FXO & FXS Cards

Because voice over IP is digital, often a standard PC or server is used for the PBX. Those VoIP PBX's (aka IP PBX) need PCI interface cards to connect to analog telephone lines, digital T1/E1 lines, analog telephone handsets and fax machines. This category contains PCI interface cards from the leading manufacturers in the industry. If you are using Asterisk IP PBX or a variant such as trixbox, Elastix, AsteriskNOW, FreePBX and need to connect it to something, we are here to help. For our complete IP PBX Interface Buying Guide please browse to the bottom of this page.