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ft635ule_eng (21.06.2012)
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ft635ule _eng(21.06.2012)
Kompetent für Elektroniksysteme
Kompetent für Elektroniksysteme
Reg. Function
368 1.- 3. digit: maximum duration of dial tone nnn * 1s
Configuration table for call progress tones
There is a configuration table for call progress tone detection in the EEPROM. In this table
you can define which tone/pause ratio will be detected as dial tone or busy tone.
Ex factory this table has already been programmed with two possible dial tones and with four
possible busy tones. In rare cases with some PABXs (Private Automatic Branch Exchanges)
or with certain AF noises on the telephone line there can be problems with call progress
tone detection. These usually can be solved by reprogramming or complementing this
configuration table. The table consists of maximally 19 entries (registers), each of which
shows a tone/pause ratio. By combining several entries complex call progress tones can
be decoded which consist of a combination of different tone/pause ratios.In this way it is
also possible to program the detecting of tones only after they have been decoded several
times in sequence.
If new call progress tones are to be programmed the exact periods of time of the new call
progress tones must be known. To facilitate this the UELE can output the current times.
Ex factory the following tones have been programmed:
dial tone:
- 1s tone / 4s pause
- 1s tone / 5s pause
busy signal:
- 400ms tone / 400ms pause / 400ms tone / 400ms pause
- 500ms tone / 500ms pause / 500ms tone / 500ms pause
- 240ms tone / 240ms pause / 240ms tone / 240ms pause
- 160ms tone / 480ms pause / 160ms tone / 480ms pause
Reg. Function
380 1. digit : exchange tone decoder n * 3,125%
380 2.- 4. digit: tone duration for continuous tone decoding nnn * 10ms
380 5.- 7. digit pause duration for pause decoding nnn * 10ms
380 8. digit: indicate decoded exchange tone times y/n (1/0)
381 - 399:
1. digit: type of exchange tone:
0=continued line
1=dial tone
2=busy tone, F=free
2.- 4. digit: tone duration nnn * 10ms
5.- 7. digit: pause duration nnn * 10ms
As examples the ex factory preset tones are described here:
Register Content - Meaning
Tone duration
Pause duration
381 11004000 dial tone
1s
4s
382 11005000 dial tone
1s
5s
383 20400400 busy tone
400ms
400ms
384 00400400 continuation
400ms
400ms
385 20500500 busy tone
500ms
500ms
386 00500500 continuation
500ms
500ms
387 20240240 busy tone
240ms
240ms
388 00240240 continuation
240ms
240ms
389 20160480 busy tone
160ms
480ms