[Asterisk-Users] Unusual protocols

[Linus Surguy]

> examples of things which I have actually been asked about. There are a 
> number of protocols based in 2600Hz tones (most US) and 2280Hz tones 
> (mostly Europe), which are probably still spread quite widely in low 
> density point-to-point connections. If there is anything you need, please 
> tell me about it. I want to build a picture of what might be worthwhile 
> tackling.

You probably won't go far wrong by looking at the support offered by 
www.aculab.com and trying to match it .

Linus