[Asterisk-Users] Diffrence bewteen FXO and FXS

[Jean-Michel Hiver]

Mr AG!! wrote:

>Why are there FXO cards, and FXS cards? What's the difference, and why
>is it needed? Modem cards, seem to be able to dial out, and receive
>calls, so why are these cards different?
>  
>
FXO card = plug to phone line
FXS card  = plug to regular phone

FXS provides power to phone. FXO takes power from phone line.

Don't plug PSTN in your FXS card or you could fry it...

Cheers,
Jean-Michel.

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