OPERATION
3-1-40
Selecting alternative tone standards
The
[Select Standard]
key causes the
Tone Standard Selection Menu
to be displayed, see
Fig. 3-1-34.
Fig. 3-1-34 Tone standard selection menu
The tone sequential standard to be used is selected by pressing the appropriate soft key.
This menu also shows the frequency and timing characteristics for each tone in the standard.
User 1 and User 2 are user defined tone standards stored in non-volatile memory.
Editing a tone standard
Pressing the
[Edit Standard]
key when in the
Sequential CALling Tones Utility
menu
(Fig. 3-1-31) will produce the
Edit Sequential Tones
Utility, see Fig. 3-1-35, which allows a user
defined tone system to be set up.
All editing is carried out in a tone standard called TEMP which is not stored beyond
switch off. To ensure that the alterations are available for future use the newly defined tone
standard must be saved to non-volatile storage in either USER1 or USER2.
The editing facility allows the user to define the frequency of each of the 16 tones in the
system and to set the default duration of each tone in the sequence and the gap between tones (if
any). All other settings are handled in the normal
Sequential Tones Utility
menu.
The currently selected tone standard may be copied into the TEMP working space using
the top left soft key (shown
[CCIR to TEMP]
in Fig. 3-1-35) and often this is a convenient way
to start, particularly when the user defined system is similar to one of the standard systems.
To edit the system in TEMP use
[Tone Number]
to select the number of the tone to be
edited (0 to 15) and after pressing
[Tone Freq.]
enter the new frequency to be assigned to this
tone number. Select other tones in the system by means to the
[Tone Number]
key or use the
[Next Tone]
and
[Previous Tone]
keys to step through the list. Enter the frequencies of the tones
and then use
[Default Duration]
and
[Tone Gap]
to set the times in milliseconds for the default
duration of each tone and the gap between each tone.
Finally store the user defined tone system parameters in USER1 or USER2 by pressing
[Store to USER1]
or
[Store to USER2
].
EEA
EIA
NATEL
DTMF
USER1
USER2
LOCAL
EURO
CCIR
DZVEI
ZVEI1
ZVEI2
EXIT
Tone Standard Selection Menu
Current Standard: CCIR
C0012
Tone 0: 1.9810 kHz
Tone 1: 1.1240 kHz
Tone 2: 1.1970 kHz
Tone 3: 1.2750 kHz
Tone 4: 1.3580 kHz
Tone 5: 1.4460 kHz
Tone 6: 1.5400 kHz
Tone 7: 1.6400 kHz
Tone 8: 1.7470 kHz
Tone 9: 1.8600 kHz
Tone A: 2.0000 kHz
Tone B: 930.0 Hz
Tone C: 2.2570 kHz
Tone D: 991.0 Hz
Tone E: 2.1100 kHz
Tone F:
0 Hz
Default Duration : 100ms
Tone Gap
:
6ms
