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I was checking the site and are FXO cards used for connecting to POTS or analog extensions?
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FXO is used for connecting to POTS lines.<br />
FXS is used to connect to telephones faxes or anything you would normally plug into a POTS line.
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I am working on setting up an Asterisk VoIP server for an office with 3 POTS lines and 8 extensions. &nbsp;I am looking for some recomendations for phones, server hardware, etc. &nbsp;I dont want the absolute cheapest stuff but it needs to be decent.<br />
Thx,<br />
JMK
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I am working on setting up an Asterisk VoIP server for an office with 3 POTS lines and 8 extensions.  I am looking for some recomendations for phones, server hardware, etc.  I dont want the absolute cheapest stuff but it needs to be decent.
Thx,
JMK

I was checking the site and are FXO cards used for connecting to POTS or analog extensions?

FXO is used for connecting to POTS lines.
FXS is used to connect to telephones faxes or anything you would normally plug into a POTS line.

Asterisk Hardware

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).