but.... which would be the best option to include 4 PSTN lines into a VoIP enviroment? As I can see that SPA400 (4 FXO Ports) is a cheaper option than a 4 ports PCI card (Rhino/Digium/Sangoma...). Would I get any benefit on using a PCI card instead of a box as SPA400?<br>
<br>Regards<br>