with privacy
of conversation,
4+N system
9600003 TES - 001 Electronic telephones
with privacy of
conversation
9620001 ALA - 040 Power supply
9730000 ABR - 001 Electric lock (other
models available)
CMO Flush-mounted box
(depending on
characteristics
of installation)
with speech privacy, for use in buildings with a single
entrance.
Telephones with the privacy of conversation feature
remain inactive until they are called from the entrance
panel. Until a call is received the dwelling telephone is
disabled so that it is not possible to listen to conversations
between other telephones and the entrance panel.
Operation
When one of the push buttons on the entrance panel
is pressed the electronic call signal generated by the
audio unit (7) is sent via the call line to the correspon-
ding telephone (5), where it is heard on the loudspea-
ker of the handset. At the same time the audio unit’s
own loudspeaker generates a sound to confirm to the
visitor that the call has been made.
The telephone receiving the call is activated by con-
necting its electronics internally to the common wire (2)
and the door lock release wire (1). While the telephone
is activated on it is possible to open the door or com-
municate with the caller by picking up the handset.
Once the call is received, the audio unit starts a 30
second timer while it waits for the telephone handset to
be picked up. If the handset is not picked up during this
time the audio unit disables the telephone.
Once the call is received the handset is picked up the
electronics associated to the telephone’s audio lines (3
and 4) is internally connected to the entrance panel.
This connection sets up the communication between the
telephone and the entrance panel. The audio unit then
starts a fresh 60 second conversation period before
disabling the telephone. When only 10 seconds are left
a buzz will be heard. It is possible to restart the timer
either from the entrance panel, by pressing the call but-
ton, or from the dwelling end, by pressing and releasing
the telephone handset’s hook switch.
When the door lock release button on the telephone
is pressed, the audio unit detects the closing of the lock
release circuit (1). The audio unit then sends an a/c vol-
tage (11 and 12) to the electric lock, thus allowing the
entrance door to be opened.
The common wire (2) of the telephone and entrance panel
provides the return path for all the telephone signals. The com-
mon wire is connected while the telephone is active.
V230 V230 V
4+N
TES-001
ALA-040
ABR-001
5
2
2
5
5
5
V
MAN-040
MPD-004
BASIC INSTALLATION WITH ELECTRONIC CALL AND PRIVACY OF
CONVERSATION
MICROPROCESSOR-BASED 4+N SYSTEM
To Next Page
Loading...
Need help?
General
