Contestia is a digital mode directly derived from Olivia but not as robust.
It is a compromise between speed and performance.
Contestia has 40 formats which vary in bandwidth (125,250,500,1000, and 2000hz) and also the number of tones used (2,4,8,16,32,64,128, or 256).
The most commonly used formats are 250/8, 500/16, and 1000/32.
Here is a sample of Contestia 250-4