Can I Connect an IP Phone to an Analog PBX?

March 25, 2020 by Ying-Hui Chen

Our tech support team at VoIP Supply offers great pre- and post-sales support plus provisioning, consultations, configuration, and installation help. We get a lot of VoIP hardware and software questions and would like to share the solutions with everyone. 

In previous Mom’s calling Q&A series, we have discussed: Fanvil X6 IP Phone Failed to Transfer Calls via PBXs. Today, we have more new questions and answers from VoIP users just like you.  

Can I Connect an IP Phone to an Analog PBX?

Q: We have an old digital NEC IP PBX. We are trying to find a way to allow remote users to use IP phones to connect to our phone system as analog extensions. Can I connect an IP phone to an Analog PBX through an FXO gateway? Is there a device that allows IP phones to connect to it, and then hand them off to the phone system as an analog extension?

A: Unfortunately, no. You will need SIP Service to run voice over IP and SIP Service is provided from a provider, not a device. An FXO gateway is for IP Service coming into an analog device. an FXS gateway is for an IP PBX to connect to an Analog endpoint.

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Come back for more VoIP questions and answers next time! If you have VoIP questions to ask us, please submit a technical support ticket or contact our VoIP experts today at (866) 582-8591 


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