
DS1148-014D 13
The keyboard has 2 basic modes for dialling the phone numbers (parameter 49).
•Direct choice of phone numbers – press numbers on the keyboard like you
would on a phone (max. 24 digits)
•Choice from the door system’s memory – press only 2 digits on the
keyboard i.e. a memory address (01- 99). This option saves the connected
buttons, as it is easier to use a smaller number of buttons for direct dialling
from the memory file if you have a larger number of users.
Note: button 1 on the basic module uses the same memory of telephone number as
option 01 on the keyboard – there memory for up to 99 day-time numbers and 99 night-
time numbers, the keyboard uses the same memory as the buttons!
You can set the DTMF dialling option with parameter 40 during a phone call (section
Programming).
Whatever programming is made, the button disconnect or cancel.
2.5 INSTALLATION OF THE DEVICES
Flush mounting
For this type of installation use the mounting boxes 1145/51-52-53-54 and possibly the
rain hood 1158/611-612-613-614. Be careful about the orientation of the openings; for
the assembly if you use the built-in box 1145/51 - must be in vertical axis.
The protective frame, which provides the coverage of the irregularities once walled box,
and the rain hood, needed for the installations in outdoor areas, constitute other
accessories useful for this type of installation.
Wall-mounted installation
For this type of installation use the enclosures with built-in rain hood 1148/311-312-313-
314. If your installation is in an environment with the possibility of condensation (sudden
temperature changes) or rain, it is recommended to put the DIP switch 2 in position ON
- Active heating.
The board heating has two positive functions: in part heats the circuits in winter and in
part prevents the formation of condensation inside it.
2.6 CONNECTION
The basic function (activation and deactivation of a call) only requires the connection of
a telephone line (Img. 1 Line 9). The line is connected with two conductors (a, b) and
generally has a voltage of 24V - 60V, short circuit 20mA - 60mA. During the
conversation, the line voltage is 7V - 10V.
Line Activation – The 1148/1 or /2 Sinthesi S2 module emits a tone (Reset) if it was
previously disconnected from the line for a certain period of time (see tone table of the
complete manual).
The 1148/1 or /2 Sinthesi S2 module is an analog combiphone designed to be
connected to an analog telephone line. The polarity of the telephone line is not relevant.
The module works based on the configuration of the programming parameters.
Parallel connection - it is not recommended, because the parallel connection with
another door phone or telephone line causes technical problems. Also it is not possible
to use different devices for a line switching (adapters of intelligent line, etc.).