is it possible to detect 4 length pattern busy cadence detection on FXO lines in 1.8??
Here the tones are:
425Hz Pattern(0.2ms on, 0.2ms off, 0.2ms on, 0.6ms off)
in asterisk 1.4 busy detect worked
in asterisk 1.6 didn´t work and i was told that 1.6 can´t handle 4 length patterns, but what about 1.8??
for now I can only hangup by asking the provider polarity switch.