[asterisk-users] the FXS ports of Digium and damaging if connected to Tel Line

[bilal ghayyad]

Hi All;

I am facing a problem that always the users confused and connect the telephone line coming from the telephone service provider to the FXS port and cause it to be damaged, specially if the card was 2 fxs and 2 fxo, so they make mistake and connect the line to fxs while it should be connected to fxo.

What is the solution for this disaster? 

Regards
Bilal