[Asterisk-Users] Zaptel modules

[Bouchra Benyelloul]

I can't load module wcfxs or wcfxo with modprobe command, I don't have
any error message, and when i try to start zaptel I've the error below
when :
         ZT_CHANCONFIG failed on channel 4: Invalid argument (22)
         Did you forget that FXS interfaces are configured with FXO signalling
         and that FXO interfaces use FXS signalling?

Anyone can help me?
Thanks.