We have customer that requires specials tones to be passed from one to location to another location via cisco routers with FXS cards. The call has to be always off-hook and its should just pass the tones with any conversion end to end. Has anyone configured this on gateway before?
The flows is "Tone->FXS->Router(FR,ATM,IP)->Router->FXS->Tone management system".
These are special tones for train signals.