Hi, in general talking:
FXO: Foreign eXchange Office, they "behave" like a phone, it means,
the device who has the interface expects to receive -48 V plus signaling
from the other side. Use this in the cisco router, if you are connecting
to a PBX or telephone company
FXS: Foreign eXchange Station, it behave like a PBX/Central Office,
it generates -48, tones and signals to the connected device. Use this
if you want to connect a router to a telephone
REgards
Sean Lee wrote:
>
> Hello,
>
> What's diff. between FXO and FXS interface cards?
>
> VIC-2FXS
> VIC-2FXO
>
> Thanks!
> Sean
>
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