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FXO Last modified: Monday, February 28, 2005
Acronym for Foreign Exchange Office FXO is the interface on a VoIP device for connecting to an analog PBX extension.
Enterprise VoIP Planet The IT Manager's Guide to Voice over IP The Difference between FXS and FXO (PDF) This Patton Tech article provides an in-depth look at both FXS and FXO.	Related Categories Communications Internet Telephony Telecommunications Related Terms Internet telephony PBX VoIP