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tone Sequence whereby tone 'A' is also accepted. In case of successful decoding the loudspeaker
and the handset are switched on, the loudspeaker lamp ashes, and the bell tone is started. An
acknowledgement is not transmitted.
Emergency Call Decoder
The emergency call decoder is coded in register 004 (EEPROM 1). If this decoder is not required,
please code an 'F' at the rst digit of the tone sequence. The read in 5-tone sequence is compared
with the emergency coding. From the second up to the fth digit those positions being coded with
'F' will accept all tones of the tone system. In case of successful decoding the loudspeaker and
the handset are switched on, the loudspeaker lamp ashes, and a time window with a duration of
three seconds is opened. The rst tone sequence to be received within the time window closes the
time window, and is then stored as emergency call, and ashes on the right display. As long as an
emergency call is indicated on the display, the keypad is blocked with exception of the PTT button and
the 'F1' key. The emergency call number can be deleted only with the 'F1' key.
Conference Call Decoder
The conference call decoder detects a tone of at least one second duration. After detection the
loudspeaker and the handset are switched on, the loudspeaker lamp ashes, and the bell tone is
activated. No acknowledgement is transmitted. The conference call tone frequency is coded at digit
2 of register 046 (EEPROM 1) with the corresponding digit of the tone system ('0' ... 'E') . If this
decoder is not required, please code an 'F' at that digit.
ID-Code Memory
Function
The ID-code memory can be congured so that it is optimally adapted to current use. Up to 16
ID-codes can be stored. If all memory positions are engaged, the memory is updated by deleting the
oldest ID-code. The stored ID-codes can be scrolled through by pressing the (M) key in such way
that the ID-code stored last is displayed by the rst key pressing. The currently displayed ID-code
can be deleted from the memory by pressing the (*) key. If the "FIFO" function is switched on, always
the oldest number is shown on the display by pressing the (M) key, and only after deleting this
ID-code the next ID-code follows. The "FIFO" function is programmed at the rst digit of register 033
in EEPROM 1 ('0' = off, '1' = on). The ID-code memory can be used for single or double sequences.
In case of double sequences the rst or the second tone sequence is stored according to the
"ID-Mode" switch. The "ID-Mode" is programmed at digit 3 of register 033 in EEPROM 1 ('0' = 2nd
tone sequence, '1' = 1st tone sequence). The storing of an ID-code can be signalled by a beep tone
which can be programmed at digit 2 of register 033 in EEPROM 1 ('0' = off, '1' = on). The ID-code
memory can also be used as call-back memory. In order to avoid acknowledgement sequences to
get into the memory, the ID-code memory can be blocked for n * 100 ms after every call transmission.
The blocking time is programmed at digit 2 of register 041 (EEPROM 1).
Monitor
If every ID-code has to be stored, digit 3 of register 021 (EEPROM 1) has to be programmed with
a '1'. Now every ID-code is compared with the key tones and, if the test is positive, it is transferred
to the ID-code memory. But if the system is operating with double sequences, the monitor switch
must remain in "off" position ('0').