Developer Documentation

Guides

Get a hang of WebRTC by building your own WebRTC button and webphone using our tutorials and SIP.js, an open source JavaScript library by OnSIP.

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OnSIP Apps

Like our pre-built apps InstaCall (WebRTC button) or InstaPhone (webphone), but wish you could make changes? See these guides and tweak away.

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Admin API

Get familiar with our Admin API to take control of your OnSIP account. Manage users, data reports, feature administration, and more.

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