AVT MAGIC TH2, Hardware Manual

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PAGE 18
S y s t e m D e s c r i p t i o n
A separate PRETALK interface provides the possibility for Pre Talk. In the an-
alogue POTS operating mode a standard analogue telephone can be con-
nected to the system. Via this telephone the connection to the subscriber can
be established or a call can be accepted and the Pre Talk can be conducted.
Alternatively, instead of a telephone, a Telephone Handset/Headset (Options:
ID:800203/800204) can be connected. This has the advantage that it is possible
to switch between ON AIR and PRETALK anytime. With a connected tele-
phone this is only possible after the ’ignition’ (= caller is ON AIR) if it has not
been rung off.
In the ISDN operating mode only a telephone handset or a headset can be con-
nected. Using a telephone is not possible.
The configuration and operation can be carried out primarily via the front
keypad and the illuminated display.
The configuration and operation is especially comfortable via the MAGIC
TH2 Software (see CHAPTER 5) included in delivery, which communicates
with the system via the RS232 interface.
The most basic operating functions like accepting a call, dropping a connec-
tion and establishing a connection with a preprogrammed number can be car-
ried out via three programmable TTL contacts. Two relays are available for
status indication.
Optionally, the operation can be carried out via the MAGIC TH2 Keypad (see
CHAPTER 6) that can be connected to the RS232 interface instead of the PC
software.