Figure 15 depicts
the PCMM architectural framework. The JPS communicates with application
managers, CMTS devices, and record-keeping servers.
Figure 15: PCMM Architectural Framework
The interactions between the various PCMM components are centered
on the policy server. In the PCMM architecture, these basic interactions
occur:
A client requests a multimedia service from an application
manager.
Depending on the client type and its QoS signaling capabilities,
the application manager relays the request to a policy server.
The policy server relays the request to the CMTS device
and is responsible for provisioning the policies on a CMTS device.
Depending on the request, the policy server records
an event for the policy request and provides that information to the
record-keeping server (RKS).
The CMTS device performs admission control and manages
network resources through Data over Cable Service Interface Specifications
(DOCSIS) service flows based on the provisioned policies.
The RKS receives event messages from other network elements,
such as the policy server or CMTS device, and acts as a short-term
repository for the messages.