On Sat 08 Jun at 20:54 Lewin Edwards (3:634/396) wrote to Arthur Marsh:

AM> No, but it shows that dial tone detection also fails in 
AM> some supposedly mature modem designs.
 LE> Thing is, the later AutoModem is a standard 144AC 
 LE> implementation and every time Rockwell release new 
 LE> code, things seem to break minorly in this way. It's 
 LE> actually fiendishly difficult to calculate a set of 
 LE> filter coefficients that will detect all the different 
 LE> breeds of service tones in Australia.

Do manufacturers actually make their service tone detection work across the
range of values specified in Austel TS 002?

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