m4a5a_v320_eng (14.02.2013)
- 48 -
Kompetent für Elektroniksysteme
m4a5a_v320_eng (14.02.2013)
- 49 -
Kompetent für Elektroniksysteme
3. 5-Tone Sequences with Car Numbers and Telephone Numbers (Direct Dial with Tone
Sequences abd DTMF)
- calling a car: 12100-12109 and 12130-12198, 2-digit input
- phone numbers: 12110-12129, extension line: 510-529
- dialing any phone number with 12199 followed by DTMF call
- register 320 = 12199FFF: decodes all tone sequences starting with 12199
- register 330 = 51010000: 1
st
digit: decoding 5-tone sequence
2
nd
digit: initiating call
3
rd
digit: no terminating call with 12199
4
th
digit: send acknowledgement tone to the radio
- register 321 = 121FFFFF: decodes all tone sequences beginning with 121
- register 331 = 53412150: 1
st
digit: decoding 5-tone sequence
2
nd
digit: direct dial
3
rd
digit: 4
th
digit of the tone sequence is the 1
st
variable digit
4
th
digit: the 1
st
variable digit must be 1 or higher
5
th
digit: the 1
st
variable digit must be 2 or lower
6
th
digit: one pre-selection digit
7
th
digit: pre-selection digit = 5
8
th
digit: not in use (only one pre-selection digit is used)
Remark: As decoding stops after a decoder was able to decode the tone sequence, the initiating call
has to be programmed before the direct dial. If the direct dial was programmed first, the initiating
call would be decoded as a direct dial. It would however be rejected in the second step because the
constraint for the 1
st
variable digit is not fulfilled. Still, due to the successful decoding in the first place,
a comparison to the inferior decoders 2-10 would not be performed any more.
Dial Tone Recognition
The recognition of dial tones is of special importance for automatically establishing connections. In the
following, the different dial tones that are recognized by the ULE and their purposes are described.
Dial Tone Recognition before Dialing
"Dial Tone Recognition before Dialing“ causes the dialing to start only after the recognition of the
dial tone. Here, after a waiting time of 18 seconds the dial-up is aborted. For operation at extension
lines this function has to be disabled. In this case, depending on the dialing mode (DTMF or pulse
dialing) dialing starts automatically 3-4 seconds after occupying the telephone line. Ex factory, dial
tone recognition is not activated. „Dial Tone Recognition before Dialing“ is only active, if no prefix
number is programmed (in order to get an outside line).
Dial Tone Recognition after Prefix (for outside line access)
If a prefix for outside line access is necessary for an automatic dial-up, the prefix number (0-9) has
to be composed before the telephone number in all cases (for direct dial as well as for short dial). If
“Dial Tone Recognition after Prefix“ is active, the prefix number is composed and dialing of the desired
number begins only after the dial tone is recognized.
Ex factory, dial tone recognition is not activated.
Reg.
Function
367
4
th
digit: dial tone recognition on/off (1/0)
369
1
st
digit: prefix number for outside line access (0-9, F = no prefix)
Summary of Contents for Major 4a
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