Here is an excellent document explaining the differences between FXO and FXS. http://www.google.com/url?sa=U&start=5&q=http://www.patton.com/technotes/fxs_fxo.pdf&e=7385
Also you can look at Digium's site for their description, which describes it from a stand point of Asterisk as the PBX. http://www.digium.com/index.php?menu=fxsvfxo > 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? _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
