In an ISS System, you work with many IP devices, and then a group of ISS services that provide many different features and functions. You will use ISS Client to use ISS System.
All of these services are configured using ISS Setup after logging into the ISS Admin service. Typically, you would want to limit which user groups can access these configurations using ISS Setup to change the recording schedule or event schedules.
IP cameras/video encoders using ISS protocol and ISS compatible DVRs are supported in ISS Systems. Also, ONVIF and 3rd party cameras are supported by ISS Admin service.
You can have only one ISS Admin service in one ISS System. No separate per channel License is required for ISS Admin service as long as you have an ISS Recording License.