FXO vs FXS: Which VoIP Gateway Does Your Business Need?
Two letters decide how your business connects to the phone network, and most buyers get them backwards. FXO connects to the line coming from your telephone company. FXS connects to the telephone itself. Once you know which side of the cable you are on, choosing a VoIP gateway is straightforward — and picking the wrong one is the most common mistake in VoIP projects. What FXO and FXS actually mean FXO (Foreign Exchange Office) behaves like an office — a fax machine or a phone plugged into a wall jack. It expects to receive dial tone from the carrier. An FXO gateway accepts analog PSTN lines and converts them into SIP trunks for your IP-PBX. FXS (Foreign […]