Describes call admission control (CAC) for mesh, outlining how real-time session admission is controlled to prevent bandwidth oversubscription and includes configuration steps.
A mesh call admission control is a quality of service mechanism that
-
continuously monitors bandwidth available to mesh access points
-
regulates voice call admissions to maintain acceptable call quality, and
-
rejects calls when bandwidth or resource limits are reached.
Call Admission Control (CAC) enables a mesh AP to maintain controlled quality of service (QoS) on the controller. This management helps maintain voice quality on the mesh network. Bandwidth-based, or static, CAC enables the client to specify how much bandwidth or shared medium time is required to accept a new call. Each AP determines whether it can accommodate a call by checking the available bandwidth and comparing it to the bandwidth required for the call. If there is not enough bandwidth available to maintain the maximum allowed number of calls with acceptable quality, the mesh AP rejects the call.
Mesh CAC is not supported in these scenarios.
-
APs in a Mesh tree assigned with different site tags.
-
APs in a Mesh tree assigned with the default site tag.