--- title: "What Does \"On-Net\" and \"Off-Net\" Mean?" description: Sometimes On-Net and Off-Net is used to describe different types of call. --- [Skip to content](https://ukdocs.access4.com/what-does-on-net-and-off-net-mean#main-content) [![Untitled design-3](https://ukdocs.access4.com/hs-fs/hubfs/Untitled%20design-3.png?width=300&height=60&name=Untitled%20design-3.png)](https://documentation.luminatewholesale.com/?hsLang=en) Open main navigation Close main navigation How Can We Help You? - There are no suggestions because the search field is empty. 1. [Access4 UK Knowledge Base](https://ukdocs.access4.com/?hsLang=en) 2. [PBX](https://ukdocs.access4.com/pbx?hsLang=en) 3. [FAQ](https://ukdocs.access4.com/pbx?hsLang=en#faq) # What Does "On-Net" and "Off-Net" Mean? ## Sometimes On-Net and Off-Net is used to describe different types of call. On-Net and Off-Net is used to differentiate between calls that stay on the phone system and calls that leave the phone system to the PSTN network. An "On-Net" call is a call that stays on the phone system, an example of an "On-Net" call would be an internal call from one user to another. If one domain calls a number that is on the same server, this would also stay on the system and be referred to as "On-Net". 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