SIP is an industry standard protocol for voice and video calling.
iViewer can act as a SIP Client endpoint in a larger SIP network, making and receiving voice and video calls with other endpoints such as phones, intercoms and door stations.

To add a SIP Client to your guiDesigner project, you need to add a new system in the System Manager, and choose the 'SIP Client' protocol.

The SIP Client system type can be controlled via two different protocols:

1. RAW = Plain text protocol.
2. JSON = JavaScript Object Notation strings.

Both protocol options expose the same functionality. If you are using our JavaScript API to send and parse feedback from the SIP Client system, then the simplest approach is to use the JSON protocol option. But if you are wanting to send simple commands directly, then the RAW protocol option might be a better choice for you.