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Supported Devices

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OnSIP is an open, standards-compliant VoIP service.

Most SIP devices will work with our network, requiring only a small amount of configuration in order to connect to our systems.

Check out our knowledgebase

We are constantly testing new phones and routers to ensure compatibility with our network. Check out our most up to date list of supported devices in our knowledgebase.

Check out our Phone Reviews

Our team of engineers and support folks are formally reviewing phones and other relevant user agents on a regular basis. Read the phone reviews, see customer ratings, share your experiences and more.